Optical: systems and elements – Single channel simultaneously to or from plural channels – By partial reflection at beam splitting or combining surface
Patent
1997-02-25
2000-03-07
Shafer, Ricky D.
Optical: systems and elements
Single channel simultaneously to or from plural channels
By partial reflection at beam splitting or combining surface
359631, 359633, 359834, G02B 2714, G02B 504
Patent
active
060348232
ABSTRACT:
A decentered prism optical system has a first surface at a side thereof closer to a pupil. The first surface has a transmitting or reflecting action and also has a wide effective area. The first surface is formed from a rotationally symmetric spherical or aspherical surface. The optical system has at least three surfaces (3, 4 and 5), and the space between these surfaces (3 to 5) is filled with a transparent medium having a refractive index larger than 1.3. A bundle of light rays from an object first passes through a pupil (1) of the optical system (7) along an optical axis (2) and enters the optical system (7) through a first surface (3) having both transmitting and reflecting actions. The incident light rays are reflected toward the pupil (1) by a second surface (4) which is at a side of the optical system (7) remote from the pupil (1) and which has only a reflecting action. The reflected light rays are then reflected away from the pupil (1) by the first surface (3). The reflected light rays pass through a third surface (5) having only a transmitting action, and reach an image plane (6) to form an image thereon. The first surface (3) is a rotationally symmetric surface, e.g. a spherical surface, and the second surface (4) is a rotationally asymmetric surface.
REFERENCES:
patent: 4322135 (1982-03-01), Freeman
patent: 4563061 (1986-01-01), Ellis
patent: 4775217 (1988-10-01), Ellis
patent: 4874214 (1989-10-01), Cheysson et al.
patent: 4948558 (1990-08-01), Skinner et al.
patent: 5019338 (1991-05-01), Oishi et al.
patent: 5459612 (1995-10-01), Ingleton
patent: 5689736 (1997-11-01), Okuyama et al.
patent: 5699194 (1997-12-01), Takahashi
patent: 5701202 (1997-12-01), Takahashi
patent: 5703605 (1997-12-01), Takahashi et al.
patent: 5706136 (1998-01-01), Okuyama et al.
patent: 5751494 (1998-05-01), Takahashi
patent: 5768025 (1998-06-01), Togino et al.
patent: 5815326 (1998-09-01), Takahashi
patent: 5875056 (1999-02-01), Takahashi
Olympus Optical Co,. Ltd.
Shafer Ricky D.
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