98results about "Spectrum generation using refracting elements" patented technology

An optical imaging apparatus 100, being configured for receiving an input light field 1 and for creating spectrally and spatially resolved image data Sω of the input light field 1, said input light field 1 having an input light field spectrum and two different polarization components 1A, 1B, comprises an autocorrelation device 10 being configured for receiving the input light field 1, controlling a delay between the polarization components 1A, 1B of the input light field 1 and providing an autocorrelation light field 2 including a superposition of the polarization components 1A, 1B, a photosensor device 20 having at least one polarizing element 21 and a photosensor 22 with a photosensor sensitivity spectrum and being configured for receiving the autocorrelation light field 2 and providing sensed spatially resolved light field sensor data Fτ, wherein the light field sensor data Fτ include a superposition of the spectrally resolved image data Sω to be obtained and the light field sensor data Fτ depend on said delay between the polarization components 1A, 1B of the input light field 1, and an image processor device 30 being coupled with the photosensor device 20 and being configured for calculating the spectrally resolved image data Sω based on the light field sensor data Fτ, wherein the image processor device 30 is configured for calculating the spectrally resolved image data Sω by applying a regularized inversion to the light field sensor data Fτ, said inversion being constructed in dependency on prior information on at least one of the input light field 1, the spectrally resolved image data Sω and the optical imaging apparatus 100. Furthermore, a spectral imaging method is described.

A detection arrangement (102) for an optical scanning microscope (100, 900) comprises a beam splitting element (120) configured to receive descanned detection light (118), to split the detection light (118) into two parts, to direct a first part (128a) of the detection light (118) into a first beam path (130a), and to direct a second part (128b) of the detection light (118) into a second beam path (130b). The first and second beam paths (130a, 130b) each comprise a dispersive element (122a, 122b) configured to spectrally separate the detection light (118) along a spectral separation direction (132a, 132b), and an array detector (124a, 124b) configured to receive the spectrally separated detection light (118). The beam splitting element (120), the first dispersive element (122a), and the second dispersive element (122b) are configured such that a first reference direction (134a) corresponding to a first spectral separation direction (132a) imaged back via the first beam path (130a) to a plane arranged before the beam splitting element (120, 702) and a second reference direction (134b) corresponding to a second spectral separation direction (132b) imaged back via the second beam path (130b) to the plane arranged before the beam splitting element (120) are different from each other.

The invention provides a hyperspectral imaging system. The hyperspectral imaging system comprises a telescope group, a collimator objective, a prism, a volume holographic diffraction grating, an imaging objective and an imaging sensor which are arranged in sequence, the telescope group is composed of a primary reflector, a secondary reflector, a third reflector, a plane reflector and an entrance slit; the primary reflector, the secondary reflector and the third reflector form an off-axis three-reflector structure; the plane reflector is used for folding a light path; the collimating objective lens, the prism, the volume holographic diffraction grating, the imaging objective lens and the imaging sensor form an imaging spectrometer, and an entrance slit is used as object space input; the formed off-axis three-mirror and folded light path and an imaging spectrometer are in coaxial butt joint by taking an entrance slit as a node, and are used for joint correction and splicing to form a hyperspectral imaging system. According to the optical path architecture, optimal matching of the unobstructed total reflection front end and the transmission type rear end is realized, and the detection sensitivity of crop weak spectrum signals is greatly improved while a better modulation transfer function of a full view field is ensured.

High-throughput hyperspectral imaging systems are provided. According to an aspect of the invention, a system includes an excitation light source; an objective that is configured to image excitation light onto the sample, such that the excitation light causes the sample to emit fluorescence light; a channel separator that is configured to separate the fluorescence light into a plurality of spatially dispersed spectral channels; and a sensor. The excitation light source includes a light source and a plurality of lenslet arrays. Each of the lenslet arrays is configured to receive light from the light source and to generate a pattern of light, and the patterns of light generated by the lenslet arrays are combined to form the excitation light. The objective is configured to simultaneously image each of the patterns of light to form a plurality of parallel lines or an array of circular spots at different depths of the sample.

