Head-up display device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 27, 2018
Grant Date -
Jan 18, 2018
app pub date -
Feb 5, 2016
filing date -
Feb 19, 2015
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A HUD device mounted on a moving body that projects an image on a projection member to virtually display the image includes a projector, a reflector mirror, a stepper motor, a reduction gear mechanism that reduces rotation which is output from the stepper motor and transmitted to the reflector mirror, and a controller that calculates a control step angle for the stepper motor. The controller, when an output direction of the motor according to the control instruction at this determination is the opposite direction as a direction of the rotation of the last time, adds a reverse step angle of the opposite direction, which is equal to or greater than a sum of a reference step angle and a backlash angle of the reduction gear mechanism, to the control step angle.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully