1975-01-28
1977-02-08
Corbin, John K.
350211, 350292, 350294, G02B 510, G02B 308
Patent
active
040069710
ABSTRACT:
The subject invention provides a reflex camera having a novel means of image reflection for use in viewing an image, transmitted through an entrance pupil to said image reflection means, at an exit pupil remote from both said means and said entrance pupil.
Basically, the camera of the subject invention includes an essentially flat plate having a reflective surface. The reflective surface is so formed as to provide a plurality of ellipsoidal segments extending thereover. The ellipsoidal segments are provided with common foci, whereby any light passing through said entrance pupil and impinging on any of said ellipsoidal segments will be reflected from such segment to said exit pupil. Such reflection will be independent of the direction of the light from said entrance pupil and it should be noted that the subject invention will be free of aberrations such as astigmatism and coma.
REFERENCES:
patent: 3004470 (1961-10-01), Ruhle
patent: 3523721 (1970-08-01), Hofmann
Corbin John K.
Ericson John W.
Evans F. L.
Polaroid Corporation
Vale John S.
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