| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a head-up display device for preventing a resolution from being deteriorated even when a virtual image is displayed at a far position from a user.SOLUTION: A video output from a projector 4 is projected to a screen 5, and a video projected to the screen 5 is reflected by a front window 6 of a vehicle 2 so as to be virtually recognized by a crew member 7 of the vehicle so that a virtual image 8 of the video to be visually recognized by the crew member 7 of the vehicle can be generated. Also, the screen 5 is movable along an optical path, and a generation distance as a distance from the crew member 7 of the vehicle to the virtual image 8 to be generated is changeable. Furthermore, when the screen is moved in a direction where the generation distance becomes long, a light source 15 is moved along the optical path to the screen 5 side so that a range where the video is projected to the screen 5 can be changed.</p> |
