欧博开户官网:漫反射自由曲面的计划要领

新2备用网址/2020-06-21/ 分类:科技/阅读:

提出一种计划自由曲面外观的要领以实现方针面特定地区照度匀称性为常数的方针, 该要领可应用于漫反射曲面间接照明体系。基于抱负漫反射曲面和发光二极管朗伯特征, 推导了方针面照度漫衍函数的方程组。求解方程组获得曲面面型数据, 绕轴旋转获得漫反射自由曲面。按照方针面照明情形成立评价函数用于优化求解阵列间距。对体系用TracePro软件举办非序列光泽追迹仿真, 仿真功效表白漫反射自由曲面间接照明方针面巨细为50 mm圆形地区, 照明间隔为200 mm, 匀称度到达91.5%, 遵从为6.73%。比拟间距优化的线性阵列、环形阵列和矩形阵列下的漫反射自由曲面间接照明与直射照明, 漫反射间接照明照度匀称性更高。仿真功效验证了方案的精确性和有用性。

要害词

Abstract

A method is proposed to design a freeform surface profile, which can make the illumination uniformity of the target surface location be a constant and can be used in the diffuse reflection surface indirect illumination system. Based on the ideal diffuse reflection freeform surface and light emitting diode Lambertian characteristics, equations of target plane illuminance distribution function are derived. The surface profile data is obtained by solving the equations. The diffuse reflection freeform surface is obtained by rotating around the axis. According to the illumination of the target surface, the evaluation function is built to optimize the solution of the array spacing. The non-sequential ray tracing simulation of the system is carried out by using TracePro software. The simulation results show that the target surface size is 50 mm circular area, the illumination distance is 200 mm under the indirect illumination of diffuse reflection freeform surface, the uniformity is 91.5%, and the effectiveness is 6.73%. Indirect illumination and direct illumination at diffuse reflection freeform surface for space optimized linear array, circular array and rectangular array are compared. Illumination uniformity of diffuse reflection freeform surface indirect illumination is better than that of direct illumination. The simulation results verify the correctness and effectiveness of the scheme.

增补资料

中图分类号:TN364+.2;TM923.01

DOI:10.3788/lop54.052201

所属栏目:光学计划与制造

基金项目:国度天然科学基金(51305137)、江西省科技支持打算项目(20151BBE50116)、江西省精巧青年扶助打算(20162BCB23047)、江西省发现专利产业化重点项目(20161BBM26037)

收稿日期:2016-11-02

修改稿日期:2017-03-08

收集出书日期:--

作者单元    点击查看

祝振敏:华东交通大学电气与主动化工程学院, 江西 南昌 330013
罗慧:华东交通大学电气与主动化工程学院, 江西 南昌 330013

接洽人作者:祝振敏(zhuzhenmin1984@163.com)

备注:祝振敏(1984-), 男, 博士, 副传授, 首要从事LED应用光学计划方面的研究。

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