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公开(公告)号：US20230408741A1
公开(公告)日：2023-12-21
申请号：US18267053
申请日：2021-12-13
Applicant: ISORG
Inventor： Fabien GEOFFRAY , Anthony BARBOT
IPC: G02B5/20
CPC classification number: G02B5/201
Abstract: An optical angular filter includes a network of pillars made of a first transparent material, and an array of walls made of a second opaque material, separating the pillars from one another. The refraction index of the second material is different from that of the first material.
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