[ Technical Papers ]

Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 28, No. 3, pp.181-187

ISSN: 2508-5107 (Online)

Print publication date 15 Jun 2019

Received 09 Apr 2019 Revised 17 May 2019 Accepted 27 May 2019

DOI: https://doi.org/10.7735/ksmte.2019.28.3.181

공압발전을 이용한 30W급 LED 방폭등 광학계 연구

강용주^a^{, *} ; 이창수^a ; 유경선^a ; 현동훈^a

Study on 30W LED Explosion Proof Light Optical System Using Air Driver

Yong Ju Kang^a^{, *} ; Chang Soo Lee^a ; Kyung Sun Yoo^a ; Dong Hoon Hyun^a

aGraduate School of Knowledge-based Technology & Energy (Opto-Nanotronics), Korea Polytechnic University, 237, Sangidaehak-ro, Siheung, Gyeonggi-do, 15073, Korea

Correspondence to: ^*Tel.: +82-31-8041-1784 Fax: +82-31-8041-1784 E-mail address: smart1890@ewp.co.kr (Yong Ju Kang).

Abstract

We propose an LED explosion-proof light for a generator-type ballast that produces electricity using air pressure to replace the ballast in current explosion-proof lighting. The lens of the LED explosion-proof light has an aspheric design, and its light distribution was analyzed to assess whether it could provide uniform brightness in the work place. The quantitative goal was achieved via optimization design. A prototype of the LED explosion-proof light with/containing an air driver was manufactured to verify the performance of the lens. Measurement results showed that the cd ratio and light distribution angle decreased, while the flux and efficiency increased as compared to the designed values. The surface roughness of the lens increased slightly, and the light distribution curve changed. As the quantitative target could achieve and reduce the weight, this can also contribute to the development of portable LED lighting with air drivers in the future.

Keywords:

LED, Air driver, Explosion proof, Aspheric, Lens, Optical system

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