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202 results about "Imaging spectrometer" patented technology

An imaging spectrometer is an instrument used in hyperspectral imaging and imaging spectroscopy to acquire a spectrally-resolved image of an object or scene, often referred to as a datacube due to the three-dimensional representation of the data. Two axes of the image corresponds to vertical and horizontal distance and the third to wavelength. The principle of operation is the same as that of the simple spectrometer, but special care is taken to avoid optical aberrations for better image quality.

Method and system for constructing near-field measured data set of marine net primary productivity

The invention belongs to the technical field of ocean water color and ocean ecology, and relates to a near-field actual measurement data set construction method and system for ocean net primary productivity, and the method comprises the steps: collecting profile data observed by a biogeochemical buoy BGC-Argo; s2, respectively performing data quality control processing on the Chl-a profile data and the bbp (700) profile data to obtain profile data after quality control; s3, based on the profile data after quality control, matching remote sensing parameters of a medium-resolution imaging spectrometer (MODIS); wherein the remote sensing parameters comprise photosynthetically active radiation (PAR) and a diffusion attenuation coefficient Kd (490) at a 490nm wave band; s4, on the basis of the profile data after quality control, PAR and Kd (490), utilizing a CbPM model to calculate marine net primary productivity NPP profile data; and S5, carrying out integration on the NPP profile data in a true light layer depth range to obtain NPP data of water column integration. The method can economically and efficiently obtain a large number of NPP samples actually measured in the near field, and makes up for the deficiency of existing actually measured data.
Owner:ZHEJIANG ACAD OF OCEAN SCI (ZHEJIANG OCEAN TECH SERVICE CENT) +1

Double-step Fabry-Perot interference snapshot imaging spectrometer

The invention relates to the field of spectral imaging, in particular to a double-step Fabry-Perot interference snapshot imaging spectrometer, which comprises a telescopic system, a micro lens array, a Fabry-Perot array interference system and an area array detector, and is characterized in that the telescopic system is used for collecting a target light field and carrying out view field limitation and collimation on the target light field; the Fabry-Perot array interference system is used for modulating a target light field into an interference light field array, the Fabry-Perot array interference system comprises two step lenses which are orthogonal in the step direction, the highest steps of the two step lenses are tightly attached, and an air gap with the thickness changing in a checkerboard-shaped two-dimensional increasing mode is formed between the two step lenses; the microlens array is used for imaging the interference light field array onto the area array detector through each imaging channel; and the area array detector is used for receiving the transmission image field of the microlens array to obtain an interference image array. The invention has the advantages of small volume, light weight, compact structure, static state, stability, reliability and the like.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI

Total primary productivity high-precision downscaling method based on multi-scale attention mechanism

The invention relates to a total primary productivity high-precision downscaling method based on a multi-scale attention mechanism, and belongs to the technical field of remote sensing. According to the method, the technical problems of fuzzy details, fuzzy boundaries and insufficient fitting precision of the existing GPP downscaling technology in a complex terrain region are solved. According to the technical scheme, an Enhanced Multi-scale Residual Attention Network (EMSRAN) model is constructed, multi-source remote sensing data including a medium-resolution imaging spectrometer (MODIS) GPP product and a terrestrial satellite auxiliary factor are integrated, data preprocessing, sample generation and model training and optimization are carried out, and a high-resolution GPP image is output. Technical effects include significant improvement of spatial detail reduction ability, enhancement of heterogeneous ecosystem adaptability, enhancement of boundary definition expression, and improvement of carbon cycle research data reliability.
Owner:CHONGQING UNIV OF POSTS & TELECOMM

Motion compensation imaging model construction method of imaging spectrometer, imaging model and device

