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:
Oct. 01, 2019
Filed:
Sep. 12, 2016
Denso Corporation, Kariya, Aichi-pref., JP;
Tatsuya Sasaki, Kariya, JP;
DENSO CORPORATION, Kariya, Aichi-pref., JP;
Abstract
A head-up display device includes an optical unit that includes a drivable reflecting mirror and adjusts a virtual image display position by driving the mirror, a reduction gear mechanism rotatably including transmission gears, a resilient member that generates restoring force in a direction to engage the gears, and a control unit controlling a rotational position of the stepping motor based on an adjustment command by a vehicle occupant. At least one gear predicted to incur a creep deformation is a specific gear. An environmental temperature of the specific gear where the deformation is predicted is a predicted deformation temperature. A deviation predicted to be caused at the display position by the deformation at the predicted deformation temperature is a predicted display deviation. The control unit corrects the rotational position in a direction to reduce the predicted display deviation when the environmental temperature rises to the predicted deformation temperature or higher.