Volume 5 Issue 5
Oct.  2012
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ZHAO Ya-hui, FAN Chang-jiang. Design of combined reflectors used in LED street lamps[J]. Chinese Optics, 2012, 5(5): 520-524. doi: 10.3788/CO.20120505.0520
Citation: ZHAO Ya-hui, FAN Chang-jiang. Design of combined reflectors used in LED street lamps[J]. Chinese Optics, 2012, 5(5): 520-524. doi: 10.3788/CO.20120505.0520

Design of combined reflectors used in LED street lamps

doi: 10.3788/CO.20120505.0520
  • Received Date: 16 Jul 2012
  • Rev Recd Date: 18 Aug 2012
  • Publish Date: 10 Oct 2012
  • A combined reflector for Light Emitting Diode(LED) street lamps is designed to produce a rectangular light spot and uniform lighting in the road, as well as having a simple structure and high light efficiency. Based on the principles of non-imaging optics and mechanical design software, a segmented compound parabolic reflector was designed. The reflecting beams of light from the reflector have an approximately rectangular distribution while the light efficiency can reach 96%. The analysis and simulation results show that the uniformity of illuminance can reach 0.5 over an area of 10 m?30 m when the LED lamp is installed at a height of 10 m. The reflector design when applied to shaping the LED beam into the rectangle shape has a high optical efficiency and low costs. The simulation results show that it can satisfy the current requirement for road lighting.

     

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