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:
Oct. 13, 2020
Filed:
Dec. 19, 2018
Seiko Epson Corporation, Tokyo, JP;
Shohei Yoshida, Suwa-gun, JP;
SEIKO EPSON CORPORATION, Tokyo, JP;
Abstract
A display device according to the invention includes an image generating unit and a projection optical system. The projection optical system includes an optical element provided with a plurality of curved mirrors. The plurality of curved mirrors are arranged in a first direction so that the curved mirror positioned on a far side from the image generating unit has a greater inclination than that of the curved mirror positioned on a near side to the image generating unit. A duty cycle of a first curved mirror among the plurality of curved mirrors is less than a duty cycle of a second curved mirror, and a pitch of the first curved mirror is less than a pitch of the second curved mirror.