Abstract: Optical radiation from a sample is received by the slit and it is passed through an aperture in a reflective plane of a folding mirror towards a curved reflective surface of a collimating mirror. The slit and the curved reflective surface have a common optical axis. The reflective plane and the curved reflective surface face each other. The optical radiation passed through the folding mirror is collimated by the curved reflective surface. The collimated optical radiation is directed to the reflective plane of the folding mirror by the curved reflective surface. The collimated optical radiation is reflected in a direction other than the common optical axis of the slit and the curved reflective surface by the reflective plane.

Abstract: The present invention relates to systems and methods for minimizing or eliminating diffusion effects. Diffused regions of a segmented flow of multiple, miscible fluid species may be vented off to a waste channel, and non-diffused regions of fluid may be preferentially pulled off the channel that contains the segmented flow. Multiple fluid samples that are not contaminated via diffusion may be collected for analysis and measurement in a single channel. The systems and methods for minimizing or eliminating diffusion effects may be used to minimize or eliminate diffusion effects in a microfluidic system for monitoring the amplification of DNA molecules and the dissociation behavior of the DNA molecules.

Abstract: There are provided an optical measurement probe capable of obtaining a more stable measurement result, and an optical measurement device provided with the same. An incidence surface of an optical window to be used in a high temperature environment is covered by a deposited film. The optical window is formed of sapphire, and the deposited film is formed from SiO2. Adhesion of dirt to the incidence surface, and an influence, on a measurement result, of the adhesion of dirt on the incidence surface can thereby be prevented, and a more stable measurement result can be obtained.

Abstract: A high passband transmission ratio is obtained by splitting a light beam from an objective lens into two orthogonally-polarized components processed along distinct paths through two independently controllable liquid crystal tunable filters (LCTFs). The filtered portions may be combined at an imaging plane or may be separately processed without recombining. Using two LCTFs, the arrangements discussed herein may ideally achieve 100% transmission in a single passband when two orthogonal components of a single wavelength are tuned, or 50% transmission at two distinct passbands when two orthogonal components from two different wavelengths (one component from each wavelength) are tuned. The dual polarization configuration described herein may be used to improve contrast or detected signal intensity in various microscopy and spectroscopic/chemical imaging applications and to increase the speed of detection.

Abstract: For cavity enhanced optical spectroscopy, the cavity modes are used as a frequency reference. Data analysis methods are employed that assume the data points are at equally spaced frequencies. Parameters of interest such as line width, integrated absorption etc. can be determined from such data without knowledge of the frequencies of any of the data points.

Abstract: An apparatus for obtaining suspended particle information includes an optical array to divide light to a first path and a second path, a platform to orient a first and second container with either the first or second path, and a first and second photodetector to receive at least a direct illuminating component of the light of the first and second path after said light penetrates through the first and second container. A detector interface receives transmission signals from the first and second photodetectors of the direct illuminating component of the light after penetrating through the first and second container and a calculation engine computes the particle information based on a ratio of the received transmission signals.

Abstract: According to one embodiment, an etching amount measurement pattern is provided in a surface of a substrate. The pattern comprises a plurality of components two-dimensionally disposed and causing light incident on the pattern to be diffracted, A configuration of the component has 4-fold rotational symmetry. The plurality of components is arranged in a disposition having 4-fold rotational symmetry.

Abstract: A classification device (2) for identification of articles (3) in an automated checkout counter is presented. The device comprises a memory unit (5) capable of storing digital reference signatures, each of which digital reference signatures corresponds to an article identity, a processor (6) connected to the memory unit (5), and at least one sensor (4, 7, 14, 15, 16, 17, 18, 24) configured to determine a measured signature of an article (3) wherein said processor (6) is configured to compare said measured signature with the digital reference signatures, and to calculate a matching probability of a predetermined number of article identities.

