Optimization of BRDF measurement method using Spectralon white reflectance standard

Hui-Rong Tao; Xing-Hua Qu; Fu-Min Zhang; Yuan-Qing Zhu

doi:10.1117/12.2035690

10 October 2013 Optimization of BRDF measurement method using Spectralon white reflectance standard

Hui-Rong Tao, Xing-Hua Qu, Fu-Min Zhang, Yuan-Qing Zhu

Proceedings Volume 8916, Sixth International Symposium on Precision Mechanical Measurements; 89160S (2013) https://doi.org/10.1117/12.2035690
Event: Sixth International Symposium on Precision Mechanical Measurements, 2013, Guiyang, China

Abstract

There are two kinds of methods to measure the bidirectional reflectance distribution function (BRDF), direct method and relatively method. The relatively method is widely used because of its convenience and small error. However, the BRDF of the Spectralon white reflectance standard in relatively method was found to deviate from the Lambertian BRDF. It was found to vary with the angle of incidence, the wavelength of incidence and the states of polarization of the incident and reflected light. This paper proposes an optimized measurement formula of BRDF. The result is corrected. Taking the BRDF of standard roughness specimens for example, experimental results show that the measurement accuracy is improved comparing with the original formula. Finally the error analysis is carried out on the accuracy of measurement. The research has certain reference significance for the study of target characteristics on non-cooperative target ranging.

Citation Download Citation

Hui-Rong Tao, Xing-Hua Qu, Fu-Min Zhang, and Yuan-Qing Zhu "Optimization of BRDF measurement method using Spectralon white reflectance standard", Proc. SPIE 8916, Sixth International Symposium on Precision Mechanical Measurements, 89160S (10 October 2013); https://doi.org/10.1117/12.2035690

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KEYWORDS

Bidirectional reflectance transmission function

Reflectivity

Error analysis

Sensors

Calibration

Light sources

Standards development

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