The invention provides an imaging spectrometer motion compensation imaging model construction method, an imaging model and a device, and relates to the technical field of space remote sensing. The method comprises the following steps: establishing a satellite orbit model, and defining a plurality of coordinate systems such as a detector coordinate system and a spectrometer imaging coordinate system and a conversion relation thereof; constructing a detector-scanning mirror-lunar surface ideal geometric mapping model based on the load optical parameters and a ray tracing method; determining the relation between the rotation angle of the scanning mirror and imaging spectrum view field positioning by using a reflecting prism conjugation theory; a quantitative relation is established by combining parameters such as satellite orbits and position postures, and finally a motion compensation imaging model is established. According to the method, the influence of the on-orbit error on the compensation imaging model is analyzed, and the error is used as an uncertainty component to be coupled into the model. According to the method, the problems of low model precision, neglect of influence of orbit observation parameters on imaging and the like in the prior art are solved, high-precision motion estimation and compensation can be realized, and the quality of data acquired by an imaging spectrometer is remarkably improved.
Owner:SHANGHAI INSTITUTE OF TECHNICAL PHYSICS CHINESE ACADEMY OF SCIENCES

Interference confocal measurement system based on space coding and measurement method thereof

The invention relates to the field of optical detection, in particular to an interference confocal measurement system based on space coding and a measurement method thereof.White light generated by a light source is collimated through a first collimating lens and then divided into S polarized light and P polarized light through a polarization splitting prism, the S polarized light enters a reference plane mirror through a first quarter-wave plate, and the P polarized light enters a second quarter-wave plate; p polarized light enters a blazed grating through a second quarter-wave plate for transverse dispersion and then is changed into monochromatic polarized light with different wavelengths and the same focal length through a first achromatic lens, and the monochromatic polarized light and the monochromatic polarized light are jointly focused at the same depth position of an object to be measured. Information of the object to be measured is carried and returned to the polarization splitting prism, two beams of polarized light are combined and then focused on a target surface of a photoelectric detector of an imaging spectrometer with a mask plate through a focusing lens, an interference image of the object to be measured is obtained, and spectrum and interference analysis is carried out. According to the invention, the transverse scanning speed can be improved, the measurement time can be shortened, and the resolution can be improved.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI

A transparent flat plate two-dimensional thickness measurement system and method based on line spectrum confocal technology

The present invention discloses a transparent flat plate two-dimensional thickness measurement system and method based on line spectrum confocal technology. The light emitted by a wide spectrum linear array LED light source is transmitted to a slit through an optical fiber bundle, and then dispersed on the confocal plane through a symmetrical confocal linear dispersion mirror group. The linear light spot focused on the surface of the transparent flat plate will be reflected back and split by a line imaging spectrometer. The spectrum-distance mapping relationship is decoded by a microprocessor to obtain the thickness measurement result on the confocal line. With the help of a two-dimensional precision translation stage, the two-dimensional surface thickness measurement of a large area transparent flat plate can be achieved. This method breaks through the problems existing in the traditional spectral confocal sensor for thickness measurement and single-point thickness measurement, and has the advantages of simple measuring device, easy operation, easy integration in an automated production line, and high efficiency in two-dimensional surface thickness measurement.
Owner:SUZHOU CHUANGSHI INTELLIGENT TECH CO LTD

Slit spectral imaging method based on filtering phase reconstruction and grating spectrometer

The invention provides a slit-type spectral imaging method based on filtering phase reconstruction and a grating spectrometer. The method comprises the following steps: measuring wavefront aberration of a slit-type grating imaging spectrometer before slit filtering by using a wavefront sensor; based on a slit filtering principle, reconstructing a phase function after slit filtering by using wavefront aberration before slit filtering; and capturing a slit image, and reconstructing the slit image by using the reconstructed filtered phase function of the slit to obtain a final reconstructed image. According to the method, effective recovery of the slit imaging data of the grating spectrometer based on the slit is realized, the influence of optical aberration and image noise on the spectrum and spatial resolution of the spectrometer is effectively eliminated, and the slit imaging quality is remarkably improved and is close to the diffraction limit.
Owner:PUTIAN UNIV