The invention comprises a method and system for cost effective, convenient remote high fidelity color reproduction and matching that can be used to convey color to observers remote from the physical source of color. Such remote observers can include product consumers wishing to view a product color, for example. In a preferred embodiment, the method comprises capture of article or product reflectance spectra and the use of this spectrum to filter ambient light or directed light in the environment of a user remote from the article or product. Other embodiments of methods include various techniques to capture product spectral information and color matching functions useful for color reproduction using colored light sources. Additional systems embodiments include devices exploiting multiprimary displays to render the product color with reduced metamerism.

The invention discloses a double-path spatial-spectral domain joint compressed sensing imaging method and device, and belongs to the field of high-resolution spectral imaging and compressed imaging. Target light is divided into two paths through the beam splitter prism, and one path is imaged to the high-spatial-resolution detector through the imaging lens. And the other path enters a spatial spectrum compression measurement light path. A spatial-spectral joint coding matrix is generated for a spatial-spectral compression measurement light path, a DMD is introduced into the light path to serve as a spatial light modulator to load the joint coding matrix to carry out high-resolution spatial-spectral joint coding on a target scene, and then a prism is used as a dispersion element to carry out dispersion on the coding scene. And finally, carrying out space and spectrum down-sampling measurement on the coded information of dispersion through an imaging lens by using a low-spatial-resolution detector to obtain a low-spatial-resolution two-dimensional spectrum aliasing measurement value. An original high-space and high-spectral-resolution image can be reconstructed through a back-end reconstruction algorithm on the collected high-spatial-resolution gray-scale image and the low-spatial-resolution spectral aliasing image.

Systems and methods relating to a multi-slit hyperspectral imager. The imager is configured with multiple slits that are parallel to one another. Each slit produces its own hyperspectral cube and is limited to a specific wavelength range. The multiple slits produce multiple data sets, obtained in quick succession, for the same section of an area to be imaged. In optical spectrometry applications such as trace gas sensing and quantification, this allows for improved measurement precision. The imager may be used for any gas of interest by adjusting the wavelength range to one that contains absorption features of the targeted gas.

A detection arrangement for an optical scanning microscope includes a beam splitting element configured to receive reversely scanned detection light, split the detection light into two portions, direct a first portion of the detection light into a first light path and direct a second portion of the detection light into a second light path. The first and second optical paths each include a dispersive element configured to spectrally separate the detection light in a spectrally separating direction and an array detector for receiving the spectrally separated detection light. A beam splitting element, first and second dispersive elements are configured such that a first reference direction corresponding to a first spectral separation direction in which reverse imaging is performed via a first optical path toward a plane arranged before a beam splitting element and a second spectral separation direction in which reverse imaging is performed via a second optical path toward a plane arranged before a beam splitting element correspond The two reference directions are different from each other.

A hyperspectral imaging device includes an optical channel arranged to focus light at a first image plane. A spectrometer includes a slit formed at the first image plane to allow a slit-shaped portion of the light pass through. A dispersive element receives light from the slit and spectrally disperses it along a direction perpendicular to a width of the slit. A focusing lens focuses the spectrally dispersed light at a second image plane such that the spectral dispersion is imaged along a first axis thereof, and a spatial image of the slit width is imaged along a second axis for detection by a sensor. A sliding lens group between the optical channel and the first image plane moves to direct the incident light, scanning the entire image over the slit such that multiple frames acquired by the sensor each correspond to a horizontal line of the image.

An optical spectrum obtaining apparatus includes: a beam splitting unit, a first / second optical spectrum computation unit, and a processing unit. The beam splitting unit is configured to: receive a light beam from a light source, split the light beam into a first polarization component and a second polarization component with different polarization directions, transmit the first polarization component to the first optical spectrum computation unit, and transmit the second polarization component to the second optical spectrum computation unit. The first optical spectrum computation unit is configured to compute an optical spectrum of the first polarization component. The second optical spectrum computation unit is configured to compute an optical spectrum of the second polarization component. The processing unit is configured to obtain an optical spectrum of the light beam based on the optical spectrum of the first polarization component and the optical spectrum of the second polarization component.

