Current Optics and Photonics

Optical Society of Korea (한국광학회)
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Gaussian Decomposition Method in Designing a Freeform Lens for an LED Fishing/Working Lamp

  • Nguyen, Anh Q.D. (Nguyen Tat Thanh University) ;
  • Nguyen, Vinh H. (Nguyen Tat Thanh University) ;
  • Lee, Hsiao-Yi (Department of Electrical Engineering, National Kaohsiung University of Applied Sciences)
  • Received : 2016.12.01
  • Accepted : 2017.01.16
  • Published : 2017.06.25
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Abstract

In this paper we propose a freeform secondary lens for an LED fishing/working lamp (LFWL). This innovative LED lamp is used to replace the traditional HID fishing lamp, to satisfy the lighting demands of fishing and the on-board activities on fishing boats. To realize the freeform lens's geometry, Gaussian decomposition is involved in our optics-design process for approaching the targeted light intensity distribution curve (LIDC) of the LFWL lens. The simulated results show that the illumination on the deck, on the sea's surface, and underwater shows only small differences between LED fishing/working lamps and HID fishing lamps. Meanwhile, a lighting efficiency of 91% with just one third of the power consumption can be achieved, when the proposed LED fishing/working lamps are used instead of HID fishing lamps.

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References

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