System for checking centration of lens surfaces of aspheric...

Details System for checking centration of lens surfaces of aspheric... System for checking centration of lens surfaces of aspheric...

2007-12-14

2010-02-02

Toatley, Jr., Gregory J (Department: 2877)

Optics: measuring and testing

Lens or reflective image former testing

Optical center, cylinder axis, or prism measuring or...

C356S124000, C356S125000

Reexamination Certificate

active

07656513

ABSTRACT:
A system for checking centration of lens surfaces of an aspheric lens includes a light-emitting device, a lens holder and an image processing device. The light-emitting device emits a light. The lens holder positions the aspheric lens in a light path of the light emitted from the light-emitting device. The image processing device receives the light which is emitted from the light-emitting device and has passed through the aspheric lens, and produces an image and shows the image. A quality of the image shown by the image processing device determines a tilt degree of the aspheric lens.

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Yi-Jie Liu, Yu-Chi Lin, Yin-Guo Huang, Mei-Rong Zhao, Xin Zhou,“Study on Measurement System of Centering Errors”, Electronic Measurement Technology, Dec. 2005, pp. 5 to 6, 2005(5),1977-2009 Electronic Measurement Technology Publishing House, China.

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