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:
Oct. 15, 2024
Filed:
Dec. 21, 2021
Seiko Epson Corporation, Tokyo, JP;
Tomonori Matsushita, Chino, JP;
SEIKO EPSON CORPORATION, Tokyo, JP;
Abstract
The wavelength variable optical filter includes a first substrate, a second substrate, and a bonding film, the bonding film is in contact with a first reflective film and a second reflective film to thus join the first substrate with the second substrate, the bonding film has transparency with respect to light of a predetermined wavelength range, and an optical path extending through the first reflective film, the bonding film, and the second reflective film has transparency with respect to light of the predetermined wavelength range and has no peak of transmittance with respect to a wavelength range measured by the wavelength variable filter.