Abstract:
The present invention relates to a spectroscopic analyzing apparatus having a structure for enabling detection of a continuous spectrum over an overall detecting region by sharing the overall detection wavelength range to a plurality of detectors. The spectroscopic analyzing apparatus has a spectroscope, a plurality of detectors, and direction changers provided in connection with one or more detectors among the plurality of detectors. The spectroscope separates incident light into one or more wavelength components. The respective detectors are arranged such that the optical path lengths from the spectroscope to the centers of the photodetecting faces thereof are made coincident with one another. The respective direction changers are arranged on the optical paths of the wavelength components that propagate from the spectroscope to the detectors, and changes the propagation directions of the wavelength components, whereby the direction changers function to adjust the optical path lengths of the wavelength components.
Abstract:
Systems and techniques for improved spectroscopy. In some embodiments, mechanical and/or optical zoom mechanisms may be provided for monochromator systems. For example, movable detector systems allow a detector to be positioned with respect to a dispersive element in order to obtain a first resolution. The detector systems may then allow the detector to be positioned with respect to a dispersive element to obtain a second different resolution. In some embodiments, spectroscopy of a first sample region may be performed using a plurality of excitation wavelengths. Multiple detectors may be positioned to receive light associated with different ones of the plurality of excitation wavelengths.
Abstract:
Systems and methods for integration of fluorescence and reflective imaging are provided. The system and method can measure reflectance and fluorescence spectrally and spatially with co-registered hyperspectral signatures, and can output a co-registered image from first and second co-registered hyperspectral image data sets.
Abstract:
A spectroscopic sensor for measuring flat sheet product is disclosed. The disclosed sensor uses a combination of spectrometers and single-channel detectors and filters together with a broadband source of illumination to optimally measure multiple properties of a flat sheet product. A spectrometer is used to measure over a spectral range where an easily configurable set of wavelength channels is needed and where the signal-to-noise ratios and spectral resolutions of the channels are consistent with the spectral range and number of pixels of the spectrometer; while one or more single channel detector and filter combinations are used to measure, with high signal-to-noise ratio, at specific wavelengths within or outside the spectral range of the spectrometer(s). Therefore, the single channel detectors can be used to complement the information provided by a spectrometer or to extend the working range of a spectrometer by providing single wavelength measurements anywhere in the visible, near-IR or mid-IR spectral regions.
Abstract:
A fluid analysis system for use downhole comprises an input light signal that is directed through a fluid sample housed in a sample cell. The input light signal may originate from a plurality of light sources. An output light signal from the sample cell is then routed to one or more spectrometers for measurement of the represented wavelengths in the output light signal. The output of the spectrometers is then compared to known values for hydrocarbons typically encountered downhole. This provides insight into the composition of the sample fluid. Additionally, the light from the light sources can be routed directly to the one or more spectrometers to be used in calibration of the system in the high temperature and noise environment downhole.
Abstract:
A shutter includes micro-optics having first and second concentrator arrays. A transducer laterally displaces one of the first and second concentrator arrays between transmissive and shuttered modes. In the transmissive mode, the arrays of concentrators are optically aligned to permit electromagnetic energy passing through the first array of concentrators to pass through the second array of concentrators. In the shuttered mode, the electromagnetic radiation is blocked from passing through the second array of concentrators. The concentrators may be compound parabolic concentrators, or lenslets positioned on opposing plates with pinholes printed therethrough. The shutter may increase f-number of radiation passing therethrough, and may be used in a limited f-cone radiation source with shuttering abilities, for example reducing f-cone of radiation output from the radiation source.
Abstract:
A spectroscopy system is provided which is optimized for operation in the VUV region and capable of performing well in the DUV-NIR region. Additionally, the system incorporates an optical module which presents selectable sources and detectors optimized for use in the VUV and DUV-NIR. As well, the optical module provides common delivery and collection optics to enable measurements in both spectral regions to be collected using similar spot properties. The module also provides a means of quickly referencing measured data so as to ensure that highly repeatable results are achieved. The module further provides a controlled environment between the VUV source, sample chamber and VUV detector which acts to limit in a repeatable manner the absorption of VUV photons. The use of broad band data sets which encompass VUV wavelengths, in addition to the DUV-NIR wavelengths enables a greater variety of materials to be meaningfully characterized. Array based detection instrumentation may be exploited to permit the simultaneous collection of larger wavelength regions.
Abstract:
A photoelectric color measuring head for measuring color properties of a measurement object includes an illumination device for exposing the measurement object to illuminating light and a wavelength-range-selective photoelectric receiver device (40) which intercepts measurement light remitted by the illuminated measurement object and converts it into corresponding electrical measurement signals. The illumination device includes an essentially white light-emitting diode (30) and means (60) for defining the angle of incidence range, so that the measurement object receives light only within an angle of incidence range, standardized for color measurement applications, of preferably 45°+/−5-10°. The receiver device includes a sensor field consisting of a multitude of photoelectric sensor pixels arranged in a line and the sensor pixels are made sensitive to different wavelength ranges through previously arranged color filters (420). The sensor field is in the form of a chip and is mounted together with the light-emitting diode (30) on a shared printed circuit board (1). The color filters (420) are arranged on an elongated transparent filter carrier and mounted directly above the light inlet window of the sensor field. The sensor field is formed together with the color filters as a flat sandwich structure and surrounded by a protective frame and cast with an opaque sealing compound. The color measuring head has an extremely small structural volume and can be produced with relatively limited construction resources.
Abstract:
A reaction container, a light source unit including light emitting devices that are different in wavelength of an emitted light beam and output dichroic mirrors that are different in wavelength range of a reflectible light beam, and a photoreceptive unit including photoreceptors and photoreceptive dichroic mirrors that are different in wavelength range of a reflectible light beam are used. The light emitting devices are arranged so that output directions thereof may be in parallel, and the output dichroic mirrors are arranged so that the reflected light beams may pass through the same optical path in the same direction. The photoreceptors are arranged so that photoreceptive surfaces may be in parallel, and the photoreceptive dichroic mirrors are arranged so that output light beams from the reaction container may be reflected by the photoreceptive dichroic mirrors and may enter the photoreceptors, according to wavelengths of the output light beams.