Patent ID: 6208413
Filing Date: 2001-03-27
Classification: G01J

Abstract:
A Hadamard spectrometer comprising:a luminating unit, having a row of n luminous sources controllable according to the Hadanard-principle wherein n is greater than or equal to three, said luminous sources being separate from and adjacent one another,an imaging grating arranged to receive light from a direction of said luminous sources,a detecting unit including a detector row of detecting elements, said detecting elements being separate from one another and arranged at a distance a from one another, said detecting unit being arranged to receive light beams from said imaging grating,a receptacle for receiving samples to be spectrally analyzed interposed between said luminating unit and said imaging grating, andelectronic units coupled to said ruminating unit and said detecting unit for performing a Hadamard-transformation and for signal detection and signal evaluation,said luminous sources being arranged relative to one another such that an edge of each of said luminous sources is spaced a distance b from the corresponding edge of adjacent ones of said luminous sources, the distance b being set so that, when imaged upon said detector row, the distance b amounts to an integral multiple of a plus a/n or minus a/n.