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:
Mar. 31, 2020
Filed:
Aug. 01, 2018
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventor:
Yutaka Yamaguchi, Sakura, JP;
Assignee:
CANON KABUSHIKI KAISHA, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 27/09 (2006.01); G03B 11/00 (2006.01); H01L 27/146 (2006.01); H04N 5/225 (2006.01); G02B 27/46 (2006.01); G02B 5/30 (2006.01); G02B 27/10 (2006.01); G02B 27/28 (2006.01); G02B 5/20 (2006.01);
U.S. Cl.
CPC ...
G03B 11/00 (2013.01); G02B 5/3083 (2013.01); G02B 27/0905 (2013.01); G02B 27/106 (2013.01); G02B 27/283 (2013.01); G02B 27/46 (2013.01); H01L 27/14625 (2013.01); H04N 5/2254 (2013.01); G02B 5/20 (2013.01);
Abstract
An optical low-pass filter includes a stack of N (N≥3) optical anisotropic layers each configured to separate an incident ray into a plurality of rays, wherein the following condition is satisfied: Ds≤0.50 Da, where Da [μm] is a total value of ray separation widths of the first to (N−1)th optical anisotropic layers among the N optical anisotropic layers, and Ds [μm] is a distance between a ray having a maximum phase difference and a ray having a minimum phase difference among the rays separated by the first to (N−1)th optical anisotropic layers.