Imaging spectrometer/camera having convex grating

An imaging spectrometer comprising:

• fore-optics for forming an image at an imaging location;
• and
• a spectral resolving system comprising:
• an entrance slit for receiving said image;
• a convex diffraction grating for separating said image into a plurality of spectra of predetermined wavelength ranges;
• a spectrometer array for detecting said spectra;
• and
• at least one concave asymmetric mirror substantially concentric with the diffraction grating for relaying said image from the entrance slit to the diffraction grating and from the diffraction grating to the spectrometer array;

A combined imaging spectrometer and camera comprising:

• fore-optics for forming an image at an imaging location;
• a spectral resolving system comprising:
• an entrance slit for receiving said image;
• a convex diffraction grating for separating said image into a plurality of spectra of predetermined wavelength ranges;
• a spectrometer array for detecting said spectra;
• at least one concave mirror substantially concentric with the diffraction grating for relaying said image from the entrance slit to the diffraction grating and from the diffraction grating to the spectrometer array;
• and a full spectrum imaging camera array disposed adjacent
• said entrance slit for recording said image.

A spectral resolving system comprising:

• an entrance slit for receiving an image;
• a convex diffraction grating for separating said image into a plurality of spectra of predetermined wavelength ranges;
• a spectrometer array for detecting said spectra;
• and
• at least one concave mirror substantailly concentric with the diffraction grating but tilted with respect to it, for relaying said image from the entrance slit to the diffraction grating and from the diffraction grating to the spectrometer array.

An imaging spectrometer comprising:

• fore-optics for forming an image at an imaging location;
• and po1 a spectral resolving system comprising:
• an entrance slit for receiving said image;
• a convex diffraction grating for separating said image into a plurality of spectra of predetermined wavelength ranges;
• a spectrometer array for detecting said spectra;
• and
• at least one concave mirror substantially concentric with the diffraction grating and tilted with respect to it, for relaying said image from the entrance slit to the diffraction grating and from the diffraction grating to the spectrometer array.