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:
May. 14, 2019
Filed:
Mar. 10, 2017
Canon Kabushiki Kaisha, Tokyo, JP;
Yoji Teramoto, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An optical member includes a light-transmitting substrate having a surface including an optically effective area and an optically non-effective area, the optically effective area and the optically non-effective area being located adjacent relative to each other, the optically effective area and the optically non-effective area forming an angle of not less than 45 degrees and not more than 90 degrees on the border thereof. The optical member has a textured structure having an in-plane dimension of not greater than the use wavelength, the structure being formed continuously in a boundary area extending along the border of the optically effective area and the optically non-effective area, and a light-shielding film formed in a region including at least the boundary area of the optically non-effective area on the surface of the substrate.