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34results about How to "Realize simultaneous detection" patented technology
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Multiple shaft differential optical absorption spectrometry method and apparatus for detecting vertical distribution of atmospheric composition
ActiveCN101109699ARealize simultaneous detectionImplement scan adjustmentsColor/spectral properties measurementsFiberAtmospheric composition
The invention discloses a multiaxis differential spectrum absorbing method and device for vertically distribution detection of atmospheric components. Wherein, a plurality of telescopes are arranged to observe the space from the ground in different angles of pitch, so as to detect and collect sun lights scattered by the atmosphere; the surfaces of the telescopes' lens cones are blackened to reduce stray light, the scattered sun light is converged at the ends of optic fibers after passing the lens and light filters in the telescopes; the optic fibers at the tail ends of the telescopes are combined and guide the scattered sun lights into the incident slit of an imaging spectrometer, which first disperses the scattered sun lights, and then concentrate them on a photosensitive surface of a face array imaging CCD detector; the spectral signals go through data analysis and treatment after A / D conversion and inputting into a computer. The invention is applicable for chemical research of atmosphere, provides input data and model verification for chemical model of atmosphere; and is applicable for verifying the results of atmospheric components detected by a satellite.
Owner:无锡中科光电技术有限公司
Coding vibration and voice prompt blind guiding method and apparatus based on multi-frequency modulation
InactiveCN102988155ARealize simultaneous detectionShorten the timeWalking aidsEye treatmentWireless transmissionConstant frequency
The invention discloses a coding vibration and voice prompt blind guiding method and apparatus based on a multi-frequency modulation. The apparatus comprises a voice prompt module, a vibration prompt watch, a humidity sensor module, a temperature sensor module, a clock module, a control module, a wireless transmission module, an ultrasonic transmitting module, an ultrasonic receiving module, a global positioning system (GPS) module and a power supply module. The coding vibration and voice prompt blind guiding apparatus based on the multi-frequency modulation disclosed by the invention adopts multi-frequency ultrasonic simultaneous detection and phased array beam forming technologies as well as multi-mode prompt, and transmits a constant frequency wave, a first frequency-modulated wave and a second frequency-modulated wave to simultaneously detect far-distance, medium-distance and short-distance barriers; and the blind guiding apparatus further changes the detection direction through the phased array beam forming technology, so that the apparatus can automatically scan at various directions, and the apparatus can prompt user barriers from touch and hearing through the vibration prompt watch and the voice. And the blind guiding apparatus can effectively improve accuracy and realtime performance of detection, and is abundant in functions and convenient for operation.
Owner:SOUTH CHINA UNIV OF TECH
Dual trapezoidal wave transmitting system with controllable falling edge and control method
ActiveCN108227011ARealize simultaneous detectionImprove detection accuracyEfficient power electronics conversionElectric/magnetic detectionLow voltageEngineering
The invention relates to the field of transient electromagnetic emission, in particular to a dual trapezoidal wave transmitting system with a controllable falling edge and a control method. The systemcomprises a main control circuit, an optocoupler drive circuit, a transmitting bridge circuit, a high voltage transient suppression diode, a low voltage transient suppression diode circuit, a seriesbattery pack and a transmitting coil, wherein the main control circuit is connected with the transmitting bridge circuit through the optocoupler drive circuit, and the transmitting bridge circuit andthe transmitting coil are connected; the series battery pack is connected with the transmitting bridge circuit to provide power for transmission, and the high voltage transient suppression diode and the low voltage transient suppression diode circuit are connected in parallel at both ends of the transmitting coil. The system can simultaneously generate a set of trapezoidal wave emission current with different turning-off time, the current can be used for stimulating and measuring induction field signals and polarization response respectively, and the system achieves two-parameter simultaneousdetection of electrical resistivity and polarizability, and improves detection precision.
Owner:JILIN UNIV
Laser frequency shift detecting method and device with dual-cavity F-P interferometer which is formed on the basis of polarization maintaining optical fibers
ActiveCN104111463ARealize simultaneous detectionImprove signal-to-noise ratioElectromagnetic wave reradiationErbium dopingPolarization-maintaining optical fiber
The invention discloses a laser frequency shift detecting method and device with a dual-cavity F-P interferometer which is formed on the basis of polarization maintaining optical fibers. The device comprises a laser device, an acoustic optical modulator (AOM), an erbium-doped optical fiber amplifier (EDFA), quarter-wave plates, a collimator, a telescope, a first polarization maintaining optical fiber, a first circulator, a first narrow-band fiber bragg grating (FBG), a polarization controller (PC), an optical fiber F-P interferometer, an F-P interferometer controller, a polarization beam splitter (PBS), a first single photon counting module (SPCM), a second SPCM, a second polarization maintaining optical fiber, a second circulator, a second narrow-band FBG, a third SPCM and an acquisition card. According to the laser frequency shift detecting method and device with the dual-cavity F-P interferometer which is formed on the basis of the polarization maintaining optical fibers, a laser radar fiber integrated single-emission double-receiving light path is developed, two receiving optical fibers are spliced in the same cladding to form a dual D involution optical fiber, separation of energy detection and frequency shift detection is achieved, the signal to noise ratio of the frequency shift detection is increased, a dual-edge detection technology can be successfully achieved only by the single-channel F-P interferometer, the energy utilization ratio is high, and the method is simple.
Owner:UNIV OF SCI & TECH OF CHINA
Human body blood vessel detecting method based on laser photoacoustic spectrometry
The invention discloses a human body blood vessel detecting method based on laser photoacoustic spectrometry. The method includes the steps of system initial positioning, single-point testing, time domain distinguishing photoacoustic positioning and analyzing, photoacoustic single-point blood vessel measuring, profile atheromatous plaque component analyzing and photoacoustic three-dimensional blood vessel reestablishing. The method has the advantages that a light source and part of light path are reused in laser photoacoustic and laser Raman, the size and cost of a system are reduced, photoacoustic echo signals corresponding to blood flow, blood vessel inner tissue and blood vessel wall layered substances passing through a main axis route at the same moment can be analyzed through time domain distinguishing photoacoustic echo signal analysis with the blood flow photoacoustic echoes in blood vessels as the space analysis standard, the external morphology of the blood vessels and the form distribution of the inner tissue can be detected at the same time through photoacoustic, and all the blood vessel wall layered substance molecular components can be detected through the combinationof photoacoustic and laser Raman.
Owner:SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
Ultraviolet/infrared double-color detector based on boron nitride
ActiveCN110649108ARealize simultaneous detectionEasy to makeSemiconductor devicesUltraviolet detectorsUltraviolet lights
An ultraviolet / infrared double-color detector based on boron nitride belongs to the technical field of semiconductor photoelectric detectors. The problems as follows are solved: an ultraviolet / infrared double-color detector in the prior art cannot achieve efficient ultraviolet and infrared detection and is limited by low temperature in application, the raw materials are toxic, preparation is tedious, and a large number of pollutants are inevitably introduced in preparation. The double-color detector is composed of a substrate, an ultraviolet detector epitaxial layer and an infrared detector epitaxial layer. The ultraviolet detector epitaxial layer is of a continuous layer structure, is fixed to the upper surface of the substrate and is made of three-dimensional boron nitride. The infrareddetector epitaxial layer is of a continuous layer structure or a patterned structure, is fixed to the upper surface of the ultraviolet detector epitaxial layer, and is made of two-dimensional boron nitride. The double-color detector realizes simultaneous detection of ultraviolet light and infrared light by utilizing the intrinsic ultraviolet absorption performance of the three-dimensional boron nitride and the phonon polarization infrared absorption performance of the two-dimensional boron nitride. The detector is not limited by low temperature in use, and is safe, environment-friendly and easy to prepare.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
Human blood vessel detection system based on laser photoacoustic spectrometry
The invention discloses a human blood vessel detection system based on laser photoacoustic spectrometry. The system is mainly composed of a main controller, a scanning head portion, a three-dimensional electric platform and an assistant part. The system has the advantages that laser photoacoustic and laser Raman multiplex a light source and part of light path, so that size and cost of the system are reduced; blood flow photoacoustic echo in blood vessels is taken as a spatial analysis standard, and time domain resolution photoacoustic echo signal analysis is adopted, so that blood flow penetrating a main axis path at a same moment, vascular inside tissue and photoacoustic echo signal corresponding to each layering substance of vascular wall can be analyzed out, and detection of photoacoustic to outside morphology and inside tissue form distribution of blood vessel at the same time can be realized; photoacoustic combined with laser Raman can realize molecular ingredient detection of each layering substance of the vascular wall.
