Figure analysis and adjustment of a large aperture reflector

Xiao Li Chen; Ning Juan Ruan; Jun Ma; Yun Su

doi:10.1117/12.831434

5 May 2009 Figure analysis and adjustment of a large aperture reflector

Xiao Li Chen, Ning Juan Ruan, Jun Ma, Yun Su

Proceedings Volume 7281, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes; 72810A (2009) https://doi.org/10.1117/12.831434
Event: AOMATT 2008 - 4th International Symposium on Advanced Optical Manufacturing, 2008, Chengdu, Chengdu, China

Abstract

The reflector is influenced by force and temperature more and more seriously with the increasing of reflector diameter. The error analysis and adjustment of reflector is important to satisfy the optical performance. In fact, the error of the reflector include figure error, position error and curvature radius error, which are often coupled and difficult to adjust. The method of the separation of the three type errors and way of adjustment are studied in this paper. The separation of the error is following the belows: first, the deformation of the nods on the reflector surface are analyzed and transfered to sag deformation; second, the position error is obtained by the least-square method and adjusted; third, the residual error is fit with the Zernike polynomial and the curvature radius error is acquired and adjusted, at last; the remained error is the high-frequency figure error. A reflector under the load of heat is simulated and analyzed in this paper with the method above. The results indicate that the error of piston and curvature radius are the major errors, so it is possible to adjust the error of piston and curvature radius alone to improve the quality of reflector in optical system, in order to simplify the mount system of the reflector.

Citation Download Citation

Xiao Li Chen, Ning Juan Ruan, Jun Ma, and Yun Su "Figure analysis and adjustment of a large aperture reflector", Proc. SPIE 7281, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 72810A (5 May 2009); https://doi.org/10.1117/12.831434

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