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:
Dec. 20, 2022
Filed:
Dec. 05, 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 () 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 to 1200 nm is incident on the optical filter () at an incident angle of 0°, the optical filter () satisfies given spectral transmittance requirements. When an average of absolute values of differences each between a value of a normalized spectral transmittance for an incident angle x° and a value of a normalized spectral transmittance for an incident angle y° in the wavelength range of W nm to V nm (W<V) is expressed as ΔT, the optical filter () satisfies requirements ΔT≤3%, ΔT≤3%, and ΔT≤3%.