Open AccessDesign of an ultrawide angle catadioptric lens with an annularly stitched aspherical surface
Author(s) -
Dewen Cheng,
Chen Gong,
Chen Xu,
Yongtian Wang
Publication year - 2016
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.002664
Subject(s) - catadioptric system , optics , lens (geology) , achromatic lens , physics , field of view , image quality , optical transfer function , computer science , image (mathematics) , artificial intelligence
We present an ultrawide angle catadioptric lens with a field of view (FOV) of 360° × 270° and F/# of 2.5. The lens consists of two optical configurations: the center configuration is all-refractive and has a FOV of ± 50° and the catadioptric configuration covers the remaining FOV. The MTF at 119lp/mm of the rear FOV (90° to 135°) can be improved by 0.15 via applying an annularly stitched aspherical surface (ASAS) to the rear surface of the catadioptric element. The developed lens presents smaller marginal distortions and higher relative illuminations compared with traditional panoramic lenses. A proof-of-concept prototype producing acceptable image quality is developed.