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:
Jan. 15, 2019
Filed:
Aug. 25, 2015
Denso Corporation, Kariya, Aichi-pref., JP;
Masayuki Yamaguchi, Kariya, JP;
DENSO CORPORATION, Kariya, Aichi-pref., JP;
Abstract
A head-up display apparatus includes a light source portion that projects light from a light source, a screen member that has a diffusion portion inclined with respect to a hypothetical reference line that extends along a projection direction of the light from the light source, and a light-transmissive optical element that is disposed between the light source portion and the diffusion portion and has a first optical surface exposed to the light source portion and a second optical surface exposed to the diffusion portion. The projection direction corresponds to a center of the image. The diffusion portion diffuses the light from the light source. A distance between the first optical surface and the second optical surface increases in a direction from a side on which the diffusion portion is closer to the light source portion to a side on which the diffusion portion is farther from the light source portion.