Owner:SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
Asymmetric spatial heterodyne spectrometer structure
The invention discloses an asymmetric spatial heterodyne spectrometer structure, which comprises an incident diaphragm, a collimator objective, a blazed grating, an interference module integrated by prisms, an imaging lens and an array type detector, wherein the interference module integrated by the prisms is a core part of the spectrometer structure, and is formed by a right trapezoid prism and an isosceles triple prism. Incident light is diffracted through the grating so as to enter the interference module, and is divided into two light beams through a beam splitting interface so as to be reflected by a plane mirror and a porro prism in the interference module respectively, so that non-equal optical path space interference of the two light beams is realized. The asymmetric spatial heterodyne spectrometer structure provided by the invention only needs one grating, has the advantages of simple light path, convenience in adjustment, high spectral resolution and the like since the interference module is integrated by the prisms, can be beneficial to effectively improving the integration level and the stability of a system, and has a wide application prospect in the multi-spectral line high-precision doppler velocity measurement field.
Owner:INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
Miniature bifocus objective lens probe
ActiveCN103149678ARealize simultaneous detectionAid in early detectionSurgeryMicroscopesFiber bundlePupil
The invention relates to a miniature bifocus objective lens probe for a confocal endoscopic microscope, belonging to the technical field of optics. The miniature bifocus objective lens probe comprises a miniature bifocus microobjective group and an imaging optic fiber bundle, wherein the imaging optic fiber bundle is arranged in front of the miniature bifocus microobjective group. The pupil of the miniature bifocus microobjective group is at infinity, has a bifocus imaging capability and can be used for simultaneously imaging a superficial layer and a deep layer of a sample. The numerical aperture of the miniature bifocus microobjective group at the optical fiber bundle end is matched with that of single optical fiber of the imaging optical fiber bundle. According to the miniature bifocus objective lens probe, the size is limited within a range that the miniature bifocus objective lens probe can enter the human body through a conventional endoscope working channel, light is focused on two focal planes with different depths, and fluorescent light generated by the focal planes is collected and then returned into a confocal endoscopic imaging system.
Owner:HUAZHONG UNIV OF SCI & TECH
Space debris observation method based on alternating of different exposure times of CCD camera
ActiveCN110399866ARealize simultaneous detectionIncrease success rateImage enhancementImage analysisCcd cameraOrbit
The invention discloses a space debris observation method based on alternating of different exposure times of a CCD camera. The space debris observation method comprises the steps: controlling the CCDcamera to continuously carry out the alternate collection of short exposure images and long exposure images according to the given exposure time; by processing odd frames of short-exposure images, realizing detection and astronomical positioning of low, medium and high orbit space debris; by processing the even-frame-length exposure images, detecting medium-high orbit space debris, and meanwhileachieving astronomical positioning of the medium-high orbit space debris detected by the current frame through negative film model coefficients of the front-back adjacent odd-frame images; and in a search observation mode, through a multipoint adjustment method and negative film model coefficients of adjacent odd frames, realizing precise astronomical positioning of low, medium and high orbit space debris. The space debris observation method realizes simultaneous detection and precise astronomical positioning of all-orbit space debris, improves the observation efficiency of observation equipment, and guarantees the measurement precision of the observation equipment for the all-orbit space debris.
