Patent ID: 7322702
Filing Date: 2008-01-29
Classification: G03B

Abstract:
1. A projecting display apparatus comprising: an illuminating optical system that converts light from a light source into illuminating light, an image display panel comprising a display surface that modulates the illuminating light to image light, a total reflection prism that guides the illuminating light incident thereon to the image display panel, the total reflection prism having a reflecting face that totally reflects the image light and a light emitting face that transmits the illuminating light and the image light; a first reflecting member that guides the illuminating light to the total reflection prism by bending a progressing path of the illuminating light emitted from the illuminating optical system, the first reflecting member being disposed between the illuminating optical system and the total reflection prism; and a projecting optical system that focuses the image light emitted from the total reflection prism to a screen, an optical axis of the projecting optical system having a direction perpendicular to an optical axis of the illuminating optical system, wherein the image display panel is provided to be (1) inclined to a first angle measured from a reference surface of the display surface relative to an optical system reference plane, said plane being parallel to the respective optical axes of the illuminating optical system and the projecting optical system, and (2) rotated about a central axis normal to the display surface of the image display panel such that a reference side of the display surface extends at a second angle to a reference side of the light transmitting face, and (3) the second angle is equal to the first angle.