Optical: systems and elements – Single channel simultaneously to or from plural channels – By partial reflection at beam splitting or combining surface
Patent
1996-08-20
1998-06-16
Epps, Georgia Y.
Optical: systems and elements
Single channel simultaneously to or from plural channels
By partial reflection at beam splitting or combining surface
359630, 359637, G02B 2714
Patent
active
057680256
ABSTRACT:
An optical system which is compact, lightweight and satisfactorily corrected for aberrations and may be suitably used as an imaging optical system or an ocular optical system for a head- or face-mounted image display apparatus which forms no intermediate image. The optical system includes an optical member (7) and a diffraction optical element (8), which are decentered with respect to each other. The optical member (7) has at least three adjacent optical surfaces, at least one of which is a curved surface. At least two reflections take place between the optical surfaces. The space between the optical surfaces is filled with a medium having a refractive index larger than 1. Light rays emitted from an image display device (6) enter the optical member (7) through a first transmitting surface (5) disposed to face the image display device (6) and are reflected by a first reflecting surface (3). The reflected light rays are reflected by a second reflecting surface (4) and led to an observer's eyeball through a second transmitting surface (3).
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patent: 5619377 (1997-04-01), Rallison
Nakaoka Masaya
Togino Takayoshi
Epps Georgia Y.
Mack Ricky
Olympus Optical Co,. Ltd.
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