| 摘要 |
PROBLEM TO BE SOLVED: To present a picture in which a specific point in a background and a scene is shown clearly regardless of distance of the background and the scene and moreover in accordance with observing positions of a wide range. SOLUTION: This spatial information presenting device is provided with a light source 1, a path setting means 2 setting the path of a light to be emitted from the light source, a half mirror 4 composing the light from the light source on the background and the scene by reflecting the light emitted from the light source and also by transmitting rays of light constituting the background and the scene, a specific point designating means 30 designating the specific point in the background and the scene and a control means 3 controlling the luminescent position and the path of the light emitted from the light source so that the path posterior to the reflection on the half mirror of the light emitted from the light source coincide with the path posterior to the transmission in the half mirror of rays of the light from the specific point by controlling the light source and the path setting means.
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