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:
Sep. 15, 2020
Filed:
Nov. 30, 2017
Applicant:
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Inventor:
Tomoaki Miyamoto, Osaka, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 27/01 (2006.01); B60K 35/00 (2006.01); G02B 27/18 (2006.01);
U.S. Cl.
CPC ...
G02B 27/0101 (2013.01); B60K 35/00 (2013.01); G02B 27/0149 (2013.01); G02B 27/18 (2013.01); B60K 2370/334 (2019.05); G02B 2027/011 (2013.01); G02B 2027/0123 (2013.01);
Abstract
A virtual image display device includes: a projection member that projects an image; and a projection optical system that forms a virtual image. A virtual image distance from an observer to the virtual image is not less than 2,500 mm. The projection optical system has one or more reflectors. A reflection surface of a final reflector that is included in one or more reflectors and finally reflects a light ray satisfies the following Conditional Relation 1:10°≤|θmax−θmin|≤30°  Conditional Relation 1