3119 results about "Spectrograph" patented technology

A composite detector device that incorporates a plurality of types of detector elements to cover a broad wavelength range. There may be one or more individual detector elements of each detector type. The individual detector elements are positioned upon a single substrate so that when light from a sample passes through a spectral dispersing element, each detector element is exposed to light of a predetermined, limited wavelength range.

Embodiments of the present invention provide an apparatus with a flexible probe suitable for determining properties of in vivo tissue from spectral information collected from various tissue sites. An illumination system provides light at a plurality of broadband ranges, which are communicated to a flexible optical probe. Light homogenizers and mode scramblers can be employed to improve the performance in some embodiments. The optical probe in some embodiments physically contacts the tissue, and in some embodiments does not physically contact the tissue. The optical probe receives light from the illumination system and transmits it to tissue, and receives light diffusely reflected in response to the broadband light, emitted from the in vivo tissue by fluorescence thereof in response to the broadband light, or a combination thereof. The optical probe can communicate the light to a spectrograph which produces a signal representative of the spectral properties of the light. An analysis system determines a property of the in vivo tissue from the spectral properties.

In the color imaging system, multiple rendering devices are provided at different nodes along a network. Each rendering device has a color measurement instrument for calibrating the color presented by the rendering device. A rendering device may represent a color display in which a member surrounds the outer periphery of the screen of the display and a color measuring instrument is coupled to the first member. The color measuring instrument includes a sensor spaced from the screen at an angle with respect to the screen for receiving light from an area of the screen. A rendering device may be a printer in which the measuring of color samples on a sheet rendered by the printer is provided by a sensor coupled to a transport mechanism which moves the sensor and sheet relative to each other, where the sensor provides light from the sample to a spectrograph. The color measuring instruments provide for non-contact measurements of color samples either displayed on a color display, or printed on a sheet, and are self-calibrating by the use of calibration references in the instrument.

The invention provides a system and method utilizing, among other things, fluorescence spectroscopy in the ultraviolet portion of the electromagnetic spectrum to determine chemical species and concentrations. The basic measuring system includes optics, a spectrograph, a detector, and an energy source (“head” components), along with a computer and control electronics and power source capable of generating and detecting unique fluorescence signatures for individual and unique mixtures of chemical substances including, for example, prescribed and/or compounded medications, alcohol products, food types, synthetic drugs, narcotics, perfumes, liquids, and the like.

A system for determining gas compositions includes a probe, inserted into a source of gaseous material, the probe having a gas permeable sensor tip and being capable of sending and receiving light to and from the gaseous material, a sensor body, connected to the probe, situated outside of the source and a fiber bundle, connected to the sensor body and communicating light to and from the probe. The system also includes a laser source, connected to one portion of the fiber bundle and providing laser light to the fiber bundle and the probe a Raman spectrograph, connected to another portion of the fiber bundle, receiving light from the probe and filtering the received light into specific channels and a data processing unit, receiving and analyzing the received light in the specific channels and outputting concentration of specific gas species in the gaseous material based on the analyzed received light.

The invention discloses an LED optical parameter comprehensive testing device, belonging to the technical field of optical parameter measurement. The LED optical parameter comprehensive testing device is technically characterized in that one end of a horizontal base provided with a one-dimensional mobile platform is fixedly provided with an arc-shaped clamp provided with a fiber-optic probe and astandard luminosity probe, the other end of the horizontal base is fixedly provided with an arc-shaped light collector consisting of an arc fiber-optic array and a linear array CCD (Charge Coupled Device), and a rotary clamping table for holding an LED to be tested is arranged on the one-dimensional mobile platform; light information acquired by the fiber-optic probe is converted into a spectrum band by a spectrograph and then is sent into a computer, outputs of the standard luminosity probe and the linear array CCD are sent to the computer through the data acquisition unit, the computer performs corresponding processing and operation on measurement data through measurement software to finally obtain the luminescence characteristics of the LED to be tested. According to the invention, theproblem on comprehensively measuring the LED on a single measurement instrument is solved; and the LED optical parameter comprehensive testing device has the characteristics of simplicity for operation, compact structure, fastness for measurement, easiness for realization and the like.

