System for measuring the spatial reflectance distribution of material surfaces

23rd Congress of the International Commission for Optics

Berni, L.A.^1 ; Ribeiro, M.S.^1 ; Paes, T.F.^1 ; Beloto, A.F.^1

Instituto Nacional de Pesquisas Espaciais (INPE), Laboratório Associado de Sensores e Materiais (LAS), 1758, Av. dos Astronautas, São José dos Campos/SP

12227-010, Brazil^1

关键词: Angular resolution;    Anodized aluminum;    Automatic device;    Azimuth angles;    Lambertian;    Material surface;    Stepper motor;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/605/1/012003/pdf
DOI  :  10.1088/1742-6596/605/1/012003

来源: IOP

【 摘 要 】

An automatic device for measuring the reflectance distribution from material surfaces was assembled in the laboratory. The mechanical setup employs two aluminum rotating arms driven by stepper motors: one for the light source and the second for the collecting optics. The two arms can rotate in the zenith direction from -90 to +90 degrees and the light collecting arm in the azimuth angle over 360 degrees, both with adjustable angular resolution. Measurements from black anodized aluminum, PTFE, graphite, porous silicon and a lambertian reference surface were performed to validate the system.