1 October 2001 Experimental study on the measurement of the curvature radius of a spherical grid
Author Affiliations +
Optical Engineering, 40(10), (2001). doi:10.1117/1.1405158
Abstract
To ensure the manufacturing accuracy of a spherical grid, it is necessary to accurately measure the curvature radius, which is one of its important parameters. A measurement system consisting of precision machinery, a microscope, CCD camera, an image processing unit, a grating measurement system, and a computer control is described. By using image processing, noncontact alignment with high speed and accuracy is achieved. The curvature radius of the grid is obtained accurately through applying least-square fitting for multiple points of the grid. The measuring principle and experiments based on the principle are described. The results show that the repeatability of the measurement is up to ±3 ?m.
Qingxiang Li, Yunqing Wang, Lifen Bai, Zili Zhao, "Experimental study on the measurement of the curvature radius of a spherical grid," Optical Engineering 40(10), (1 October 2001). https://doi.org/10.1117/1.1405158
JOURNAL ARTICLE
5 PAGES


SHARE
RELATED CONTENT

Machine vision monitoring of tool wear
Proceedings of SPIE (December 17 1998)
Automated detection of Karnal bunt teliospores
Proceedings of SPIE (February 02 1998)
Three-degrees-of-freedom precision stage
Proceedings of SPIE (September 10 2002)

Back to Top