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Copyright © LightForm Inc, 2017
LightForm Inc: Pioneering Analytical Hyperspectral Microscopy Since 1996
Schematic for a non-imaging spectrometer Schematic for an imaging spectrometer with point-to-point imaging
Non-Imaging wavelength dispersive spectrometers present a point in the field of view (FOV) as a line on the detector.  Detector type: PMT, Linear Diode linear Array or any detector that does not present spatial information
Wavelength dispersive Imaging spectrometers present a point in the field-of-view as a point on the detector. Detector type: Matrix array detectors such as a CCD, CMOS,  A camera presents spectral information along a rows of pixels, and spatial information along columns of pixels.
Imaging spectrometers are essential for applications including Spectral and Hyperspectral Imaging  where the spatial origin of an object presenting a spectrum is the secret of success 

The Difference Between An Imaging And Non-Imaging Spectrometer Is Its

Ability To Image A Point In The Field-of-View As A Point On The Detector

Non-imaging spectrometer
Imaging spectrometer
All wavelength dispersive spectrometers image an entrance slit onto a detector as a function of wavelength. If the entrance slit can be spatially segmented at the detector then the spectrometer is capable of imaging.
Prism or diffraction grating. Non-imaging spectrometers use spherical mirrors for focusing
Prism or diffraction grating. The PARISS Prism imaging spectrometers uses a prism with curved sides to correct aberrations and enable imaging
PARISS Imaging Spectrometer PARISS Imaging Spectrometer
LightForm_Logo
Copyright © LightForm Inc, 2017
LightForm Inc: Pioneering Analytical Hyperspectral Microscopy Since 1996
Schematic for a non-imaging spectrometer Schematic for an imaging spectrometer with point-to-point imaging
Non-Imaging wavelength dispersive spectrometers present a point in the field of view (FOV) as a line on the detector.  Detector type: PMT, Linear Diode linear Array or any detector that does not present spatial information
Wavelength dispersive Imaging spectrometers present a point in the field-of-view as a point on the detector. Detector type: Matrix array detectors such as a CCD, CMOS,  A camera presents spectral information along a rows of pixels, and spatial information along columns of pixels.
Imaging spectrometers are essential for applications  including Spectral and Hyperspectral Imaging where the  spatial origin of an object presenting a spectrum is the  secret of success 
The Difference Between An Imaging and Non-Imaging Spectrometer Is Its Ability to Image a Point in the Field-of-View as a Point on the Detector
Non-imaging spectrometer
Imaging spectrometer
All wavelength dispersive spectrometers image an entrance slit onto a detector as a function of wavelength. If the entrance slit can be spatially segmented at the detector then the spectrometer is capable of imaging.
Prism or diffraction grating. Non-imaging spectrometers use spherical mirrors for focusing
Prism or diffraction grating. The PARISS Prism imaging spectrometers uses a prism with curved sides to correct aberrations and enable imaging
PARISS Imaging Spectrometer PARISS Imaging Spectrometer