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http://dx.doi.org/10.3807/KJOP.2020.31.2.081

Study of a Searchlight Lens to Improve Optical Performance and Fabricability  

Jo, Ye-Ji (Department of Nano-optical Engineering, Korea Polytechnic University)
Jung, Mee-Suk (Department of Nano-optical Engineering, Korea Polytechnic University)
Publication Information
Korean Journal of Optics and Photonics / v.31, no.2, 2020 , pp. 81-87 More about this Journal
Abstract
This study examines the design technology of searchlight optics featuring narrow beam angles and high luminous intensities. Halogen and xenon lamps, which are conventional searchlight sources, are vulnerable to vibration and shock, and are large and heavy, making them difficult to transport. In addition, the parabolic mirror located at the rear of the searchlight has the disadvantages of poor performance and low light efficiency, due to the assembly error produced during manufacturing. To solve this problem, a 1-kW halogen lamp is replaced by a 150-W high-power COB LED, and a high-efficiency TIR lens is designed to meet the target performance. Afterward, the TIR lens array is proposed to solve the surface error generated during optical injection. After a prototype is manufactured based on the designed optical system, the optical performance is confirmed to be excellent, by comparing it to that of a commercial halogen-lamp searchlight.
Keywords
Optical design; Lens design; Lighting optics; LED;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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