Patent application number | Description | Published |
20090040516 | SPECTROSCOPIC SYSTEM - A spectroscopic system having a coded aperture as a gating device. Light of a Raman scattering may enter the system and encounter a mask gate. The mask may have a matrix of micro mirrors some of which pass light on to a diffraction grating when the gate is on. Some of the mirrors will not pass on light thereby resulting in coded light to the grating. If the gate is off, then no light is passed on to the grating. The grating may pass the coded and spectrally spread light on to a detector array. The array signals representing the light on the array may go to a processor so one can obtain information about the target that emanated the Raman scatter when impinged by a light beam. | 02-12-2009 |
20090114822 | TERAHERTZ DISPERSIVE SPECTROMETER SYSTEM - A spectrometer system for providing information about a target with terahertz radiation. The system may receive incident radiation from the target through fore optics, a slit aperture, secondary optics and a dispersive element which images a slit on an array of terahertz sensitive detectors. The detectors may include uncooled sensors. Each sensor may be connected to its own micro antenna. The array of detectors may be situated proximate to the dispersive element so that radiation from the element may be dispersed according to wavelength to the respective detectors optimally sensitive to the various respective wavelengths. Detector signals indicating the impingement of terahertz radiation may provide information for identifying a material of the target. | 05-07-2009 |
20090219525 | SYSTEM AND METHOD FOR PORTABLE RAMAN SPECTROSCOPY - One embodiment includes a method that includes scanning a plurality of specimens with a laser by moving the laser according to coordinates for laser movement and measuring a distance for each of the plurality of specimens, associating location information with each of the specimens of the plurality of specimens based on its distance from the laser and its coordinates for laser movement, recording a Raman spectrum for the plurality of specimens, associating a Raman spectrum with each specimen of the plurality of specimens and indicating a Raman spectrum and location information for at least one specimen. | 09-03-2009 |
20090273770 | SYSTEMS AND METHODS FOR SAFE LASER IMAGING, DETECTION AND RANGING (LIDAR) OPERATION - A Laser Imaging, Detection and Ranging (LIDAR) system that automatically adjusts laser output so that no eye damage occurs to human targets. In one example, a component automatically measures range to targets in a field of view and determines the closest targets based on the measured range. A laser device outputs a laser beam and a controller adjusts one of pulse repetition frequency, power, or pulse duration of the laser device based on the measured range of the closest target in order to comply with a predefined eye safety model. | 11-05-2009 |
20090320561 | PHOTOACOUSTIC CELL - Embodiments of the apparatus, systems, and methods relate to a photoacoustic cell including an excitation source, a chamber, and a quantum dot substrate between the excitation source and the chamber. The excitation source generates a light spectrum. The quantum dot substrate, when subjected to the light spectrum, emits a specific wavelength of light to be received by the chamber. The photoacoustic cell apparatus may be part of a portable gas sensing system, and may be used to detect and measure the concentration of one or more gases. Additional apparatus, systems, and methods are disclosed. | 12-31-2009 |
20100014068 | MINIATURIZED CYTOMETER FOR DETECTING MULTIPLE SPECIES IN A SAMPLE - A system for scattered light and simultaneous multi-color (e.g., greater than sixteen colors) fluorescence light detecting, and for analyzing, classifying and identifying biological particles and items of interest. A sample to be tested may be entered in a disposable microfluidic cartridge which in turn is insertable in a portable, hand-holdable, or wearable miniaturized cytometer instrument. The present system may be incorporated in the cytometer instrument. It may have significant application relative to biological warfare, environmental substances, the medical field and other fields. | 01-21-2010 |
20100045998 | PHOTOACOUSTIC SENSOR - Embodiments of the apparatus, systems, and methods relate to a photoacoustic sensor includes an excitation source, a modulator, a quantum dot filter, an interferometer, a gas chamber, and a microphone. The excitation source generates a monochromatic light. The modulator intensity modulates the monochromatic light at a first modulation frequency. The quantum dot filter down converts the modulated monochromatic light into a broadband spectrum of infrared light. The interferometer further intensity modulates the broadband spectrum such that the at least one wavelength component of the broadband spectrum is further intensity modulated at a second modulation frequency. The gas chamber stores a sample gas and receives the plurality of modulated wavelength components. The microphone detects pressure changes within the gas chamber to produce an acoustic signal, which can be used to analyze properties of the sample gas. | 02-25-2010 |
20120075618 | PHOTOACOUSTIC SENSOR - Embodiments of the apparatus, systems, and methods relate to a photoacoustic sensor includes an excitation source, a modulator, a quantum dot filter, an interferometer, a gas chamber, and a microphone. The excitation source generates a monochromatic light. The modulator intensity modulates the monochromatic light at a first modulation frequency. The quantum dot filter down converts the modulated monochromatic light into a broadband spectrum of infrared light. The interferometer further intensity modulates the broadband spectrum such that the at least one wavelength component of the broadband spectrum is further intensity modulated at a second modulation frequency. The gas chamber stores a sample gas and receives the plurality of modulated wavelength components. The microphone detects pressure changes within the gas chamber to produce an acoustic signal, which can be used to analyze properties of the sample gas. | 03-29-2012 |
20120199743 | TERAHERTZ DISPERSIVE SPECTROMETER SYSTEM - A spectrometer system for providing information about a target with terahertz radiation. The system may receive incident radiation from the target through fore optics, a slit aperture, secondary optics and a dispersive element which images a slit on an array of terahertz sensitive detectors. The detectors may include uncooled sensors. Each sensor may be connected to its own micro antenna. The array of detectors may be situated proximate to the dispersive element so that radiation from the element may be dispersed according to wavelength to the respective detectors optimally sensitive to the various respective wavelengths. Detector signals indicating the impingement of terahertz radiation may provide information for identifying a material of the target. | 08-09-2012 |
20120307239 | DYNAMIC CODED FILTER GAS DETECTION - A device for detecting gas concentrations includes a movable coded filter. An optical element is positioned to receive gas filtered light and spectrally separate the gas filtered light. A photo detector is positioned to receive the spectrally separated light through slits in the moveable coded filter to provide an AC signal representative of a selected gas. | 12-06-2012 |
20130048844 | LIGHT COLLECTOR DEVICES - Light collector devices and methods of operating light collector devices are described herein. One or more embodiments include a plurality of apertures, and a detector coupled to each of the plurality of apertures. | 02-28-2013 |
20140022393 | DUAL BAND IMAGER - A dual band imager includes a lens to receive short wavelength and medium or long wavelength radiation from a scene to be imaged, a beam splitter positioned to receive the radiation from the lens, a medium or long wavelength to short wavelength image converter positioned to receive long wavelength radiation reflected via the beam splitter and to transmit the image information via short wavelength radiation, and a detector to receive the short wavelength radiation containing the image information through the beam splitter or from the scene and from the image converter. | 01-23-2014 |