To provide a detection device for an optical scanning microscope.SOLUTION: A detection device includes a beam splitting element configured to receive descanned detection light, split the detection light into two portions, direct a first portion of the detection light into a first beam path, and direct a second portion of the detection light into a second beam path. The first beam path and the second beam path include, respectively, a dispersive element configured to spectrally separate the detection light along a spectral separation direction and an array detector configured to receive the spectrally separated detection light. The beam splitting element, a first dispersive element, and a second dispersive element are configured such that a first reference direction corresponding to a first spectral separation direction imaged back to a plane arranged before the beam splitting element via the first beam path and a second reference direction corresponding to a second spectral separation direction imaged back to the plane arranged before the beam splitting element via the second beam path are different from each other.SELECTED DRAWING: Figure 1

To provide a spectrometer and a spectroscopic measurement system that can disperse and detect light in a wide wavelength region with sufficient diffraction efficiency.SOLUTION: A spectrometer 4 comprises: a spectroscopic portion 23; a light separation portion 25 that separates light P2 dispersed by the spectroscopic portion 23 into first light L1 in a first wavelength region and second light L2 in a second wavelength region shorter than the first wavelength region; and a light detection portion 27 that detects N-th order diffracted light included in the first light L1 separated by the light separation portion 25 and detects M-th order diffracted light included in the second light L2 separated by the light separation portion 25. N and M are integers other than 0 where the absolute value of N is less than the absolute value of M.SELECTED DRAWING: Figure 3

To provide a system and a method for measuring hemoglobin and bilirubin parameters in a whole blood sample using absorbance.SOLUTION: A system (10) includes: an optical sample module (20); a spectrometer module (100); a fiber optic assembly (90) that optically connects the optical sample module (20) to the spectrometer module (100); and a processor module (150). The optical sample module (20) has: a light emitting module (22) having an LED light source (28); a cuvette assembly (40); and a calibration optical module (60). The processor module (150) receives and processes electrical signals from the spectrometer module (100), and converts the electrical signals into output signals usable for displaying and reporting a hemoglobin parameter value and / or a total bilirubin parameter value for a whole blood sample.SELECTED DRAWING: Figure 1

Sensor and method for simultaneously measuring pressure by crystal luminescence and velocity by laser Doppler interferometry The invention relates to a sensor (1) for simultaneously measuring pressure and velocity comprising:- a crystal (2) comprising a face covered with a reflective layer (3),- a pumping laser (4) configured to emit a pumping beam (F1) towards the crystal and having a wavelength included in an absorption band of the crystal so that the illumination of the crystal by the pumping beam excites a portion of the electrons of the crystal,- a spectrometer (6) for receiving a luminescence signal (S1), resulting from a de-excitation of the electrons of the crystal, and for measuring the variation over time in wavelength of the lines of the light spectrum of said luminescence signal,- an interferometry system (12) configured to measure the variations in speed of the reflective layer over time by laser Doppler interferometry velocimetry. Figure for abstract: Fig. 1,

Methods and apparatuses are disclosed for true spectral flow cytometers that use wide band lasers to provide excitation light to cells, proteins, antibodies, and the like. Light from wide band lasers (emitting light through a continuous, wide bandwidth of wavelengths) is projected into a flow cell as a spread out spectrum to generate a spatially arranged spectrum that can excite a fluorescent response in cells passing through the flow cell to generate at least one excitation emission matrix (EEM) plot, wherein the EEM plot includes excitation wavelength, emission wavelength and fluorescence intensity.

Devices, systems, and methods include a system comprising a substrate having a transparent portion, one or more reactants on a first surface of the transparent portion of the substrate, a light source, and a light collector. The light source may be configured to illuminate the one or more reactants through the transparent portion of the substrate and the light collector may be configured to collect light from the one or more reactants. The light from the one or more reactants may be collected from the reactants without the light from the reactants traveling through the substrate and / or may be collected from the reactants after the light from the reactants has passed through the substrate.

