A multispectral sensor device may include a sensor array comprising a plurality of channels and one or more processors to determine that a time-sensitive measurement is to be performed, wherein the time-sensitive measurement is to be performed using data collected by one or more channels of the plurality of channels; cause the data to be collected by a proper subset of channels, of the plurality of channels, wherein the proper subset of channels includes the one or more channels; and determine the time-sensitive measurement based on the data.

An object recognition apparatus includes a first spectrometer configured to obtain a first type of spectrum data from light scattered, emitted, or reflected from an object; a second spectrometer configured to obtain a second type of spectrum data from the light scattered, emitted, or reflected from the object, the second type of spectrum data being different from the first type of spectrum data; an image sensor configured to obtain image data of the object; and a processor configured to identify the object using data obtained from at least two from among the first spectrometer, the second spectrometer, and the image sensor and using at least two pattern recognition algorithms.

Systems for determining the presence and distribution of gas emissions in an area are provided. For example, a system may include one or more light detectors and one or more reflectors and/or one more retroreflectors disposed around the perimeter, a light source configured to emit light at a plurality of wavelengths towards the one or more light detectors and/or the one or more reflectors and/or one or more retroreflectors, and one or more processors configured to receive information representing light intensity detected by the one or more light detectors, respectively at each of the plurality of wavelengths and determine gases present in each path based on the light intensity detected by the respective detector at each of the plurality of wavelengths and distribution thereof. The path being either light source-respective detector, light source-respective reflector-respective detector or light source-respective retroreflector-respective detector. Other system may not use reflectors and/or retroreflectors.

A nanotube spectrometer array includes: a substrate including block receivers; photodetectors arranged in an array with each photodetector including: a single wall carbon nanotube disposed on the substrate in a block receiver and disposed laterally along the block receiver; a source electrode on the single wall carbon nanotube; a drain electrode on the single wall carbon nanotube, such that the source and drain electrodes are separated from each other by a photoreceiver portion of the single wall carbon nanotube; and a gate electrode disposed on the substrate such that substrate is interposed between the gate electrode and the single wall carbon nanotube. The single wall carbon nanotube in each photodetector is a different chirality so that each photodetector absorbs light with a maximum photon absorptivity at a difference wavelength that is based on the chirality of the single wall carbon nanotube of the photodetector.

The present invention discloses an infrared image-spectrum associated intelligent detection method and apparatus, including: first searching for targets in a field of view (FOV), and performing image-spectrum associated intelligent identification sequentially on the searched targets, that is, first performing infrared image target identification on each target, and if a detection identification rate is greater than a set threshold, outputting an identification result and storing target image data; otherwise, acquiring an infrared spectrum of the target, and performing target identification based on infrared spectrum features. The present invention further discloses an apparatus for performing target detection using the above method, and the apparatus mainly includes a two-dimensional scanning mirror, a multiband infrared optical module, a long-wave infrared (LWIR) imaging unit, a broadband infrared spectrum measuring unit, and a processing and control unit. The method and apparatus of the present invention are improvements and enhancements of the conventional infrared target detection method and device, and may be used for infrared image detection, infrared image-spectrum associated detection of the target and infrared spectrum collection of the target. Compared with the conventional infrared detection device, the present invention has a higher performance cost ratio, and can significantly improve the detection identification rate of the target.

An apparatus for carrying out polarization resolved Raman spectroscopy on a sample (15), in particular a crystalline sample, comprises: at least one light source (11), in particular at least one laser, for providing excitation radiation to a sample (15), a spectrograph (31) for dividing light from the sample (15), in particular Raman scattered light from the sample (15), into at least one spectrum of spatially separated wavelength components and for directing at least a portion of the at least one spectrum to a detector (29), in particular a CCD detector, a polarization state control element (27) for the light from the sample (15), the polarization state control element (27) being arranged in a light path of at least one light beam (25) traveling from the sample (15) towards the detector (29), and the polarization state control element (27) comprising at least one polarization sensitive optical element (45, 47), in particular a Wollaston prism, the at least one polarization sensitive optical element being adapted to split the at least one light beam (25) into at least two, in particular orthogonally, polarized light beams (35a, 35b, 37a, 37b).

The measurement of solar irradiance measurement have important applications, including solar resource assessment, solar power plants, photovoltaic system monitoring, heating and cooling loads of buildings, climate modeling and weather forecasting. An option to establish this is to solely measure the global horizontal irradiance and employ an irradiance decomposition algorithm to derive direct normal irradiance and diffuse horizontal irradiance. However, these models vary in complexity and generally have a relatively high uncertainty particularly between latitudes +60° N and −45° S these errors which includes large portions of North America, Europe, Russia, and Asia where the applications are centered. The inventors have established an improved methodology based upon an improved decomposition algorithm yielding improved accuracy in derived solar irradiance measurements in conjunction with a low cost non-moving part spectral pyranometer supporting spectral global irradiance measurements and spectral clearness indices.

An optical device may comprise an array of sensor elements that includes a plurality of pixels and a multispectral filter disposed on the array of sensor elements. The multispectral filter may be configured to pass a first transmission percentage of light of a particular spectral range to a first set of pixels of the plurality of pixels and pass a second transmission percentage of light of the particular spectral range to a second set of pixels of the plurality of pixels.

An example system includes a light source, a first spectrometer, a second spectrometer, and an electronic control module. The light source is operable to emit light within a first range of wavelengths in a field of illumination. The first spectrometer is operable to measure first sample light reflected from an object within a second range of wavelengths and in a first field of detection. The second spectrometer is operable to measure second sample light reflected from the object within a third range of wavelengths and in a second field of detection. The electronic control module operable to determine, based on the measured first sample light and the measured second sample light, a distance between the system and the object, and determine, based on the measured first sample light and the measured second sample light, a spectral distribution of light corresponding to the object.

A nanotube spectrometer array includes: a substrate including block receivers; photodetectors arranged in an array with each photodetector including: a single wall carbon nanotube disposed on the substrate in a block receiver and disposed laterally along the block receiver; a source electrode on the single wall carbon nanotube; a drain electrode on the single wall carbon nanotube, such that the source and drain electrodes are separated from each other by a photoreceiver portion of the single wall carbon nanotube; and a gate electrode disposed on the substrate such that substrate is interposed between the gate electrode and the single wall carbon nanotube. The single wall carbon nanotube in each photodetector is a different chirality so that each photodetector absorbs light with a maximum photon absorptivity at a difference wavelength that is based on the chirality of the single wall carbon nanotube of the photodetector.