Owner:ZIJINSHAN ASTRONOMICAL OBSERVATORY CHINESE ACAD OF SCI
Structured light illumination multi-focal-plane three-dimensional super-resolution imaging system
InactiveCN110823372ARealize simultaneous detectionFast imagingRaman/scattering spectroscopyRadiation pyrometryTarget surfaceImage resolution
The invention discloses a structured light illumination multi-focal-plane three-dimensional super-resolution imaging system, which comprises an exciting light modulation module, a microscopic amplification module and a multi-focal-plane imaging module, wherein the multi-focal-plane imaging module comprises a focus increasing and light splitting assembly and a fluorescence detector; and the focus increasing and light splitting assembly is used for equally dividing a fluorescence signal into multiple beams of signal light with different propagation directions and focusing degrees, so that the multiple beams of signal light form images with different focal planes at different positions of a target surface of the fluorescence detector, thereby realizing simultaneous detection of multi-focal-plane images, and acquiring three-dimensional structure information of an object. Compared with traditional structured light illumination three-dimensional super-resolution imaging, the structured lightillumination multi-focal-plane three-dimensional super-resolution imaging system does not need to move a sample, so that the imaging speed is greatly accelerated, and a powerful technical means is provided for research on a three-dimensional structure of a living body sample.
Owner:INSITUTE OF BIOPHYSICS CHINESE ACADEMY OF SCIENCES
Method for simultaneously detecting frequency detector in direct wind finding laser radar system in high altitude and low altitude
ActiveCN104076344AGuaranteed StrengthIncrease profitFluid speed measurementElectromagnetic wave reradiationRayleigh scatteringRayleigh Light Scattering
A method for simultaneously detecting a frequency detector in a direct wind finding laser radar system in the high altitude and the low altitude includes the following steps of firstly, designing an improved Fabry-Perot etalon, wherein the improved Fabry-Perot etalon is composed of two parallel glass plates and provided with five channels which include two Mie scattered signal channels, two Rayleigh scattered signal channels and one laser frequency locking channel, namely, the channel L; secondly, selecting appropriate etalon parameters so that the requirements that the transmittance curve of the two Mie scattered signal channels is consistent with the transmittance curve of an optimized Mie scattered signal detection etalon, the transmittance curve of the two Rayleigh scattered signal channels is consistent with the transmittance curve of an optimized Rayleigh scattered signal detection etalon, the locking channel L has an effect on tracking both the relative laser frequency of the scattered signal channels R1 and the relative laser frequency of the scattered signal channels R2, and the detection height, especially the strength of Rayleigh backscattered signals, is ensured can be met.
Owner:UNIV OF SCI & TECH OF CHINA
Lithium tantalate narrow-band gas detector and preparation method thereof
InactiveCN108267482ASimple preparation processLow costMaterial analysis by electric/magnetic meansWavelength selectivityPhysics
The invention discloses a lithium tantalate narrow-band gas detector and a preparation method thereof, and belongs to the field of gas detection. The lithium tantalate narrow-band gas detector sequentially comprises a lower electrode, a lithium tantalate wafer, a gold back plate, a dielectric layer and an antenna array from bottom to top, wherein the antenna array comprises a plurality of antennasdistributed in an array manner and is used for absorbing light, the dielectric layer is used for making the absorbed light resonate so as to obtain electromagnetic energy, the gold back plate is usedfor converting the electromagnetic energy into Joule heat, the lithium tantalate wafer is used for absorbing the Joule heat to release positive and negative charges, the lower electrode is used for absorbing the negative charges, the gold back plate is used for absorbing the positive charges, and the detector obtains electrical signals according to the positive and negative charges so as to detect the concentration and the type of the gas according to the electrical signals. The lithium tantalate narrow-band gas detector of the present invention has advantages of wavelength selectivity, detection of a variety of gases, and low cost and easy packaging during the simultaneous detection of a variety of gases.