Checkerboard Fabry-Perot interference snapshot imaging spectrometer

The invention relates to the field of spectral imaging, in particular to a checkerboard Fabry-Perot interference snapshot imaging spectrometer, which comprises a telescopic system, a micro-lens array, a Fabry-Perot array interference system and an area array detector, and is characterized in that the telescopic system is used for collecting a target light field and carrying out view field limitation and collimation on the target light field; the Fabry-Perot array interference system is used for modulating a target light field into an interference light field array and comprises a parallel flat plate and a checkerboard step mirror, the step height is distributed in a checkerboard-shaped two-dimensional decreasing mode, and an air gap with the thickness changing in a two-dimensional increasing mode is formed between the parallel flat plate and the checkerboard step mirror. The thickness of each area of the air gap corresponds to one optical path difference; the microlens array is used for imaging the interference light field array onto the area array detector through each imaging channel; and the area array detector is used for receiving the transmission image field of the microlens array to obtain an interference image array. The invention has the advantages of small volume, light weight, compact structure, static state, stability, reliability and the like.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI

Ultra-wide-band ultra-wide-field-of-view high-spectral-resolution real-time imaging spectrometer

The invention, which belongs to the technical field of spectral imaging, discloses an ultra-wide-band ultra-wide-field-of-view high-spectral-resolution real-time imaging spectrometer comprising a first micro-lens array, a plurality of optical fibers, a plurality of second micro-lens arrays and a plurality of assemblies. First micro lenses in each column of the first micro lens array are arranged on a vertical plane arc, and micro lenses in each row are arranged on a horizontal plane straight line, so that incident light of a one-dimensional ultra-wide view field is obtained in real time; through optical fiber coupling, incident light is transmitted to the second micro lens array to be collimated into parallel light beams; according to the components, light of different wavebands is processed through the optical filter, the plane transmission grating and the detector, first-order diffraction light beams of different wavelengths in the different wavebands are received by the detector after diffraction, and space information and spectral information are obtained in real time according to an irradiated target block. The imaging spectrometer provided by the invention has the advantages of ultra-wide wave band, ultra-wide field of view, high spectral resolution, real-time measurement, compact structure and high stability, and is suitable for a remote sensing photoelectric reconnaissance detection system.
Owner:XIDIAN UNIV

Imaging spectrometer and camera with sliding lens group

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.
Owner:KARL STORZ SE & CO KG

Flat plate type super-integrated miniature light splitting imaging system based on metasurface

The invention relates to a super-surface-based flat plate type super-integrated miniature spectral imaging system, which comprises a gold reflecting layer and a flat plate substrate reflecting layer integrated with a dispersion super-surface, a first focusing reflection super-surface, a second focusing reflection super-surface and a focusing transmission super-surface, incident light is split by the dispersion metasurface, then is reflected to the gold reflection layer, and then is sequentially focused by the two reflection metasurfaces and the transmission metasurface to be imaged on an image plane. The dispersion metasurface adopts a periodically arranged square nano-column diffraction grating structure and has stronger dispersion capability, and the other three metasurface elements are obtained by adopting phase optimization design, so that the imaging performance is excellent; the four metasurfaces are integrated on the same reflecting layer, system optics is only composed of two flat reflecting layers, wavefront regulation and control are achieved while light in a reflecting cavity is continuously reflected, the metasurface can be manufactured through the single photoetching technology, the structure is simple and compact, machining, assembling and adjusting are easy, and a new product is provided for a high-performance compact imaging spectrometer.
Owner:SUZHOU UNIV

Transmission type imaging spectrometer

The utility model provides a transmission-type imaging spectrometer. The transmission-type imaging spectrometer comprises a slit, a collimating lens group, a light splitting module, an imaging group and a detector which are arranged in sequence, the light splitting module comprises a grating and a prism; polychromatic light enters the collimating lens group through the slit, is collimated into parallel light, is projected to the grating for diffraction light splitting, then enters the prism for refraction light splitting, and is converged on the detector through the imaging group after light splitting. According to the utility model, the light transmission efficiency can be improved, aberration can be corrected, and large-area image correction can be realized.
Owner:ZOLIX ANALYTICAL INSTRUMENTS CO LTD +1

Film thickness measuring system, method and equipment and computer readable storage medium

