Abstract:
The light emission analyzing device includes: a first light intensity calculation unit that performs polynomial approximation on a spectroscopic spectrum indicating a light intensity for each wavelength in a container as measured by a spectrometer so as to calculate the light intensity; a second light intensity calculation unit that subtracts, for each wavelength, the light intensity calculated by the first light intensity calculation unit from the light intensity indicated by the spectroscopic spectrum measured by the spectrometer so as to calculate a light intensity corresponding to a bright-line spectrum of a molecule; and a ratio calculation unit that calculates, by using the light intensity calculated by the second light intensity calculation unit, a ratio between (a) a peak value of a molecular spectrum of a first molecule and (b) a peak value of a molecular spectrum of a second molecule.
Abstract:
A system and a method for acquiring an image of a particle flowing in a vessel, the system comprising a light source for generating an illuminating light, an imaging probe for laterally statically illuminating at least a portion of said vessel with the illuminating light, a detection unit for detecting emitted light from an illuminated portion of said particle, and a processor unit for reproducing an image of the illuminated portion of said particle from the emitted light.
Abstract:
The light emission analyzing device includes: a first light intensity calculation unit that performs polynomial approximation on a spectroscopic spectrum indicating a light intensity for each wavelength in a container as measured by a spectrometer so as to calculate the light intensity; a second light intensity calculation unit that subtracts, for each wavelength, the light intensity calculated by the first light intensity calculation unit from the light intensity indicated by the spectroscopic spectrum measured by the spectrometer so as to calculate a light intensity corresponding to a bright-line spectrum of a molecule; and a ratio calculation unit that calculates, by using the light intensity calculated by the second light intensity calculation unit, a ratio between (a) a peak value of a molecular spectrum of a first molecule and (b) a peak value of a molecular spectrum of a second molecule.
Abstract:
In one embodiment, a method for forming a recognition algorithm for laser-induced breakdown spectroscopy may include: determining a most mathematically different dataset of a plurality of spectral datasets corresponding to materials; dividing the spectral datasets into model development datasets and performance evaluation datasets; transforming, automatically with a processor, one of the model development datasets into a first discrimination model that discriminates the first spectra; removing the first spectra from the model development datasets to yield a subset of development datasets; determining a next most mathematically different spectral dataset of the spectral datasets; transforming the subset of development datasets into a second discrimination model that discriminates the second spectra; and combining the first discrimination model and the second discrimination model to form the recognition algorithm for laser-induced breakdown spectroscopy.
Abstract:
A laser induced breakdown spectroscopy system includes a laser module having a laser source, a sample chamber, a spectrometer arranged to capture spectral data from the sample chamber, a voltage source attached to the sample chamber arranged to apply a voltage to the sample during capture, and a controller in communication with the spectrometer, the voltage source and the laser module to trigger the voltage source and the spectrometer during laser excitation of the sample. A method of operating a laser induced breakdown spectroscopy system includes applying a voltage to a set of electrodes arranged around a sample, striking the sample with a laser during a time interval in which the voltage is being applied to the electrodes, sampling spectral data from the sample after the sample is struck with the laser, and removing the voltage after the spectral data has been sampled.
Abstract:
Systems and methods are disclosed for the detection and identification of objects, wherein an illumination device emits polychromatic light in the infrared range, creating a light curtain, or an essentially two-dimensional area of light in the X and Z axis. The light from the light curtain and light reflected or transmitted by an object in the light curtain is imaged, via aperture-imaging optics, onto an aperture that is in the optical path and behind the aperture-imaging optics. The aperture is an elongated opening extending along the Z axis. A wavelength-dispersive device, such as a grating, diffracts light admitted by the aperture wavelength-dispersively in a diffraction direction along the Y axis. An image sensor detects the diffraction image and generates image signals which are analyzed to identify the materials comprising the object. An output signal may be generated in response to the material identified.
Abstract:
A spectrum detecting device including a laser apparatus, an optical splitting apparatus, an optical gate, a first polarizer, a second polarizer, and an optical analysis apparatus is provided. The optical splitting apparatus splits the laser beam providing from the laser apparatus into a first and a second light beam, and the second light beam is transmitted to a sample to produce a spectral signal. The optical gate activated by the first light beam is disposed between the optical analysis apparatus and the sample. The first polarizer is disposed between the sample and the optical gate, and the second polarizer is disposed between the optical gate and the optical analysis apparatus. The spectral signal passes through the first polarizer, the optical gate, and the second polarizer to be transmitted and received to the optical analysis apparatus when the optical gate is activated and turned on in a predetermined time period.
Abstract:
A prism including a substrate faceted to provide a plurality of flat surfaces, wherein at least two of the plurality of surfaces, each including a filter coating, form at least two filter surfaces, wherein each filter surface selectively permits passage of a predetermined wavelength and reflects remaining wavelengths along an optical path towards another of the plurality of surfaces, optionally another filter surface, wherein an angle of incidence of each of the plurality of surfaces along the optical path is equal or nearly equal. An apparatus incorporating the prism and its use for splitting a light spectrum into a plurality of wavelengths or wavelength ranges.
Abstract:
An apparatus for optically analyzing a sample may include an imaging subsystem that images the sample, one or more analyzing subsystems that analyze the sample, a temperature control subsystem that controls a temperature of the atmosphere within the apparatus, a gas control subsystem that controls a composition of the atmosphere within the apparatus, and a control module that controls the various subsystems of the apparatus.
Abstract:
A laser induced breakdown spectroscopy system includes a laser module having a laser source, a sample chamber, a spectrometer arranged to capture spectral data from the sample chamber, a voltage source attached to the sample chamber arranged to apply a voltage to the sample during capture, and a controller in communication with the spectrometer, the voltage source and the laser module to trigger the voltage source and the spectrometer during laser excitation of the sample. A method of operating a laser induced breakdown spectroscopy system includes applying a voltage to a set of electrodes arranged around a sample, striking the sample with a laser during a time interval in which the voltage is being applied to the electrodes, sampling spectral data from the sample after the sample is struck with the laser, and removing the voltage after the spectral data has been sampled.