IMAGE DISPLAY DEVICE

摘要

An image display device (1) comprises an LD (2) for modulating and emitting visible light, a light scanning device (4) for two-dimensionally scanning the light from the LD (2) on a plane (P1) in synchronization with the LD (2), an image-capturing unit (5) for capturing an image (G1) displayed on the plane (P1), and an image processing unit (6) for judging the presence or absence of an indicating means such as a finger used for indicating any position on the image (G1) according to the temporal change of the image (G1) captured by the image-capturing unit (5). Even when a human finger or the like is used as the indicating means, the presence or absence of the indication of the image by the finger or the like can be judged. Thus, the number of parts can be reduced. As compared with an image display device for emitting invisible light and detecting the position of an indicating means according to the timing at which the invisible light reflected by the indicating means is received, a complicated detecting circuit with high temporal resolution and so on becomes unnecessary, the constitution can be simplified, and the manufacturing cost can be reduced.