Study of measuring the intensity distribution of LED with Lock-in Amplifier

被引：0

作者：

Zhang, Kai ^{[1
]}

Zhang, Yujun ^{[1
]}

Yin, Gaofang ^{[1
]}

Xiao, Xue ^{[1
]}

Wang, Huanbo ^{[1
]}

Guo, Liquan ^{[1
]}

Liu, Wenqing ^{[1
]}

机构：

[1] Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Environm Opt & Technol, Hefei 230031, Peoples R China

来源：

5TH INTERNATIONAL SYMPOSIUM ON ADVANCED OPTICAL MANUFACTURING AND TESTING TECHNOLOGIES: OPTICAL TEST AND MEASUREMENT TECHNOLOGY AND EQUIPMENT | 2010年 / 7656卷

关键词：

Lock-in Amplifier; internal modulation; intensity distribution of light;

D O I：

10.1117/12.863727

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页数：7

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