Measurement System of Bidirectional Reflectance-distribution Function

양방향 반사율 분포함수 측정시스템

  • Hwang, Ji-Soo (Center for Temperature & Light, Division of Physical Metrology, Korea Research Institute of Standards and Science)
  • 황지수 (한국표준과학연구원 기반표준본부 온도광도센터)
  • Received : 2010.02.24
  • Accepted : 2010.04.12
  • Published : 2010.04.25


A theory of bidirectional reflectance-distribution function (BRDF), a newly developed BRDF measurement system, and a method for evaluating the uncertainty of BRDF measurements are presented. The BRDF measurement system which measures BRDF in a wavelength range of (380~1500) nm with an angle range of $(-75{\sim}75)^{\circ}$ was installed. The measurement uncertainties, consisting of correlated terms and uncorrelated terms, were evaluated for the BRDF measurement system, resulting in the relative expanded uncertainty less than 3% (k=2).


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