Patent ID: 9242604
Filing Date: 2016-01-26
CPC Classification: B60K,B60R,G02B,G09G

Claim Text:
1. A head-up display device comprising: a display unit configured to emit display light representing a display image; a combiner configured to have a concave surface to which the display light emitted by the display unit enters, and to concentrate the incident display light to allow an observer to see the display image from the concave surface side superimposed on a background of the front; and an optical detector configured to be positioned below the combiner, and detects brightness of light reached, wherein the combiner has a light guide body that is integrated with the combiner at a lower end part thereof, the light guide body has a facing surface that faces the optical detector in a vertical direction, guides external light from at least one of the front and above downward, of the external light incident, and emits the external light guided downward from the facing surface, and the optical detector detects brightness of the light emitted from the facing surface.