Study on depth of field of wavefront coding imaging system

Chao Pan; Jiabi Chen; Dawei Zhang; Songlin Zhuang

doi:10.1117/12.794682

15 September 2008 Study on depth of field of wavefront coding imaging system

Chao Pan, Jiabi Chen, Dawei Zhang, Songlin Zhuang

Proceedings Volume 7073, Applications of Digital Image Processing XXXI; 70732C (2008) https://doi.org/10.1117/12.794682
Event: Optical Engineering + Applications, 2008, San Diego, California, United States

Abstract

The wavefront coding imaging technology is a good approach of extending DOF (depth of field) of imaging optical system with an identical exit pupil. A phase mask being introduced in the exit pupil of the optical system makes the MTF of the system to be defocus-independent. As a result, the DOF of the system is extended without a loss of resolution. How much this technique can extend the DOF of optical system? It was shown by experimental and simulation results of some papers that a wavefront coding imaging system can make the DOF raise an order of magnitude. However, there is no theoretical analysis of DOF extension of wavefront coding technique up to now. In this paper, a special condition under which MTF of wavefront coding system is defocus-independent is discovered by investigating the OTF of the wavefront coding imaging system with cubic phase mask. Based on the condition, an expression of the DOF of wavefront coding imaging system is obtained. The conclusion is verified by the simulation results.

Citation Download Citation

Chao Pan, Jiabi Chen, Dawei Zhang, and Songlin Zhuang "Study on depth of field of wavefront coding imaging system", Proc. SPIE 7073, Applications of Digital Image Processing XXXI, 70732C (15 September 2008); https://doi.org/10.1117/12.794682

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available