The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 21, 2021
Filed:
Sep. 13, 2017
Somar Corporation, Tokyo, JP;
Yui Togawa, Tokyo, JP;
SOMAR CORPORATION, Tokyo, JP;
Abstract
A light-shading member for an optical device which has excellent reflection preventing performance can be manufactured by a simple process and can be applied to an optical device which is small and thin. Based on JIS B0601: 2001, the arithmetical mean deviation of the assessed profile Ra of the surface of the light-shading member for an optical device is 0.5 μm or more, and the difference (Rp-Rv) between the maximum profile peak height Rp and the maximum profile valley depth Rv is less than 3. The light-shading member for an optical device preferably has a substrate film and a light-shading layer. The light-shading layer is formed on at least one surface of the substrate film. Further, the light-shading layer has an average film thickness of 2 μm-35 μm.