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http://dx.doi.org/10.5207/JIEIE.2012.26.6.001

The Research of the 2nd Lens Design for Wide Angle Distribution  

Joo, Won-Don (삼성전자)
Oh, Sang-Hyeon (한국산업기술대학교 지식기반기술.에너지대학원 광-나노학과)
Publication Information
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers / v.26, no.6, 2012 , pp. 1-7 More about this Journal
Abstract
Recently an optical diffusion of LED lamps has been studied actively. In this paper, the second lens applied to a cover of the LED lamp was analytically designed to having a wide angle distribution of light without diffuser characteristic by dispersing agent. In this process, We found a major factors that can help improve the performance of the lens. It is the refractive power of the lens, the Mie particle density of phosphor, and the arrangement of the LED. Through the final simulation, we can see the LED lamp is possible to get wide angle light distribution by proper source modeling and second lens designing. Also, we can see this simulated results are entirely consistent with measured data for light distribution. In this research, we present the shape of the second lens with wide angle distribution and derive the important factors for the second lens design.
Keywords
LED Lamps; Second Lens; Light Distribution; Wide Angle; Mie Density;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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