Hyperspectral imaging systems and methods for imaging a remote object

摘要

A hyperspectral imaging system and a method are described herein for providing a hyperspectral image of an area of a remote object. In one aspect, the hyperspectral imaging system includes a fore optic with optics for acquiring and projecting an image from a remote object, a scannable slit mechanism with a plurality of slits for receiving the projected image, where the projected image simultaneously illuminates two or more of the plurality of slits, a spectrometer for receiving and dispersing images passing through the two or more simultaneously-illuminated slits, and a two-dimensional image sensor for recording images received from the spectrometer, where the images received from different slits are recorded on different sets of detection elements of the two-dimensional image sensor.

主权项

1. A hyperspectral imaging system comprising:
a fore optic configured to receive an image from a remote object, said image including a plurality of lines of light; and a scannable slit mechanism that includes a first slit and a second slit, said first slit and said second slit being positioned so that said fore optic projects said image to simultaneously illuminate said first slit and said second slit, said first slit receiving a first line of light from said fore optic and outputting a trimmed first line of light, said second slit receiving a second line of light from said fore optic and outputting a trimmed second line of light, said first line of light originating from a first portion of said remote object and said second line of light originating from a second portion of said remote object; and a spectrometer with dispersing device, said spectrometer positioned to receive and disperse said trimmed first line of light to produce a dispersed first line of light, said spectrometer positioned to receive and disperse said trimmed second line of light to produce a dispersed second line of light; and a two-dimensional image sensor with a plurality of detection elements, said two-dimensional image sensor positioned to receive said dispersed first line of light over a first set of said detection elements and to receive said dispersed second line of light over a second set of said detection elements, said two-dimensional image sensor configured to obtain a two-dimensional image of said dispersed first line of light and a two-dimensional image of said dispersed second line of light; and an actuator configured to reconfigure said scannable slit mechanism, said reconfiguration including repositioning said first slit and said second slit, said first slit and said second slit remaining continuously and simultaneously illuminated by said image during said repositioning, said repositioning situating said first slit to receive a third line of light from said fore optic and said second slit to receive a fourth line of light from said fore optic, said third line of light originating from a third portion of said remote object and said fourth line of light originating from a fourth portion of said remote object.