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. 12, 2019
Filed:
Mar. 03, 2016
Seiko Epson Corporation, Tokyo, JP;
Koichi Akiyama, Matsumoto, JP;
Takayuki Matsubara, Chino, JP;
SEIKO EPSON CORPORATION, Tokyo, JP;
Abstract
A light source apparatus, an illuminator, and a projector that output a reduced light beam flux in a direction roughly the same as the direction of the optical axis of an incident light beam flux. The light source apparatus includes a light source unit that outputs a light beam flux and a reduction system that includes a plurality of optical elements and reduces the cross section of the light beam flux. The optical elements each have first and second surfaces and first and second reflection surfaces and allow a corresponding light beam of the light beam flux to pass through the first surface, to be incident on the first reflection surface, to be sequentially reflected off the first reflection surface and the second reflection surface, and then to exit through the second surface to shift the optical path of the light beam in a first direction.