Patent ID: 7382498

Claim:
A two-channel spectrometer comprising: a first slit that receives a first portion of an incident beam and transmits a first slit output beam of a first wavelength of light; a second slit that receives a second portion of the incident beam and transmits a second slit output beam of a second wavelength of light, and wherein the first slit and the second slit are located at a common image plane; a shared double-pass all-reflective optical form that receives the first slit output beam and the second slit output beam, and has a reflective optical form output comprising a collimated output of the first wavelength and a collimated output of the second wavelength; a first dispersive element that receives the collimated output of the first wavelength and produces a first dispersed output, wherein the first dispersive element is oriented to direct the first dispersed output through the shared double-pass reflective optical form to be incident upon a first location of the common image plane; a second dispersive element that receives the collimated output of the second wavelength and produces a second dispersed output, wherein the second dispersive element is oriented to direct the second dispersed output through the shared double-pass reflective optical form to be incident upon a second location of the common image plane; a first imaging detector at the first location of the common image plane; and a second imaging detector at the second location of the common image plane.