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논문 기본 정보

자료유형
학술저널
저자정보
장재현 (Pukyoung National University) 박광일 (Pukyoung National University) 김종태 (Pukyoung National University) 유영문 (Pukyoung National University)
저널정보
한국조명·전기설비학회 조명·전기설비학회논문지 조명·전기설비학회논문지 제31권 제8호
발행연도
2017.8
수록면
58 - 66 (9page)
DOI
10.5207/JIEIE.2017.31.8.058

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초록· 키워드

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In this paper, Omni-directional LED bulb satisfying Energy Star’s Light Distribution Standard has been studied by optimal optical system design. The LightTools S/W was used for the optical design. The prototype of bulb was manufactured according to the optimized design and evaluated its optical properties.
The COB (Chip on board) type LED package was used as light source. Firstly, the shape of bulb covers based on the spherical, elliptical and cylindrical shape were analyzed by simulating light distribution. The optimal shape of the bulb cover suitable for the light distribution standard was tested and determined by adjusting the height and curvature of each shape. Secondly, three kinds of bulb cover materials with 90%, 66%, and 52% of transmittance were prepared and measured for each scattering distribution characteristics, respectively. Thirdly, the measured scattering distribution data of each cover material was applied to the optimal bulb cover shape, the light distribution simulation of Omni-directional lamp was executed, and then the results were compared to the Energy Star light distribution standard. It was found that the optimal bulb cover shape with a high concentration of diffusing agent of 52% of transmittance satisfied the requirement of Energy Star standard.
Based on the simulation and analysis results, a prototype of Omni-directional LED bulb with the optimal shape and the cover material of 52% of transmittance was manufactured and measured the optical uniformity and back light distribution. Finally it was proved that the prototype satisfied the requirement of Energy Star light distribution standard.

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Abstract
1. 서론
2. Energy Star 배광분포 규격
3. Omni-directional LED bulb 광학계 설계
4. 시뮬레이션 결과 및 분석
5. Omni-directional LED bulb 제작 및 결과 분석
6. 결론
References

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