Imaging spectrometer and camera with high spectral range

An imaging spectrometer camera adapted to receive incident light from a medical scope, comprising:

• an optical channel receiving and focusing incident light;
• and
• an imaging spectrometer positioned downstream from the optical channel and comprising:
• a scanning system for adjusting a relative position of the imaging spectrometer with respect to the optical channel;
• a prism that refracts incident light in at least a spectral range for spectrographic analysis with a shortest wavelength (λS) and a longest wavelength (λL);
• a diffraction grating, positioned in optical alignment with the prism, that diffracts the incident light, wherein the refraction from the prism and the diffraction from the diffraction grating for a set of diffraction orders used for the spectrographic analysis both increase a deflection angle of the incident light from an original optical axis;
• and
• a focal plane array sensor positioned downstream from the prism and diffraction grating which detects the second order diffraction for wavelengths between λS and a selected wavelength (λC) in the spectral range and the first order diffraction for wavelengths between λC and λL simultaneously along one spatial axis,
• wherein the spectral range spans greater than an octave such that λL>2λS, and wherein the combined refraction and diffraction of the prism and the diffraction grating are such that a second diffracted order of λS does not spatially overlap with a first diffracted order of any wavelengths shorter than λL at the focal plane array sensor.