Schiefspiegler telescope with three reflecting surfaces

Optical: systems and elements – Compound lens system – With curved reflective imaging element

Reexamination Certificate

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C359S399000, C359S856000

Reexamination Certificate

active

07602548

ABSTRACT:
A Schiefspiegler telescope with three reflecting surfaces, preferably for observing the earth from space, particularly for imaging radiometers. A novel possibility for realizing a reflector telescope without vignetting which permits a simple construction and a simple adjustment of the reflecting surfaces relative to one another. In a Schiefspiegler telescope with three reflecting surfaces whose mirror axes are arranged within a plane, the primary reflecting surface and tertiary reflecting surface are convex surfaces of identical shape arranged symmetrically with respect to an axis of symmetry. The secondary reflecting surface is arranged symmetric to the primary reflecting surface and tertiary reflecting surface so as to be rotationally symmetric around the axis of symmetry so that all three reflecting surfaces have an axially symmetric mirror arrangement with respect to design in which the optical imaging is transmitted to a receiver in the manner of an off-axis telescope.

REFERENCES:
patent: 3748015 (1973-07-01), Offner
patent: 3781552 (1973-12-01), Kadrmas
patent: 4097125 (1978-06-01), Suzuki
patent: 4733955 (1988-03-01), Cook
patent: 7319556 (2008-01-01), Ackermann et al.
patent: 196 49 841 (2001-03-01), None
patent: 102 45 559 (2004-04-01), None
patent: 0 019 447 (1980-11-01), None
patent: 0 656 552 (1995-06-01), None
patent: 2 332 533 (1999-06-01), None
patent: WO 02/50597 (2002-06-01), None
patent: 03/002485 (2003-01-01), None

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