Open AccessTesting the transmitted wavefront of large aperture and long-focal-length lens with computer-generated hologram
Author(s) -
JianPeng Cui,
Ning Zhang,
Jie Liu,
Di-Long Wu,
Hua Xu,
Dingyao Yan,
Ping Ma
Publication year - 2018
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.26.028067
Subject(s) - optics , wavefront , lens (geology) , holography , focal length , aperture (computer memory) , spatial filter , spatial frequency , adaptive optics , physics , computer science , acoustics
A method for testing the transmitted wavefront of large aperture and long-focal-length lens with a multizone computer-generated hologram (CGH) is proposed. The multizone CGH has 5 zones: one main zone for the null testing of long-focal-length lens and four auxiliary zones for the pre-alignment of measured lens. Both 1st order wavefront and 0th order wavefront of CGH are measured, and 0th order wavefront is used to calibrate the substrate error. To verify this test approach, a 450mm × 450mm multizone CGH is designed and fabricated for testing the spatial filter lens. Experiments and error analysis are carried out. The results show that the desired precision can be reached with use of CGH.