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. 16, 2019
Filed:
Dec. 05, 2017
Seiko Epson Corporation, Tokyo, JP;
Akira Egawa, Shiojiri, JP;
SEIKO EPSON CORPORATION, Tokyo, JP;
Abstract
An illumination device includes: a plurality of light-emitting elements; a collimating optical system; a first multi-lens array including a plurality of first lenses; a second multi-lens array including a plurality of second lenses; and a superimposing lens. The plurality of second lenses are arranged respectively corresponding to the plurality of first lenses. The plurality of first lenses form a plurality of first lens columns. A width, in a first direction, of one second lens of the plurality of second lenses has a distribution in a second direction, where the first direction is a direction in which the plurality of first lens columns are arranged and the second direction is a direction orthogonal to the first direction.