Uniform Illumination Study by Light-Emitting Diode Ring Array and Diffuse Reflection Surface

Zhenmin, 祝振敏 Zhu; Xinghua, 曲兴华 Qu; Haiyu, 梁海昱 Liang; Guoxin, 贾果欣 Jia

doi:10.3788/aos20113101.0115001

光学学报

2011

DOI: 10.3788/aos20113101.0115001

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Uniform Illumination Study by Light-Emitting Diode Ring Array and Diffuse Reflection Surface

祝振敏 Zhu Zhenmin¹,

曲兴华 Qu Xinghua²,

梁海昱 Liang Haiyu³

et al.

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Establishment and Solution for a Mathematical Model of Multiple Diffuse Reflection

Zhu

Sun

et al. 2020

IEEE Photonics J.

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The indirect illumination system with diffuse reflection light-emitting diode (LED) is widely applied in various fields that require high illumination uniformity. On the basis of the Lambertian characteristic of LEDs and the ideal diffuse surface, a design method that features a multiple diffuse reflectance freeform surface is proposed and its related mathematical model is established in this paper. A nonlinear algebraic equation is solved to redistribute the energy emitted by the LED to a uniformity illuminated scene. The outline of the diffuse surface is obtained by solving equations numerically. With the use of the ray tracing software TracePro, simulation results show that the effect is generally the best and the uniformity and efficiency are significantly improved compared with other methods when the proportion between the radius of the target surface and the distance between the LED light source and the target surface is 1:4.

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Establishment and Solution for a Mathematical Model of Multiple Diffuse Reflection

Zhu

Sun

et al. 2020

IEEE Photonics J.

View full text Add to dashboard Cite

show abstract

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Uniform Illumination Study by Light-Emitting Diode Ring Array and Diffuse Reflection Surface

Cited by 1 publication

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Establishment and Solution for a Mathematical Model of Multiple Diffuse Reflection

Establishment and Solution for a Mathematical Model of Multiple Diffuse Reflection

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