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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 842001 (2013) https://doi.org/10.1117/12.2010318
This PDF file contains the front matter associated with SPIE Proceedings Volume 8420, including the Title Page, Copyright information, Table of Contents, and the Sponsors and Symposium Committee listings.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 842002 (2012) https://doi.org/10.1117/12.975962
It is necessarily to adapt development of advanced optical manufacturing technology with modern science technology
development. To solved these problems which low of ration, ratio of finished product, repetition, consistent in big size
and high precision in advanced optical component manufacturing. Applied business driven and method of Rational
Unified Process, this paper has researched advanced optical manufacturing process flow, requirement of Advanced
Optical Manufacturing integrated System, and put forward architecture and key technology of it. Designed Optical
component core and Manufacturing process driven of Advanced Optical Manufacturing Digital Integrated System. the
result displayed effective well, realized dynamic planning Manufacturing process, information integration improved ratio
of production manufactory.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 842003 (2012) https://doi.org/10.1117/12.975775
A fully automatic feedback control system of alignment for a pulsed infrared laser beam (10 ns pulses, 10 Hz repetition rate,
1064 nm wavelength) was developed and tested. The stability of laser beam is limited by several factors, such as the most
common being temperature changes and mechanical vibrations inside the laser and along the long distance optical route.
This new feedback control system could correct these drifts of the laser traverse route in time. The solution is based on
using CCD sensor as laser spot image acquiring device aimed to capture the information of laser pulses with a certain
frequency and serve motorized mirror mount controlled in according to the feedback information of the spot image by a
computer simultaneously. The paper solves the problem of synchronization between laser pulse and camera with
measurement method to capture whole images, restrains background noise and assures the image of best effect. As a result, the two axes motorized mirror mount could be corrected automatically based on the drift of laser beam spot centroid after every laser pulse.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 842004 (2012) https://doi.org/10.1117/12.975931
As the equivalent refractive index solution and the Fraunhofer approximation of scalar diffraction integral formula are
engaged, the far field diffraction characteristics of TE0 mode symmetrical multiple quantum well planar waveguide is discussed. Based on the Fourier transform relation between the near field distribution and far field diffraction distribution, the relation among the near field half width, far field divergence half angle and beam propagation factor for non-paraxial light beam are analysed and some approximate relationship with definite physical meaning are presented.
Then, the approximate characteristics of beam propagation factor, near field half width defined by equivalent matching
efficiency and tangent value of far field divergence half angle defined by equivalent matching efficiency versus the
number of potential well layers of TE0 mode symmetrical MQW planar waveguide are presented.
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Chengyu Liu, Chulung Chen, Weichih Liao, Sihliang Fu
Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 842005 (2012) https://doi.org/10.1117/12.2008752
We propose a construction of the optoelectronic pattern recognition system with binary power spectrum for target
recognition, and apply liquid crystal spatial light modulators to this system. In addition, we utilize the minimum average
correlation energy method and multi-level quantized reference function. The constructed reference function could be
implemented at the input plane of the liquid crystal spatial light modulator. Numerical result is presented.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 842006 (2012) https://doi.org/10.1117/12.974852
Large-scale measurement systems of range over 30m are main traceable devices of dimensional measurement for modern
large-scale advanced manufacture domain. High precision large-scale dimensional measurement devices with flexibility
and openness are made up of length measurement system, environmental measuring system, guiding rail system and
control system. In length measurement system using laser interferometers, zero error should be taken into account. This
paper proposed a novel method to eliminate zero error in large-scale laser interferometric measurement system. The
uncertainty of this system is improved experimentally.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 842007 (2012) https://doi.org/10.1117/12.975786
According to camera calibration requirements of close-range photogrammetry system, novel camera calibration method
based on dynamic three-dimensional (3-D) optical plate is proposed. The dynamic 3-D optical plate is realized by
translational moving a 2-D optical mask plate with elaborately designed targets alone a granite linear guiding rail. 2-D
direct linear transformation for camera external parameter decomposition is studied, and mathematical model for camera
internal parameter calibration is built based on bundle adjustment. The feasibility of dynamic 3-D optical plate and
camera calibration method are experimentally demonstrated.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 842008 (2012) https://doi.org/10.1117/12.977625
Grid algorithm is a classical star identification algorithm based on star pattern. A three-dimensional grid algorithm for
all-sky autonomous star identification is proposed, which is associated with the information of star view magnitude. In
contrast with traditional grid algorithm that constructs the grid cells on two-dimensional plane (e.g. x-y coordinate plane),
the proposed approach makes use of the star view magnitudes of the neighboring stars as the third dimension (e.g. z-axis).
A pattern is generated for each of its three-dimensional grid cells that contain neighboring star are 1, and those without
are 0. The progress of star identification is to determine which pattern in the database is associated with the particular
sensor pattern. Simulation shows that this method can achieve identification rate of 98.0% while the standard deviation
of star position error and star view magnitudes are 1 pixel and 0.3Mv respectively. Compared with the traditional grid
algorithm, the identification rate is higher, and the average runtime is 50 percent shorter.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 842009 (2012) https://doi.org/10.1117/12.977622
Wave-front sensor, as the main component of Adaptive optics system, detects light from the astronomic object or
reference sources. It aims to improve the utilization of light, especially for AO system work with the faint objects.
