Chromatically Multi-Focal Optics based on Micro Lens Array Design

DOI码：10.1364/OE.391674

发表刊物：Optics Express

摘要：CCD arrays encode color information via uniformly distributed red, green and blue pixels. Therefore, even a perfectly achromatic system projecting an image onto a CCD plane cannot possibly associate a single object point with the 3 or more discrete pixels encoding color content. Here, we propose and demonstrate a micro-lens array (MLA) design that simultaneously corrects chromatic aberrations and separates color channels to spatially distinct pixels. Starting from a commercially available aspheric condenser lens, methods to design and assess the performance of a few microns deep MLA etched on the convex optical surface are detailed. Actual fabrication is carried out by fluid jet polishing, with an optical form deviation of 0.24 mu m rms. Finally, the MLA is assessed with a narrowly collimated beam containing two wavelengths, which produces distinct spots of diameter 10-15 mu m as expected. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

论文类型：SCI

卷号：28

期号：16

页面范围：24123-24135

是否译文：否

收录刊物：SCI

发布期刊链接：https://doi.org/10.1364/OE.391674