The invention discloses a thin film thickness measurement system, method and device and a computer readable storage medium, and relates to the technical field of thin film thickness measurement, and the system comprises a light source unit which is used for transmitting an initial light source signal; the light splitting unit is arranged on a transmitting path of the initial light source signal and is used for splitting the initial light source signal into a first light source signal and a second light source signal; the imaging objective lens is arranged on an emission path of the first light source signal, a to-be-measured film is placed at a measurement position, and the imaging objective lens is used for irradiating the first light source signal onto the to-be-measured film, forming a measurement signal and returning the measurement signal; the reference signal unit is arranged on a transmitting path of the second light source signal and is used for returning a reference signal under the action of the second light source signal; and the imaging spectrometer is arranged on the reflection path of the light splitting unit and is used for determining the thickness of the to-be-measured film based on the reference signal and the measurement signal returned by the light splitting unit, so that the measurement accuracy of the film thickness is improved.
Owner:JIHUA LAB

Lens optical fiber array coupling system, chromaticity measurement system and chromaticity measurement method

The invention provides a lens optical fiber array coupling system and a chromaticity measurement system and method, and belongs to the field of chromaticity measurement, and the lens optical fiber array coupling system comprises an imaging lens which is used for obtaining incident light of an object to be measured and guiding the incident light to an array optical fiber; the end face of the array optical fiber is located on the first image plane of the imaging lens, the normal of at least part of the optical fiber end face in the array optical fiber has a deflection angle relative to the normal of the first image plane, and the deflection angle is angle deflection performed by taking the main light ray of the light received by the corresponding optical fiber position as a target reference; and the imaging spectrometer is used for receiving the light information sent by the array optical fiber. By setting the deflection angle of the array optical fiber, the effective receiving area of the optical fiber is maximized, and the change of the transmission efficiency of light of different wavebands is avoided.
Owner:WUHAN GATLING OPTICAL INSTR CO LTD +2

Crop growth monitoring integrated system

The invention belongs to the field of crop growth monitoring integrated devices, and particularly relates to a crop growth monitoring integrated system which is designed to acquire related information of a crop planting area in real time by using a soil hydrothermal salt sensor, a soil nitrogen element sensor, meteorological monitoring equipment, a ground infrared camera and an imaging spectrometer carried by an unmanned aerial vehicle. According to the technical scheme of the utility model, data information required by decisions such as watering, fertilization and pest control can be efficiently and comprehensively acquired in a large range, reasonable decisions such as watering, fertilization and pest control can be timely made, crops can be rescued, and the situation that the growth of the crops is seriously influenced can be avoided.
Owner:NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER

Natural rubber bark layer detection device based on hyperspectrum and detection method thereof

The invention relates to a natural rubber tree detection device and detection method based on a hyperspectral technology. The device comprises a walking chassis, a mechanical arm, an imaging spectrometer, a visual camera, a portable supporting holder, a laser scanning system, a data acquisition system, a data transmission module, a data processing module and a power supply system. Spectral reflection data of different layers of the bark of the rubber tree are obtained by utilizing an imaging spectrometer, efficient sampling is realized by combining laser scanning, and the data are sent to an analysis terminal through wireless transmission. Through a built-in data processing module, a spectrum separation and feature extraction technology is adopted, and a machine learning model is combined to realize prediction of bark health conditions, tree ages and plant diseases and insect pests. The device has the characteristics of portability, non-destructiveness, high efficiency and intelligence, and is suitable for tree health management and precision agricultural monitoring in natural rubber parks.
Owner:HAINAN UNIVERSITY SANYA NANFAN RESEARCH INSTITUTE

Mould type and growth stage automatic identification device and method based on microscopic hyperspectral imaging technology

The invention relates to an automatic identification device and method for mould types and growth stages. The automatic identification device is composed of a microscopic acquisition table and a hyperspectral imaging system. The microscopic acquisition table is composed of a microscopic acquisition box, a light path converter and a microscope, and microscopic information of a sample in the microscopic acquisition box is transmitted to the hyperspectral imaging system through the light path converter. The hyperspectral imaging system consists of a light source, a CCD (Charge Coupled Device) camera, an imaging spectrometer, a controller and a microprocessor, and can automatically acquire microscopic hyperspectral image information of different types of moulds in four different growth stages, namely a spore stage, a germination stage, a hypha stage and a spore production stage, and the types and the growth stages of the moulds are automatically distinguished by a recognition model. The invention further discloses a detection method corresponding to the automatic recognition device for the mold types and the growth stages. According to the invention, real-time, accurate and automatic detection of different types of moulds and various growth stages thereof is realized.
Owner:NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER

Imaging spectrometer resolution optimization method based on PGP model

The invention discloses an imaging spectrometer resolution optimization method based on a PGP model, and the method comprises the steps: respectively calculating a first emergent angle of a maximum incident angle passing through the PGP model and a second emergent angle of a minimum incident angle passing through the PGP model corresponding to a central wavelength spectral line, and determining a bending value of the central wavelength spectral line according to a difference value between the first emergent angle and the second emergent angle, and circularly calculating the angle values of the angle ranges of the first prism and the second prism according to the above steps according to a preset step length to obtain bending values of a plurality of central wavelength spectral lines, and then screening the bending values of the plurality of central wavelength spectral lines to obtain a minimum bending value. And finally, designing and manufacturing a PGP model according to the vertex angle value of the first prism and the vertex angle value of the second prism corresponding to the minimum bending value. According to the method, the condition that the top angles of the two prisms are the same can be calculated, and the condition that the top angles of the two prisms are different can also be calculated, so that the imaging spectrometer can still realize higher spectral resolution in a wider wavelength range.
Owner:XUZHOU NORMAL UNIVERSITY +1

Image Smear rapid elimination method and device for satellite load ground detection platform

According to the image Smear rapid elimination method and device for the satellite load ground detection platform, after a detection platform receives a data file of an image, a formula (12) is firstly used for calculating a Smear component of each column, operation of a formula (13) is executed, and then a true value of each pixel after Smear elimination can be obtained. Compared with a matrix elimination algorithm, the algorithm of the image Smear rapid elimination method for the satellite load ground detection platform has the advantages that the algorithm is high in operation speed by counting the operation time of a program, and the correction efficiency of the Smear effect can be greatly improved. The algorithm provided by the invention can be directly embedded into control software of a ground inspection station, and compared with a traditional offline Smear elimination algorithm, the algorithm provided by the invention can realize online real-time Smear elimination, so that technicians can conveniently correct optical and electrical parameters of an imaging spectrometer in time.
Owner:ANHUI UNIV

Parasitic image correction method for large aperture spatiotemporal joint modulation interferometric imaging spectrometer

The present invention belongs to a parasitic image correction method. In order to solve the current method of using a dimming film to block the parasitic image to reduce the influence of the parasitic image on the imaging quality, which will reduce the energy utilization rate, and it is difficult to meet the technical problem of high energy and high signal-to-noise ratio requirements when using a large-aperture spatiotemporal joint interference imaging spectrometer to obtain target information, a parasitic image correction method for a large-aperture spatiotemporal joint modulation interference imaging spectrometer is provided. Through the energy position relationship between a laser point and its corresponding parasitic image, the reflection center, reflection coefficient and parasitic image range of the interference imaging spectrometer can be accurately determined, so that the interference imaging spectrometer can accurately locate the parasitic image of its image. Then, the parasitic image correction can be completed by removing the corresponding parasitic image in the image, which provides a new idea for the parasitic image correction of the interference imaging spectrometer.
Owner:XIAN INST OF OPTICS & PRECISION MECHANICS CHINESE ACAD OF SCI

Hyperspectral imaging system

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.
Owner:CHONGQING INNOVATION CENTER OF BEIJING INSTITUTE OF TECHNOLOGY

A computed tomography spectrometer based on metasurface diffraction elements

The present invention relates to a computed tomography spectrometer based on a metasurface diffraction element. The computed tomography spectrometer includes an optical system structure, a focal plane detector, and a data acquisition and processing system; the optical system structure includes a converging lens group, a field stop, a collimating lens group, a metasurface holographic grating, and an imaging lens group. The present invention combines a metasurface with a computed tomography spectrometer, which can avoid the manufacturing difficulties of the computed tomography spectrometer, miniaturize the computed tomography spectrometer, and produce a better diffraction effect, so that the focal plane array target surface and the overall size of the spectrometer are both in the millimeter range, and can realize an imaging spectrometer with a mobile phone terminal or even smaller structure.
Owner:CAIPU TECHNOLOGY (ZHEJIANG) CO LTD