Compared with Shack-Hartmann sensor, pyramid wave-front sensor is a relatively new one with increased pupil
sampling and spatial resolution. Pyramid wave-front sensor uses a refractive element (the pyramid) to produce four
images of the entrance pupil. Usually, Single pyramid prototypes are made using the classical figuring and polishing
techniques. This approach, however, is not only very time consuming but also does not guarantee a uniform repeatability
of the optical characteristics of the pyramids. The loss of low frequency component increases due to the roofs existing on
its vertexes. Moreover, stray light is introduced in the four images. We therefore are investigating a modified pyramidal
optical components based on the binary optical concept. In this article we describe the diffractive pyramid prototypes
using the micro fabrication technique. The parameters of the pyramid are discussed.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 84200A (2012) https://doi.org/10.1117/12.977284
This paper studies the problem of keypoints recognition of extended target which lacks of texture information, and
introduces an approach of stable detection of these targets called boosting random ferns (BRF). As common descriptors
in this circumstance do not work as well as usual cases, matching of keypoints is hence turned into classification task so
as to make use of the trainable characteristic of classifier. The kernel of BRF is consisted of random ferns as the
classifier and AdaBoost (Adaptive Boosting) as the frame so that accuracy of random ferns classifier can be boosted to a
relatively high level. Experiments compare BRF with widely used SURF descriptor and single random ferns classifier.
The result shows that BRF obtains higher recognition rate of keypoints. Besides, for image sequence, BRF provides
stronger stability than SURF in target detection, which proves the efficiency of BRF aiming to extended target which
lacks of texture information.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 84200B (2012) https://doi.org/10.1117/12.979925
Compound eye, as a new imaging method with multi-lens for a large field of view, could complete target positioning and
detection fastly, especially at close range. Therefore it could be applicated in the fields of military and medical treatment
and aviation with vast market potential and development prospect. Yet the compound eye imaging method designed use
three layer construction of multiple lens array arranged in a curved surface and refractive lens and imaging sensor of
CMOS. In order to simplify process structure and increase the imaging area of every sub-eye, the imaging area of every
eye is coved with the whole CMOS. Therefore, for several imaging point of one target, the corresponding lens of every
imaging point is unkonown, and thus to identify. So an algorithm was put forward. Firstly, according to the Regular
Geometry relationship of several adjacent lenses, data organization of seven lenses with a main lens was built.
Subsequently, by the data organization, when one target was caught by several unknown lenses, we search every
combined type of the received lenses. And for every combined type, two lenses were selected to combine and were used
to calculate one three-dimensional (3D) coordinate of the target. If the 3D coordinates are same to the some combine
type of the lenses numbers, in theory, the lenses and the imaging points are matched. So according to error of the 3D
coordinates is calculated by the different seven lenses numbers combines, the unknown lenses could be distinguished.
The experimental results show that the presented algorithm is feasible and can complete matching task for imaging
points and corresponding lenses.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 84200C (2012) https://doi.org/10.1117/12.973751
Effects of light propagation in random atmospheric optical turbulence are critical problems for ground based high
resolution optical imaging. To get further knowledge of turbulence intensity or structure properties, the concept of fiber
optic sensing system is proposed and realized. Different to fine-wire platinum resistance thermometer or laser
scintillometer, the system has the ability to make non-contact measurement of optical turbulence up to the frequency of
500Hz during the air gap of 100mm, and has the dynamic range of 10−18 ~ 10−12 . The optic fiber’s merit of corrosion
resistance is sufficiently demonstrated by one month field test on the seacoast. Some properties of high frequency
turbulence power spectrum that have never been observed before in the range of 10cm are reported. In the end, prospects
of optical turbulence research by the usage of fiber optic turbulence sensing system are also discussed.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 84200D (2012) https://doi.org/10.1117/12.979201
In view of limitation for LED optical design method as ideal point source, a new uniform illumination optical design
method of freeform lens for a high-power LED is present in the paper.By establishing an energy corresponding
relationship between the extended LED source and the point illumination of the receiving surface, a freeform lens optical
model achieving uniform illumination in target plane is obtained.The optical simulation results of uniform light intensity
curve of the model are compared with the one designed by an approximate point source method. The results show that
the new method can effectively overcome the shortages from the point source design.It is more accurately to control the
correspondence relationship of light energy and the outgoing direction of light.The illumination uniformity of the
freeform lens is greater than 75% and also meets the design requirements.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 84200E (2012) https://doi.org/10.1117/12.977340
An image reconstruction model for the collinear holographic data storage (CHDS) system is proposed and analyzed. The analytical solution for the reconstructed image by the CHDS system is derived based on the first Born approximation and scalar diffraction theory. This expression shows the CHDS system is not a linear space-invariant system. A page-oriented simulation method is desired for a rigorous analysis. By applying the fast Fourier transform method, a page-oriented simulation method for the CHDS system is presented. The influence of the reference pattern and the media thickness on the quality of the image reconstructed from the holograph is investigated. The fill factor of the reference pattern is the key parameter for the quality of the reconstructed image.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 84200F (2012) https://doi.org/10.1117/12.975751
The liquid crystal spatial light modulator is becoming a more and more important device due to its wide applications.
During its characterization, the phase modulation is the most important one. In this paper, the modulation
characterization of a PLUTO phase-only spatial light modulator based on liquid crystal on silicon (LCOS) is studied by
applying the lensless Fourier transform digital holography. In the digital holography, the LCOS is used as a reflected
sample which modulates the phase of the incident wavefront with respect to the addressed gray level and gives the
information of entire active region. This result is then compared with the result obtained by using conventional
Michelson Interferometric method and both results are in good accordance with each other. At last the same holographic
set up is used for the imaging of phase grating as a reflected object which is addressed to the LCOS and the clear
profilometry of the grating is achieved.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 84200G (2012) https://doi.org/10.1117/12.975819
A volume holographic correlator (VHC) can function as an optical processing unit (OPU). With its multi-channel
processing ability, the VHC is capable to extract inner products between the target image and all the stored remote
sensing images with high speed and high parallelism. An opto-electronic hybrid system based on the VHC for scene
matching is proposed. The innovative hybrid processing mode of the system combines the advantages of the high
parallelism in VHC with the high flexibility and accuracy of digital processing, improving the overall system
performances. The influences of the VHC’s unique multi-channel parallel processing ability on the system speed and
accuracy are theoretically studied in the context of different VHC working modes. The improvements of the system
adaptability for different situations, such as illumination conditions and noise, are also analyzed by numerical simulation.
