屏幕複合式成像光分布量測儀

Optical Distribution Meter by Screen Image Synthesis System

余業緯(Yeh-Wei Yu) ； 陳瑋鑫(Wei-Hsin Chen) ； 陳彥霖(Yen-Lin Chenn) ； 陳鶴祥(Hen-Xiang Chen) ； 孫慶成(Ching-Cherng Sun)

《科儀新知》 188期 (2012/06) Pp. 4-15

https://doi.org/10.29662/IT.201206.0001

摘要

發光二極體已發展為現代照明之主要光源之一，於照明設計上，第一步就必須掌握光源之光形分布，除此之外，仍需掌握燈具或被照材料之散射特性－雙向散射分布函數，才能達到精確的照明設計。我們發展一種屏幕複合式成像光分布量測儀，其可以快速地量測發光二極體封裝光形分布及雙向散射分布函數。屏幕複合式成像光分布量測儀使用二維屏幕及相機來擷取部分的光場分布，本文闡述其理論計算與校正方法，並實際量測擴散片之雙向散射分布函數。

並列摘要

Light-emitting diodes are common light sources in modern lighting. The optical distribution of an LED package and the bidirectional scattering distribution function (BSDF) of diffusing optical components are important factors in lighting design. This paper proposes an innovative method of measuring both the optical distribution of LEDs and BSDF quickly. The proposed method uses a 2-D screen and a camera to capture the illumination on a screen, and acquires the whole-field optical distribution by synthesizing the images on the screen in different angles. This paper presents theoretical calculations and experimental results demonstrating the construction of the BSDF.