| 摘要 |
The present invention is a projection type image display apparatus comprising: an image display device which displays an image; an optical illumination means which irradiates the image display device, the optical illumination means having a light source unit; and a projection lens for projecting an enlarged image of the image display device; characterized in that an optical element is disposed between the image display device and the projection lens or within the projection lens and focusing is performed by moving the optical element in a direction which is substantially perpendicular to the optical axis of the projection lens.
|
