50results 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.

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.

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.

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.

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.

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 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

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 devices, systems, and methods include a system for analyzing a reactant array (e.g., a reactant array of a colorimetric sensor 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 an input port, an output port, and components between the input and output ports. The device may be configured to engage a pump component to pump fluid through a pathway in fluid communication with the input port, the output port, and the reactant array. The reactant array may include one or more reactants (e.g., analyte-sensitive materials).

An optical spectrum obtaining method and apparatus are provided, relating to the field of optical technologies. The optical spectrum obtaining apparatus includes: a beam splitting unit, a first optical spectrum computation unit, a 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. This application can resolve a problem that a computational spectrometer cannot determine an optical spectrum of an unpolarized light beam. The optical spectrum obtaining apparatus provided in this application can obtain the unpolarized optical spectrum of the light beam. This application is for optical spectrum obtaining.

A detection arrangement (102, 302, 402, 602, 704, 806) for an optical scanning microscope (100, 300, 400, 600, 700, 800) comprises a beam splitting element (120) configured to receive descanned detection light (118), to direct a first part (118a) of the detection light (118) having a first wavelength range into a first beam path (128a), and to direct a second part (118b) of the detection light (118) having a second wavelength range different from the first wavelength range into a second beam path (128b). The first beam path (128a) comprises a first array detector (124a) configured to receive the first part (118a) of the detection light (118), and the second beam path (128b) comprises a second array detector (124b) configured to receive the second part (118b) of the detection light (118). The detection arrangement (102, 302, 402, 602, 704, 806) further comprises an upstream dispersive element (126, 804) arranged upstream of the beam splitting element (120) and configured to spectrally separate the descanned detection light (118).

The invention relates to the technical field of hyperspectral imagers, and particularly provides a spectral line correction method and device for a multi-slit hyperspectral imager, and the method comprises the steps: S10, building a coupling model between an off-axis slit parameter of a multi-slit array and a structure parameter of a light splitting element; s20, on the basis of the coupling model, constructing a dual-objective optimization function taking the minimization of the sum of bending of the multi-slit spectral line and the minimization of the dispersion linearity as objectives; and S30, adopting a multi-objective genetic algorithm, taking the off-axis slit parameter and the structure parameter of the light splitting element as synchronous optimization variables, and solving the dual-objective optimization function to obtain an initial structure. According to the invention, the spectral line bending of each slit of the multi-slit hyperspectral imager can be effectively corrected, and the dispersion uniformity of all slits can be considered at the same time.

The present application relates to hyperspectral imager technical field, specifically provide a kind of for the spectral line correction method, equipment of multislit hyperspectral imager, the spectral line correction method includes the following steps: S10, the coupling model between the off-axis slit parameter of the multislit array and the structure parameter of the spectrometer element is established;S20, based on the coupling model, construct with multislit spectral line bending summation minimization and dispersion linearity minimization as target double-target optimization function;S30, using multi-objective genetic algorithm, with the off-axis slit parameter and the structure parameter of spectrometer element as synchronous optimization variable, the initial structure is obtained by solving the double-target optimization function.The present application can effectively correct the spectral line bending of each slit of multislit hyperspectral imager, while taking into account the uniformity of all slit dispersion.

This invention discloses a mid-wave infrared and long-wave infrared multispectral imaging system, belonging to the field of mid-wave infrared and long-wave infrared multispectral imaging. It includes a beam splitter for separating the incident beam, a long-wave infrared multispectral imaging system arranged along the transmission path of the beam splitter, and a mid-wave infrared multispectral imaging system arranged along the reflection path of the beam splitter. The long-wave infrared multispectral imaging system, arranged sequentially along the optical path, comprises a beam splitter, four long-wave infrared refractors, a long-wave infrared multispectral filter, a long-wave infrared detector window, a long-wave infrared detector cold stop, and a long-wave infrared detector imaging surface. The mid-wave infrared multispectral imaging system, arranged sequentially along the optical path, comprises a beam splitter, a mid-wave infrared reflector, six mid-wave infrared refractors, a mid-wave infrared multispectral filter, a mid-wave infrared detector window, a mid-wave infrared detector cold stop, and a mid-wave infrared detector imaging surface. This invention achieves miniaturization of the filters through a reasonable filter layout design, effectively improving the system's compactness.

