Optical: systems and elements – Single channel simultaneously to or from plural channels – By partial reflection at beam splitting or combining surface
Patent
1993-04-23
1997-01-14
Epps, Georgia Y.
Optical: systems and elements
Single channel simultaneously to or from plural channels
By partial reflection at beam splitting or combining surface
359728, G02B 2714
Patent
active
055945880
ABSTRACT:
A portable visual display which enables observation of an image with minimal distortion includes a two-dimensional display device (7) for displaying an image for observation, and an ocular optical system (6) for projecting an image formed by the two-dimensional display device (7) or a real image thereof in the air as a magnified image and for deviating the optical axis. The ocular optical system (6) is comprised of a concave aspherical mirror. The concave mirror (6) is designed so that the curvature thereof in a direction (X direction) perpendicular to a plane (Y-Z plane) in which the optical axis conventionally increasingly deviates gradually increases in a direction (-Y direction) in which the optical axis is deviated as seen from the observer's eye (1). Alternatively, the arrangement may be such that a relay optical system for projecting a real image of the image formed by the two-dimensional image display device (7) in the air is provided, and a part or the whole of the relay optical system is disposed so that the optical axis thereof is inclined toward a direction normal to the object surface away from a straight line connecting the object center and the image center.
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Epps Georgia Y.
Olympus Optical Co,. Ltd.
Robbins Thomas
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