Abstract:
A color measurement instrument that is capable of both spot reading and strip reading. The instrument includes a handheld unit and a docking unit. When removed from the docking unit, the handheld unit is used for spot reading. When docked in the docking unit, the handheld unit and the docking unit are used together for strip reading. The handheld unit includes a self-storing target that is deployed for spot reading and stored for strip reading. The handheld unit also includes a self-storing calibration plaque that is deployed for calibration and stored otherwise. When docked, the handheld unit teeters on the docking unit between a normally closed position and a manually selectable open position to accommodate a variety of sample thickness.
Abstract:
The disclosure generally relates to a method and apparatus for compact FabryPerot imaging spectrometer. More specifically, in one embodiment, the disclosure concerns a tunable Fabry-Perot optical filter for providing a spatially accurate wavelength-resolved image of a sample having two spatial dimensions. The optical filter may include plural filter elements having an initial predetermined spacing between adjacent filter elements; and a micro electro-mechanical system ("MEMS") actuator. One of the plural filter elements may be attached to the MEMS actuator so that the actuator is capable of moving said one filter element relative to another of said plural filter elements to thereby tune said Fabry-Perot optical filter.
Abstract:
A compact device (210) useful for measuring an absorption spectrum of a liquid, such as water with organic contaminants, is provided. The compact device (210) comprises an array of LEDs (121,122,123,124) each emitting light with a unique spectral peak. A reflector (130) shaped as a half ellipsoid reflects the emitted light (180a,180d) to form a reference beam (181a,181b). The reflector (130) has an opening (136) to allow part of the emitted light (180b,180c) to form a measurement beam (182a,182b) after passing through the liquid. Two photodetectors (140,150) measure the reference beam (181a,181b) and the measurement beam (182a,182b) to give a reference intensity and a measured intensity, respectively. The LEDs (121,122,123,124) sequentially emit showers of light one-by-one, giving plural pairs of reference and measured intensities for estimating the absorption spectrum. The compact device (210) receives energy from a separate power-providing device (230) through wireless power transfer. The power-providing device (230) harvests motional energy of the flowing liquid to generate electrical energy.
Abstract:
A functional near-infrared spectroscopy sensor may include: a pliable substrate; a near infrared LED embedded in the pliable substrate; a red LED embedded in the pliable substrate; an optical detector embedded in the pliable substrate; a data storage device that receives and stores information derived from the optical detector and that is configured to attach to a head of a mammal or to an object that attaches to the head of mammal; and a source of electrical energy that powers the LEDs and the data storage device and that is configured to attach to a head of a mammal or to an object that attaches to the head of mammal.
Abstract:
Modular systems can be used for optical analysis, including in-situ analysis, of stimulated liquids. An excitation module can include a radiation sources, e.g., a laser, LED, lamp, etc. A detection module can include one or more detectors configured to receive spectral and/or temporal information from a stimulated liquid. Such systems can be used to identify or measure optical emissions including fluorescence or scattering. The efficient excitation of liquid samples and collection of emissions from the samples provides substantial, up to four-fold increase in the emission signal over prior systems. In an example, emission measurements can be conducted in an isolated sample compartment, such as using interchangeable modules for discrete sampling, flow-through sampling, or sampling via fiber probe. The systems and methods described herein can be used to characterize natural aquatic environments, including assessments of phytoplankton pigments, biomass, structure, physiology, organic matter, and oil pollution.
Abstract:
본 발명의 실시예는 특정 파장 대역별 단색광을 갖는 복수개의 LED(발광 다이오드)을 이용하여 물질이 가지고 있는 성분 측정 및 품질 분석을 제공하는 휴대용 물질 분석 시스템에 관한 것이다. 본 발명의 실시예에 따른 휴대용 물질 분석 시스템은, i)1차 전지 혹은 2차 전지로 구성되고, 상용 전원을 직류 변환하는 어댑터가 포함되며, 시스템을 구성하는 전기적 부하에 전원을 공급하는 전원부와, ii)시스템의 운용에 따른 제반적인 동작과 물질의 성분 측정 진행과정, 품질 분석 결과를 문자 및 설정된 형식의 그래프로 표출하는 표시부와, iii)금속 소재로 구성되며, 시료가 수용되는 시료 셀을 안착시키는 측정모듈과, iv)서로 다른 파장 대역을 갖는 복수개의 발광 다이오드로 이루어지며, 제어보드의 제어에 따라 순차적으로 점등되어 고유 파장 대역의 단색광을 상기 시료 셀에 조사하는 LED 유닛과, v)상기 측정모듈에서 시료와 반응한 작용광의 스펙트럼을 검출하여 노이즈를 제거하고, 전기적 신호로 변환시켜 제어보드에 인가하는 검출기와, vi)사용자 인터페이스(UI)의 품질 분석 요구에 따라 LED 유닛을 작동시켜 서로 다른 파장 대역의 단색광을 순차적으로 조사시키고, 상기 검출기로부터 시료와 반응한 작용광의 스펙트럼을 분석하여 성분을 측정하며, 데이터 베이스의 기준 데이터와 비교하여 품질 분석한 다음 결과를 저장하고, 표시부에 설정된 소정의 형식으로 출력하는 제어보드를 포함한다.
Abstract:
According to one aspect, an IR spectrometer includes a light source adapted to illuminate a sample, a grating (105) adapted to spectrally disperse a light that has illuminated the sample, a MEMS array (110) adapted to be electrostatically actuated by a controller to control a diffraction of the light, a detector (116) 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, and the power source in a hand-held device .
Abstract:
The disclosure relates to a portable and/or handheld bioagent detector and methodology described herein that is based in part on advanced Raman Chemical Imaging ("RCI") technology. According to one embodiment of the present disclosure, the detection system may include a fiber array spectral translator ("FAST") and may also include a probe which may include a complementary metal oxide semiconductor (CMOS) camera. The probe alleviates the need to place the main instrument close to an unconfined release of a potentially hazardous material and facilitates analysis of a sample that is situated in a hard-to-reach location while minimizing contamination of the detector and operator.
Abstract:
A color measurement system includes a hand held color measurement instrument, which may be provided with a wireless interface to a computer. The color measurement system includes a scanning guide for holding the hand held color measurement instrument in proper alignment with a color target. The scanning guide includes a calibration reference to allow convenient calibration of the hand-held color measurement instrument. The hand-held color instrument includes an illumination ring to provide visual feedback to the user. The color of the illumination ring changes in order to display a color similar to that being read by the hand-held color measurement instrument. Color management profiling of the hand held color measurement instrument illumination ring improves the color rendition capability of the illumination ring.
Abstract:
The disclosure relates to a method and apparatus for a compact birefringent interference imaging spectrometer. More specifically, the disclosure relates to a portable system for obtaining a spectrum of a sample. The portable system may include a first photon emission source (1105, 1110) for illuminating the sample with a first plurality of photons to thereby produce photons scattered by the sample; an optical lens (1116) for collecting the scattered photons; a filter (1124, 1130) for receiving the collected scattered photons and providing therefrom filtered photons; a first photon detector (1126, 1132) for receiving the filtered photons and obtaining therefrom a spectrum of the sample; and a rejection filter (1107) for blocking the photons from said first photon emission source from entering said first photon detector. The disclosure additionally relates to methods of using such portable systems.