双向反射分布函数绝对量值复现的系统设计

刘子龙; 廉玉生; 王佳佳; 廖宁放; 王煜

doi:doi:10.3788/aos201131.s100404

光学学报, 2011, 31 (s1): s100404, 网络出版: 2011-06-23

双向反射分布函数绝对量值复现的系统设计

System Design for Absolute Value Realization of Bidirectional Reflectance Distribution Function Value

论文大纲

刘子龙 ^1,2,*廉玉生 ¹王佳佳 ¹廖宁放 ¹王煜 ²

作者单位

¹ 北京理工大学光电学院，北京 100081

² 中国计量科学研究院光学所，北京 100013

摘要

双向反射分布函数（BRDF）是材料表面光学反射性能的重要指标。大多数测量系统都以理论上对入射照度和反射亮度的分别测量，结构上直观的弓型结构半球空间模拟为基础建立。为了提高BRDF量值计量的不确定度，提出了一种新型的BRDF绝对量值复现系统设计。理论上将所有测量量转化为一个测量量并用一个探测器实现测量，结构上尽可能减少光源和探测器等精密部件的空间转动，而以样品的多维转动实现BRDF的空间定位。实验分析表明，这样的系统设计提高了测量的不确定度，适合做BRDF的绝对量值复现，实现绝对测量，而传统的弓型结构适合做BRDF的相对测量，实现应用终端的大量测量。

Abstract

Bidirectional reflectance distribution function (BRDF) is an important reflective parameter of object surface. In many measurement systems, the value is achieved in a bow-liked mechanism which simulates the hemi-sphere space, and the incident illuminance and reflect luminance are measured respectively. To raise the uncertainty of BRDF value measuring, a new BRDF absolute value realization system is established. All factors which should be measured are translated to one factor in theory. In structure design, the movement of light source and detector are reduced indeed. The realization of angles for measurement depends on the rotation of sample in multi-dimension. This design is fit for BRDF absolute measurement and it improves the uncertainty.

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刘子龙, 廉玉生, 王佳佳, 廖宁放, 王煜. 双向反射分布函数绝对量值复现的系统设计[J]. 光学学报, 2011, 31(s1): s100404. Liu Zilong, Lian Yusheng, Wang Jiajia, Liao Ningfang, Wang Yu. System Design for Absolute Value Realization of Bidirectional Reflectance Distribution Function Value[J]. Acta Optica Sinica, 2011, 31(s1): s100404.

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