Chinese Optics Letters, 2003, 1 (7): 07398, Published Online: Jun. 6, 2006   

Stray light suppression in BRDF measurement infrared optical system

Author Affiliations
1 School of Electrical Engineering &
2 Automation, Harbin Institute of Technology, Harbin 150001
Abstract
A set of system based on personal computer for the bi-directional reflectance distribution function (BRDF) measurement was developed, whose laser wavelengths cover 0.6328, 1.34, 3.39, and 10.6 μm from visible to infrared. Stray light in BRDF measurement system was analyzed. It can be reduced and suppressed by the design of the system light path in BRDF measurement system, the choice of the measuring scheme, the processing to the optoelectronic signal, and the radiation control of the optical components and mechanical equipments. So the minimum measurable value of BRDF is less than 10^(-5)/sr.

Chao Qi, Chunling Yang, Wenjuan Li, Jingmin Dai. Stray light suppression in BRDF measurement infrared optical system[J]. Chinese Optics Letters, 2003, 1(7): 07398.

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