Four mirror afocal wide field of view optical system

Details Four mirror afocal wide field of view optical system Four mirror afocal wide field of view optical system

1986-05-05

1989-02-14

Punter, William H.

G02B 1706, G02B 2306

Patent

active

048042587

ABSTRACT:
A four mirror afocal optical system is disclosed. The primary mirror (12), secondary mirror (14), tertiary mirror (16), and quaternary mirror (18) form an afocal reimaging optical system which is off axis in both aperture and field angle. The secondary, tertiary and quaternary mirrors are tilted and decentered relative to the optical axis of the primary mirror to enhance image quality and to provide access to a real exit pupil.

REFERENCES:
patent: 4226501 (1980-10-01), Shafer
patent: 4265510 (1981-05-01), Cook
Gelles, R., "Unobscured Aperture Stigmatic Telescopes", Optical Engineering, 11/12-1974, pp. 534-538.
Korsch, D., "Design and Optimization Technique for Three-Mirror Telescopes", App. Optics, 11-1-80, pp. 3640-3645.

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