A hyperspectral imaging device and method disclosed herein overcomes technical problems associated with the prior art by replacing the intensity measurement performed by the single high-resolution 2D sensor of state-of-the-art methodologies, with the measurement of intensity (fluctuation) correlations retrieved by two high-resolution 2D sensors: one—the imaging / spatial sensor dedicated to polychromatic image acquisition, the other—the spectral sensor dedicated to pure spectral measurement. In the hyperspectral correlation imaging disclosed herein, the spectral information is encoded into the intensity correlation without requiring any spectral scanning. Even though multiple exposures (frames) are generally required to reconstruct light statistics and perform correlation measurements, the exposure times are several orders of magnitude shorter than those required in the scanning approach. In addition, no changes of the device are required during such multiple exposures, which simplifies the optics / optomechanics of the device and avoids further time consumption.

Analysis device (11, 11', 11'') for analyzing a sample substance using Raman spectroscopy, with a sample chamber (13) for receiving the sample substance, a laser system (17) for irradiating the sample substance located in the sample chamber (13) with laser light, a dispersive optical element (12, 35, 35') for spectral splitting of scattered light emanating from the irradiated sample substance, at least one detector unit (20) for receiving at least a part of the spectrally split scattered light and an electronic evaluation device (25) which is in signal communication with the at least one detector unit (20) and is configured to determine at least one Raman line (51, 52) on the basis of the scattered light received by the detector unit (20), wherein the detector unit (20) has two adjacent individual detectors (21, 22) which are configured to output respective separate signals (27), wherein the electronic evaluation device (25) is configured to take into account the signals (27) of both individual detectors (21, 22) of the detector unit (20) when determining the at least one Raman line (51, 52).

An image pickup apparatus includes an image sensor, and an optical system configured to divide light from an area extending in a first direction of an object into a plurality of lights in a section orthogonal to the first direction, and to condense the plurality of lights on an imaging surface of the image sensor. A predetermined condition is satisfied.

An optical module includes a mirror unit and a beam splitter unit. The mirror unit includes a base with a main surface, a movable mirror, a first fixed mirror, and a drive unit. The beam splitter unit constitutes a first interference optical system for measurement light along with the movable mirror and the first fixed mirror. A mirror surface of the movable mirror and a mirror surface of the first fixed mirror follow a plane parallel to the main surface and face one side in a first direction perpendicular to the main surface. The movable mirror, the drive unit, and at least a part of an optical path between the beam splitter unit and the first fixed mirror are disposed in an airtight space.

The application relates to an application of a spectrum coding device in spectrum and polarization reconstruction and a preparation method, the spectrum coding device comprises an image sensor and a plurality of composite curved surface films, the inner wall surface of the composite curved surface film is arranged towards the image sensor, the composite curved surface film comprises a first curved surface film and a second curved surface film, the inner wall surface of the second curved surface film is attached to the outer wall surface of the first curved surface film, and the refractive indexes of the first curved surface film and the second curved surface film are different; incident light is incident from the outer wall surface of the second curved surface film to form a characteristic pattern at the image sensor, and the characteristic pattern is reconstructed to obtain at least polarization information corresponding to the incident light.

