Bidirectional scattering distribution function by screen imaging synthesis

Yeh Wei Yu, Yen Lin Chen, Wei Hsin Chen, Hen Xiang Chen, Xuan Hao Lee, Che Chu Lin, Ching Cherng Sun

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


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.

Original languageEnglish
Pages (from-to)1268-1280
Number of pages13
JournalOptics Express
Issue number2
StatePublished - 16 Jan 2012


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