Finally, experimental results are discussed to evaluate the system feasibility.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 84200H (2012) https://doi.org/10.1117/12.976053
In this article, an interference digital testing method for measuring spatial density distribution of transmissive objects is
presented. This method applies a radial shearing interferometer to test the density field from 8 projections in the same
plane. By taking advantage of the regularized phase-tracking technique (RPT), the single interferogram will be
demodulated to two-dimensional phase distribution of the corresponding projection beam. Then the phase data on one
given cross-section of every projection is selected to form 8 curves, which describe one-dimensional phase variation on
the given cross-section from each projection. Regarding these curves as computer tomography projection data, the
refractive index distribution of the given cross-section can be reconstructed utilizing the algebraic reconstruction
technique (ART). Thus, a three-dimensional distribution of refractive index can be obtained by applying the method
above to different cross-sections in order. Finally, we are capable of calculating the spatial density distribution with the
relation between density and refractive index of the substance tested. In addition, the density field testing for hypersonic
flow field is investigated as an example in this article. Considering the fact that the target model in the optical window
center of a wind tunnel will inevitably block some testing beams, which will lead to the sharp decline in accuracy of the
testing results, a modified algebraic reconstruction technique which improves accuracy by introducing biharmonic
spline interpolation is presented. In simulation, an error less than 3% in non-block situation is reached while an error less
than 8% in small-area-block situation is also obtained.
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Xianghua Feng, Jiarong Ji, Wenhua Dou, Guomin Zhang
Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 84200I (2012) https://doi.org/10.1117/12.978253
The physical mechanisms for the polarization rotation of the light in a bulk semiconductor optical amplifier (SOA) originate from the significant nonuniform distributions of carrier density across the active region. Due to this carrier density’s nonuniformity, the effective refractive indexes experienced by transverse-electric (TE) and transverse-magnetic (TM) modes of the probe are different. This results in a phase shift between TE and TM modes of the light upon leaving the SOA. The bulk SOA polarization rotation’s law can be analyzed theoretically and experimentally based on the method of measuring output power in a pump-probe scheme. The experiment employs polarizer driving by walking electromotor and power meter, the light power of every orientation is measured. The transformation law of output polarization is find for obvious polarization rotation in other perpendicular axes based on connection of ellipse in difference axes.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 84200J (2012) https://doi.org/10.1117/12.2008754
The encoder is an important component of the ternary optical computer which utilizes three steady states of
light—horizontally polarized light, vertically polarized light (abbreviated V), and no-intensity state—to represent ternary
information -1, 1, and 0 respectively. The encoder consists of light source, two electronically controlled liquid crystal
units, and two vertical polarizers. The encoder can modulate corresponding three-state light signals according to the
input binary electronic signals. This paper is about the thousand-trit (trit denotes one ternary data) ternary optical encoder
which can parallelly modulate thousands three-state light signals. In order to realize the parallelism of the thousand-trit
ternary optical encoder, a special kind of liquid crystal array whose pixels can be controlled synchronously was
designed. By utilizing the parallel liquid crystal array, the thousands-trit ternary optical encoder was designed and
implemented. Its principle, parallel liquid crystal array, and implementation were introduced in details.
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Yuehong Hu, Ke Wang, Zhi-gang Zhang, Shuang-lian Feng, Ming Wu
Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 84200K (2012) https://doi.org/10.1117/12.970556
The atmospheric refractive index structure constant is an important parameter of atmospheric turbulence intensity. It was
measured using AZZ10 micro-thermalmeter over desert where is a little or no vegetation cover. The vertical profile were
investigated by analysis of experimental data over desert with 0~30km height range. And structure characteristics of
atmospheric turbulence were given. Results can supply technological support for laser engineering applications to select
suitable testing time and time-interval.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 84200L (2012) https://doi.org/10.1117/12.974265
In combination of the advantages of the optical encryption technology and optical hiding technology, this paper is going
to reveal the way of hiding the encrypted result obtained from scrambling technology in the low-frequency coefficients
of secondary discrete wavelet transform domain of another public image. Meanwhile, the information in different pixels
is hidden by different coefficient matrixes generated by chaos technology in the hiding process. It makes the encrypted
result more difficult to decipher. The proposed method is proved to be a valid approach for hiding the confidential
information as secret image in another non-confidential image via computer simulation and validation. The quality
decline of the carrier image is unapparent, which is unlikely to cause the attackers' attention. This method can effectively
resist the influence of noise, cutting, compression and other attacks. What’s more, the broad key space and good
robustness are of high practical value.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 84200M (2012) https://doi.org/10.1117/12.974362
The extreme environment of Antarctic is valuable for astronomical observations. Dome C is proved has excellent seeing
and transmission by site testing works. While the higher, colder inland plateau Dome A is widely predicted as even better
astronomical site than Dome C. Preliminary site testing developed since the beginning of 2008 shows that Dome A has
lower boundary layer and lower precipitable water vapour. Now the automated seeing monitor is urgently needed to
quantify the site's optical character which is necessary for the telescope design and deployment. In addition, it has the
requirement that DIMM must realize automatic measurement for nearly one year under the case of unmanned
intervention during which a great quantity of data will be generated because of the limitation of Dome A. This paper
aims at researching how to use the method of mining association rules to automatically analyze observation data, what
the relationship between various parameters effecting on optical quality is, and improving the efficiency of telescope
observation by parameter optimization. We have modified a commercial telescope with diameter of 35cm to function as
site testing DIMM which has been installed at XingLong observation station of National Astronomical Observatories,
Chinese Academy of Sciences, acquired long term observation data, and identified that this method is suitable for
optimizing the parameters of DIMM system.
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Xiaojian Kong, Hualiang Cao, Qingping Hu, Xuanhua Lei
Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 84200N (2012) https://doi.org/10.1117/12.975635
This paper presented a gradient-index planar waveguide (GIPW) coupler for laser diode and single mode fiber (SMF),
and numerically analyzed the coupling efficiency and alignment tolerance of the couplers based on ABCD matrix. First,
the components of the coupler were introduced. The coupler comprises of a gradient-index planar waveguide and a
self-focusing lens. An elliptical Gauss beam emitted from an LD have different spot sizes in different direction and has
mass losses when coupling with SMF directly. A method was presented by this paper to convert the elliptical beam into a
circular one by a kind of gradient-index planar waveguide, and then the circular Gauss beam could be couple in SMF
with a high efficiency by using a 1/4 pitch self-focusing lens. Second, we formulated the ABCD matrix of the beam
propagation between LD and SMF by tracing complex rays, and obtained the expressions for spot sizes and wave-front
radii of Gauss beam. Then the model for calculating coupling efficiency of the coupler was set up by overlap integral.
Finally, the coupling efficiency of that coupler was investigated numerically. The coupling loss characteristic and
tolerance characteristics were analyzed, and the optimized parameters of the components were given. This technique
should be useful for design and manufacture of the coupler.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 84200O (2012) https://doi.org/10.1117/12.975940
In order to find man-made spacecraft, this paper proposes a method of visual target detection and identification. In this
method, because of the same relative position of the stars, by using image registration and intelligent frame difference
method, the non-moving stars are removed. By distinguishing of the different profiles of the natural and man-made star,
the man-made stars are separated from nature stars. Therefore, the goal of man-made satellites dynamic recognition is
achieved. Experimental results show that the proposed method compared with traditional methods, operations reduced by
about 30%, reliability has been improved. And it has practical significance in engineering practice.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 84200P (2012) https://doi.org/10.1117/12.971510
A space telescope containing two CCD cameras is being built for scientific observation. The CCD detectors need to
operate at a temperature below -65°C in order to avoid unacceptable dark current. This cooling is achieved through
detailed thermal design which minimizes the parasitic load to 2K×4K array with 13.5 micron pixels and cools this
detector with a combination of thermo electric cooler(TEC).
This paper will describe detailed thermal design necessary to maintain the CCD at its cold operating temperature while
providing the means to reject the heat generated by the TECs. It will focus on optimized techniques developed to manage
parasitic loads including material selection, surface finishes and thermal insulation. The paper will also address analytical
techniques developed to characterize TEC performance. Finally, analysis results have been shown the temperature of key
parts.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 84200Q (2012) https://doi.org/10.1117/12.977934
In the researching field of optical superresolution, a phase or amplitude filter is often utilized. They are easy to build, and
simple to insert to a system. A new idea on design a continuous phase filer is proposed. This type of filter is based on the
law that the focal size is mainly decided by the marginal rays in the aperture. A quadric function consisted of tangent
value is built. Assuming that the radially polarized light incident, passing through a phase filer and being focused by a
lens, the intensity distribution on the focal plane is simulated. The vector diffraction theory is used here. To get a smaller
focus, the parameters in the phase function are optimized in Matlab. The results show the superresolution effects.
Compared with others, the filters maintain higher energy utilization rate. A good prospects for application can be
expected.
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Jinlong Li, Li Wang, Xiaorong Gao, Zeyong Wang, Quanke Zhao
Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 84200R (2012) https://doi.org/10.1117/12.970615
In this paper, a mathematic model of rear-end accident based on system dynamics theory is proposed, and a beforehand
alarm system against vehicle rear-end accident is designed. Driver’s physical reaction time and perception process are
involved in this model, and after calculating the system installed in the following vehicle can predict whether the rear-end
accident will occur. In the paper, the model’s establishment, the alarm system’s structure and working principle are described
in detail and the design of relevant hardware and software is given. The system ran well in the test, and it has high liability,
low cost, and easy node- expanding, which has a bright prospect of application and popularization.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 84200S (2012) https://doi.org/10.1117/12.970608
To stitch remote sensing images seamlessly without producing visual artifact which is caused by severe intensity
discrepancy and structure misalignment, we modify the original structure deformation based stitching algorithm which
have two main problems: Firstly, using Poisson equation to propagate deformation vectors leads to the change of the
topological relationship between the key points and their surrounding pixels, which may bring in wrong image
characteristics. Secondly, the diffusion area of the sparse matrix is too limited to rectify the global intensity discrepancy.
To solve the first problem, we adopt Spring-Mass model and bring in external force to keep the topological relationship
between key points and their surrounding pixels. We also apply tensor voting algorithm to achieve the global intensity
corresponding curve of the two images to solve the second problem. Both simulated and experimental results show that
our algorithm is faster and can reach better result than the original algorithm.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 84200T (2012) https://doi.org/10.1117/12.973665
This paper presents a segment and spline synthesis optimization method (SSS method) for the freeform total-internal-reflection
(TIR) lens design. Before the optimization starts, a series of discrete control points are used to describe the TIR
lens profile. In order to realize initial optimization, the segment method is applied to optimize a linear-segmented TIR
lens. The final optimization is further achieved by the spline optimization method, after which the cubic-spline-modeling
TIR lens with the characteristic of low cost and easy fabrication could satisfy the target illumination requirements. The
detailed design principle and optimization process of the SSS method are both analyzed and compared in the paper.