A multiwavelength imaging and spectroscopic photoemission microscope system (100) which simultaneously provides images in a broad range of the electromagnetic spectrum, such as between 200 nm-1000 nm (optical or visible light) and 1000 nm-500 nm (infrared light). The multiwavelength imaging and spectroscopic photoemission microscope system comprises a microscope (102), a spectrometer (106), a beam splitter (108), a first spectrum focal plane array (110) including an appropriate photodiode (114A), a second spectrum focal plane array (120) including an appropriate photodiode (114B), and a cryogenic vessel (160) to maintain relevant portions of the system at a very low temperature. The invention may be used in failure analysis of integrated circuits and in semiconductor and low temperature physics.

The invention discloses a transmission type Mueller matrix spectrum ellipsometer and a measuring method thereof. The transmission type Mueller matrix spectrum ellipsometer measuring method comprises the following steps: projecting modulation rays produced by a partial arm on the surface of a to-be-tested sample, a check partial arm demodulates and receives the rays reflected (or transmitted) by the to-be-tested sample, by proceeding harmonic wave analysis to a tested spectrum, computing and acquiring the full Mueller matrix information of the to-be-tested sample, further through arithmetic of nonlinear regression, liberty matching, and the like, and fitting and extracting information of an optical constant, characteristic, morphology, size and the like of the to-be-tested sample. An ellipsometer comprises the partial arm (comprises light source, a lens group, a polarizer, and a compensator driven by a servo motor),the to-be-tested sample and the check partial arm (comprises the compensator driven by a servo motor, an analyzer the lens group and a spectrograph. The transmission type Mueller matrix spectrum ellipsometer and the measuring method thereof can achieve all kinds of materials and components with information phoelectron functions, and online measurement of all kinds of nano-structures in nano-fabrication, so that transmission type Mueller matrix spectrum ellipsometer and the measuring method thereof have the advantages of being capable of possessing non-destructive property, fast, and low in cost.

An optical slicer for generating an output spot comprising an image compressor which receives a substantially collimated input beam and compresses the beam, wherein the input beam, if passed through a focusing lens, produces an input spot; an image reformatter which receives the compressed beam to reformat the beam into a plurality of sliced portions of the compressed beam and vertically stacks the portions substantially parallel to each other; and an image expander which expands the reformatted beam to produce a collimated output beam which, if passed through the focusing lens, produces the output spot that is expanded in a first dimension and compressed in a second dimension relative to the input spot.

Systems and methods for fast and sensitive standoff surface-hazard detection with high data throughput, high spatial resolution and high degree of pointing flexibility. The system comprises a first hand-held unit that directs an excitation beam onto a surface that is located a distance away from the first unit and an optical subsystem that captures scattered radiation from the surface as a result of the beam of light. The first unit is connected via a link that includes a bundle of optical fibers, to a second unit, called the processing unit. The processing unit comprises a fiber-coupled spectrograph to convert scattered radiation to spectral data, and a processor that analyzes the collected spectral data to detect and/or identify a hazardous substance. The second unit may be contained within a body-wearable housing or apparatus so that the first unit and second unit together form a man-portable detection assembly. In one embodiment, the system can continuously and without interruptions scan a surface from a 1-meter standoff while generating Raman spectral-frames at rates of 25 Hz.

The present invention discloses an isolating material air permeability measuring device which comprises a double vacuum sealing structure permeating gas sampling device and an isolation material air permeability measuring device of the current limiting air extraction pipeline, the device comprises a permeation gas sampling device with double vacuum sealing structure, an ultrahigh vacuum system, a mass spectrograph and a calibrating device, wherein the permeation gas sampling device is connected to the mass spectrograph 3, the current limiting air extraction pipeline 6 and the calibrating device 19-24 through the flange 2 and the vacuum valve 4. The device can overcome the defects of low signal-to-noise ratio when the mass spectrum signal of the permeation air is measured and difficulty for measuring the isolation material with low air permeability existing in the existing technique, and has the characters of quick measuring speed, being able to measure the permeability rate of all gases to the isolation material.

