Patent ID: 7518722

Claim:
A multi-spectrum spectrometer, comprising: a first light entry device operative to admit light corresponding to a first input channel; a second light entry device operative to admit light corresponding to a second input channel; a light dispersion element; a first light focusing element operative to reflect and to focus the light admitted by the first light entry device and the light admitted by the second light entry device onto the light dispersion element, the light dispersion element being operative to disperse the light reflected and focused thereon by the first light focusing element; an imaging plane; and a second light focusing element operative to reflect and to focus the light dispersed by the light dispersion element onto the imaging plane, thereby producing a first spectrum and a second spectrum on the imaging plane, the first spectrum corresponding to the light admitted by the first light entry device, and the second spectrum corresponding to the light admitted by the second light entry device, wherein the first light entry device and the second light entry device are horizontally displaced with respect to each other to cause the light admitted by first light entry device to be reflected onto the light dispersion element at a first angle of incidence, and to cause the light admitted by the second light entry device to be reflected onto the light dispersion element at a second angle of incidence, the second angle of incidence being different from the first angle of incidence, and wherein the first light entry device and the second light entry device are vertically displaced with respect to each other so that at least a portion of the first spectrum produced on the imaging plane is vertically displaced with respect to at least a portion of the second spectrum produced on the imaging plane.