Analysis of optical systems with extended depth of field using the Wigner distribution function.
We describe the use of a Wigner distribution function approach for exploring the problem of extending the depth of field in a hybrid imaging system. The Wigner distribution function, in connection with the phase-space curve that formulates a joint phase-space description of an optical field, is employed as a tool to display and characterize the evolving behavior of the amplitude point spread function as a wave propagating along the optical axis. It provides a comprehensive exhibition of the characteristics for the hybrid imaging system in extending the depth of field from both wave optics and geometrical optics. We use it to analyze several well-known optical designs in extending the depth of field from a new viewpoint. The relationships between this approach and the earlier ambiguity function approach are also briefly investigated.
Yang
Qingguo
Q
Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, China. yungore@ustc.edu
Liu
Liren
L
Sun
Jianfeng
J
Zhu
Yongjian
Y
Lu
Wei
W