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. 25, 2023
Filed:
Aug. 24, 2021
Seiko Epson Corporation, Tokyo, JP;
Katsuyuki Uehara, Azumino, JP;
SEIKO EPSON CORPORATION, Tokyo, JP;
Abstract
A light source device includes a light emitting element, and a microlens array having a first multi-lens surface and a second multi-lens surface. The light which enters the first multi-lens surface has an angular distribution. The first multi-lens surface has a plurality of first cells arranged in an array, and the second multi-lens surface has a plurality of second cells arranged in an array. Light proceeding from one of the first cells toward the second multi-lens surface has a first light beam which enters one second cell, and a second light beam which enters another second cell different from the one second cell. A first area of an illumination target is irradiated with the first light beam, and a second area of the illumination target different from the first area is irradiated with the second light beam.