| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a virtual image display device that suppresses an occurrence of luminance unevenness and enhances utilization efficiency of illuminating light. <P>SOLUTION: In a virtual image display device of one embodiment, an optical directivity changing section forms a non-uniform distribution with respect to directivity of image light GL emitted from an image display device. Accordingly, even when angles of light beams emitted from the image display device and effectively taken into eyes EY of an observer are greatly different from one another depending upon a position of the image display device, the image light GL that has the directivity in response to angular characteristics of such taking-in of the light beams can be formed, an occurrence of luminance unevenness can be suppressed and utilization efficiency of illuminating light can be enhanced. <P>COPYRIGHT: (C)2013,JPO&INPIT |