Abstract: An Advanced Laser Fluorometer (ALF) can combine spectrally and temporally resolved measurements of laser-stimulated emission (LSE) for characterization of dissolved and particulate matter, including fluorescence constituents, in liquids. Spectral deconvolution (SDC) analysis of LSE spectral measurements can accurately retrieve information about individual fluorescent bands, such as can be attributed to chlorophyll-a (Chl-a), phycobiliprotein (PBP) pigments, or chromophoric dissolved organic matter (CDOM), among others. Improved physiological assessments of photosynthesizing organisms can use SDC analysis and temporal LSE measurements to assess variable fluorescence corrected for SDC-retrieved background fluorescence. Fluorescence assessments of Chl-a concentration based on LSE spectral measurements can be improved using photo-physiological information from temporal measurements.

Abstract: A spectrometer includes a light source to project a light beam to a target object, an optical element including a plurality of apertures through which the light beam reflected by the target object transmits, a diffraction element to form diffracted images from a plurality of light beams having transmitted through the optical element, and a light receiving element to receive the diffracted images formed by the diffraction element and including an optical shield to block a diffracted image other than a certain-order diffracted image.

Abstract: A beam reformatter to receive and split a beam into a plurality of beam portions, and further distribute and propagate two or more of the plurality of beam portions in substantially the same direction to create a reformatted composite beam, wherein the plurality of beam portions each contain the same spatial and spectral information as the received beam.

Abstract: A laser spectrometer and method for measuring gas component concentration in a measurement gas, wherein light intensity from a wavelength-tunable laser diode is detected after irradiation of the measurement gas and a reference gas, and the concentration of the gas component is determined based on reduction of the light intensity by the absorption of light at the position of a selected absorption line of the gas component, and the position of the absorption line of the gas component is referenced based on a selected absorption line of the reference gas, and wherein there is a mixed operation consisting of actual measurements of fast concentration changes of the gas component to be measured and a short reference/standardization phase for wavelength referencing, line locking and standardization, where the duration of the actual measurement is measured such that measuring conditions remain constant and do not deviate from those during the reference/standardization phase.

Abstract: Various systems and methods of monitoring laser safety by sensing contact of the system with a sample are provided. The system includes a focusing element for focusing an incident light from a laser light source onto a sample, an optical element having a collection zone for collecting a signal from the sample, a reflected light sensor for sensing a reflected light from the sample, wherein the reflected light sensor is located outside the collection zone of the optical element and on an inner surface of a housing of the system, an electrical circuit operably connected to the reflected light sensor and the laser light source and configured to control power to the laser light source in accordance with the reflected light sensed by the reflected light sensor and a spectral analyzer for processing the signal. Methods and other systems are also described and illustrated.

Abstract: A system for characterizing crude oil fractions includes a maltenes sample reservoir, a first solvent reservoir, a second solvent reservoir, and a third solvent reservoir. The system further includes a valve in fluid communication with the first solvent reservoir, the second solvent reservoir, and the third solvent reservoir and a pump in fluid communication with the valve. The system further includes a packed bed in fluid communication with the maltenes sample reservoir and the pump, a flowthrough cell in fluid communication with the packed bed, a spectrometer operably associated with the flowthrough cell, and a computer operably associated with the spectrometer. A method for characterizing crude oil fractions includes providing a maltene sample, eluting saturates, aromatics, and resins of the maltene sample, determining an optical density of each, and determining a concentration of each of the saturates, aromatics, and resins based upon optical densities over time for each.

Abstract: A spectral characteristic measurement method for measuring spectral characteristics of measured light with higher accuracy is provided. The spectral characteristic measurement method includes causing an optical measurement instrument having detection sensitivity in a first wavelength range to receive light in a second wavelength range which is a part of the first wavelength range, obtaining characteristic information indicating a stray light component from a portion of a first spectrum detected by the optical measurement instrument, that corresponds to a range other than the second wavelength range, and obtaining a pattern indicating a stray light component generated in the optical measurement instrument by subjecting the characteristic information to extrapolation processing as far as the second wavelength range in the first wavelength range.

