Catoptric lens arrangement

Details Catoptric lens arrangement Catoptric lens arrangement

1972-04-17

1976-09-28

Rolinec, R. V.

350293, 350299, G02B 510

Patent

active

039828247

ABSTRACT:
Different species of catoptric lens arrangements are shown, each one of the disclosed species being characterized by use of a quadratic conic mirror having real or virtual focal points displaced from a lens axis. With a quadratic conic mirror having such a characteristic, the image points of axial, or paraxial, rays are similarly displaced so that aperture blockage may be eliminated and achromatic aberrations may be reduced to such an extent as to make the lens arrangement diffraction limited.

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patent: 2741691 (1956-04-01), Lee
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patent: 3367607 (1968-02-01), Bowen
patent: 3367607 (1968-02-01), Bowen
patent: 3453425 (1969-07-01), Whitaker
patent: 3455623 (1969-07-01), Harris
patent: 3492474 (1970-01-01), Yamaguchi et al.
patent: 3774995 (1973-11-01), Perret

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