In observation of a distant object with a telescope or the like, it is required to remove noise in a visible light region such as atmospheric turbulence. Although a method using SPI has been proposed as a method for removing noise due to atmospheric turbulence, the resolution of observation in the visible region is low and atmospheric turbulence has not been removed, although remote monitoring is barely possible with the current SPI.SOLUTION: In order to solve the above problem, optical signals are acquired using a DMD and a plurality of photodetectors, and in a correlation process of imaging using the optical signals, optical correlation signals are acquired from selective wavelengths of the optical signals from the plurality of photodetectors, thereby simultaneously acquiring reconstructed images in a wide wavelength band. By mounting the DMD, the plurality of photodetectors, and the correlation process of this configuration on an imaging device or a magnifying optical device, it is possible to perform imaging instead of adaptive optics for suppressing spatial noise. As a light source, a reconstructed image is acquired for a wide range of wavelengths such as visible light, infrared light, and ultraviolet light.SELECTED DRAWING: Figure 1

The invention relates to a glazing (1) for a motor vehicle comprising: - a glazed element (10) having an outer face (11) and an inner face (12); - at least one plate (80) having a body (85), the plate (80) having a housing (83) for the reversible attachment of an infrared vision system (7) having a field of view to an inner face (82) of the plate (80); - an infrared vision system (7) having a field of view and comprising a light source; - and an optical device (9) located between the light source (71) and the outer face (11) of the glazed element (10), the optical device (9) being located at a distance between the light source and the inner face (12) of the glazed element (10).

The embodiment of the present application discloses a grating spectrometer, comprising: a shell, the shell comprises an incident surface, the incident surface is provided with a mounting cavity and a light ray incidence port, the mounting cavity and the light ray incidence port are communicated; a grating device, the grating device is arranged in the mounting cavity, and the grating device is arranged opposite to the light ray incidence port; a spectral analysis element, the spectral analysis element is arranged in the mounting cavity and opposite to the grating device, and the spectral analysis element is arranged on the side of the grating device away from the light ray incidence port; and a calculation controller, the calculation controller is arranged in the shell, and the calculation controller is electrically connected with the spectral analysis element. The user can know whether the illumination light in the current environment is healthy light in real time and accurately through the judgment result, so as to help the user understand whether the current light environment is healthy, thereby avoiding the user staying in the harmful light environment for a long time, preventing the damage to the vision, and protecting the illumination health of the user.

The apparatus, system, and method include a system including a light source directed at a surface, a spectrometer configured to measure the level of light collected from the surface over time, and a controller in communication with the spectrometer, wherein the controller can be configured to identify a component of a fluid in contact with the surface based on the wavelength levels of light collected from the surface.

A spectrometer device (110) is disclosed. The spectrometer device (110) comprises: at least one filter element (114) adapted to separate at least one incident light beam into a spectrum of constituent wavelength; at least one sensor element (140) having a matrix of optical sensors (116, 142), the optical sensors (116, 142) each having a light-sensitive area, wherein each optical sensor (116, 142) is configured to generate at least one sensor signal in response to an illumination of the light-sensitive area by at least one light beam propagating from at least one object (112) to the spectrometer, wherein at least one first optical sensor of the optical sensors (116, 142) is adapted to generate a first sensor signal in response to illumination by a first constituent wavelength and wherein at least one second optical sensor of the optical sensors (116, 142) is adapted to generate a second sensor signal in response to an illumination by the first constituent wavelength; at least one evaluation device (120) configured for determining at least one longitudinal coordinate z of the object (112) by evaluating a combined signal Q from the first sensor signal and the second sensor signal, wherein the evaluation device (120) is configured for evaluating at least one sensor signal generated by the optical sensors (116, 142) of the matrix of optical sensor by performing at least one spectroscopic analysis considering the determined longitudinal coordinate z.

Provided is an ultrasensitive spectrometer. The ultrasensitive spectrometer includes a scattering medium, a light-receiving sensor disposed at a rear end of the scattering medium, a storage unit storing previously predicted speckle pattern information according to wavelengths with respect to the scattering medium, and a signal processing unit configured to process a sensing signal generated by the light-receiving sensor. The scattering medium scatters incident analyzing light to form a random speckle pattern, and the light-receiving sensor senses the speckle pattern formed by the scattering medium. The signal processing unit restores spectrum information of the analyzing light from sensing information sensed of the speckle pattern formed by the scattering medium.