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:
Nov. 29, 2016
Filed:
Jan. 28, 2015
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventor:
Tatsuaki Funamoto, Shiojiri, JP;
Assignee:
Seiko Epson Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B 3/00 (2006.01); A61B 3/12 (2006.01); A61B 3/14 (2006.01);
U.S. Cl.
CPC ...
A61B 3/0008 (2013.01); A61B 3/12 (2013.01); A61B 3/14 (2013.01);
Abstract
A light source device includes a light source unit, a light condensing unit that includes a condenser lens which condenses light from the light source unit and a collimator which renders the condensed light into parallel light having a predetermined diameter, and a wavelength variable interference filter which emits light having a wavelength depending on a gap dimension of a pair of reflection films. The predetermined diameter is smaller than a size of a facing region of the wavelength variable interference filter where the pair of reflection films faces each other.