All-reflective relayed focal telescope derived from the first two mirrors of an afocal three-mirror anastigmat
AssigneeRaytheon Company
InventorLacy G. Cook
Life of this patent
Estimating the term…
Abstract
An optical system includes a primary mirror of a positive-powered concave substantially paraboloidal configuration configured to reflect light incident thereupon; a secondary mirror of a negative-powered convex hyperboloidal configuration facing the primary mirror configured to receive the light reflected from the primary mirror and redirect the light reflected from the primary mirror; a positive-powered tertiary mirror configured to substantially reimage and reflect divergent light rays incident from the secondary mirror; and a powered quaternary mirror configured to receive the reimaged light rays from the tertiary mirror, and to relay the received reimaged light rays to a focal point.
Claims17
An optical system, comprising:
- a primary mirror of a positive-powered concave substantially paraboloidal configuration configured to reflect light incident thereupon;
- a secondary mirror of a negative-powered convex hyperboloidal configuration facing the primary mirror configured to receive the light reflected from the primary mirror and redirect the light reflected from the primary mirror;
- a positive-powered tertiary mirror configured to substantially reimage and reflect divergent light rays incident from the secondary mirror;
- and
- a quaternary mirror configured to receive the reimaged light rays from the tertiary mirror, and to relay the received reimaged light rays to a focal point of the optical system to produce a focal point image.
A method comprising:
- reflecting, using a primary mirror of a concave substantially paraboloidal configuration, light rays incident thereon;
- reflecting, using a secondary minor of a convex hyperboloidal configuration facing the primary mirror, the light rays received from the primary mirror;
- substantially reimaging and reflecting, using a positive-powered tertiary mirror, divergent light rays incident from the secondary mirror;
- and
- reflecting and focusing, using a powered quaternary minor, the reimaged light rays incident from the tertiary mirror to a focal point to form a focal point image.
A method of producing a focal optical telescope comprising:
- providing a primary minor of a concave substantially paraboloidal configuration for reflecting light rays incident thereon;
- providing a secondary mirror of a convex hyperboloidal configuration for reflecting the light rays received from the primary minor;
- providing a positive-powered tertiary mirror for substantially reimaging and reflecting divergent light rays incident from the secondary mirror;
- and
- providing a powered quaternary minor for reflecting and focusing the reimaged light rays incident from the tertiary mirror to a focal point of the focal optical telescope.
Dependencies are inferred from the claim text.