Patent ID: 9086317
Filing Date: 2015-07-21
Classification: G01J,G02B

Abstract:
1. A hyperspectral imaging system comprising: at least one slit element for providing a line image; an optical sub-system having at least one refractive element; said optical sub-system substantially collimating, at a back plane, electromagnetic radiation emanating from said at least one slit element; at least one reflective dispersive element located substantially at the back plane; said optical sub-system also imaging, at an image plane, electromagnetic radiation reflected from said at least one reflective dispersive element; and at least one detecting element located substantially at the image plane; said at least one detecting element detecting dispersed electromagnetic radiation reflected from said at least one reflective dispersive element; said dispersed electromagnetic radiation forming a two-dimensional image substantially on said at least one detecting element, such that the line image of the slit element is substantially oriented in a spectral first dimension and the direction of said dispersed electromagnetic radiation is substantially oriented in a dispersed second dimension; and said at least one refractive element being comprised of materials with sufficiently high refractive index to reduce Petzval curvature of said optical sub-system; said sufficiently high refractive index being at least 2.