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:
May. 07, 2019
Filed:
Jan. 29, 2016
Seiko Epson Corporation, Tokyo, JP;
Noriaki Hiraide, Azumino, JP;
SEIKO EPSON CORPORATION, Tokyo, JP;
Abstract
A limiting part limits displacement of an optical member partially fixed to a frame unit, and excessive stress applied on the optical member and deformation of the optical member may be prevented. That is, support strength of the optical member may be improved by supplementarily using the limiting part. Note that the optical member is partially fixed to the frame unit, and fastening parts and the number of parts are reduced and downsizing becomes easier and reduction in weight of the virtual image display device is easier. Further, the optical member is partially fixed to the frame unit, and thus, even when there is a difference in coefficient of thermal expansion between the optical member and the frame unit, the expansion or the like of the optical member with respect to the frame unit is allowed and distortion, deformation, breakage of the optical member may be prevented more reliably.