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US 11,959,801 B2Granted
Hyperspectral imaging systems
OwnerJames F. Coward, David Alan Pechner +2inventors
InventorsJames F. Coward, David Alan Pechner, Gregory Mitchell, Ji Li
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Abstract
Shortwave infrared (SWIR) hyperspectral imaging (HSI) systems comprise a supercontinuum laser source configured to illuminate objects and a receiver comprising a spectrometer configured to receive light reflected from the objects. In some cases, hyperspectral images can be created by raster scanning of the source/receiver across a scene. The supercontinuum laser source provides active illumination to allow collection of hyperspectral imagery during day (including overcast conditions) and night.
Claims17
A hyperspectral imaging system comprising:
- a supercontinuum laser source;
- at least one lens or mirror configured to propagate light output from the supercontinuum laser source along a transmit path towards one or more objects in a scene;
- and
- a spectrometer configured to receive light from the one or more objects in the scene,
- said hyperspectral imaging system configured to generate a spectral image based on light received from said spectrometer,
- wherein said supercontinuum laser has an output having a spot size that is elliptical at a distance between about 1 km and about 20 km from the hyperspectral imaging system, and
- wherein a lateral dimension of a major axis of the elliptical spot size is less than or equal to 10 times a lateral dimension of a minor axis of the elliptical spot size at a distance between about 1 km and about 20 km from the hyperspectral imaging system.
4 more elements
Dependencies are inferred from the claim text.