Back to results
US 8,786,853 B2Granted
Monochromator having a tunable grating
AssigneeCsem Centre Suisse D'Electronique Et De Microtechnique SA—Recherche Et DéVeloppement
InventorsMaurizio Tormen, Stanley Ross, Robert Lockhart
Life of this patent
Estimating the term…
Abstract
A spectrometer includes: an entrance aperture, a collimator, intended to produce, from a light source, a collimated input light (5), a plurality of gratings arranged in a 2-D matrix, a plurality of detectors, and an exit aperture.
Claims32
A spectrometer, comprising:
- an entrance aperture;
- a collimator intended to produce, from a light source, a collimated input light;
- a plurality of gratings;
- an exit aperture;
- and
- a plurality of detectors,
- wherein said gratings are tunable and arranged to form a 2D-matrix to diffract said collimated input light, each of said gratings producing a distinct collimated beam with a narrow band of wavelength and each single individual one of said detectors being associated with one corresponding single individual grating of said plurality of gratings and arranged to measure the intensity of said distinct collimated beam with a narrow band of wavelength produced by said grating.
4 more elements
A monochromator comprising:
- an entrance aperture;
- a collimator, intended to produce, from a light source, a collimated input light;
- a grating comprising a plurality of elongated beams placed on a substrate, said elongated beams being arranged parallel to each other along an axis x, the longitudinal axis of each of said beams being perpendicular to the axis x and the distances e between two consecutive beams in the direction of x being equal and tunable;
- an exit aperture;
- and
- a first mirror and a second mirror,
- wherein the top of each elongated beam comprises on a first longitudinal side, a first tilted reflective flat surface parallel to each first tilted surface of said elongated beams, and, on a second longitudinal side, a second tilted reflective flat surface, parallel to each second tilted surface of said elongated beams, and
- wherein said collimated input light is arranged to be parallel to a first plane, said first plane being oriented parallel to the longitudinal axis of each of said beams and perpendicular to the first tilted reflective flat surfaces,
- said collimated input light being diffracted by said grating into a first collimated beam with a narrow band of wavelength, and wherein said first mirror and second mirror, are arranged in order for said first collimated beam with a narrow band of wavelength to be parallel to a second plane after reflection on the second mirror,
- said second plane being parallel to the longitudinal axis of each of said beams and perpendicular to the second tilted reflective flat surfaces,
- said first collimated beam with a narrow band of wavelength being diffracted by said grating into a second collimated beam with a narrow band of wavelength, and
- wherein said detector is arranged to measure the intensity of the second collimated beam with a narrow band of wavelength produced by said grating.
9 more elements
Dependencies are inferred from the claim text.