An optical network monitor and a method for monitoring the optical signals of an optical network including a spectrograph that includes a detector array, a processor and outputs. The network monitor receives an optical input signal which includes individual channels. The optical signal is transmitted onto the spectrograph which disperses the optical signal into the individual channels. The individual channels are directed onto the detector array so that the channels are spaced across the detector array. The detector array detects the channels in parallel and transmits to the processor channel parameter data which is processes the parameter data through internal algorithms to produce the outputs.

The invention discloses a spatially-separated pump-probe transient absorption spectrograph and a realization method. The realization method is characterized by generating a light source through a femtosecond light source system; realizing the beam splitting of pump light and probe light through a beam splitter; realizing the different time delay of the probe light through a time delay line; realizing the two-dimensional rotation and the calibration of the probe light within a horizontal plane and a vertical plane through a sweep reflector group; calibrating which means guaranteeing the incidence of the rotated probe light into a aperture within the front section of an objective lens; finally, obtaining a two-dimensional image formed on a sample under the combined action of the probe light and the pump light by a data collection system. According to the spatially-separated pump-probe transient absorption spectrograph and the realization method, the extremely high spatial discrimination can be realized, and moreover, the visual probe of carriers, excitors or plasmons can be realized.

The invention relates to a multifunctional environment-friendly electronic machine intelligent recycling recognition system. The multifunctional environment-friendly electronic machine intelligent recycling recognition system comprises a recycling cabinet body, wherein the recycling cabinet body comprises a detection room and two element boxes. The detection room is provided with a cabinet door, and the bottom of the detection room is provided with a containing door. The internal room wall of the detection room and the inner side of the cabinet door are provided with a plurality of webcams. A spectrograph signal projector (namely light source) is arranged inside the detection room, and a spectrograph signal receiver is arranged on the top of the detection room or one face, opposite to the spectrograph signal projector (namely light source), of the detection room. The top of the detection room is provided with an expansion link, and the tail end of the expansion link is provided with a holding device. The multifunctional environment-friendly electronic machine intelligent recycling recognition system has the advantages of being low in cost, high in recognition rate, high in response speed, low in energy consumption, high in anti-interference and weather ability and high in automaticity, can be placed in public places such as a community, a school and a market, can conveniently and rapidly recognize daily-use plastic products such as plastic bags, beverage bottle and daily use chemical product packages, and fully stimulates environmental protection positivity of people by means of conducting credit accumulating to recycled articles.

The invention provides an energy dispersion device, spectrograph and method that can be used to evaluate the composition of matter on site without the need for specialized training or expensive equipment. The energy dispersion device or spectrograph can be used with a digital camera or cell phone. A device of the invention includes a stack of single- or double-dispersion diffraction gratings that are rotated about their normal giving rise to a multiplicity of diffraction orders from which meaningful measurements and determinations can be made with respect to the qualitative or quantitative characteristics of matter.

An apparatus and method capable of providing spatially multiplexed IR spectral information simultaneously in real-time for multiple samples or multiple spatial areas of one sample using IR absorption phenomena requires no moving parts or Fourier Transform during operation, and self-compensates for background spectra and degradation of component performance over time. IR spectral information and chemical analysis of the samples is determined by using one or more IR sources, sampling accessories for positioning the samples, optically dispersive elements, a focal plane array (FPA) arranged to detect the dispersed light beams, and a processor and display to control the FPA, and display an IR spectrograph. Fiber-optic coupling can be used to allow remote sensing. Portability, reliability, and ruggedness is enhanced due to the no-moving part construction. Applications include determining time-resolved orientation and characteristics of materials, including polymer monolayers. Orthogonal polarizers may be used to determine certain material characteristics.

