Fabrication and simulation of optical shaping diffuser to control light patterns

IF 2.7 Q2 PHYSICS, CONDENSED MATTER
Po-Wei Chiu , Tien-Li Chang , Wei-Chun Chen , Yeeu-Chang Lee
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引用次数: 0

Abstract

This study utilizes a 532 nm ps laser micromachining technique on Schott-B270 glass to fabricate micro-lens array (MLA) with optimized curvature and minimal surface roughness, aimed at achieving an optical shaping diffuser. The research demonstrates a two-step fabrication process that combines picosecond laser processing with wet etching, significantly enhancing optical diffusion. Square-shaped micro-lenses with diffusion angles ranging from 29° to 62° were successfully created, along with hexagonal and rectangular shapes. Optical simulations using LightTools, which employed built-in Bezier curves to design micro-lens parameters, analyzed the impact of micro-lens arrangements on light patterns. The simulations indicated that varying the spacing and overlap ratio of the micro-lenses influenced light intensity distribution, achieving uniform light patterns with intensity variations of less than 10 %. Experimental validation through optical measurements confirmed that the fabricated MLA produced well-defined light patterns, demonstrating their effectiveness for various optical applications. This work contributes to advancing the understanding of micro-lens fabrication techniques and their applications in enhancing light distribution.
控制光模式的光学整形漫射器的制造与仿真
本研究利用532 nm ps激光微加工技术在Schott-B270玻璃上制作曲率优化、表面粗糙度最小的微透镜阵列(MLA),旨在实现光学整形扩散器。该研究展示了一种将皮秒激光加工与湿蚀刻相结合的两步制造工艺,显著增强了光学扩散。成功地创建了扩散角从29°到62°的方形微透镜,以及六角形和矩形透镜。使用LightTools进行光学模拟,利用内置的Bezier曲线设计微透镜参数,分析了微透镜排列对光模式的影响。模拟结果表明,改变微透镜的间距和重叠比会影响光强分布,实现光强变化小于10%的均匀光型。通过光学测量的实验验证证实,制造的MLA产生了明确的光模式,证明了它们在各种光学应用中的有效性。这项工作有助于促进对微透镜制造技术的理解及其在增强光分布方面的应用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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CiteScore
6.50
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0.00%
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