SHI Yong-sheng, MAI Di, NING Lei. Realization of LED uniform lighting on different occasions[J]. Journal of Applied Optics, 2011, 32(4): 613-617.
Citation: SHI Yong-sheng, MAI Di, NING Lei. Realization of LED uniform lighting on different occasions[J]. Journal of Applied Optics, 2011, 32(4): 613-617.
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Realization of LED uniform lighting on different occasions

  • Department of Electrical &Informational Engineering,Shaanxi University of Science and Technology,Xi-an 710021,China

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    • Abstract
  • The characteristics of the light emitting diode （LED）limit its applications in various lighting fields. The allocation of LED power to form an ideal luminance on a target plane was investigated. This paper analyzed the designs of optical systems on different applications, obtained the formula of the lens by adopting etendue conservation method in non-imaging optics, achieved round uniform illumination with 85% uniformity and rectangular uniform illumination with 75% uniformity, established the 3D model of the freeform lens, and conducted the ray tracing based on TracePro. The simulation results meet the corresponding standard, which validates the design.
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    • References (1)
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    ［11］杜雪,王尔祺,李荣彬,等.自由曲面光学透镜注射成型误差因素研究［J］.应用光学，2007,6(28):684-688.
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