Alignment of off-axis asphere and compensator with four poles

Bin Xuan; Xiaoping Chen; Peng Wang; Junfeng Li; Shumei Song; Ya Chen; Jingjiang Xie

doi:10.1117/12.828589

20 May 2009 Alignment of off-axis asphere and compensator with four poles

Bin Xuan, Xiaoping Chen, Peng Wang, Junfeng Li, Shumei Song, Ya Chen, Jingjiang Xie

Proceedings Volume 7283, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment; 72830A (2009) https://doi.org/10.1117/12.828589
Event: AOMATT 2008 - 4th International Symposium on Advanced Optical Manufacturing, 2008, Chengdu, Chengdu, China

Abstract

Aspheres are utilized widely thanks to the development of optical design, manufacture and testing. Compensators are usually necessary when aspheres are under test. The alignment of aspheres and their compensators is a risk because it's tough to check whether the compensators work in right way. A new method of alignment with four poles is put forward in this paper. Optical interval error can be tight while it is quite important due to direct influence on central curvature, conic constant and high order coefficients of aspherical surface. A modified on-axis Foucault apparatus is set up since it makes the optical axis visible and helps to control the error of off-axis amount. Some small holes are drilled in the metallic cell of the compensator so that the ends of poles can be stably relied on in order to increase operational repeatability. The method has been carried out practically and it matches the measurement result given by a set of theodolites.

Citation Download Citation

Bin Xuan, Xiaoping Chen, Peng Wang, Junfeng Li, Shumei Song, Ya Chen, and Jingjiang Xie "Alignment of off-axis asphere and compensator with four poles", Proc. SPIE 7283, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 72830A (20 May 2009); https://doi.org/10.1117/12.828589

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