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基于RGBW光源的舞台灯变焦透镜设计

Design of stage lamp with zoom lens based on RGBW light source

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摘要

针对目前舞台灯的光束角可变范围小、照度均匀性差等缺点,在全反射式透镜结构的基础上,基于变焦透镜组原理,设计出一种采用单颗透镜的变焦透镜系统。该系统包括准直透镜和可移动的调焦片,并且使用SolidWorks软件,依次在准直透镜的镜面上进行不规则六边形复眼圆周填充阵列和调焦片的两侧进行六边形复眼圆周阵列设计。经过光学软件LightTools仿真以及实际光照效果检测,此款透镜在匹配S2WP的全彩LED光源后,上述结构能够有效解决RGBW全彩LED光源在舞台灯照明上均匀性和混光差的难题。此外,设计出的舞台灯变焦透镜的光学效率高达87%,可在0 mm~15 mm的调焦范围内,光束角(1/2光强角)的可变范围为4°~53°。

Abstract

For the shortcomings of stage lamps,such as a small changing range of beam angle and a poor uniformity of illuminance, here we presented a single zoom lens system based on the structure of total reflection lens and the principles of zoom lens group. The system was consisted of a collimating lens and a mobile focusing plate. By using SolidWorks software, the mirror plate of collimating lens was filled with circular arrays of irregular pentagon fly’s-eye lens, and a circular array with regular hexagon fly’s-eye lens was built on both side of the focusing plate. After matched with the type of S2WP full color red-green-blue-white(RGBW) LED light source, the system was simulated by using LightTools and the actual illumination efficiency was detected. The results show that, these structures set above can solve the poor performance of uniformity and color mixing on the stage lamp effectively. What’s more, the light utilization efficiency of the stage lamp zoom lens system we presented above can reach up to 87%, and the changing range of beam angle( 1/2 light intensity angle) can be from 4° to 53° under the focusing distance extent from 0 mm to 15 mm.

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中图分类号:TN942.2

DOI:10.5768/jao201738.0505003

所属栏目:光学器件与制造

基金项目:江苏省2015年度普通高校专业学位研究生创新计划项目(SJZZ15_0129)

收稿日期:2017-03-14

修改稿日期:2017-04-18

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作者单位    点击查看

董文娟:江苏大学 机械工程学院,江苏 镇江 212000
石 琳:江苏大学 机械工程学院,江苏 镇江 212000
孟 双:江苏大学 机械工程学院,江苏 镇江 212000
夏 磊:江苏大学 机械工程学院,江苏 镇江 212000
左 慧:江苏大学 机械工程学院,江苏 镇江 212000
丁桂林:江苏大学 机械工程学院,江苏 镇江 212000

联系人作者:董文娟(1449536841@qq.com)

备注:董文娟(1989-),女,陕西渭南人,硕士研究生,主要从事光学系统设计方面的研究。

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引用该论文

Dong Wenjuan,Shi Lin,Meng Shuang,Xia Lei,Zuo Hui,Ding Guilin. Design of stage lamp with zoom lens based on RGBW light source[J]. Journal of Applied Optics, 2017, 38(5): 820-825

董文娟,石 琳,孟 双,夏 磊,左 慧,丁桂林. 基于RGBW光源的舞台灯变焦透镜设计[J]. 应用光学, 2017, 38(5): 820-825

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