Image displaying apparatus having plane mirror at conjugate to image displaying element

摘要

An image displaying apparatus including a light source, an image displaying element configured to control exiting of incident light to display an image, an illumination optical system configured to illuminate the image displaying element with light exiting from the light source, and a projection optical system configured to project an image displayed on a display surface of the image displaying element, to provide an enlarged display. The projection optical system includes a lens optical system, a first mirror configured to reflect light transmitted through the lens optical system, and a second mirror configured to reflect light reflected from the first mirror toward the surface to be projected onto, and one of the mirrors is arranged at a position conjugate to the image displaying element, and wherein an optical surface of the one mirror is arranged to face vertically downward.

主权项

1. An image displaying apparatus comprising:
a light source; an image displaying element configured to control exiting of incident light to display an image; an illumination optical system configured to illuminate the image displaying element with light exiting from the light source; and a projection optical system configured to project an image displayed on a display surface of the image displaying element onto a surface to be projected onto, to provide an enlarged display,
wherein the projection optical system includes a leas optical system, a first mirror configured to reflect light transmitted through the lens optical system, and a second mirror configured to reflect light reflected from the first mirror toward the surface to be projected onto,wherein one of the first mirror and the second mirror is arranged so that at least a part of an optical surface of said one of the first mirror and the second mirror is present at a position that is conjugate to the image displaying element,wherein the optical surface of the one mirror is arranged to face a vertically downward direction, and wherein light condensation of the light reflected from the second mirror towards the surface to be projected onto is at a position proximate to a contamination barrier and the first mirror.