Patent ID: 8284397
Filing Date: 2012-10-09
Classification: G01J

Abstract:
1. An inclined-slit spectrograph comprising: a light source suitable for emitting a light beam, an inlet slit having a rectangular shape suitable for transmitting a part of the light beam emitted by the light source and generating a transmitted light beam, the inlet slit being inclined and rotated relative to an axis perpendicular to the plane of the slit; a grating having lines perpendicular to a meridian plane of the spectrograph, and being suitable for diffracting the light beam transmitted through the inlet slit and generating a diffracted light beam and a spectrum in an image plane; a detector suitable for detecting the light beam diffracted by the grating, the detector including a window through which the light beam diffracted by the grating is transmitted, wherein a part of the diffracted light beam generates reflections on the window or between the window and a sensitive surface of the detector contained in a detection plane; wherein the grating is positioned such that an image plane of the diffracted spectrum is inclined with respect to a detection plane of the detector.