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US 8,284,397 B2Granted
Inclined-slit spectrograph
AssigneeHoriba Jobin Yvon SAS
InventorsAlain Thevenon, Viviane Millet, Pierre-André Corde
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Abstract
An inclined-slit spectrograph includes a light source, an inlet slit, a grating and a detector including window through which the light beam diffracted by the grating is transmitted with part of the diffracted light beam generating reflections on the window or between the window and the sensitive surface of the detector. A rectangular inclined inlet slit compensates for spectral resolution losses.
Claims9
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.
2 more elements
Dependencies are inferred from the claim text.