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:
Apr. 05, 2016
Filed:
Oct. 30, 2014
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventor:
Yutaka Yamaguchi, Utsunomiya, JP;
Assignee:
CANON KABUSHIKI KAISHA, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 15/04 (2006.01); B32B 7/02 (2006.01); G02B 27/00 (2006.01);
U.S. Cl.
CPC ...
B32B 15/04 (2013.01); B32B 7/02 (2013.01); G02B 27/00 (2013.01); B32B 2307/418 (2013.01); B32B 2551/00 (2013.01); Y10T 428/2495 (2015.01); Y10T 428/24942 (2015.01);
Abstract
An optical element includes an antireflection film. The antireflection film includes an uppermost layer having a refractive index nd of 1.20 to 1.30, a high refractive index layer having a refractive index of 2.00 to 2.40, and at least one of an intermediate refractive index layer having a refractive index of 1.55 to 1.70 and a low refractive index layer having a refractive index of 1.40 to 1.52. The predetermined condition is satisfied.
Yamaguchi, Yutaka. (2016). Optical element, optical system, and optical apparatus (U.S. Patent No. 9302450). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9302450
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile