| 摘要 |
<p>A projection display apparatus includes an image display element for displaying an image on a reduction side conjugate plane and a projection optical system for magnifying and projecting the image onto a screen which is a magnification side conjugate plane as a conjugate image. The projection optical system substantially consists of a dioptric system and a catoptrics system having a common axis. The center of a display surface of the image display element is disposed eccentrically with respect to the optical axis and, when a magnification side conjugate position of the center of the display surface is vertically above the optical axis, an intersection point between a lower light ray of a light flux focused on the bottom center of the conjugate image and an upper light ray of a light flux focused on the top center of the conjugate image falls within a predetermined range.</p> |
