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US 4,729,658 AGranted
Very wide spectral coverage grating spectrometer
AssigneeThe Perkin-Elmer Corporation
InventorSherman K. Poultney
Life of this patent
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Abstract
A very wide spectral coverage grating spectrometer which gathers light from a scene being viewed and collimates that light. A mosaic grating is disposed in collimated space which disperses the collimated light. The dispersed light is focused onto a detector array.
Claims19
A very wide spectral coverage grating spectrometer which comprises:
- light gathering means to gather light from a scene being viewed;
- collimating means to collimate the light from a scene being viewed;
- a two dimensional substantially continuous mosaic grating array, disposed in collimated space, having a plurality of grating elements in each of the two dimensions, said plurality of grating elements being comprised of at least two different grating rulings;
- a plurality of substantially continuous detector arrays disposed substantially on a single focal plane;
- and
- focusing means to focus light diffracted from said mosaic grating onto said single focal plane.
3 more elements
A wide spectral band grating spectrometer comprising:
- means for gathering light from a scene;
- a two dimensional mosaic grating array, placed in the path of the light from the scene, formed by a plurality of grating elements in each of the two dimensions, and having at least two independently oriented grating elements with different diffraction characteristics than said plurality of grating elements;
- first detector means for detecting the diffracted light from said plurality of grating elements;
- and
- second detector means for detecting the diffracted light from said at least two independently oriented grating elements.
2 more elements
Dependencies are inferred from the claim text.