| 摘要 |
PURPOSE:To provide a display device which is small in sized and whose power consumption is small, by enlarging a video on a comparatively small-sized video device by a Fresnel type concave mirror and viewing a large virtual image formed in space. CONSTITUTION:This device is provided with the Fresnel type concave mirror 4 set on one main surface of a device main body 1 and a cover 2 set to cover the main surface of the main body 1 and provided with the video device 3 at the one part. By opening the cover 2, setting the device 3 at a proper position above the mirror 4 and viewing the video on the device 3 reflected by the mirror 4 from the proper position above the mirror 4, the enlarged virtual image 9 is viewed in the space. |
