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Head-up display

  • US 10,001,646 B2
  • Filed: 05/13/2015
  • Issued: 06/19/2018
  • Est. Priority Date: 05/14/2014
  • Status: Active Grant
First Claim
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1. A head-up display that projects display light to a projection member, the head-up display comprising:

  • a beam generator that emits a beam of light as the display light;

    a scanner including a moveable reflective surface, the scanner receiving the display light from the beam generator and scanning the display light;

    an optical actuator that integrally rotates the beam generator and the scanner to change a scanner angle of incidence of the display light at the scanner;

    a screen that receives the display light from the scanner and reflects the display light;

    a concave mirror that receives the display light from the screen and reflects and expands the display light to the projection member;

    a concave mirror actuator that changes, based on external instructions, a concave mirror angle of incidence of the display light at the concave mirror by rotating the concave mirror; and

    a controller including a CPU and a memory, whereinthe display light travels between the beam generator, the scanner, the screen, the concave mirror, and the projection member substantially along a common plane, andthe controller is programmed to drive, based on the concave mirror angle of incidence, the optical actuator to change the scanner angle of incidence such that display light distortions generated at the concave mirror are offset by display light distortions generated at the scanner.

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