Mr. Sam Y. Bae Profile

Sam Y. Bae

SPIE Involvement:

Author

Publications (7)

SPIE Journal Paper | 7 October 2016 Open Access

4-mm-diameter three-dimensional imaging endoscope with steerable camera for minimally invasive surgery (3-D-MARVEL)

Sam Bae, Ronald Korniski, Michael Shearn, Harish Manohara, Hrayr Shahinian

NPh, Vol. 4, Issue 01, 011008, (October 2016) https://doi.org/10.1117/12.10.1117/1.NPh.4.1.011008

KEYWORDS: Endoscopes, 3D image processing, Cameras, Imaging systems, Optical filters, Surgery, Image resolution, Staring arrays, Stereoscopy, Image filtering

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SPIE Journal Paper | 4 October 2012

Development of a miniature single lens dual-aperture stereo imaging system towards stereo endoscopic imaging application

Sam Bae, Ronald Korniski, John Choi, Michael Shearn, Poyan Bahrami, Harish Manohara, Hrayr Shahinian

OE, Vol. 51, Issue 10, 103202, (October 2012) https://doi.org/10.1117/12.10.1117/1.OE.51.10.103202

KEYWORDS: Prototyping, Imaging systems, Surgery, Detector arrays, Endoscopy, Channel projecting optics, Optical engineering, Human vision and color perception, Metals, Endoscopes

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SPIE Journal Paper | 7 March 2012

New technique of three-dimensional imaging through a 3-mm single lens camera

Sam Bae, Ronald Korniski, Harish Manohara, Allen Ream, Hrayr Shahinian

OE, Vol. 51, Issue 02, 021106, (March 2012) https://doi.org/10.1117/12.10.1117/1.OE.51.2.021106

KEYWORDS: Cameras, 3D image processing, Optical filters, Stereoscopic cameras, Imaging systems, Endoscopes, 3D displays, Image filtering, Lens design, Commercial off the shelf technology

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Proceedings Article | 24 February 2012 Paper

Single lens dual-aperture 3D imaging system: color modeling

Sam Y. Bae, Ronald Korniski, Allen Ream, Eric Fritz, Michael Shearn

Proceedings Volume 8288, 828807 (2012) https://doi.org/10.1117/12.912001

KEYWORDS: Imaging systems, Computed tomography, Bandpass filters, Objectives, Tunable filters, Cameras, RGB color model, Optical filters, Stereoscopy, Patents

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Proceedings Article | 10 September 2011 Paper

3D imaging with a single-aperture 3-mm objective lens: concept, fabrication, and test

Ronald Korniski, Sam Bae, Michael Shearn, Harish Manohara, Hrayr Shahinian

Proceedings Volume 8129, 812904 (2011) https://doi.org/10.1117/12.894110

KEYWORDS: Commercial off the shelf technology, Objectives, Cameras, Endoscopes, Surgery, Optical filters, Imaging systems, Endoscopy, 3D image processing, Image filtering

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Proceedings Article | 19 April 2002 Paper

High-performance MEMS microgyroscope

Sam Bae, Ken Hayworth, Karl Yee, Kirill Shcheglov, Dean Wiberg

Proceedings Volume 4755, (2002) https://doi.org/10.1117/12.462826

KEYWORDS: Gyroscopes, Microelectromechanical systems, Etching, Electrodes, Resonators, Reactive ion etching, Manufacturing, Sensors, Deep reactive ion etching, Ceramics

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This paper reports on JPL's on-going research into MEMS gyroscopes. [1-4] This paper will describe the gyroscope's fabrication- methods, a new 8-electrode layout developed to improve performance and performance statistics of a batch of six gyroscopes (of the 8- electrode design) recently rate tested. Previously in our group, T. Tang and R. Gutierrez presented the results of their extensive use of ethylene diamine pyrocatechol (EDP) to deep-etch the inertial- sensitive r4esonators and post-supporting structures in a 4- electrode gyroscope design. Today, JPL is utilizing an in-house STS DRIE, replacing the old wet-etching steps. This has demonstrated superior precision in machining symmetry of the resonators, thus significantly reducing native rocking mode frequency splits. A performance test of six gyros has shown an average, un-tuned, frequency split of 0.4% (11Hz split for rocking modes at 2.7KHz). The new JPL MEMS gyroscope has a unique 8-electrode layout, whose large electrodes can provide significant electrostatic softening of the resonator's springs. This allows matching of the Coriolis sensitive rocking modal frequencies to be improved from the native 0.4% to an average tuned frequency split of 0.02%. In separate tests, electrostatic tuning in the 8-electrode design has demonstrated the ability to match frequency-splits to within 10mHz, thus ensuring full degeneracy in even a very high Q device. In addition, a newly selected ceramic package-substrate has improved the device's dampening loses such that a mean Q of 28,000 was achieved in the six gyroscope tested. These Q's ere measured via the ring-down time method. The improved fabrication development and other modifications described have led to the JPL's MEMS gyroscope achieving an average bias instability (Allan variance 1/f floor estimate) of 11degree/hr with best in the group being 2degree/hr. In an independent test, Honeywell Inc. reported one of our MEMS gyroscopes as achieving 1degree/hr bias instability flicker floor estimate measured at constant temperature.

Proceedings Article | 26 October 2000 Open Access

MEMS technology at NASA's Jet Propulsion Laboratory

Thomas George, Sam Bae, Indrani Chakraborty, Hillary Cherry, Christopher Evans, Beverley Eyre, Amanda Green, Allan Hui, Kevin King, H. Lynn Kim, Russell Lawton, Gisela Lin, Colleen Marrese, Juergen Mueller, Judith Podosek, Kirill Shcheglov, Tony Tang, Thomas VanZandt, Stephen Vargo, Joanne Wellman, Victor White, Dean Wiberg, Eui-Hyeok Yang

Proceedings Volume 4134, (2000) https://doi.org/10.1117/12.405340

KEYWORDS: Microelectromechanical systems, Reliability, Sensors, Scanning electron microscopy, Spectroscopy, Liquids, Magnetic sensors, Lithography, Transmission electron microscopy, Actuators

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