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. 18, 2023
Filed:
Sep. 19, 2018
Nippon Sheet Glass Company, Limited, Tokyo, JP;
Tomitaka Takagi, Tokyo, JP;
Katsuhide Shimmo, Kanagawa, JP;
NIPPON SHEET GLASS COMPANY, LIMITED, Tokyo, JP;
Abstract
An optical filter () includes a light-absorbing layer (). The light-absorbing layer absorbs light in at least a portion of the near-infrared region. When light with a wavelength of 300 nm to 1200 nm is incident on the optical filter () at incident angles of 0°, 30°, and 40°, the optical filter () satisfies given transmittance requirements. Nine differences each obtained as a difference between one and another of IE, IE, and IEdefined for incident angles θ° of 0°, 30°, and 40° satisfy given requirements, and ranges satisfy given requirements, each range being a difference obtained by subtracting the smallest value of three differences from the largest value of the three differences, the three differences obtained from IE, IE, and IEcollectively defined for the same pair selected from the incident angles θ°.