Owner:HUAZHONG UNIV OF SCI & TECH
Marine temperature-salinity-depth sensing head based on hollow micro-cavity and manufacturing method thereof
The invention discloses a marine temperature-salinity-depth sensing head based on a hollow micro-cavity and a manufacturing method thereof. The marine temperature-salinity-depth sensing head comprisesa tapered optical fiber (1), a hollow microsphere cavity (2), a hollow thin-wall micro-tube cavity (5), a hollow thick-wall micro-tube cavity (12) and a sensing head base body (14), wherein the tapered optical fiber (1) is provided with three tapered areas; the three conical areas are respectively and vertically contacted with one sides of the hollow microsphere cavity (2), the hollow thin-wall micro-tube cavity (5) and the hollow thick-wall micro-tube cavity (12); and the hollow microsphere cavity (2), the hollow thin-wall micro-tube cavity (5) and the hollow thick-wall micro-tube cavity (12) are fixed in the sensing head base body (14) to form a temperature sensing module, a salinity sensing module and a depth sensing module which are fixedly packaged in the sensing head base body (14).Compared with the prior art, based on the hollow micro-cavity echo wall resonant mode, by demodulating the movement of the central wavelength of the resonant peak in the three groups of transmissionspectrograms, the simultaneous detection of high-sensitivity ocean temperature, salinity and depth can be realized.
Owner:TIANJIN UNIV
CMOS technology multi-frequency metamaterial absorption structure based terahertz microbolometer
InactiveCN109443550ARealize simultaneous detectionPyrometry using electric radation detectorsCMOSMicrobolometer
The invention discloses a CMOS technology multi-frequency metamaterial absorption structure based terahertz microbolometer. The terahertz microbolometer includes a silicon substrate made by adopting astandard 55nmCMOS technology; the silicon substrate is provided with a multi-frequency metamaterial absorption structure which can simultaneously receive electromagnetic waves in three frequency bands, and a PTAT temperature sensing circuit which can receiving the output signal of the multi-frequency metamaterial absorption structure; and the output end of the PTAT temperature sensing circuit canform the output end of the terahertz microbolometer. To form the terahertz microbolometer by combining the CMOS technology based multi-frequency metamaterial absorption structure with the novel PTATtemperature sensing circuit is realized for the first time; the multi-frequency metamaterial absorption structure can be used to receive the electromagnetic waves with different frequencies so that electromagnetic energy can be converted into heat; and the heat can be converted into an output electric signal through the PTAT temperature sensing circuit, so that the simultaneous detection of terahertz signals in three frequency bands which are 910 GHz, 2.58 THz and 4.3 THz can be realized, and therefore, an effective method for multi-frequency terahertz heat detection can be obtained.
Owner:TIANJIN UNIV
LCD driver board automatic detection method and system
ActiveCN105931590AReduce labor costsRealize simultaneous detectionStatic indicating devicesLiquid-crystal displaySystem identification
The invention provides an LCD driver board automatic detection method and system, and relates to the electronic field. The LCD driver board automatic detection system comprises an upper die, a lower die, cylinders, an industrial control computer, an image acquisition card, a signal generation plate and a circuit main board. The circuit main board is used for controlling the cylinders to move up and down; the cylinders are arranged above the upper die, and are used for driving the upper die to rise or fall; the lower die is arranged under the upper die, and is used for fixing an LCD driver board under detection; and the bottom surface of the upper die is equipped with a code scanner, probes, micropins and locating pins, wherein the code scanner is used for scanning a bar code of the LCD driver board under detection to help the system to identify the LCD driver board under detection, and the locating pins are used for realizing positioning with the position of the lower die in the pressing-down process of the upper die. The advantages are that the system and method are low in human cost, high in work efficiency, small in detection error and low in error rate; and a liquid crystal display screen is not easy to burn.
Owner:深圳市海达唯赢科技有限公司
Dayglow temperature photometer and method thereof for detecting airglow spectrum intensity and temperature
InactiveCN103292902BRealize simultaneous detectionImprove detection accuracySpectrum investigationThermometers using physical/chemical changesGratingLuminous intensity
The invention provides a dayglow temperature photometer and a method thereof for detecting airglow spectrum intensity and temperature. An echelon grating and a narrow-band interference filter are organically combined to serve as a core device of the dayglow temperature photometer, and luminous intensity and temperature of dayglows in an upper atmosphere are detected simultaneously by utilizing a high-resolution spectroscopic method and a rotational spectral-line temperature-measuring method. The dayglow temperature photometer comprises four portions including a light guide system, a telescopic system, a light splitting system and an imaging system which are sequentially arranged.
