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分步法快速实现LED小视场角矩形均匀照明

Step-by-step Method for Quickly Achieving Uniform Rectangular Illumination and Small Divergence Angle with LED

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摘要

提出一种基于分步法控制纵向视场角的改进方法, 可以快速实现LED横纵向小视场角矩形均匀照明。通过设计三个轮廓线可以快速构造三个光学曲面, 基于光学曲面构造折射透镜和紧邻的反射器组成光学系统。系统仿真结果表明, 当光源距透镜内曲面尺寸与光源尺寸的比值大于6时, 光束横向视场角不超过1°, 纵向视场角不超过2.6°, 且照明均匀性大于0.75。该方法为具有小视场角矩形均匀照明要求的光学系统提供了一种有效途径。

Abstract

An improved method to control longitudinal divergence angle based on step-by-step method is proposed to obtain quickly LED small divergence angle rectangular uniform illumination at horizontal and longitudinal directions. Three optical curved surfaces can be constructed quickly through designing three contour lines. The optical system is made up of the reflective lens constructed based on optical curved surface and an adjacent reflector. Simulation results show that when the ratio of the distance between the optical source and the inner curved surface of lens and the optical source size is more than 6, the horizontal divergence angle of the optical beam is less than 1°, the longitudinal divergence angle is less than 2.6°, and the illumination uniformity is more than 0.75. It provides an effective way for optical system with small divergence angle rectangular uniform illumination requirements.

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中图分类号:O435.1

所属栏目:光学设计

基金项目:刘典宏(1990-), 男, 博士研究生, 主要从事非成像光学系统设计方面的研究.

收稿日期:2016-12-28

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刘典宏:海军工程大学 兵器工程系, 武汉 430033
张晓晖:海军工程大学 兵器工程系, 武汉 430033

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引用该论文

LIU Dian-hong,ZHANG Xiao-hui. Step-by-step Method for Quickly Achieving Uniform Rectangular Illumination and Small Divergence Angle with LED[J]. Electro-Optic Technology Application, 2017, 32(1): 6-9

刘典宏,张晓晖. 分步法快速实现LED小视场角矩形均匀照明[J]. 光电技术应用, 2017, 32(1): 6-9

被引情况

【1】卢 鑫,王梓萤. 基于选通晶体的多光谱变焦镜头设计. 光电技术应用, 2017, 32(3): 15-18

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