Testing optical aspheric surfaces by aspheric characteristic interferogram

Weimin Zheng; Tianning Cao

doi:10.1117/12.402606

9 October 2000 Testing optical aspheric surfaces by aspheric characteristic interferogram

Weimin Zheng, Tianning Cao

Proceedings Volume 4221, Optical Measurement and Nondestructive Testing: Techniques and Applications; (2000) https://doi.org/10.1117/12.402606
Event: Optics and Optoelectronic Inspection and Control: Techniques, Applications, and Instruments, 2000, Beijing, China

Abstract

The interference pattern of the optical path difference between an aspherical optical surface and the corresponding best fit spherical surface is the Aspherics Characteristic Interferogram (ACI), which can be used as a template to test aspheric optical surfaces without test plates or null compensation systems. This direct interferometry can be used in the optical shop testing and in the digital phase-shifting spherical Fizeau interferometer to achieve high precise aspheric surface testing automatically. We succeeded in testing several aspheric surfaces by this method. ACI is also the base of phasing segmented mirrors, and six small- segmented mirrors were successfully combinated to a large mirror. If used in the infrared red interferometer, strongly aspheric surfaces with asphericity more than 40micrometers can also be tested. Experiments show that the ACI is a fast, effective aspherical surface measurement technique.

Citation Download Citation

Weimin Zheng and Tianning Cao "Testing optical aspheric surfaces by aspheric characteristic interferogram", Proc. SPIE 4221, Optical Measurement and Nondestructive Testing: Techniques and Applications, (9 October 2000); https://doi.org/10.1117/12.402606

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