Line laser array type optical fiber multipoint Raman spectrum acquisition system

The invention belongs to the technical field of Raman signal detection, and particularly discloses a line laser array type optical fiber multipoint Raman spectrum acquisition system which comprises a line laser conversion unit, a scattered light imaging unit, an optical fiber array unit and an imaging spectrometer which are sequentially arranged along a light path, wherein the line laser conversion unit is used for converting a received laser beam into line laser and outputting the line laser to an object to be measured to excite Raman scattering; the scattered light imaging unit is used for collecting Raman scattered light generated by an object to be measured, converting the Raman scattered light into a linear image and coupling the linear image into the input end of the optical fiber array unit; the output end of the optical fiber array unit is connected with the imaging spectrometer; and the imaging spectrometer is used for synchronously analyzing signal spectrums at different positions on the linear image. According to the invention, a line laser technology, an optical fiber array technology and a Raman spectrum acquisition technology are combined, multi-point synchronous excitation Raman scattering and multi-point batch acquisition and analysis are realized, and compared with existing Raman spectrum acquisition and detection equipment, the device is faster and more efficient.
Owner:HUAZHONG UNIV OF SCI & TECH

Multi-source target detection device

The utility model discloses a multi-source target detection device, and relates to the field of spectral detectors, a hyperspectral imaging module comprises a movable imaging lens protruding out of a mounting shell, an imaging spectrometer communicated with the imaging lens, and a detector mounted at the output part of the imaging spectrometer; the RGB camera and the imaging lens are located in the same acquisition direction, and a lens of the RGB camera is embedded into the surface of the shell to acquire an RGB image; the push-sweeping module is mounted on the inner wall of the mounting shell and comprises a driving motor, a sliding rail and a push-sweeping platform; the push-broom platform is mounted on the slide rail, the imaging lens is embedded in a mounting hole of the push-broom platform, and light enters through a slit at the entrance of the spectrometer; the push-scan platform is controlled based on the driving motor and moves along the sliding rail, and a hyperspectral image is obtained through push-scan. According to the scheme, the problems of poor precision and difficulty in correction of aircraft push-scan imaging are solved through the built-in push-scan module, and image type diversification is realized through the built-in multifunctional camera module.
Owner:SICHUAN DUALIX SPECTRAL IMAGING TECHNOLOGY CO LTD

A full polarization spectral imaging device and detection method

The application discloses a kind of full polarization spectral imaging device and detection method, contain sequentially arranged polarization modulator, imaging spectrometer, data acquisition processing display system to incident light;Polarization modulator is single fixed retarder and single fixed linear polarizer sequentially arranged along incident light, can carry out spectral modulation to full stokes parameter, it has the superiority of simple, ultra-compact, miniaturization, anti-system error in structure.By constructing complete imaging physical model or constructing imaging physical model based on compressed sensing, then using untrained artificial neural network realizes the full stokes parameter image reconstruction under each narrow waveband, and the deep neural network of "black box operation" is endowed with physical meaning.The reconstructed polarization spectral resolution can be consistent with the resolution of the imaging spectrometer used;And it has the characteristics of strong anti-noise ability, so as to ensure high-quality reconstruction.
Owner:CAIPU TECHNOLOGY (ZHEJIANG) CO LTD

