Open AccessBidirectional scattering distribution function by screen imaging synthesis
Author(s) -
Yeh Wei Yu,
YenLin Chen,
WeiHsin Chen,
Hen Xiang Chen,
Xuan Hao Lee,
Che Chu Lin,
Ching Cherng Sun
Publication year - 2012
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.001268
Subject(s) - optics , light emitting diode , scattering , light scattering , light field , diode , physics , optoelectronics , computer science
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.