Abstract: A lightweight, compact hyperspectral imaging system includes a fore-optics module and a wavelength-dispersing module. The imaging system may also include a detector, supporting electronics and a battery module. The fore-optics module may include a telescope with three or more mirrors, where the mirrors include a silver coating that provides high reflectivity over wavelengths in the visible and shortwave infrared portions of the spectrum. The modules of the imaging system may be incorporated in a housing having a longest linear dimension of 16 inches or less. The housing may be cylindrical in shape and have a length of 14 inches or less inches and a diameter of 8 inches or less.

Abstract: A miniaturized spectrometer/spectrophotometer system and methods are disclosed. A probe tip including one or more light sources and a plurality of light receivers is provided. A first spectrometer system receives light from a first set of the plurality of light receivers. A second spectrometer system receives light from a second set of the plurality of light receivers. A processor, wherein the processor receives data generated by the first spectrometer system and the second spectrometer system, wherein an optical measurement of a sample under test is produced based on the data generated by the first and second spectrometer systems.

Abstract: A tunable multiport optical filter includes various types of arrays of optical ports. The tunable filter also includes a light dispersion element (e.g., a grating) and a reflective beam steering element (e.g., a tilting mirror). An optical signal exits an optical (input) port, is dispersed by the light dispersion element, reflects off the reflective beam steering element back to the light dispersion element, and on to another optical (output) port. The reflective beam steering element can be steered such that a wavelength portion of the dispersed optical signal can be coupled to the optical output port. For example, the input optical signal may be a wavelength division multiplexed signal carrying multiple channels on different wavelengths, and the tunable multiport optical filter directs one of the channels to the output optical port. Additionally, the tunable filter may be incorporated into a device acting as a wavelength reference.

Abstract: The present invention relates to a system 100 for independently holding and manipulating one or more microscopic objects 158 and for targeting at least a part of the one or more microscopic objects within a trapping volume 102 with electromagnetic radiation 138. The system comprises trapping means for holding and manipulating the one or more microscopic objects and electromagnetic radiation targeting means (116). The light means comprising a light source and a spatial light modulator which serve to modify the light from the light source so as to enable specific illumination of at least a part of the one or more microscopic objects. The trapping means and the electromagnetic radiation targeting means (116) are enabled to function independently of each other, so that the trapped objects may be moved around without taking being dependent on which parts are being targeted and vice versa.

Abstract: A projection apparatus for providing multiple viewing angle images is disclosed. The projection apparatus includes a light source module, a polarizing light splitting element, a first and a second reflective light valve and a light combining element. The polarizing light splitting element has a light incident surface, a first light exiting surface and a second light exiting surface. The light incident surface optically couples with the light source module, while the first and the second light exiting surfaces optically couple with the first and the second reflective light valves respectively. The light combining element optically couples to the reflective light valves. Further, the light source module sequentially provides a first light beam and a second light beam. The light beams are transferred via the polarizing light splitting element, the reflective light valves and the light combining element to provide at least four viewing angle images to the viewers.

Abstract: A method for determining an asphaltene yield curve and an asphaltene flocculation point includes obtaining a crude oil sample and measuring an optical spectrum of the crude oil sample. A titrant is then mixed with the crude oil sample at different concentrations. At each concentration, precipitated asphaltenes are filtered from the mixture and the optical spectrum of the filtrate is measured. The optical spectrum of the filtrate is then subtracted from the optical spectrum of the crude oil sample. A fractional asphaltene precipitation is determined for each concentration of titrant. A flocculation point is determined corresponding to an inflection point in the fractional asphaltene precipitation for each concentration of titrant.

Abstract: Large digital displays for entertainment, architectural and advertizing displays have interconnected display panels with pluralities of light emitting elements. To solve calibration problems, each of the display panels stores measured luminance and chromaticity data for each of the light emitting elements of the panel. The luminance data is independent of the chromaticity data. A central controller can then perform calibration procedures so that the light emitting elements are matched across the entire display.

