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公开(公告)号：US20220413196A1
公开(公告)日：2022-12-29
申请号：US17848440
申请日：2022-06-24
Applicant: Northern Digital Inc.
Inventor： Larry Chen , David Willms , Athanasios Tommy Balkos , Shaulaine White
Abstract: A retro-reflective marker comprising a bare retro-reflective layer; a protective layer with a near-infrared (NIR) wavelength specific anti-reflective coating; and a border with an NIR absorbent coating.
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