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:
Aug. 16, 2022
Filed:
Dec. 21, 2020
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Satoshi Kuzuhara, Osaka, JP;
Hiroaki Okayama, Nara, JP;
Abstract
A head-up display for displaying an image as a virtual image to an observer includes a projection optical system that includes a lens element and a reflecting mirror. A light beam reaching a center of a viewpoint region of the observer and corresponding to a center of the virtual image is defined as a reference light beam. The lens element is inclined with respect to the reference light beam. The lens element includes an entrance surface on which light of the image is incident, an exit surface from which light of the image emerges, a first edge portion, and a second edge portion. The second edge portion is inclined so that, when light emitted from the image travels through the entrance surface, the second edge portion, and the exit surface in this order, light emerging from the exit surface reaches below a central portion of the reflecting mirror.