Hyperspectral Imaging Systems
First Claim
Patent Images
1. A hyperspectral imaging system, comprising:
- a focal plane array; and
a grating-free spectrometer for dividing a field of view into multiple channels as bars and for reimaging the multiple channels as multiple spectral signatures onto the focal plane array.
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Abstract
Hyperspectral imaging system and methods that may be used for imaging objects in three-dimensions are disclosed. A cylindrical lens array and/or a slit array may be used to re-image and divide a field of view into multiple channels. The multiple channels are dispersed into multiple spectral signatures and observed on a two-dimensional focal plane array in real time. The entire hyperspectral data cube is collected simultaneously.
90 Citations
24 Claims
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1. A hyperspectral imaging system, comprising:
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a focal plane array; and a grating-free spectrometer for dividing a field of view into multiple channels as bars and for reimaging the multiple channels as multiple spectral signatures onto the focal plane array. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A hyperspectral imaging system, comprising:
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imaging optics for forming an image of an object; a focal plane array; a cylindrical lens array for forming multiple images of a pupil of the imaging optics; and a prism coupled to the cylindrical lens array, for dispersing the multiple images as multiple spectral signatures onto the focal plane array.
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16. A multiwavelength imager, comprising:
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imaging optics for forming an image of an object; a focal plane array; and at least one micromachined optical (MMO) element array located at or near to an image plane of the imager, for providing a spectral signature for use with the focal plane array. - View Dependent Claims (17, 18)
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19. A hyperspectral imaging system, comprising:
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imaging optics for forming an image of an object; a focal plane array for detecting spectral signatures; a slit array between the focal plane array and the imaging optic, the slit array selecting parts of the image as bars; and a spectrometer for reimaging the bars as multiple spectral signatures onto the focal plane array; the imaging optics moveable to define which parts of the image are fed as bars into the spectrometer. - View Dependent Claims (20, 21)
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22. A method for forming a dense hyperspectral data cube from a plurality of images, comprising:
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sequentially capturing the plurality of images over a period; sampling each of the plurality of images into multiple channels, each channel focused into a bar; dispersing each bar to form a plurality of spectral signatures; capturing the spectral signatures using a focal plane array; converting the captured spectral signatures into a hyperspectral data cube. - View Dependent Claims (23, 24)
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Specification