Complementing each other, the synthesis of the segment and spline optimization method could realize the prescribed
design and greatly improve the design efficiency for designers. As an example, the specially designed polymethyl
methacrylate (PMMA) freeform TIR lens used for LED general lighting could demonstrate the effectiveness of this
method. The uniformity of the lens significantly increases from 67% to 88% after the segment and spline method,
respectively. High light output efficiency (LOE) of 99.3% is available within the target illumination area for the final
lens system. It is believed that the SSS method could be applied to design other freeform illumination optics.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 84200U (2012) https://doi.org/10.1117/12.970642
Speaker recognition is to recognize speaker’s identity from its voice which contains physiological and behavioral
characteristics unique to each individual. In this paper, the artificial neural network model, which has very good capacity
of non-linear division in characteristic space, is used for pattern matching. The speaker's sample characteristic domain is
built for his mixed voice characteristic signals based on Kmeanlbg algorithm. Then the dimension of the inputting
eigenvector is reduced, and the redundant information is got rid of. On this basis, BP neural network is used to divide
capacity area for characteristic space nonlinearly, and the BP neural network acts as a classifier for the speaker. Finally, a
speaker recognition system based on the neural network is realized and the experiment results validate the recognition
performance and robustness of the system.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 84200V (2012) https://doi.org/10.1117/12.973647
Micro-projector has found wide application in the field of mobile phone, pico-projector et al. However, because of the
depth of the field of the projection lens, precise focus mechanical design is needed for the optical engineer to get fine and
clear image.
Wavefront coding technique is a novel technique which is introduced by Dowski and Cathey in 1995. By adding an
aspheric phase mask at the pupil of the optical system, wavefront coding technique can make the imaging performance of
the optical system insensitive to the defocus, and can also make the system insensitive to the defocus related aberrations,
such as spherical aberration, chromatic aberration, field curvature, astigmatism and so on.
In this paper, a projection lens with long depth of field for the CF-LCOS projector is developed to satisfy the new
requirement. We first design the projection lens with the traditional optical design software to let it project the image to
the average projection distance. For example, if the lens is designed with in the range of 0.65-2.0m, then about 1.0m is
selected as the preliminary projection distance. After the lens (with a 3mm plane plate at the stop surface) is optimized
with the CODE V in this distance, the plane plate is replaced with cubic phase plate. Then the lens is optimized again
(the phase plate parameter varied for optimization) to get the final lens. In the new optimization, the resolution should be
3 times of the real resolution according to the LCOS resolution. This new optimized lens has the same MTF or PSF for
different fields between 0.65 and 2m projection distances, this ensures the high resolution with no focus operation.
Because of the MTF satisfies the LCOS requirement between the distance of 0.65 to 2m, no resolution is damaged and
also no focus operation is need in this effective projection distance , thus no mechanical focus system is needed.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 84200W (2012) https://doi.org/10.1117/12.966412
Due to the vibration of satellite platform, the image degradation has greatly hindered the development of High
Resolution Earth Observation (HREO) system. Modulation Transfer Function (MTF) is an effective means to measure
the image quality, which can well quantitatively analyze the degradation of image quality as a result of satellite platform
vibration. This paper is divided into 3 parts to systematically analyze how the vibration of satellite platform affects the
image quality. Firstly, the basic law of satellite vibration is clarified, and the relationships between image displacements
and the vibration of the space-borne camera in all six degrees of freedom (DOF) are detailed demonstrated. Secondly, the
mechanism of optical degradation for remote starring imaging under vibration is analyzed, and then deriving from
Optical Transform Function (OTF), a formula for calculating the MTF is identified for arbitrary known vibration. Finally,
a properly designed semi-physical simulation system is built. Loading a certain vibration parameter as the vibration
source, the system can get a simulated degraded image. The slanted-edge method for calculating MTF of image is
introduced for comparison. Experiments show that the MTFs calculated from the derived MTF formula and obtained by
slanted-edge method from the simulated degraded image present a good agreement, which verifies the reliability of the
proposed theoretical analysis.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 84200X (2012) https://doi.org/10.1117/12.964396
Nowadays, spectrometers are being increasingly used in the remote sensing of the earth system processes and they can be
well conducted field spectral calibrated by using absorption features of atmospheric profile. The spectral calibration
accuracy of an ASD spectrometer in different atmospheric conditions is analyzed in this paper. First of all, set the atsensor
spectral radiance spectrum as the reference spectral curve, which is generated by the MODTRAN5 radiative
transfer model outputs convolved with the spectral response function of each channel. The results can be totally different
when input different water vapor contents. Meanwhile, under the same atmospheric conditions (the same observation
target, the sun elevation angle, azimuth, aerosol distribution, composition and concentration distribution of
atmosphere..etc. ), the diffuser whiteboard is measured by the ASD spectrometer to acquire observed spectral curve. The
best spectral matching algorithm is used to compare the observed spectrum with the reference one. Central wavelength of
the ASD is obtained by calculating the results of matching spectrum shifts within feature spectrum range. Finally,
quantitative analysis and calculation about the effect on the accuracy of instrument spectral calibration with different
water vapor contents is presented.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 84200Y (2012) https://doi.org/10.1117/12.974986
Wavefront coherent synthesis is widely desired in several important laser systems. Meanwhile, with the help of laser, the
following engineering problems can be converted into phase measurement in wavefront coherent synthesis: mirror tiling
in large scale astronomical telescopes, and planar diffraction grating tiling in laser pulse compression. The main task for
phase measurement in wavefront coherent synthesis is to measure the phase difference between synthesized wavefronts
in the form of transmission direction error and piston phase error. In this paper, phase measurement for wavefront
coherent synthesis based on lateral shearing interferometer is proposed. No reference beam is necessary so the system is
simply structured. Simulations were performed to deduce the quantitative relationship between interferograms and phase
errors. A demonstration experiment system of planar mirror tiling was set up. Coherent synthesis of monochromatic
wavefront was achieved with transmission direction error of 2″ and piston phase error of 1/20 of the wavelength, with the
encircled energy of the far-field diffraction pattern higher than 92.9% of the ideal case.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 84200Z (2012) https://doi.org/10.1117/12.974306
Image sensors are important components of lunar exploration device.
