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:
Mar. 17, 2015
Filed:
Jun. 20, 2013
Seiko Epson Corporation, Tokyo, JP;
Takeshi Nozawa, Suwa, JP;
Seiko Epson Corporation, , JP;
Abstract
An optical filter includes a first variable wavelength bandpass filter that extracts light of a first wavelength band and has first and second spectral bands and a second variable wavelength bandpass filter that extracts light of a second wavelength band adjacent to the first wavelength band and has third and fourth spectral bands. Part of the period during which the light of the first spectral band is extracted overlaps with the period during which the light of the third spectral band is extracted, and part of the period during which the light of the second spectral band is extracted overlaps with the period during which the light of the fourth spectral band is extracted.