Owner:NANJING UNIV OF INFORMATION SCI & TECH
Grid-controlled graphene-based ultraviolet-to-near infrared InGaAs detector chip
InactiveCN108899378AHigh photocurrent signal gainWide response spectrumSemiconductor devicesPhysicsWave band
The invention belongs to the technical field of detector chips and particularly relates to a grid-controlled graphene-based ultraviolet-to-near infrared InGaAs detector chip. According to the invention, a InP contact layer, a InGaAs absorption layer, a silicon oxide (SiO2) medium layer, a graphene layer, a source electrode metal electrode, a drain electrode metal electrode and a grid electrode metal electrode are successively arranged on a InP substrate. The chip is advantageous in that on one hand, by using a grid-controlled interface field to separate photon-generated carriers, and sensing inversion type carriers in the graphene, spectrum detection is achieved; on the other hand, the graphene is free from energy gap and quite high in optical permeability; the InGaAs materials are capableof absorbing light of the 1.7[mu]m to ultraviolet wave band, so by use of the detector, detection from the ultraviolet to near infrared waveband can be achieved; and in addition, the graphene has quite high migration rate and carrier transmission characteristics, so the detector is enabled to have quite high quantum gain characteristics.
Owner:FUDAN UNIV
Multi-specified-height CCD imaging system and method based on trapezoidal lens
ActiveCN111796302ASolve the problem that the angle accuracy is difficult to guarantee accuratelyRealize OKElectromagnetic wave reradiationICT adaptationLaser transmitterEngineering
The invention relates to the field of atmospheric optical detection and optical imaging, and in particular relates to a multi-specified-height CCD imaging system and method based on a trapezoidal lens. The system comprises a laser transmitter and a receiving device, the receiving device comprises a receiving telescope and a CCD camera, and the receiving telescope comprises a trapezoidal lens; laser emitted by the laser emitter is reflected by the trapezoidal lens, and reflected light is captured by the detection end of the CCD camera; the trapezoidal lens is composed of n rectangular lenses, the reflecting surfaces of the rectangular lenses are plated with high-reflectivity films, the rectangular lenses are arranged in a stepped manner, and n is greater than or equal to 2. According to theinvention, the problem that in an original DCIM detection scheme, in order to enable a CCD detection surface to coincide with a focal plane formed for the height, when the CCD detection surface needsto be obliquely placed at a specific angle, the angle precision is difficult to accurately guarantee is solved.
Owner:HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
A laser frequency shift detection method and device based on a polarization-maintaining fiber forming a dual-cavity f-p interferometer
ActiveCN104111463BRealize simultaneous detectionImprove signal-to-noise ratioElectromagnetic wave reradiationErbium dopingPolarization-maintaining optical fiber
The invention discloses a laser frequency shift detecting method and device with a dual-cavity F-P interferometer which is formed on the basis of polarization maintaining optical fibers. The device comprises a laser device, an acoustic optical modulator (AOM), an erbium-doped optical fiber amplifier (EDFA), quarter-wave plates, a collimator, a telescope, a first polarization maintaining optical fiber, a first circulator, a first narrow-band fiber bragg grating (FBG), a polarization controller (PC), an optical fiber F-P interferometer, an F-P interferometer controller, a polarization beam splitter (PBS), a first single photon counting module (SPCM), a second SPCM, a second polarization maintaining optical fiber, a second circulator, a second narrow-band FBG, a third SPCM and an acquisition card. According to the laser frequency shift detecting method and device with the dual-cavity F-P interferometer which is formed on the basis of the polarization maintaining optical fibers, a laser radar fiber integrated single-emission double-receiving light path is developed, two receiving optical fibers are spliced in the same cladding to form a dual D involution optical fiber, separation of energy detection and frequency shift detection is achieved, the signal to noise ratio of the frequency shift detection is increased, a dual-edge detection technology can be successfully achieved only by the single-channel F-P interferometer, the energy utilization ratio is high, and the method is simple.
