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Proceedings Paper

Rotation angle system of bidirectional reflectance distribution function measurement device
Author(s): Houping Wu; Guojin Feng; Chundi Zheng; Ping Li; Yu Wang
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Paper Abstract

This article described the rotation angle system of the bidirectional reflectance distribution function (BRDF) measurement device. A high-precision multidimensional angle platform device is built. The rotation angle system uses two scanning rotational mechanical arms and a two-dimensional coaxial turntable mechanical structure, each rotational axis are driven by high-power motor and completed closed-loop control with high-precision encoder. Rotation of the motors can be automatically measured in accordance with point by the control software. The detecting arm can be rotated to measure any point in hemisphere space, the rotary range of light arm is ± 90 °, the rotary range of sample stage is 360 ° and the angular resolution is 0.01°. The rotation angle system meets the absolute positioning hemisphere space requirements of BRDF device. The experimental result shows that the rotation angle system met the high-precision positioning requirements for the BRDF absolute measurement.

Paper Details

Date Published: 8 October 2015
PDF: 5 pages
Proc. SPIE 9677, AOPC 2015: Optical Test, Measurement, and Equipment, 967728 (8 October 2015); doi: 10.1117/12.2202753
Show Author Affiliations
Houping Wu, National Institute of Metrology (China)
Guojin Feng, National Institute of Metrology (China)
Chundi Zheng, National Institute of Metrology (China)
Ping Li, National Institute of Metrology (China)
Yu Wang, National Institute of Metrology (China)

Published in SPIE Proceedings Vol. 9677:
AOPC 2015: Optical Test, Measurement, and Equipment
Sen Han; Jonathan D. Ellis; Junpeng Guo; Yongcai Guo, Editor(s)

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