Development of an instrument for measuring curvature of a lens

Chilie Tan; Bin Lin; Bo Chen; Xiangqun Cao; Taicai Pan; Wei Jin

doi:10.1117/12.677962

19 May 2006 Development of an instrument for measuring curvature of a lens

Chilie Tan, Bin Lin, Bo Chen, Xiangqun Cao, Taicai Pan, Wei Jin

Proceedings Volume 6150, 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment; 615005 (2006) https://doi.org/10.1117/12.677962
Event: 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies, 2005, Xian, China

Abstract

A new edge detection method based on nonlinear fitting is used in the measurement of the curvature of lens in this paper. Non-contact Newton's rings are formed by an interferometer. In order to detect the diameters of dark rings and calculate the lens radius of curvature, the edge detection method is used for the image process. The auto-measuring system of lens curvature captures the gray scale image by CMOS image sensor, and then processes the data and calculates the position by a microprocessor. The scale of image pixels corresponding to Newton's rings that are related to the radius of curvature is obtained by scanning fringes or other optical methods. The accuracy of measurement is better than 0.3 percent.

Citation Download Citation

Chilie Tan, Bin Lin, Bo Chen, Xiangqun Cao, Taicai Pan, and Wei Jin "Development of an instrument for measuring curvature of a lens", Proc. SPIE 6150, 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 615005 (19 May 2006); https://doi.org/10.1117/12.677962

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