Patent ID: 6744573
Filing Date: 2004-06-01
Classification: G02B

Abstract:
An optical element for enlarging an image displayed on a small image display element, comprising:a first optical surface for capturing the image, the first optical surface approximately facing a display surface of the image display element; a second optical surface for reflecting light beams incident from the first optical surface inside of the optical element and for causing the light beams of an enlarged image to proceed to the eye balls of an observer; at least one reflection optical surface that serves to cause at least one internal reflection, so that the light beams incident from the first optical surface reach the second optical surface; side surfaces that do not produce an optical action, said optical element comprising optically effective portions and optically ineffective portions; and element fixing mounting portions disposed to any of the first to second optical surfaces and the reflection optical surface physically coupled to locations that are within said optically ineffective portion.