Patent ID: 6490095
Filing Date: 2002-12-03
Classification: G02B,G02F

Abstract:
An image display apparatus comprising:a light source for supplying illumination light; a reflective display element for reflecting and modulating said illumination light into image light; a first optical system for guiding said illumination light to said reflective display element; and a second optical system for guiding said image light to an observer, wherein said first optical system has an optical element comprising a first surface on which said illumination light is incident, a second surface for totally reflecting the light incident on the first surface, and a third surface from which the light totally reflected by the second surface emerges toward said reflective display element, and said image light is again incident through said third surface on said optical element and emerges from said second surface toward said second optical system, and wherein said optical element has a function of preventing unnecessary light from being guided to the observer.