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US 5,260,767 AGranted
Compact all-reflective imaging spectrometer
AssigneeHughes Aircraft Company
InventorLacy G. Cook
Life of this patent
Estimating the term…
Abstract
An all-reflective imaging spectrometer (10) has a three-mirror anastigmat (12) acting as its objective and a reflective triplet (14) with a dispersive element (18) providing the spectrometer collimator and imager. The system is capable of imaging an object being viewed to provide a plurality of different wavelength images of that object.
Claims7
An imaging spectrometer comprising:
- an all-reflective objective means including a primary mirror defining an optical axis, a secondary mirror facing said primary mirror such that radiation from a viewed object is reflected by said secondary mirror, and an objective tertiary mirror positioned to receive radiation from said secondary mirror and to reflect said radiation;
- an all-reflective means for collimating and imaging said radiation received from said all-reflective objective means, said collimating and imaging means including a reflective triplet with a primary mirror for reflecting radiation received from said objective tertiary mirror, a secondary mirror reflecting radiation received from said primary mirror and a tertiary mirror reflecting radiation received from said secondary mirror;
- and
- dispersive means for receiving and reflecting said radiation from said reflective triplet tertiary mirror such that said radiation is collimated as it passes from said reflecting triplet tertiary mirror to said dispersive means which, in turn, reflects said radiation back through said reflective triplet wherein said radiation is focused on a viewing plane as a plurality of different wavelength images of the viewed object.
1 more element
Dependencies are inferred from the claim text.