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. 19, 2026
Filed:
Dec. 21, 2023
Nippon Seiki Co., Ltd., Niigata, JP;
Takeru Kawai, Niigata, JP;
Nippon Seiki Co., Ltd., Niigata, JP;
Abstract
A head-up display device includes: a light emission surface that displays an image and emits display light corresponding to the displayed image; and a concave mirror that reflects the display light toward the windshield, and has an index S, represented in expression S=10.7×Mh+(−8.32)×Mv+(−0.0187)×Wh+(−0.000995)×Wv+0.345×Wi+(−3.52)×Ci+3.90×Dv, which is set to 90 or greater, where Mh and Mv respectively are magnifications in the horizontal and vertical directions of the virtual image with respect to the image in the optical axis position, Wh and Wv respectively are curvature radiuses in the horizontal and vertical direction of the position in which the optical axis reaches in the windshield, Wi is an incident angle of the optical axis into the windshield, Ci is an incident angle of the optical axis into the concave mirror, and Dv is an angle formed between a normal line of the light emission surface and the optical axis of the display light.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile