Optical: systems and elements – Single channel simultaneously to or from plural channels – By partial reflection at beam splitting or combining surface
Patent
1997-07-18
1999-11-16
Epps, Georgia
Optical: systems and elements
Single channel simultaneously to or from plural channels
By partial reflection at beam splitting or combining surface
359633, 359631, G02B 2714
Patent
active
059868120
ABSTRACT:
A head-mounted image display apparatus capable of providing an observation image which is clear and has minimal distortion even at a wide field angle. Display light from an image display device (7) enters an optical system (8) through a first surface (3) serving as both transmitting and reflecting surfaces. The incident light is reflected by a third surface (5) and further reflected by the first surface (3). Then, the reflected light is reflected by a second surface 4 which is a decentered reflecting surface disposed on an optical axis (2) to face an exit pupil (1). The reflected light exits from the optical system (8) through the first surface (3), travels along the optical axis (2) and enters an observer's pupil placed at the exit pupil (1), without forming an intermediate image, thus forming a display image on the retina of the observer's eye. The first to third surfaces (3 to 5) are each formed from a plane-symmetry three-dimensional surface having no axis of rotational symmetry in nor out of the surface and having only one plane of symmetry.
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Epps Georgia
Mack Ricky
Olympus Optical Co,. Ltd.
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