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. 05, 2023
Filed:
Jun. 14, 2019
Applicant:
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02C 7/10 (2006.01); C09B 47/30 (2006.01); C09B 47/00 (2006.01); C09B 23/06 (2006.01); G02B 5/22 (2006.01);
U.S. Cl.
CPC ...
G02C 7/108 (2013.01); C09B 23/06 (2013.01); C09B 47/00 (2013.01); C09B 47/30 (2013.01); G02B 5/223 (2013.01); G02C 7/10 (2013.01); G02C 7/104 (2013.01);
Abstract
A color vision correction filter includes a least one type of dye material and the lowest value of transmittance of the color vision correction filter in a wavelength band ranging from 440 nm to 600 nm, inclusive, is in the range of plus or minus 50 nm of 535 nm.