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Proceedings Paper

The analysis of optical-electro collimated light tube measurement system
Author(s): Zhenhui Li; Tao Jiang; Guohua Cao; Yanfei Wang
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Paper Abstract

A new type of collimated light tube (CLT) is mentioned in this paper. The analysis and structure of CLT are described detail. The reticle and discrimination board are replaced by a optical-electro graphics generator, or DLP-Digital Light Processor. DLP gives all kinds of graphics controlled by computer, the lighting surface lies on the focus of the CLT. The rays of light pass through the CLT, and the tested products, the image of aim is received by variant focus objective CCD camera, the image can be processed by computer, then, some basic optical parameters will be obtained, such as optical aberration, image slope, etc. At the same time, motorized translation stage carry the DLP moving to simulate the limited distance. The grating ruler records the displacement of the DLP. The key technique is optical-electro auto-focus, the best imaging quality can be gotten by moving 6-D motorized positioning stage. Some principal questions can be solved in this device, for example, the aim generating, the structure of receiving system and optical matching.

Paper Details

Date Published: 9 December 2005
PDF: 7 pages
Proc. SPIE 6024, ICO20: Optical Devices and Instruments, 60240Z (9 December 2005); doi: 10.1117/12.666841
Show Author Affiliations
Zhenhui Li, Changchun Univ. of Science and Technology (China)
Tao Jiang, Changchun Univ. of Science and Technology (China)
Guohua Cao, Changchun Univ. of Science and Technology (China)
Yanfei Wang, Changchun Univ. of Science and Technology (China)

Published in SPIE Proceedings Vol. 6024:
ICO20: Optical Devices and Instruments
James C. Wyant; X. J. Zhang, Editor(s)

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