| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a head-up display device able to project a display image in which uneven brightness is reduced and projection of disturbance light is restrained. <P>SOLUTION: The head-up display device 100 for projecting a display image 10 on a window shield 90 comprises: a liquid crystal display part 30 configured to form a basic image 11 serving as the basis of a display image 10; a standard light source 20 configured to emit light toward the liquid crystal display part 30 from a rear side; a concave mirror 40 configured to project the display image 10 to the window shied 90 by reflecting the optical image of the basic image 11; and a concave cylindrical lens 50 having a concave face 51, which extends along the direction of y-axis, curves inward in the direction of x-axis, and faces the concave mirror 40, and located between the liquid crystal display part 30 and the concave mirror 40 in the position where z-axis is inclined with respect to an optical axis OA extending from the standard light source 20 to the concave mirror 40 by rotating it around the x-axis. <P>COPYRIGHT: (C)2012,JPO&INPIT |
