| 摘要 |
PROBLEM TO BE SOLVED: To provide a display device which can change display contents of the image of an object to be formed and displayed by a pair of parabolic mirrors. SOLUTION: On this display device, a pair of a 1st and a 2nd parabolic mirrors 21, 23 are arranged to oppose each other so that mutual optical axes are matched with each other, and an image 35 of an object 25 is displayed by reflecting the light 33 from the object located at the focal position of the 1st parabolic mirror 21 between both parabolic mirrors 21, 23, focusing the light at an image-forming position in the neighborhood of the focal position of the 2nd parabolic mirror 23, and thus, image-forming the image of the object at the image-forming position. And, when the image 35 is visually recognized from a predetermined direction for visual recognition, the object 25 is driven to rotate about a predetermined axis by a motor 29 with a turntable so that a part of the object 25 visually recognized as the image 35 changes successively.
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