| 摘要 |
PROBLEM TO BE SOLVED: To provide a display device which is excellent in the reproducibility of colors of display images. SOLUTION: The display device has a projector which radiates signal light 31 including a prescribed image information, a mirror 61 which is arranged in front of a viewer 81 and a hologram screen 15 of a transmission type which diffracts the signal light 31 radiated from the projector and diffuses the signal light to a central angle different from an incident angle. The hologram screen 15 and the projector are arranged in front of or behind the half mirror such that the viewer 81 can visually recognizes the prescribed image. The display device is provided with rear light shielding means for preventing the admission of the external light from the side of the half mirror opposite to the hologram screen.
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