Considering volume and cost, image sensors generally adopt a single CCD or CMOS at
the present time, and the surface of the sensor is covered with a layer of color filter
array(CFA), which is usually Bayer CFA. In the Bayer CFA, each pixel can only get one
of tricolor, so it is necessary to carry out color interpolation in order to get the full
color image. An improved Bayer image interpolation method is presented, which is
novel, practical, and also easy to be realized. The results of experiments to prove the
effect of the interpolation are shown. Comparing with classic methods, this method
can find edge of image more accurately, reduce the saw tooth phenomenon in the
edge area, and keep the image smooth in other area. This method is applied
successfully in a certain exploration imaging system.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 842010 (2012) https://doi.org/10.1117/12.974309
The wide-field optical system is an important part of lunar exploration image device, and it is applied and
researched widely in lunar exploration project. However, with the increase of the field of view, image distortion becomes
more serious. In this paper, based on analyzing the basic principles of distortion, a particular geometric distortion
correction model is put forward, and a digital correction method is presented, which is novel, practical and also easy to
be realized. The experiment proves the validity of the method, and the result show that the distortion rate decreases into
1% from 27% before image correction. This correction method has been applied successfully in a certain exploration
imaging system.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 842011 (2012) https://doi.org/10.1117/12.971449
Photo counting imaging is a promising imaging method for very low-level-light condition and super high-speed imaging.
An experimental setup with Geiger mode silicon avalanche photodiode single-photon counter was established in this
study. This experimental setup achieved photon counting imaging through serial two-dimensional scanning mode of
single APD. It extracts the extremely weak signal from the noise by scanning image, and then reconstructs the photon
distribution image. The feasibility of the experiment platform was verified with many experiments. The resolution bar
was scanned and imaged in different lighting condition. A Lena image was also scanned and imaged among several
illumination conditions. The resolution ability and imaging quality are evaluated in different illumination surroundings.
The imaging limited condition was concluded based on existing APD sensor. The experimental result indicates that the
imaging based Geiger mode APD is an excellent candidate for very low level light imaging.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 842012 (2012) https://doi.org/10.1117/12.970405
The one key problem of passive auto-focus technique based on image is image definition criterion which is
estimated by auto-focus function.This paper analyzes the limitation of traditional spatial domain auto-focus
functions which are not sensitive to small changes of images,and presents a new auto-focus evaluation function
which uses the combination filters to strengthen the image medium-frequency information.In order to evaluate the
new function performance,the parameters of unimodality,accuracy,sensitivity,calculating cost are compared and
analyzed.Compared with the traditional spatial domain evaluation functions,such as Brenner function,Laplacian
function and Tenengrad function,the experimental results show that the new function has a fast calculation
speed,and has a high sensitivity.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 842013 (2012) https://doi.org/10.1117/12.978854
For the limitation of the application of classical scene correction algorithm in infrared Focal Plane
Array (FPA) at present, decomposition of non-uniformity characters correction algorithm was studied.
We analyze the factors that construct the non-uniformity of the FPA and decompose the non-uniformity
of FPA into blind point, row/column non-uniformity, gradients non-uniformity .etc by character, apply
different processing algorithms to different kinds of non-uniformity. We experiment this algorithm on
self-developed infrared equipment. The result indicates that this algorithm is of high accuracy as well
as good application, and can solve the degeneration phenomenon such as ‘ghosting’ in classical scene
correction.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 842014 (2012) https://doi.org/10.1117/12.971586
Boresight and jitter that cause energy loss and decline of the system performance are two fundamental pointing errors for
a laser pointing system. Based on the statistics of the return photons reflected from target and estimation of the pointing
errors, a second-order moment estimation algorithm is proposed. This algorithm that is the expansion of the Key-rate
method can estimate boresight and jitter simultaneously. In this paper, a laser pointing system model based on a Gaussian
far-field irradiance profile and a Gaussian beam jitter is setup, a laboratory experiment is performed, and the simulation
and experimental data is processed by this estimator. The results demonstrate that the performance of the second-order
moment estimation is excellent and the performance improves with the increasing number of shots. What’s more, the
further study finds that the experimental results agree well with the simulation results.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 842015 (2012) https://doi.org/10.1117/12.975181
Dynamic alignment system (DAS) is used to correct the misalignment of moving mirror in Fourier Transform Infrared
Spectrometer (FTIRS) of which both fixed mirror and moving mirror are plane reflectors. The detecting precision of
dynamic tilting angle of moving mirror offers guarantees to the adjustment performances of DAS. In this paper, the noise
tolerance of measuring precision of tilting caused by moving mirror are theoretically analyzed and tested. Experimental
results show that tilting measuring accuracy is improved with adjusting methods according to the noise tolerance
analysis.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 842016 (2012) https://doi.org/10.1117/12.970389
The Matlab/Simulink simulation model of APT (acquisition, pointing and tracking) system is analyzed and established.
Then the model’s C code which can be used for real-time simulation is generated by RTW (Real-Time Workshop).
Practical experiments show, the simulation result of running the C code is the same as running the Simulink model
directly in the Matlab environment. MultiGen-Vega is a real-time 3D scene simulation software system. With it and
OpenGL, the APT scene simulation platform is developed and used to render and display the virtual scenes of the APT
system. To add some necessary graphics effects to the virtual scenes real-time, GLSL (OpenGL Shading Language)
shaders are used based on programmable GPU. By calling the C code, the scene simulation platform can adjust the
system parameters on-line and get APT system’s real-time simulation data to drive the scenes. Practical application
shows that this visual simulation platform has high efficiency, low charge and good simulation effect.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 842017 (2012) https://doi.org/10.1117/12.971425
According to computer-generate holographic theory, a diffraction optics element used for holographic sight is designed
by modified off-axis reference beam coding method. This diffraction optical element is composed by an off-axis Fresnel
holographic lens. The spherical wave light from LD is parallel by this element. The light filter and compensation
function of diffraction grating can also be replaced by this element. The fabrication of this diffraction optics element is
not limited by the recording optic system. Mirrors and lenses are replaced by this element so that the reproducing optical
path is simplified and the stability of the device is improved. A matlab program is used to simulate the hologram.
