Multiplexing rotary spectrometer
First Claim
1. A spectrometer comprising:
- a plurality of optical bandpass filters housed on a first body that is moveable relative to at least one other member of the spectrometer;
a plurality of detector circuits;
wherein, each detector circuit is permanently optoelectrically coupled to a single optical bandpass filter.
1 Assignment
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Accused Products
Abstract
A rotary spectrometer including a plurality of input ports. Each input port may be arranged to receive an optical waveguide carrying electromagnetic radiation. The spectrometer also includes a plurality of optical bandpass filters, which are housed on a first body that rotates under the control of a motor so that each optical bandpass filter may be brought into alignment with each input port. Further, the spectrometer includes a plurality of detector circuits disposed on a second body that rotates with the first body. Each detector circuit is optoelectrically coupled to one of the plurality of optical bandpass filters, thereby resulting in each detector circuit being dedicated to responding to a range of wavelengths determined by the bandpass filter to which it is optoelectrically coupled.
26 Citations
44 Claims
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1. A spectrometer comprising:
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a plurality of optical bandpass filters housed on a first body that is moveable relative to at least one other member of the spectrometer; a plurality of detector circuits; wherein, each detector circuit is permanently optoelectrically coupled to a single optical bandpass filter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A spectrometer comprising:
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a plurality of input ports, each input port arranged to receive an optical waveguide carrying electromagnetic radiation; a plurality of optical bandpass filters, the filters being housed on moveable first body arranged such that each optical bandpass filter may be brought into alignment with each input port; and a plurality of detector circuits disposed on a second body that moves with the first body; wherein each detector circuit is optoelectrically coupled to one of the plurality of optical bandpass filters, thereby resulting in each detector circuit being dedicated to responding to a range of wavelengths determined by the bandpass filter to which it is optoelectrically coupled. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method of selecting a gain factor of a detector circuit in a spectrometer, wherein the spectrometer comprises a plurality of input ports, a plurality of optical bandpass filters, and a plurality of the detector circuits, each input port being arranged to receive an optical waveguide carrying electromagnetic radiation, each optical bandpass filter being movable so that it may be brought into alignment with any given input port, each of the detector circuits being optoelectrically coupled to one optical bandpass filters, the method comprising:
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supplying electromagnetic radiation from a source, along one of the optical waveguides, to one of the optical bandpass filters; receiving, with a photoelectric element, electromagnetic radiation that has passed through the one optical bandpass filter and creating an electric signal having an amplitude approximately in proportion to intensity of the electromagnetic radiation impinging upon the photoelectric element; supplying the electric signal to the detector circuit that is coupled to the one optical bandpass filter, thereby creating a detector output signal in approximate proportion to the electric signal; and adjusting the gain factor of the detector circuit that is coupled to the one optical bandpass filter without having moved the one optical bandpass filter so as to bring it into alignment with another of the optical waveguides. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33)
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34. A method of manufacturing an article that is exposed to electromagnetic radiation during at least one phase of manufacture, the method comprising:
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bringing a substance in a first state to a source of electromagnetic radiation; exposing the substance to the electromagnetic radiation, whereby the substance is caused to transition to a second state; and monitoring the source of electromagnetic radiation with a spectrometer having a plurality of optical bandpass filters housed on a first body that rotates under the control of a motor and a plurality of detector circuits, wherein each detector circuit is permanently optoelectrically coupled to a single optical bandpass filter. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42, 43, 44)
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Specification