Abstract: A spectrograph including light beam reformatting element(s), beam expander(s), dispersive element(s) and light receiving element(s). The light beam reformatting element(s) reformat a received light beam into a reformatted light beam having a first dimension along a first axis that is larger than a dimension of the received light beam along the first axis and a second dimension along a second axis substantially orthogonal to the first axis that is smaller than a dimension of the received light beam along the second axis. The beam expander(s) anamorphically expand the reformatted light beam along the second axis into an expanded light beam. The dispersive element(s) disperse the expanded light beam along the second axis, resulting in a dispersed light beam. The light receiving element(s) receive the dispersed light beam. The light receiving element(s) may include one or more detectors to measure spectral intensity of the dispersed light beam.

Abstract: A hyperspectral imaging system and method are described herein for providing a hyperspectral image of an area of a remote object (e.g., scene of interest). The hyperspectral imaging system includes at least one optic, a scannable slit mechanism, a spectrometer, a two-dimensional image sensor, and a controller. The scannable slit mechanism can be a micro-electromechanical system spatial light modulator (MEMS SLM), a diffractive Micro-Opto-Electro-Mechanical Systems (MOEMS) spatial light modulator (SLM), a digital light processing (DLP) system, a liquid crystal display, a rotating drum with at least one slit formed therein, or a rotating disk with at least one slit formed therein.

Abstract: A wind turbine comprising an elongated blade body, a system for detecting an ice layer on the blade body, the system comprising a light source for emitting a light beam; a light splitting optical element optically connected to the light source so as to receive the light beam emitted from the light source, the optical element adapted to split the light beam received from the light source into a reference light beam and a detecting light beam, a boundary area which is arranged at the blade body so as to be exposed to the outer surroundings of the blade body and which is optically connected to the light splitting optical element such as to receive the detecting light beam and to reflect an internal reflected part of the detecting light beam at the boundary area and to transmit a transmitting part of the detecting light beam to the outer surroundings of the blade body through the boundary area and to allow an external reflected part of the transmitting part of the detecting light beam, which has been reflected fr

Abstract: Embodiments described herein correct errors in spectrometer outputs due to the presence of second-order light. Embodiments determine a relationship between first-order light and second-order light of the spectrometer output. The relationship is a function of wavelength and an output of the spectrometer due to the first-order light. The relationship is used to determine an estimated contribution of the second-order light to the output. Spectrometer errors introduced by the second-order light are corrected by adjusting the spectrometer output according to the estimated contribution of the second-order light.

Abstract: A spectral characteristic obtaining apparatus includes a detection unit detecting light quantities in plural wavelength bands from a measurement target, a storage unit storing pre-obtained spectral characteristics of the measurement target, a calculation unit calculating a primary transformation matrix from the light quantities and the pre-obtained spectral characteristics of at least one reference sample and a secondary transformation matrix from one of the pre-obtained spectral characteristics corresponding to a primary wavelength band and another one of the pre-obtained spectral characteristics corresponding to a secondary wavelength band, an estimation unit estimating the spectral characteristics of the measurement target by performing a primary estimation on the light quantities in the plural wavelength bands by using the primary transformation matrix, performing a secondary estimation on a result of the primary estimation by using the secondary transformation matrix, and compositing a result of the seco

Abstract: Methods for in situ detection and classification of analyte within a fluid sample are provided. In one embodiment, the method can include: (a) continuously flowing the fluid sample through a multivariate optical computing device, wherein the multivariate optical computing device illuminates an area of the fluid sample as it flows through the multivariate optical computing device to elicit a continuous series of spectral responses; (b) continuously measuring the series of multivariate spectral responses as the fluid sample flows through the multivariate optical computing device; (c) detecting an analyte (e.g., phytoplankton) in the sample based on an multivariate spectral response of the plurality of spectral responses; and (d) classifying the analyte based on the multivariate spectral response generated by the analyte.

Abstract: An optical resonator by which reflectivity of ring-down cavity mirrors can be altered and enhanced by adding external optical cavities that recycle light to the main cavity. A coupled-cavity ring-down spectroscopy (CC-RDS) is used for controlling the finesse of an optical resonator. Applications include extending the sensitivity and dynamic range of a cavity-enhanced spectrometer as well as widening the useful spectral region of high-reflectivity mirrors. CC-RDS uses controlled feedback of the probe laser beam to a ring-down cavity, which leads to interference between the internally circulating light and that which is fed back through a cavity mirror port.

