| 摘要 |
By projection of a display light image (4) from a projector (10) to a combiner (20), virtual images (4I, 4I') of the display light image (4) are displayed so that the virtual images are visible to a passenger (8) of a vehicle (2). The combiner (20) has a front reflection surface (21) in a concave curved surface form that reflects a display light image (4) on an indoor side thereby generating a front surface virtual image (4I), and a back reflection surface (22) in a convex curved surface form that reflects the display light image (4) on an outdoor side thereby generating a back surface virtual image (4I'). Respective optical axes (Xf, Xb) that extend from the front reflection surface (21) and the back reflection surface (22) toward an assumed eye point (9a) of the passenger (8) overlap each other, and the front reflection surface (21) has a radius of curvature (R) smaller than a radius of curvature (R') of the back reflection surface (22). |
