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. 29, 2016
Filed:
Jun. 24, 2015
Seiko Epson Corporation, Tokyo, JP;
Mika Koyama, Matsumoto, JP;
Yasuyuki Kobayashi, Matsumoto, JP;
Nobuyuki Otsuki, Matsumoto, JP;
Kiyomasa Shirakura, Matsumoto, JP;
SEIKO EPSON CORPORATION, Tokyo, JP;
Abstract
A projector includes: an external case provided with an opening through which light passes; a projection system disposed within an inside space of the external case, wherein the projection system includes a reflection member having a reflection surface capable of reflecting light received from a light source device to guide the light toward the opening, and projects the light to the outside of the external case via the opening; and a detection unit which detects a foreign material existing on the optical path of the light in the area of light exit of the opening.