Absorbance is used to measure hemoglobin and bilirubin parameters in whole blood samples.SOLUTION: System 10 includes an optical-sample module 20, a spectrometer module 100, a fiber-optic assembly 90 that optically connects optical-sample module 20 to spectrometer module 100, and a processor module 150. The optical-sample module 20 includes a light-emitting module having an LED light source, a cuvette assembly, and a calibration-light module. Processor module 150 receives and processes electrical signals from spectrometer module 100 and converts the electrical signals into output signals usable to display and report hemoglobin parameter values and / or total bilirubin parameter values for a whole blood sample.SELECTED DRAWING: Figure 1

Optical devices are described that improve hyperspectral imaging systems by modifying or correcting the relative tilt between the object plane and the image plane, while maintaining or reducing the size of the imaging system. An example dispersive optical system includes a plurality of integrated freeform optical prisms, including a first freeform prism that is positioned to receive an input optical beam, and a subsequent freeform prism configured to output an output optical beam. The dispersive optical system receives the input optical beam from a tilted object plane, and / or focuses the output optical beam onto a tilted image plane. The integrated freeform optical prisms modify the input optical beam to allow the object plane to be imaged onto the image plane without a tilt, and the output optical beam to include a plurality of spatially separated spectral contents. Each of the plurality of prisms includes at least one curved facet.

The disclosed implementations describe a system comprising: first optics to receive an input beam of light having a plurality of spectral components of light and to disperse the input beam into a plurality of spectral beams, wherein each of the plurality of spectral beams corresponds to one of the plurality of spectral components and propagates along a spatial path that is different from spatial paths of other spectral beams; and second optics to collect a portion of each of the spectral beams, wherein the portion collected depends on the spatial path of the respective spectral beam, and to form an output beam of light from the portion collected of each of the spectral beams, wherein a spectral distribution of the output beam is different from a spectral distribution of the input beam of light.

Devices, systems, and methods include a system for analyzing reactant arrays. The system may include a cartridge including a reactant array and a device for analyzing the reactant array when the cartridge is received by or in the device. The cartridge may include a compartment for receiving a specimen that is in fluid communication with the reactant array and an opening configured to receive a sample portion of the specimen. The system may include the specimen having the sample portion configured to be positioned in the compartment and a non-sample portion extending out of the compartment.

The devices, systems, and methods include a system for analyzing a reactant array. The system may include a cartridge containing the reactant array and a device for analyzing the reactant array when the cartridge is received by or within the device. The cartridge may include a compartment for receiving a specimen in fluid communication with the reactant array and an opening configured to receive a sample portion of the specimen. The system may include a specimen having a sample portion configured to be disposed within the compartment and a non-sample portion extending outward from the compartment.

The invention discloses a design method of a wavenumber linearity dispersion optical system and an imaging spectrometer, including: building an optical system including a grating, a prism and an objective lens that are sequentially arranged, the grating adjoins the prism; defining a linearity evaluation coefficient RMS; assigning a minimum value to the linearity evaluation coefficient RMS through adjustment to the vertex angle of the prism, when the linearity evaluation coefficient RMS is at minimum, the vertex angle of the prism being α1; acquiring compensations for distortion and longitudinal chromatic aberration of the objective lens based on the interval between equal-difference wavenumbers on the image plane when the vertex angle of the prism is α1; and optimizing the objective lens based on the compensations for distortion and longitudinal chromatic aberration of the objective lens to obtain an optimized optical system. Higher wavenumber linearity can be achieved through objective-lens-aberration compensated wavenumber linearity.

This spectrometer comprises: a spectroscopic unit; a light separation unit that separates light dispersed by the spectroscopic unit into first light in a first wavelength range and second light in a second wavelength range that is shorter than the first wavelength range; and a light detection unit that detects N-th order diffracted light included in the first light separated by the light separation unit and detects M-th order diffracted light included in the second light separated by the light separation unit. N and M are integers other than 0 where the absolute value of N is less than the absolute value of M.

