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Research of Transmissivity Measurement Technology in Wide Spectrum and Wide Beam System

Author: HuiFei
Tutor: AnZhiYong
School: Changchun University of Science and Technology
Course: Optical Engineering
Keywords: Transmittance Wide spectrum Wide beam Lock-in amplifier
CLC: TH74
Type: Master's thesis
Year: 2011
Downloads: 22
Quote: 0
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Abstract


The transmittance of the optical system is the ratio of the flux and the incident light flux of the exit means of an optical instrument , it reflects the energy loss of the optical system , is one important indicator of the test optical system . This paper on the the transmittance test system research and analysis , the development of the for various sights optical system transmittance test instrument . The system uses a reflective optical system using a spectral modulation method to design a fully symmetric dual-channel test system . Characterized by testing a wide spectral range , in the bright field test environment ; the test beam caliber φ60mm, to avoid the impact of the optical element material itself and the film uniformity due to local differences ; take advantage of the lock-in amplifier signal the acquisition , effective extraction of the weak signal submerged in noise , improve test accuracy . This paper introduces the system works on the optical system , the research and design of the various subsystems of the mechanical structure of the system and data acquisition system and experimental validation of the system , test accuracy is up to 0.5% .

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CLC: > Industrial Technology > Machinery and Instrument Industry > Instruments, meters > Optical instruments
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