Adjustable filter based on temperature change characteristics

The invention provides an adjustable filter based on temperature change characteristics according to the problem of traditional filtering limitation, and relates to the technical field of filter design in imaging spectrometers. According to the adjustable filter provided by the invention, the temperature is taken as an independent variable, and the change of the transmissivity of the thermally induced phase change material in the phase change temperature interval is converted into the change of the transmission spectrum of the interference film along with the temperature, so that the adjustable function of the filter is realized. Through a temperature-transmissivity spectrum mapping relation, continuous spectrum tuning without mechanical motion and with low power consumption is realized, and an innovative filtering solution is provided for an imaging spectrometer. Meanwhile, the filter regulation and control function is achieved, meanwhile, the temperature change transmission spectrum characteristic meets the requirement of spectrograph inversion, that is, original data of spectrum inversion is provided for transmissivity spectrums at different temperatures, and therefore the invention further provides a spectrum inversion method. The method can be applied to the technical fields of environment monitoring, medical diagnosis, intelligent manufacturing and the like.
Owner:HARBIN INST OF TECH

Global optical path adjusting device and adjusting method for correction lens group of solar imaging spectrometer

The application discloses a kind of global light path adjusting devices and adjusting methods of correction lens group for solar imaging spectrometer, including correction lens group and adjustment shim, the front end of correction lens group is formed as first reference surface, the rear end of correction lens group is formed as second reference surface;The first reference surface of correction lens group is used as the reference of off-axis three-mirror optical system of global light path system of solar imaging spectrometer;The second reference surface of correction lens group is used as the reference of spectral scanning imaging system of global light path system of solar imaging spectrometer.The adjusting device and method of the application utilize the design of the form of self connection interface and the introduction of adjusting reference, reduce the difficulty of angle adjusting of lens group by means of external reference mirror in the prior art, can quickly and accurately connect the optical system of front end and rear end, ensure that the imaging quality of imaging spectrometer optical system is optimal.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI

A catadioptric shortwave infrared imaging spectrometer

This invention provides a catadioptric shortwave infrared imaging spectrometer, comprising, in order of light incidence, an entrance slit, a plane mirror, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, a grating, and an imaging sensor. The plane mirror, together with the upper portions of the first, second, third, fourth, fifth, sixth, and seventh lenses, forms a collimation system. The grating, together with the lower portions of the seventh, sixth, fifth, fourth, third, second, and first lenses, and the imaging sensor, together form an imaging system. Collimation and imaging share a single lens group, resulting in a compact structure, easier aberration correction, simpler assembly and adjustment, better image quality, lower tolerance sensitivity, and reduced assembly difficulty.
Owner:CHONGQING PUSIDA TECH CO LTD

Imaging spectrometer monochromator convenient to install and adjust

The utility model discloses an imaging spectrometer monochromator convenient to install and adjust, which relates to the technical field of optical instruments and comprises a fixed bottom plate, and an entrance slit group, a collimation imaging light path group, a grating group, a focusing imaging light path group and a detector assembly which are fixed on the fixed bottom plate and are sequentially distributed on a light path, the entrance slit group is connected to the fixed bottom plate through the slit adjusting plate; the collimation imaging light path group and the focusing imaging light path group are arranged on the fixed bottom plate through the support adjusting assembly; the grating group is connected to the fixed bottom plate through a grating adjusting plate; and each component can be finely adjusted. The assembling and adjusting operation is simpler, more convenient and faster, and the consistency, the reliability and the production efficiency are improved.
Owner:HEBEI PORT GRP TESTING TECH CO LTD

Polarization hyperspectral imaging system, imaging method and application

The invention relates to the field of remote sensing detection imaging systems, in particular to a polarization hyperspectral imaging system, an imaging method and application, and the system comprises a housing, an imaging lens, an imaging spectrometer, an area array polarization camera, a focusing translation assembly, a push-broom translation assembly and a processor. A mounting hole is formed in one side wall of the shell; the imaging lens is fixed on the casing through the mounting hole and extends out of the casing; an imaging spectrometer and an area array polarization camera are sequentially arranged in the machine shell from the imaging lens to the back, and the imaging spectrometer is connected with the area array polarization camera. The focusing translation assembly is arranged in the shell, the push-broom translation assembly is arranged on the focusing translation assembly, and the imaging spectrometer is arranged on the push-broom translation assembly; the processor is arranged in the machine shell and connected with the area array polarization camera, the focusing translation assembly and the push-broom translation assembly, and the processor is connected with an electronic output interface.
Owner:SICHUAN DUALIX SPECTRAL IMAGING TECHNOLOGY CO LTD