Effect of optical package structure of LED to intensity distribution

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Effect of optical package structure of LED to intensity distribution

Article | 更新时间：2020-08-12

- Effect of optical package structure of LED to intensity distribution
- Optics and Precision Engineering Vol. 16, Issue 5, Pages: 832-838(2008)
- 作者机构：
  
  上海大学
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：09 October 2007，
  
  Revised：20 November 2007，
  
  Published Online：22 May 2008，
  
  Published：22 May 2008
- 稿件说明：
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屠大维. LED封装光学结构对光强分布的影响研究[J]. 光学精密工程, 2008,16(5):832-838

Effect of optical package structure of LED to intensity distribution[J]. Optics and precision engineering, 2008, 16(5): 832-838.
屠大维. LED封装光学结构对光强分布的影响研究[J]. 光学精密工程, 2008,16(5):832-838 DOI：

Effect of optical package structure of LED to intensity distribution[J]. Optics and precision engineering, 2008, 16(5): 832-838. DOI：

摘要

从发光二极管的发光原理及结构出发，建立了发光二极管的光学模型，获得了发光二极管的光强分布曲线，并与实际测量数据进行了比较。通过改变模型中反光碗的张角、支架的插入深度、封装环氧树脂折射率以及透镜尺寸，得到不同结构参数下的光强分布。实验结果表明：反光碗张角、支架插入深度、封装环氧树脂折射率以及透镜尺寸对LED光强分布的影响有一定的规律性。这些规律对生产特定光强分布需求的LED具有实际的指导意义。

Abstract

In order to realize the main factors affecting intensity distribution of light emitting diode

optical model of the traditional light emitting diode was constructed

which was based on the luminescence principle and structure of the traditional light emitting diode. Intensity distribution plot of the light emitting diode was obtained

and comparison was carried out between data measured by the manufactory and the results got from this research. By changing the field angle of the reflecting cup successively

the distance from the top of the light cup to the bottom of the light emitting diode

the refractive index of Araldite and the dimension of the optical lens

it appeared that light emitting diode owned different intensity distributions

and four groups of intensity distribution plots were got. Experiental results indicate that with the field angle of the reflecting cup being enhanced

the depth of framework thrust into the light emitting diode being increased

the refraction coefficient of Araldite being enhanced and the dimension of optical lens being increasing

the intensity distribution changes abiding by some laws

and these laws could be used to guide the production of light emitting diode.

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