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:
Apr. 13, 2021
Filed:
Dec. 18, 2017
Maxell, Ltd., Kyoto, JP;
Yuki Nagano, Oyamazaki, JP;
Nozomu Shimoda, Oyamazaki, JP;
MAXELL, LTD., Kyoto, JP;
Abstract
The present invention provides a head-up display apparatus capable of both long-distance display and short-distance display. A functional filmis mounted on a glare trap partof a head-up display apparatus. In order to display a first virtual image, a first image display deviceprojects a first image onto a windshieldvia the glare trap part. In order to display a second virtual imagehaving a different display distance, a second image display devicegenerates a second image on the functional film and projects the second image onto the windshield. For the functional film, a variable transmittance film having a light transmittance that varies according to the applied voltage or a transparent self-luminous film in which an irradiated portion emits light when irradiated with a laser beam of a specific wavelength is used.