Apparatus and method providing a hand-held spectrometer
First Claim
1. An IR spectrometer comprising:
- a light source configured to illuminate a sample with light;
a grating configured to spectrally disperse the light that has illuminated the sample to provide a dispersed light;
a controller;
a MEMS array configured to be actuated to control a diffraction of the dispersed light to provide a plurality of wavelengths of light, the MEMS array comprising a plurality of individually controllable diffractive elements;
a switched voltage array responsive to the controller and coupled to the MEMS array, the switched voltage array comprising a plurality of switched voltage sources configured to selectively turn the individually controllable diffractive elements of the MEMS array optically-on and optically-off responsive to the controller to diffract the plurality of wavelengths of light according to a hadamard matrix; and
a detector configured to detect the plurality of wavelengths of light;
wherein the controller includes a power management system adapted to control the MEMS array to manage a power consumption of the MEMS array; and
wherein the controller is further configured to control the switched voltage array and the MEMS array such that the IR spectrometer is operated as a hadamard transform spectrometer.
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Accused Products
Abstract
According to one aspect, an IR spectrometer includes a light source adapted to illuminate a sample, a grating adapted to spectrally disperse a light that has illuminated the sample, a MEMS array adapted to be electrostatically actuated by a controller to control a diffraction of the light, a detector configured to detect the light, and a power source adapted to supply power to the light source and to the MEMS array, wherein the controller is adapted to control the MEMS array so as to manage a power consumption of the IR spectrometer. In one embodiment, the IR spectrometer includes a housing sized and arranged to house the light source, the grating, the MEMS array, the controller, the detector, to and the power source in a hand-held device.
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Citations
20 Claims
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1. An IR spectrometer comprising:
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a light source configured to illuminate a sample with light; a grating configured to spectrally disperse the light that has illuminated the sample to provide a dispersed light; a controller; a MEMS array configured to be actuated to control a diffraction of the dispersed light to provide a plurality of wavelengths of light, the MEMS array comprising a plurality of individually controllable diffractive elements; a switched voltage array responsive to the controller and coupled to the MEMS array, the switched voltage array comprising a plurality of switched voltage sources configured to selectively turn the individually controllable diffractive elements of the MEMS array optically-on and optically-off responsive to the controller to diffract the plurality of wavelengths of light according to a hadamard matrix; and a detector configured to detect the plurality of wavelengths of light; wherein the controller includes a power management system adapted to control the MEMS array to manage a power consumption of the MEMS array; and wherein the controller is further configured to control the switched voltage array and the MEMS array such that the IR spectrometer is operated as a hadamard transform spectrometer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An IR spectrometer comprising:
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a light source configured to illuminate a sample with light; a grating configured to spectrally disperse the light that has illuminated the sample to provide a dispersed light; a controller; a MEMS array adapted to be actuated by the controller to control a diffraction of the dispersed light to provide a plurality of wavelengths of light; and a detector configured to detect the plurality of wavelengths of light, the detector comprising a single photodiode detector; wherein the controller is adapted to control the MEMS array so as to manage a power consumption of the MEMS array, and is further adapted to control the MEMS array so as to diffract the plurality of wavelengths of light; and wherein the detector is configured to be cooled with less than one watt of power.
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15. An IR spectrometer comprising:
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a light source configured to illuminate a sample with light; a grating configured to spectrally disperse the light that has illuminated the sample to provide a dispersed light; a controller; a MEMS array configured to be actuated to control a diffraction of the dispersed light to provide a plurality of wavelengths of light, the MEMS array comprising a plurality of individually controllable diffractive elements; a switched voltage array responsive to the controller and coupled to the MEMS array, the switched voltage array comprising a plurality of switched voltage sources configured to selectively turn the individually controllable diffractive elements of the MEMS array optically-on and optically-off responsive to the controller to diffract the plurality of wavelengths of light; and a detector configured to detect the plurality of wavelengths of light, the detector comprising a single photodiode detector; wherein the controller includes a power management system configured to control the operation of at least the MEMS array and the light source of the IR spectrometer so that an average power consumption of the IR spectrometer when in use is less than 5 Watts. - View Dependent Claims (16, 17)
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18. A hand-held IR spectrometer comprising:
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a light source configured to illuminate a sample with light; a grating configured to spectrally disperse the light that has illuminated the sample to provide a dispersed light; a controller; a MEMS array configured to be actuated to control a diffraction of the dispersed light to provide a plurality of wavelengths of light, the MEMS array comprising a plurality of individually controllable diffractive elements; a MEMS driver circuit responsive to the controller and coupled to the MEMS array, the MEMS driver circuit configured to selectively turn the individually controllable diffractive elements of the MEMS array optically-on and optically-off responsive to the controller to diffract the plurality of wavelengths of light; and a detector configured to detect the plurality of wavelengths of light, the detector comprising a single photodiode detector; a housing sized and arranged to be held in a hand and to house the light source, the grating, the MEMS array, the MEMS driver circuit, the controller, and the detector; wherein the controller is adapted to control the MEMS array to manage a power consumption of the MEMS array; and wherein the hand-held IR spectrometer is configured to weigh less than 5 pounds. - View Dependent Claims (19, 20)
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Specification