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비구면 광학계를 적용한 LED 조명의 광학성능 향상에 관한 연구

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Author(s)
이학석
Issued Date
2009
Abstract
Recently, light-emitting diodes (LEDs) have attracted much attention due to their superior characteristics to other conventional light sources e.g., low power consumption, long lifetime, less environmental pollution, and so on. The use of LEDs has been rapidly increasing and this trend is expected to continue in the future. Currently, spherical lenes are commonly employed for LED-lightning, which gives rise to many problems, that include low illuminance, unpleasant feelings in human eyes due to a yellow belt phenomenon, etc., inherent to spherical nature of the lens.
In this thesis, improvement of LED-lightning performance by adopting an aspherical lens is reported. A commercially available lens design software Code VTM (Optical Research Associates) was used to design an aspherical lens for an LED-lightning system and the performance of the system before and after adopting the aspherical lens was analyzed using an illumination design software LightToolsTM (Optical Research Associates). The yellow belt phenomenon was confirmed and improvement of the optical performance of the LED-lightning system adopting the aspherical lens was predicted through the simulations.
The aspherical lens was fabricated using a diamond turning machine and the performances of the LED-lightning system before and after adopting the aspherical lens were measured. It was experimentally observed that the yellow belt phenomenon was noticeably eliminated and the illuminance was increased by adopting the aspherical lens to the LED-lightning system.
Alternative Title
A Study on Optical Efficiency Improvement of LED-Lighting Adopting Aspherical Optical System
Alternative Author(s)
Lee, Hak Suk
Affiliation
조선대학교 광기술공학과
Department
일반대학원 광기술공학과
Advisor
박종락
Awarded Date
2010-02
Table Of Contents
목 차
ABSTRACT

제1장 서 론

제2장 이론적배경 및 실험장비
제1절 조명광학계
제2절 비구면렌즈
제3절 비구면렌즈 가공 및 측정장비

제3장 조명용 LED 모델링 및 시뮬레이션 결과
제1절 조명용 LED 모델링
제2절 비구면렌즈 적용 광학 시뮬레이션 결과

제4장 비구면렌즈 가공 및 측정 결과
제1절 가공용 Jig 설계 및 비구면렌즈 설계
제2절 비구면렌즈 가공 및 측정 결과
제3절 시제품 적용 결과

제5장 결론

[참고문헌]

[감사의 글]
Degree
Master
Publisher
조선대학교
Citation
이학석. (2009). 비구면 광학계를 적용한 LED 조명의 광학성능 향상에 관한 연구.
Type
Dissertation
URI
https://oak.chosun.ac.kr/handle/2020.oak/8511
http://chosun.dcollection.net/common/orgView/200000239371
Appears in Collections:
General Graduate School > 3. Theses(Master)
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