Theoretical simulation results show that the precision of sight can be improved with the virtue of low aberration and high
matching to holographic sighting window.
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Yuhua Yu, Wende Dong, Huajun Feng, Zhihai Xu, Qi Li
Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 842018 (2012) https://doi.org/10.1117/12.965307
When relative motion between the target and the camera occurs, the captured images would be blurred. Due to the
arbitrariness of the motion, it is of great difficulty to restore the degraded images. In this paper, a new method based on
Hartmann-Shack Wavefront Sensor is proposed to deblur the degraded image of the extended target caused by arbitrary
motion. Relevant theoretical analysis is given and a corresponding experimental system is built. During the exposure
time, image sequences are obtained by the Hartmann-Shack Wavefront Sensor to calculate the displacement vectors,
from which the Point Spread Function (PSF) is estimated to restore the blurred image. Experimental results show that the
proposed method can efficiently restore the degraded image of the target. So the application of Hartmann-Shack
Wavefront Sensor can be extended to detect the motion of target, which means we can deal with wavefront distortion and
motion blur using Hartmann-Shack Wavefront Sensor simultaneously.
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Yu Liu, Xin-sai Wang, Hualiang Xu, Ming He, Mingming Li
Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 842019 (2012) https://doi.org/10.1117/12.978857
A Bilateral Filter (BF) and Multi-scale Retinex (MSR) based infrared image enhancement algorithm is proposed in this
paper. It’s known that the MSR algorithm derived from vision theory can achieve dynamic range compression and tonal
rendition effectively but suffers from ‘halo’ phenomena caused by the existence of “sharp” edges in infrared images.
Research shows that bilateral filter has the property of separating image details from strong edges. Therefore, we process
detail components containing strong edges in MSR algorithm with bilateral filter to achieve dynamic range compression,
detail enhancement and avoid ‘halo’ artifacts at the same time. The performance of proposed algorithm is then validated
by experiments with three real infrared images and compared with other two infrared images enhancement algorithms.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 84201A (2012) https://doi.org/10.1117/12.975814
We propose a simulation and test platform for free-space quantum communication. The platform is used to simulate the
working condition of the satellite-to-ground quantum communication, test the technical parameters and performance of
the quantum communication terminal. A collimator is used to simulate the far-field optical transmission between the
satellite and the ground; A turntable is used to simulate the motion between the satellite and the ground; A voice coil
motor fast steering mirror is used to simulate the vibration of the satellite. With this platform, we design experiments to
test the quantum communication terminal we developed. Its acquisition, tracking and pointing (ATP) performance and
the far-field distribution of the communication photons are tested, the test results are provided and analyzed.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 84201B (2012) https://doi.org/10.1117/12.978839
Imaging fiber bundle is a necessary element in a conventional endomicroscopy imaging system. The combination of a
proximal spatial light modulator as a means of achieving beam scanning and an imaging fiber bundle for light delivery
and collection enables the wavefront at the distal end of the fiber bundle to be synthesized, controlled and scanned. In
this way the endomicroscope is very different from conventional systems which use proximal scanning mirrors or distal
scanning heads. Thus, it is necessary to investigate the effect of primary parameters, such as diameter of each core, core-core
separation and phase mask applied to the face of the imaging fiber bundle on the characteristics of focusing spot.
These effects were simulated by numerically generating distal wavefronts and propagating them using the method of
angular spectrum of plane-wave. The axial and lateral resolution and SNR were introduced to evaluate the characteristics
of the focus. The imaging system could be optimized and reduced constraints on the imaging fiber bundle used based on
these results.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 84201C (2012) https://doi.org/10.1117/12.956499
As resolution of lithography becomes narrower, the illumination mode affects imaging more significantly. Correct
illumination mode can improve resolution. Element theorems of lithographic imaging have been presented. Polarized
imaging and partially coherent imaging have been derived and simulated. The reason why illumination mode affects
imaging is analyzed. The image contrast and depth of focus (DOF) under different polarizations and coherent factors are
compared. The result shows that imaging performance can be improved by selecting correct mode of illumination.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 84201D (2012) https://doi.org/10.1117/12.975789
High-speed multi-frame camera by which a lot of time series images with adequate spatial information can be obtained is
widely used for recording in the process of wasting test. The non-kinematics supporting structure of the cemented cubic
prism for three-frame in High-speed multi-frame camera is designed. The deformation of cubic prism with edge-length
up to 112mm induced by gravity is calculated and the effect of the deformation on three-frame camera system is
discussed. The deformation of the supporting structure of the cubic prism for three-frame under the gravity of cubic
prisms and the lower-order modes are also calculated. The first natural frequency of the supporting structure of the cubic
prism is better than 1000Hz, which indicates that the supporting structure of the cubic prism is with good stiffness and
reliable. The research in this paper is favorable for the application of cubic beam splitter prism in high-speed multi-frame
camera.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 84201E (2012) https://doi.org/10.1117/12.977930
Infrared polarization imaging technology is a new detection technique, and it can distinguish busy background and target
through the infrared polarization characteristics of target. Compared with the traditional infrared imaging technology,
infrared polarization imaging technology has obvious preponderance at the aspect of target identify. Based on the
characteristics that the infrared polarization image can highlight the target contour and enhance the detail of the scene, an
infrared polarization fusion method based on wavelet packet transform is proposed. And a new color reconstruction
method based on wavelet packet is presented through analyzed corresponding relation between HSV color space and
radiation and polarization images. The innovative point is that use the fusion image instead of radiation image be
transmitted channels V of HSV space, and the fusion images are gain by wavelet packet transform. Meanwhile, it is
objective evaluated that the color reconstruction image by objective evaluation function based on details. The evaluation
function is contrast index of frequency band. The result show that the new method that is presented can enhance detail
information, and it is helpful to study color fusion.
