High resolution test for large optics with sub-pixel phase retrieval method

Xiaojun Hu; Shengyi Li; Yulie Wu

doi:10.1117/12.783297

27 November 2007 High resolution test for large optics with sub-pixel phase retrieval method

Xiaojun Hu, Shengyi Li, Yulie Wu

Proceedings Volume 6723, 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment; 67232C (2007) https://doi.org/10.1117/12.783297
Event: 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 2007, Chengdu, China

Abstract

For large mirror test, there is growing need to increase the spatial resolution of the test instrument, when testing large optics. A novel test method is introduced to achieve high spatial resolution based on phase retrieval method that splits each pixel of CCD into sub-pixels by numeric processing. Because the more images are captured, the more information of wave front is gathered to confirm the state of each sub-pixel, the sub-pixel phase retrieval needs multi-images and also more calculation power to process these images. Numerical experiments shows that more than 4 times of resolution of traditional phase retrieval method can be achieved by this method.

Citation Download Citation

Xiaojun Hu, Shengyi Li, and Yulie Wu "High resolution test for large optics with sub-pixel phase retrieval method", Proc. SPIE 6723, 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 67232C (27 November 2007); https://doi.org/10.1117/12.783297

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