Abstract: Disclosed herein describes an SERS sensing substrate comprising upright metal nanostructures made by using oblique angle deposition (OAD) collocating with self-rotation substrate, wherein said upright nanostructures include individual upright nanopillars and metal/dielectric multilayered upright nanopillar stacks. The SERS sensing substrate exhibits higher and enhanced adsorption spectra for unpolarized incident rays in the visible and infrared wavelength regimes.

Abstract: An interchangeable chromatic range sensor (CRS) probe for a coordinate measuring machine (CMM). The CRS probe is capable of being automatically connected to a CMM under program control. In one embodiment, in order to make the CRS probe compatible with a standard CMM auto exchange joint, all CRS measurement light transmitting and receiving elements (e.g., the light source, wavelength detector, optical pen, etc.) are included in the CRS probe assembly. The CRS probe assembly also includes an auto exchange joint element that is attachable through a standard auto exchange joint connection to a CMM. In one embodiment, in order to provide the required signals through the limited number of connections of the standard CMM auto exchange joint (e.g., 13 pins), a low voltage differential signaling (LVDS) serializer may be utilized for providing additional control and data signals on two signal lines.

Abstract: A mobile device testing system with a sphere assembly is disclosed. The sphere assembly is a source integrating sphere and a test integrating sphere connected by an optical channel. A source illuminates the source integrating sphere with electromagnetic radiation of a known spectrum of wavelengths, usually light. The electromagnetic radiation travels to the test integration sphere through the optical channel. A first filter assembly and/or a second filter assembly rotate a plurality of filters into the optical channel to change the spectral distribution of wavelengths of the electromagnetic radiation in the test integrating sphere. A mobile device is mounted to the test integrating sphere and the spectral distribution of an image acquired by the mobile device is compared to a spectral measurement from a spectrometer.

Abstract: A gas analyzer includes: a first signal processing section for synchronously detecting a light detection signal at a frequency being an integral multiple of a modulation frequency fa of a laser light, to detect a harmonic signal intensity Signal(?) by a harmonic synchronous detection method; a second signal processing section for capturing a light detection signal and cutting off a frequency component not smaller than the frequency fa to detect a light intensity signal I(?) at a specific light frequency absorbed by a component to be measured in a sample gas; and an operation section. The operation section includes a first operation means for calculating a density c of the component from the harmonic signal intensity Signal(?) and a reference light intensity signal I0(?) and a second operation means for calculating the density c from the light intensity signal I(?) and the reference light intensity signal I0(?).

Abstract: An automated identification of the types of white blood cells in a blood sample facilitates the manual identification of cancerous or other abnormal blood cells in the sample. Classifiers are predetermined for each type of white blood cell and subsequently used to automatically process images of cells in a sample stained with a nuclear dye or stain. The classifiers each comprise a linear weighted combination of morphometric and photometric features previously selected for white blood cells that were identified using monoclonal antibody stains. Red blood cells and excess fluid are removed from a sample being processed upstream of an imaging region of the imaging system. A plurality of different types of images are produced for each cell by the imaging system enabling automated identification of the white blood cells. Images of any cells not thus identified are manually reviewed to detect cancerous or abnormal cells.

Abstract: The compact microspectrometer for fluid media has, in a fixed spatial coordination in a housing, a light source, a fluid channel, a reflective diffraction grating, and a detector. The optical measuring path starting from the light source passes through the fluid channel and impinges on the diffraction grating. The spectral light components reflected by the diffraction grating impinge on the detector.

Abstract: The invention concerns a method for exciting a sub-wavelength inclusion structure, comprising: providing a first medium having a first refractive index ni and a second medium having a second refractive index nt, wherein ni>nt, wherein the sub-wavelength inclusion structure is arranged at a boundary between the first and second media, wherein the sub-wavelength inclusion structure exhibits polarizability properties; and directing light through the first medium towards the sub-wavelength inclusion structure. The angle of the incident light to the normal of the boundary, ?i, is such that, for a given set of: frequency of the light; surface density of inclusions; average polarizability of the inclusion structure at the frequency; first refractive index; and second refractive index, ?i fulfils at least one of the relations for s-polarized light and for p-polarized light described herein.