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Lei Yang, Jianzhong Cao, Hao Wang, Yao Tang, Hua Wang
Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 84201F (2012) https://doi.org/10.1117/12.968604
Adopting the advantages of contourlet such as multiscale, localization, directionality and anisotropy, a multifocus image
fusion algorithm based on contourlet transform is developed [1]. Source images are firstly decomposed to domain of the
contourlet transform. The image fusion is then implemented in subbands with different scale and direction combining.
The fusion rule with maximum absolute value coefficient is used to fuse the high frequency subbands, while the rule
dependent on the image’s spatial frequencies and contrast are applied to the low frequency subbands. Finally the fused
image is obtained through inverse transform. Experimental results show that the fused image using this algorithm has
better subjective visual effect, and is better than the one using traditional Laplacian pyramid algorithm and wavelet based
algorithm.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 84201G (2012) https://doi.org/10.1117/12.974297
Progressive addition lenses are a kind of ophthalmic lenses with freeform surface. The surface curvature of the
progressive addition lenses varies gradually from a minimum value in the upper, far-view zone, to a maximum value in
the lower, near-view zone. The increasing mean power from far-view zone to near-view zone is called addition mean
power. The far-view zone, near-view zone and the intermediate zone are called effective usable area of the lens. In this
paper, the design principles of progressive addition lenses are discussed. Several kinds of design methods are illustrated,
and their advantages and disadvantages are also represented. A global optimizing method using curvature compensation
is proposed which can reduce the undesirable astigmatism in some regions of the progressive addition lens surface while
retaining desirable optical features of the progressive lenses. The total optimizing design thought is to reduce
astigmatism of each point by reducing the curvature difference using curvature compensation. The value of the surface
vector height of the optimized PAL is calculated by adding the value of the surface vector height of the initially designed
PAL and the value of the surface vector height of a new freeform. The contours of the power and astigmatism of the
initially designed PAL and optimized PAL from the example are given. It is shown that the largest astigmatism is reduced
after optimization and the effective usable area in the far-view zone is expanded obviously.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 84201H (2012) https://doi.org/10.1117/12.975136
The advantages and disadvantages of the traditional PID control and the fuzzy control principle are analyzed. A
fuzzy-PID controller is designed for the airborne stabilized platform, to meet the requirements for tracking precision and
response speed. The simulation result from MATLAB verified the validity of the method. The dynamic performance of
the system has been improved, and the overshoot decreased. At the same time, the stable precision and the response
speed are improved obviously.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 84201I (2012) https://doi.org/10.1117/12.974347
In this paper, we present a novel automatic image segmentation method, which combines the active contour method and
the saliency map method. The saliency map which is obtained by inversing the spectral residual of the image brings a
priori knowledge to bear on the image segmentation. The initial level set function is constructed from saliency map. In
this way, an automatic initialization of the level set evolution can be obtained. This method can minimize the iterations
of the level set evolution. The efficiency and accuracy of the method are demonstrated by the experiments on the
synthetic and real images.
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Chunlin Yang, Yuanhang Zhang, Jian Wan, Liming Yang
Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 84201J (2012) https://doi.org/10.1117/12.970526
To realize the smoothing character of continuous phase plate the tolerance capability of this kind element is analyzed in
this paper. A series of wavefront with different aberrant parameters are simulated and the far-field distributions of these
wavefront are calculated. The results show that with the varying of the distortion depth of the aberrant wavefront, the
distribution of the far-field faculas are calculated. To analyze the tolerance of continuous phase plate, the rms values of
the far-field faculas about the aberrant wavefront are calculated.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 84201K (2012) https://doi.org/10.1117/12.956498
Designed and implemented a new type of hybrid super-doped fiber fluorescent sources,Experiments using laser-diode-pumped erbium-doped fiber and Tm-doped fiber,Two 3dB couplers with broadband fiber reflector as,While taking advantage of the power control circuit for light stable light output, Get S + C + L-band ultra-bandwidth optical fiber light source. Received light power of 28 mW total, Bandwidth from 1460 nm to 1610 nm. The use of optical fiber loop mirror, Not only improved the flatness of the light source, And greatly improve the conversion efficiency of bare.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 84201L (2012) https://doi.org/10.1117/12.978283
Surface cleanness and roughness to BK-7 substrates are important factors affecting the performance of laser optics. The
conventional RCA cleaning method is widely used in removing particles from substrate surface, with high removal
efficiency but rough surface. Therefore, more precise control of the chemical cleaning performance of BK-7 substrate is
required than what is available today. In this study, four groups of BK-7 samples were dealt with different cleaning
treatments to explore the effects of chemical solutions. The influences of chemical solutions on removal efficiency,
etching depth and surface roughness were studied. An optimal cleaning method of BK-7 substrates was proposed, which
could remove contaminations completely and gets smoother surface.
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Proceedings Volume 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 84201M (2012) https://doi.org/10.1117/12.2008756
Integral imaging (II) is a technique that is capable of displaying 3D images with continuous parallax in full natural color.
At present Integral Imaging is a popular three-dimensional imaging technology. It is becoming the most perspective
technique in developing next generation three-dimensional TV (3DTV) and visualization field due to its outstanding
advantages. The micro-lens array is used in recording and replaying 3D scene information in this technique with true
color, simply reconstruction and non-relevant light source. In order to research really many precision instrument are
required. But the price is too high to set up a complicated authentic imaging system. In the same time the imaging
condition is very difficult to satisfy. ASAP (Advanced System Analysis Program) is an advanced imitates optical
software to solve reality optical questions. It is used in many research territories. In this paper the ASAP software is
proposed to simulate and model the micro-lens array sheet. The ray tracing and energy distribution is completed.
According to the study results we can optimum lens designing through modifying the focal length, aperture size and
imaging position. We hope the study cost can be reduced and the efficiency can be improved through the use of
simulation method to optical design software ASAP.
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