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:
Jul. 17, 2018
Filed:
Sep. 22, 2014
Seiko Epson Corporation, Tokyo, JP;
Akira Egawa, Shiojiri, JP;
Junichi Okamoto, Fujimi-Machi, JP;
SEIKO EPSON CORPORATION, Tokyo, JP;
Abstract
A projector capable of reliably reducing speckle noise includes a light modulation element which modulates laser light, and a projection optical system on which light emitted from the light modulation element is incident. When the center coordinates of an illumination distribution of laser light in an exit pupil of the projection optical system are x=0 and y=0, normalized illumination at each coordinate is P(x,y), and a calculation range of integration is r (mm), the value of EP determined from a specific numerical expression is set in a range according to the color of laser light.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile