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. 07, 2021
Filed:
Jul. 24, 2020
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01J 3/28 (2006.01); G01J 3/26 (2006.01); G02B 5/28 (2006.01);
U.S. Cl.
CPC ...
G01J 3/2823 (2013.01); G01J 3/26 (2013.01); G02B 5/28 (2013.01); G01J 2003/2826 (2013.01);
Abstract
A spectroscopic camera includes an interference filter including a pair of reflection films and an imaging device that captures image light passing through the pair of reflection films. The interference filter is provided with a marker that changes the characteristic in accordance with which the image light passes, and the marker is provided in a position where the marker overlaps with the optical path of the image light that passes through the pair of reflection films.