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US 4,812,030 AGranted
Catoptric zoom optical device
AssigneeThe Boeing Company
InventorGeorge T. Pinson
Life of this patent
Estimating the term…
Abstract
A catoptric zoom optical device comprising a plurality of axially-spaced reflectors disposed in a set for receiving and reflecting energy from an object in the ultraviolet through infrared spectrum to generate a real image of the object and support and drive apparatus for selectively varying the effective focal length of the reflector set to magnify the image and for selectively varying the axial distance between the reflector set and a detector of the image for focusing the image on the detector.
Claims14
A catoptric zoom optical device comprising:
- reflector set means for transforming received object energy into a real image of said object, said set, means including a plurality of axially-spaced fixed focal length reflectors for receiving and reflecting said energy;
- magnifying means for selectively varying the focal length of said reflector set means;
- and
- focusing means for selectively varying the axial distance between said reflector set means and a detector for said image.
1 more element
A catoptric zoom optical device comprising:
- a casing having an optical axis extending between axially opposed inlet and outlet openings;
- a plurality of axially-spaced fixed focal length reflective surfaces coaxially disposed in said casing for receiving object energy through said inlet opening and for reflecting a real image of said object through said outlet opening;
- means in said casing for axially moving each said reflective surface;
- means controlling said moving means for selectively changing the axial spacing between said reflective surfaces to generate selectively variable magnification of said image;
- and
- means controlling said moving means for selectively axially displacing said reflective surfaces in fixed relative relation to focus said image proximate said outlet opening.
3 more elements
Dependencies are inferred from the claim text.