| 摘要 |
PROBLEM TO BE SOLVED: To provide an automatic follow-up type screen which can constitute a video system even if a movement in visual field exists by detecting the movement of both eyes of a screen observer, can constitute a compact video system, is short in the time required for follow-up to the movement of both eyes, and is low in cost. SOLUTION: The screen 1 consisting of a microoptical element array arranging microoptical elements 2 has a means for detecting the movement of both eyes of the screen 1 observer and a means for automatically following up the microoptical elements 2 in an arbitrary direction according to the detected movement of both eyes.
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