Design of twin computer-generated hologram for absolute testing of aspheric surfaces

Jie Feng; Chao Deng; Tingwen Xing

doi:10.1117/12.2068507

18 September 2014 Design of twin computer-generated hologram for absolute testing of aspheric surfaces

Jie Feng, Chao Deng, Tingwen Xing

Proceedings Volume 9282, 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment; 92821M (2014) https://doi.org/10.1117/12.2068507
Event: 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2014), 2014, Harbin, China

Abstract

Testing of aspheric surfaces by means of computer-generated holograms（CGHs）is well known. To perform an absolute test of rotationally symmetric aspheric surfaces, a specially designed computer-generated hologram (CGH) that reconstructs an aspherical wave as well as a spherical auxiliary wave. Since both phase functions have the same symmetry and their pattern is simultaneously encoded, we call this type of multiplex hologram a Twin-CGH. The spherical wave is used for calibration. The design principle of Twin-CGH is introduced in this paper. We mathematically analyze the Twin-CGH constructed by taking the phase corresponding to the linear combination of two weighted phase functions. We show that this Twin-CGH may be written as a new linear combination for the original phase functions with new weights. Then we absolutely test aspheric surfaces by Twin-CGH.

Citation Download Citation

Jie Feng, Chao Deng, and Tingwen Xing "Design of twin computer-generated hologram for absolute testing of aspheric surfaces", Proc. SPIE 9282, 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 92821M (18 September 2014); https://doi.org/10.1117/12.2068507

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