Abstract: The present invention makes the use of measurement of a diffraction spectrum in or near an image plane in order to determine a property of an exposed substrate. In particular, the positive and negative first diffraction orders are separated or diverged, detected and their intensity measured to determine overlay (or other properties) of exposed layers on the substrate.

Abstract: A spectral characteristic acquiring apparatus is provided which includes: an area dividing part; a spectrum separating part; a light receiving part; and a calculating part, wherein the calculating part includes a transformation matrix storing part that stores a transformation matrix used for calculating the spectral characteristic corresponding to electrical signals of a first diffraction pattern group including two or more adjacent diffraction patterns, and a spectral characteristic calculating part that calculates, based on the electrical signals of the first diffraction pattern group and the corresponding transformation matrix, the spectral characteristic at the locations of the image carrying medium corresponding to the apertures of the first diffraction pattern group.

Abstract: Embodiments of the present disclosure generally pertain to systems and methods for localized surface plasmon resonance (LSPR) sensing. A system in accordance with an exemplary embodiment of the present disclosure comprises an optical fiber having a metallic dot array on a tip of the optical fiber, a light source coupled to the optical fiber via a light coupler, and a spectrometer coupled to the optical fiber via the coupler. The light source is configured to transmit light within a range of wavelengths along the optical fiber. When the light reaches the dot array, the light excites surface plasmons of the dot array and causes the surface plasmons of the dots to resonate. The dots are chemically functionalized to have a specific affinity for a particular substance, and the resonance frequency of the dots changes when the substance is present thereby changing an absorption peak of the light.

Abstract: A cavity enhanced absorption spectrometer (CEAS) and method for controlling the same. The CEAS includes a coherent electro-magnetic radiation source, an electro-magnetic modulator that creates a sideband with an adjustable frequency that is offset from the radiation source frequency by imparting an adjustable frequency modulation to the radiation. The CEAS also includes a RF source that drives the electro-magnetic modulator and a cavity enhanced absorption resonator (CEAR) that receives the sideband. A detector measures the proximity of the frequency of the sideband relative to the resonant frequency of the CEAR and generates a proximity detector signal, which is converted by a controller to a control signal that controls at least one of the RF source and the resonant frequency of the CEAR such that the frequency of the sideband and the resonant frequency of the CEAR are adjusted to maintain a predetermined proximity therebetween.

Abstract: Provided is a snapshot spectral domain optical coherence tomographer comprising: a light source providing a plurality of beamlets; a beam splitter, splitting the plurality of beamlets into a reference arm and a sample arm; a first optical system that projects the sample arm onto multiple locations of a sample; a second optical system for collection of a plurality of reflected sample beamlets; a third optical system projecting the reference arm to a reflecting surface and receiving a plurality of reflected reference beamlets; a parallel interferometer that provides a plurality of interferograms from each of the plurality of sample beamlets with each of the plurality of reference beamlets; an optical image mapper configured to spatially separate the plurality of interferograms; a spectrometer configured to disperse each of the interferograms into its respective spectral components and project each interferogram in parallel; and a photodetector providing photon quantification.

Abstract: A spectroscopic detection device including: a stop in which an aperture is formed; a first and second photodetectors which detect detection light; a collimator which converts the detection light emitted from the stop into substantially parallel light, and emits light to at least one of the first and second photodetectors; a dispersive element which is arranged between the collimator and the first photodetector, and disperses the detection light; a condensing optical system which condenses the detection light dispersed by the dispersive element to the first photodetector; and a wavelength selection filter which is arranged between the collimator and the second photodetector, and allows light in a specified wavelength range to enter the second photodetector. The collimator is configured so that the focal length for the detection light emitted to the first photodetector may be different from the focal length for the detection light emitted to the second photodetector.

