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. 11, 2018
Filed:
Jun. 30, 2015
Applicant:
Oji Holdings Corporation, Tokyo, JP;
Inventors:
Assignee:
Oji Holdings Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 27/00 (2006.01); G02B 1/11 (2015.01); G02B 5/02 (2006.01); G02B 1/118 (2015.01);
U.S. Cl.
CPC ...
G02B 1/11 (2013.01); G02B 1/118 (2013.01); G02B 5/0231 (2013.01); G02B 27/0018 (2013.01);
Abstract
An optical element including, on a substrate, an anti-reflection layer on multiple small concave protrusions, which have a modal pitch less than or equal to a wavelength of light in an environment where the optical element is to be used, are formed; in which 80% or more of the concave protrusions include one or more steps, and satisfy the following conditions: 0.12d≤w≤0.17d and 0.42h≤z≤0.52h, in which d is a diameter of the concave protrusions, h is a depth of the concave protrusions, wis a total width of the steps in any cut surface; and zis an average depth of the steps.