25 September 2014 Analyzing of light pattern uniformity in multi-chips LED lighting
Author Affiliations +
Abstract
Multiple chips are often bonded in a small single package of LED to obtain higher light flux output. However, the nonuniformity of light pattern always exists due to the high order collimating lamp, which uses the MCLED (Multi-chips LED) as the source. In this paper, the light pattern uniformity of lamp composed of four-in-one MCLED, whose thickness of phosphor layer and the length of lamp are respectively 0.1 mm and 10 mm, is simulated and analyzed. The ray tracing simulated by computer with varying the spacing of chips, concentration of phosphor, shape of lamp, and the corresponding uniformity of light pattern will be analyzed and discussed in detail.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yu-Hsuan Chen, Yu-Hsuan Chen, Chi-Hung Lee, Chi-Hung Lee, Jou-Hui Lin, Jou-Hui Lin, Shih-Hsin Ma, Shih-Hsin Ma, } "Analyzing of light pattern uniformity in multi-chips LED lighting", Proc. SPIE 9192, Current Developments in Lens Design and Optical Engineering XV, 91921B (25 September 2014); doi: 10.1117/12.2061552; https://doi.org/10.1117/12.2061552
PROCEEDINGS
7 PAGES


SHARE
RELATED CONTENT

Color rendering properties of LED light sources
Proceedings of SPIE (November 26 2002)
Linear lighting systems for shelf and cove lighting
Proceedings of SPIE (September 13 2005)
Automotive LED lamp lighted appearance
Proceedings of SPIE (May 14 2001)

Back to Top