Ring telescope system

Details Ring telescope system Ring telescope system

2002-06-21

2004-04-27

Sikder, Mohammad (Department: 2872)

Optical: systems and elements

Mirror

Plural mirrors or reflecting surfaces

C359S858000, C359S399000

Reexamination Certificate

active

06726339

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to telescopes, and more particularly relates to telescopes employing an array of sensors, e.g., in a ring configuration.
BACKGROUND OF THE INVENTION
Applicant's prior inventive work in the field sought to reduce the cost of achieving diffraction limited imaging performance through turbulent atmospheres on very large ground based telescopes. Some of those approaches were loosely based on work published by Primot in 1989, known as “deconvolution from wavefront sensing”—an advance on speckle imaging methods. Applicant's work, in part, extended those methods to include very wide fields of view, set within the context of strong anisoplanatism (the point spread function changing rapidly as a function of field angle). The designs and computer simulations were validated at that time, further independent work in the field has generally validated the overall approach, and applicant's work led to, among other things, U.S. Pat. Nos. 5,412,200, 5,448,053, 6,028,300 and 6,084,227.
The present work expands on the foundation set by the earlier work.


REFERENCES:
patent: 4424802 (1984-01-01), Winders
patent: 4981354 (1991-01-01), DeHainaut et al.
patent: 5108168 (1992-04-01), Norbert. Massie A. et al.
patent: 5120128 (1992-06-01), Ulich et al.
patent: 5229889 (1993-07-01), Kittell
patent: 5730117 (1998-03-01), Berger
patent: 5905591 (1999-05-01), Duncan et al.
patent: 6084227 (2000-07-01), Rhoads

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