The invention provides an automatic vehicle-mounted soil nutrient detection and sampling device based on a near infrared spectrum technology. The automatic vehicle-mounted soil nutrient detection and sampling device comprises a movable platform, a control box, a soil collecting device, a soil storage device, a soil breaking device, an optical system, a GPS, a spectrograph, an industrial personal computer and a controller, wherein the movable platform is provided with traveling wheels, the control box is arranged on the movable platform, the soil collecting device and the soil storage device are arranged on the movable platform, the soil breaking device and the optical system are arranged on the bottom of the movable platform, the GPS is arranged on the top of the control box, and the spectrograph, the industrial personal computer and the controller are arranged in the control box. The automatic vehicle-mounted soil nutrient detection and sampling device is simple to operate; a plurality of processes such as spectrum collection, recording, clustering analysis, and collection of representative soil samples are controllable and continuous, the entire test process is environmentally-friendly and free of pollution, the test system is not damaged, and the continuous monitoring on a large-sized field can be realized; not only can the detection cost be reduced, but also the prediction precision of a model can be improved.

A system for laser scanning provides spectral flexibility needed for the spectroscopic monitoring of highly multiplexed samples, such as cellular and particle assays in whole blood or other suspensions. In accordance with embodiments of the present invention, the system comprises a scanner to direct an excitation laser through a sample, an objective to collect light emitted by the sample in response to the excitation laser, a spectrograph to disperse the emitted light over a plurality of wavelengths as a spectrum, and a charge coupled device for detecting the spectrum. The system can be used with samples having a variety of reporter tags, including one or more SERS tags, fluorescent organic and protein tags, and quantum dot tags. A laser scanning apparatus and method of using the same is also provided.

The invention discloses a spectrum polarization detection device and a method for synchronous polarization modulation interference imaging. The spectrum polarization detection device comprises a preposed polarization imaging system, an image plane interference imaging spectrometer and a signal processing system which are arranged on the same optical axis in sequence. Incident light forms four groups of light beams with different polarization state information through a polarization element and the light beams are separated on a space of a back focal plane of a microlens array. The separated light beams shoot into a lateral cutting beam splitter after passing through a collimator objective lens and are divided into two crosswise, and optical path difference information is brought in. Two branches of emergent light passes through a postpositional imaging objective lens, a target image with interference information and polarization state information is obtained on a target face of a detector, and the target image is transformed into an electrical signal and enters a signal processing system. Fourier transform is carried out, and light intensity information, spectral information and complete Stokes polarization information of a two-dimensional space of each target point are obtained. The spectrum polarization detection device for synchronous polarization modulation interference imaging has the advantages of being high spectral resolution, high in signal to noise ratio and simultaneous in complete Stokes polarization information and can be used for spectrum detection of a narrow band or a wide band.

The invention relates to a low-voltage electric wire carrier communication test method and a testing system thereof. The testing method comprises the following testing methods: I, a carrier transmitting PWL online testing method; II, a carrier receiving sensitivity online testing method; III, a carrier communication anti-interference online testing method; IV, a low-voltage circuit impedance change online testing method. The testing system comprises a carrier transmitting device, a program control attenuating device, a tested carrier receiving device, a manual power network, a frequency spectrograph receiver, a computer, a frequency spectrograph, a noise simulator, an impedance simulator and a purifying power. The invention has the advantages of adopting a manual power network parameter model regulated in GB/T 6113 F2, thus having a high standardization degree and comparable testing data; avoiding the testing problems brought by adopting different carrier communication schemes; realizing the online sensitivity testing; carrying out the test at any time and being not affected by the external environment factors like the weather; besides, the invention can simulate the impedance change environment of a real circuit, thus leading the analyzing of the carrier communication on the impedance change of the circuit to be feasible.