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. 17, 2021
Filed:
Aug. 20, 2019
Jvckenwood Corporation, Yokohama, JP;
Minoru Ohyama, Yokohama, JP;
JVCKENWOOD CORPORATION, Yokohama, JP;
Abstract
A virtual image display device includes: a display unit that generates an image display light; and a projection optical system including a main concave mirror that reflects the image display light toward the virtual image presentation plate and an auxiliary concave mirror that reflects the image display light toward the main concave mirror. Defining a reference plane along both a direction of incidence and a direction of output of the image display light on the virtual image presentation plate, the main concave mirror is provided in an orientation that causes the image display light to be incident on the main concave mirror in a direction along the reference plane, and the auxiliary concave mirror is provided in an orientation that causes the image display light to be incident on the auxiliary concave mirror in a direction intersecting the reference plane.