Prism optical system

Details Prism optical system Prism optical system

1997-08-26

1999-12-28

Epps, Georgia

Optical: systems and elements

Single channel simultaneously to or from plural channels

By partial reflection at beam splitting or combining surface

359631, 359633, G02B 2714

Patent

active

060089482

ABSTRACT:
The invention provides a prism optical system which has an image-forming action and provides a clear yet substantially undistorted image at a wide field angle. In a prism optical system 5 comprising an aperture 1 and having an action on erecting an image formed by an objective, there are provided reflecting surfaces 31, 32, 33, 41, 42, and 43 for image inversion, each of which is constructed of a curved surface having a power, and is in an irrotationally symmetric plane shape having no rotationally symmetric axis both within and outside the surface, so that decentering aberration produced by reflection of light at the curved surfaces can be corrected.

REFERENCES:
patent: 3810221 (1974-05-01), Plummer
patent: 3836931 (1974-09-01), Plummer
patent: 5274406 (1993-12-01), Tejima et al.
patent: 5663833 (1997-09-01), Nanba et al.
Sidney F. Ray, Photographic Optics, pp. 55 and 434-435, 1988.

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