This multispectral imager (1) comprises a sensor (3) and an optical system (5) including a spectral focusing optical group (9) and an axial displacement system (13) for said spectral focusing optical group (9). The optical system (5) is configured to refract electromagnetic radiation (R) incident on the sensor (3) and to implement spectral defocusing of the refracted electromagnetic radiation (R), the spectral defocusing being greater than 100 micrometers for a wavelength difference of 100 nanometers. The axial displacement system (13) moves the spectral focusing optical group (9) between a focusing position on the sensor (3) for electromagnetic radiation (R) with a wavelength of 500 nm, and a focusing position for electromagnetic radiation (R) with a wavelength of 1800 nm. Figure for the abbreviation: Fig. 1

Light detection systems are provided. Aspects of the light detection systems include first and second light receivers in fixed positions relative to each other, a plurality of wavelength separators configured to pass light from the first and second light receivers having a predetermined spectral range, and a plurality of light detection modules. Baseplates having a stage for mounting a light receiver, a plurality of recesses for fixing a plurality of light detection modules in rigid alignment relative to the stage, and a heat dissipation opening positioned within each recess are also provided. In addition, particle analysis systems, methods and kits for practicing the invention are disclosed.

Devices, systems, and methods include a system for analyzing a target area. The system may include an opaque member having one or more slits configured to be transverse to a target area, one or more lenses configured to receive light from the target area, and an image sensor configured to receive the light from the target area that has passed through the one or more slits and the one or more lenses. A controller may be in communication with the image sensor to process and / or monitor sensed light. The system may include an optical system that includes the opaque member and the one or more lenses, which may have a first set of lenses and a second set of lenses. The target area may include a substrate supporting one or more reactants. The system may be a Fourier transform hyperspectral imaging fluid analysis system.

An imaging system (10) for creating a color image from a plurality of acquisitions includes a first optical path (60) having a first field of view. The first light path (60) has an input coupling element ICE (20) and an output coupling element OCE (40), the input coupling element ICE (20) being designed to at least partially deflect light incident on the input coupling element ICE (20) from the first field of view to the output coupling element OCE (40). Furthermore, the outcoupling element OCE (40) is designed to at least partially outcouple the deflected light, and the incoupling element ICE (20) and / or the outcoupling element OCE (40) are / is designed to at least partially spectrally separate the light from the first field of view. The imaging system (10) further includes a second optical path (70) having a second field of view and including an entrance opening.

The application discloses a wide-narrow-slit combined partitioned constant star optical radiation characteristic simulation system, which is used for simulating the optical radiation characteristic of a star. The system is composed of a continuous laser light source, a multi-element partitioned mapping spectrum modulation system, a multi-channel integrating sphere coupling system, a multi-output optical fiber group, an optical fiber spectrometer monitoring system and a data processing and control system. The multi-element partitioned mapping spectrum modulation system comprises a pre-collimation and expansion system and multi-size slits. The pre-collimation and expansion system expands the light beam to fill the DMD array surface, and the wide-narrow-slit combination improves the energy and spectrum modulation capacity and compensates for the modulation interference. The double-prism symmetrically placed light splitting system ensures that the light beam is parallelly incident and output. The DMD array surface is divided into p independent sub-regions for independent modulation, each sub-region corresponds to a group of wide-narrow-slit channels, the independent modulation of the star point color temperature and the star magnitude is realized, and the sub-region modulation capacity satisfies the formula n >= t / c. The multi-channel integrating sphere coupling system realizes light mixing and independent output, and the system has high precision and strong flexibility.

To provide a spectral imaging unit capable of capturing images with high resolution even in a wider wavelength range of light.SOLUTION: A spectral imaging unit (1) includes a collimator lens group (20) with a positive refractive power, a prism group (30), a focus lens group (40) with a positive refractive power, and a sensor (36) including an imaging element (36a). In the vertical direction of the sensor (36), when a wavelength range of at least 450 nm and 1700 nm or less is defined as a wavelength dispersion range with respect to an effective element vertical distance of the sensor (36), an incident angle (θ1-θ3), a focal length (f), and a tilt angle (α) are determined so as to satisfy a condition that the wavelength dispersion range is within a range of at least 70% and 90% or less.SELECTED DRAWING: Figure 1