Echelle spectrometer
AssigneePerkinElmer Health Sciences, Inc.
InventorDavid M. Aikens
Life of this patent
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Abstract
Spectrometers include an optical assembly with optical elements arranged to receive light from a light source and direct the light along a light path to a multi-element detector, dispersing light of different wavelengths to different spatial locations on the multi-element detector. The optical assembly includes: (i) a collimator arranged in the light path to receive the light from the light source, the collimator including a mirror having a freeform surface; (2) a dispersive sub-assembly including an echelle grating, the dispersive sub-assembly being arranged in the light path to receive light from the collimator; and (3) a Schmidt telescope arranged in the light path to receive light from the dispersive sub-assembly and focus the light to a field, the multi-element detector being arranged at the field.
Claims21
A spectrometer, comprising:
- an optical assembly comprising a plurality of optical elements arranged to receive light from a light source and direct the light along a light path to a multi-element detector, dispersing light of different wavelengths to different spatial locations on the multi-element detector, the optical assembly comprising:
- a collimator arranged in the light path to receive the light from the light source, the collimator comprising a mirror having a freeform surface;
- a dispersive sub-assembly comprising an echelle grating, the dispersive sub-assembly being arranged in the light path to receive light from the collimator;
- and
- a Schmidt telescope arranged in the light path to receive light from the dispersive sub-assembly and focus the light to a field, the multi-element detector being arranged at the field.
Dependencies are inferred from the claim text.