Belay Gebirie Y, Ottevaere Heidi, Meuret Youri, Vervaeke Michael, Erps Jurgen Van, Thienpont Hugo
Appl Opt. 2013 Aug 20;52(24):6081-9. doi: 10.1364/AO.52.006081.
In conventional multichannel imaging systems, all channels have similar imaging properties [field-of-view (FOV) and angular resolution]. In our approach, channels are designed to have different imaging properties which add multiresolution capability to the system. We have experimentally demonstrated, for the first time to our knowledge, a three-channel imaging system which simultaneously captures multiple images having different magnifications and FOVs on an image sensor. Each channel consists of four aspherical lens surfaces fabricated from four PMMA plates by ultraprecision diamond tooling and of a baffle made from a titanium (Ti) and aluminum (Al) based metal alloy. The integrated imaging system is able to record a FOV of 7.6° with the first channel and 73° with the third channel while having a magnification ratio of about 6 between them. The experimental and simulation results, specifically the FOV and magnification ratios, are comparable, and this paves a way for low-cost, compact imaging systems which can embed smart imaging functionalities.
在传统的多通道成像系统中，所有通道都具有相似的成像特性[视场（FOV）和角分辨率]。在我们的方法中，通道被设计成具有不同的成像特性，从而为系统增加了多分辨率能力。据我们所知，我们首次通过实验证明了一种三通道成像系统，该系统能够在图像传感器上同时捕获具有不同放大倍数和视场的多个图像。每个通道由通过超精密金刚石加工从四个聚甲基丙烯酸甲酯（PMMA）板制造的四个非球面透镜表面以及由钛（Ti）和铝（Al）基金属合金制成的挡板组成。该集成成像系统能够通过第一通道记录7.6°的视场，通过第三通道记录73°的视场，同时它们之间的放大倍数约为6。实验和模拟结果，特别是视场和放大倍数，具有可比性，这为能够嵌入智能成像功能的低成本、紧凑型成像系统铺平了道路。
