Design of multi-spectrum BRDF measurement system
Chinese Optics Letters, Vol. 5, Issue 3, pp. 168-171 (2007)
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Abstract
A multi-spectrum bidirectional reflectance distribution function (BRDF) measurement system was developed with the adoption of single reference standard measurement method. An arm-adjustable corner device was designed for the BRDF system. Changing the distance to the sample by moving the detector arm made the device applicable to different wavelengths. The system could be used for the spectrum range from visible light (0.6328 microns) to mid-far infrared (10.6 microns), the facular size between 0.8-3 cm. The rotating limit of detector arm was +-180 deg., the rotation range of sample holding table was 360 deg., and the angle resolution was 0.036 deg.. A silicon carbide sample was measured using this system with reflectance zenith from -55 to +55 deg.. According to the error analysis, the measurement uncertainty of this device was about 6.42%.
© 2007 Chinese Optics Letters
OCIS Codes
(070.1170) Fourier optics and signal processing : Analog optical signal processing
(120.5820) Instrumentation, measurement, and metrology : Scattering measurements
(220.4830) Optical design and fabrication : Systems design
(290.5820) Scattering : Scattering measurements
Citation
Zhongyi Zhao, Chao Qi, and Jingmin Dai, "Design of multi-spectrum BRDF measurement system," Chin. Opt. Lett. 5, 168-171 (2007)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-5-3-168
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