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Proceedings Paper

Study of measuring the intensity distribution of LED with lock-in amplifier
Author(s): Kai Zhang; Yujun Zhang; Gaofang Yin; Xue Xiao; Huanbo Wang; Liquan Guo; Wenqing Liu
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Paper Abstract

By using Digital Lock-in Amplifier LI5640, the intensity distribution of LED is measured, meanwhile compared with two other common measuring methods with the internal modulation. The structure of the research system, the transmitter module, the optical receiving module, the research light path and Digital Lock-in Amplifier LI5640 are all introduced and the analysis based on research results is given. It's proved that the Lock-in Amplifier is superior for weak light signal detecting; also this research system can be the reference of correlative research designs.

Paper Details

Date Published: 11 October 2010
PDF: 7 pages
Proc. SPIE 7656, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 765622 (11 October 2010); doi: 10.1117/12.863727
Show Author Affiliations
Kai Zhang, Anhui Institute of Optics and Fine Mechanics (China)
State Key Lab. of Pulsed Power Laser Technology (China)
Electronic Engineering Institute of PLA (China)
Yujun Zhang, Anhui Institute of Optics and Fine Mechanics (China)
Gaofang Yin, Anhui Institute of Optics and Fine Mechanics (China)
Xue Xiao, Anhui Institute of Optics and Fine Mechanics (China)
Huanbo Wang, Anhui Institute of Optics and Fine Mechanics (China)
Liquan Guo, Anhui Institute of Optics and Fine Mechanics (China)
Wenqing Liu, Anhui Institute of Optics and Fine Mechanics (China)


Published in SPIE Proceedings Vol. 7656:
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment
Yudong Zhang; Jose M. Sasian; Libin Xiang; Sandy To, Editor(s)

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