Abstract: A spectrocolorimeter comprises: a calculation unit configured to calculate wavelengths of dispersing light rays respectively received by a plurality of pixels included in a light detection unit using a correspondence relationship between pixels and wavelengths of a plurality of extremal value points in a profile of dispersing light rays detected by the light detection unit upon execution of colorimetry of a reference object to be measured, wherein when the calculation unit calculates the wavelengths of the dispersing light rays respectively received by the plurality of pixels, the calculation unit adjusts a colorimetry condition for respective extremal value points so that signals to be output from pixels corresponding to the plurality of extremal value points have output levels which are not less than a reference and are not saturated.

Abstract: A probe having a probe head in which is formed an opening for receiving a sample to be analyzed, the head comprising a pair of optical interfaces disposed at an opposing inner surface of the opening to delimit a path for optical radiation through the opening, wherein one of the pair of optical interfaces comprises a transparent element adapted to permit optical radiation in one or more wavelength regions of interest to travel between the probe head and the opening, the optical probe comprising a movable diaphragm in which one of the pair of optical interfaces is located for movement therewith and an actuator operably connected to the diaphragm to control its movement so as to vary the path length wherein the probe head comprises a hinge system cooperable with the actuator to move the optical interface in the movable diaphragm in an arc to vary the path length.

Abstract: A dispersive element is disclosed which is designed to receive incident light (1) and disperse the incident light (1) into multiple spatially separated wavelengths of light. The dispersive body (DB) comprises a collimation cavity (COLL) to collimate the incident light (1), at least two optical interfaces (PRIS) to receive and disperse the collimated light (2) and a collection cavity (CLCT) to collect the dispersed light (3) from the at least two dispersive interfaces (op1, op2) and to focus the collected light (4).

Abstract: A spectroscopic system including a light source adapted to provide a beam of illumination; an optical system adapted to provide the beam of illumination to a sample and receive a spectroscopy signal from the sample and direct the spectroscopy signal to at least one single channel detector is provided. The optical system comprises an adjustable dispersing element for directing one or more spectral features of the spectroscopy signal to the at least one single channel detector. A calibration detector is adapted to determine a set point of the adjustable dispersing element; and a source synchronization component is adapted to synchronize an operation of the light source and the at least one single channel detector. A method of calibrating a dispersing element of a spectrometer is also provided.

Abstract: A spectrometer sample head including a housing, at least one source of radiation in the housing, and a flip top sample cell including first and second hinged plates and a window through the first plate with a pane in the window, the pane for receiving a sample thereon. The housing includes a channel for receiving the plates when coupled together for placing the sample in the optical path of the radiation.

Abstract: A multispectral imaging device for satellite observation utilizing “push broom” scanning over an observed area centered on one or more wavelengths which can be electrically controlled to produce a filtering function wavelength band, thus obviating the need for conventional stacking.

Abstract: A system for measuring properties of a thin film coated glass having a light source, a spectrometer, at least one pair of probes, a first optical fiber switch and a second optical fiber switch. The pair of probes includes a first probe located on one side of a glass sheet and a second probe located on the opposite side of the glass sheet, directly across from the first probe. The first and second optical fiber switches are adapted to couple either probe to the light source and/or the spectrometer. Because the design of the system is optically symmetrical, calibration may be performed without the use of a reference material such as a tile or mirror. Each of the first and second probes has a first leg and a second leg that are separated from each other by a distance n so that angled reflections may be detected.

Abstract: A spectrometer cell can include a spacer, at least one end cap, and at least one mirror with a reflective surface. The end cap can be positioned proximate to a first contact end of the spacer such that the end cap and spacer at least partially enclose an internal volume of the spectrometer cell. The mirror can be secured in place by a mechanical attachment that includes attachment materials that are chemically inert to at least one reactive gas compound. The mechanical attachment can hold an optical axis of the reflective surface in a fixed orientation relative to other components of the spectrometer cell and or a spectrometer device that comprises the spectrometer cell. The mirror can optionally be constructed of a material such as stainless steel, ceramic, or the like. Related methods, articles of manufacture, systems, and the like are described.