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강용주,이창수,유경선,현동훈 한국생산제조학회 2019 한국생산제조학회지 Vol.28 No.3
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.