IMAGE DISPLAY UNIT

摘要

An image display unit provided with an image forming member for forming the image of a point light source onto the pupil of an observer as a means of projecting an image displayed on a transmission type image display plate, wherein it is possible to track the movement of an observer with a simple construction. A point light source array (12) formed in an array by dispersedly disposing many point light sources (120) in a plane direction is provided so as to allow a point light source (120) focused at a pupil position to move to an adjacent point light source (120) even if an observer moves. A ratio of the interval between adjoining point light sources (120) to the distance from the point light source array (12) to an image forming member (13) is set so as to be equal to a ratio of a human pupil diameter to the distance from the image forming member (13) to the image forming position of a point light source (120), whereby it is possible to prevent the possible occurrence of a visual recognition-disabled area with the visual recognition as superimposed images being avoided.