Owner:UNIV OF SCI & TECH OF CHINA
Miniature bifocus objective lens probe
ActiveCN103149678BRealize simultaneous detectionAid in early detectionSurgeryMicroscopesFiber bundlePupil
The invention relates to a miniature bifocus objective lens probe for a confocal endoscopic microscope, belonging to the technical field of optics. The miniature bifocus objective lens probe comprises a miniature bifocus microobjective group and an imaging optic fiber bundle, wherein the imaging optic fiber bundle is arranged in front of the miniature bifocus microobjective group. The pupil of the miniature bifocus microobjective group is at infinity, has a bifocus imaging capability and can be used for simultaneously imaging a superficial layer and a deep layer of a sample. The numerical aperture of the miniature bifocus microobjective group at the optical fiber bundle end is matched with that of single optical fiber of the imaging optical fiber bundle. According to the miniature bifocus objective lens probe, the size is limited within a range that the miniature bifocus objective lens probe can enter the human body through a conventional endoscope working channel, light is focused on two focal planes with different depths, and fluorescent light generated by the focal planes is collected and then returned into a confocal endoscopic imaging system.
Owner:HUAZHONG UNIV OF SCI & TECH
Ground-air short-offset electromagnetic detection system, multi-source emission signal separation method
ActiveCN111257951BRealize large depth and high resolution detectionEconomical and flexible multi-component observationElectric/magnetic detectionAcoustic wave reradiationEngineeringObservation system
The invention belongs to the field of geophysical exploration, and particularly relates to a ground-air short-offset electromagnetic detection system and a multi-source emission signal separation method. The system comprises a transmitting system and an observation system, wherein the transmitting system comprises one or more transmitting devices which are arranged on the ground and are based on along grounding wire source; the observation system comprises a plurality of observation devices; each observation device comprises flight equipment, a single-component magnetic field sensor and a receiver; the number of the observation devices used for collecting single-component magnetic field data is larger than that of the transmitting devices; a plurality of observation devices carry out flight observation in a set observation area according to a preset formation to obtain a plurality of corresponding groups of observation signals; the set observation area is that the distance from any point to each transmitting device is smaller than N times of the to-be-detected depth, and N is a set value. Economic and flexible multi-component observation is realized, and more possibilities are provided for high-resolution, economic and rapid detection and underground structure information extraction of a deep large ore deposit.
Owner:INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
A UV/IR dual-color detector based on boron nitride
ActiveCN110649108BRealize simultaneous detectionEasy to makeSemiconductor devicesUltraviolet detectorsBoron nitride
The invention relates to a boron nitride-based ultraviolet / infrared dual-color detector, which belongs to the technical field of semiconductor photodetectors. It solves the problems that the ultraviolet / infrared dual-color detector in the prior art cannot realize efficient ultraviolet and infrared detection, is limited by low temperature applications, has toxic raw materials, cumbersome preparation, and inevitably introduces a large amount of pollutants during preparation. The two-color detector of the present invention is composed of a substrate, an epitaxial layer of an ultraviolet detector and an epitaxial layer of an infrared detector. The epitaxial layer of the ultraviolet detector is a continuous layer structure, fixed on the upper surface of the substrate, and the material is three-dimensional boron nitride. The infrared detector epitaxial layer has a continuous layer structure or a patterned structure, is fixed on the upper surface of the ultraviolet detector epitaxial layer, and is made of two-dimensional boron nitride. The two-color detector uses the intrinsic ultraviolet absorption performance of three-dimensional boron nitride and the phonon polarized infrared absorption performance of two-dimensional boron nitride to realize simultaneous detection of ultraviolet and infrared. The use of this detector is not limited by low temperature, and it is safe and environmentally friendly , The preparation is simple.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
An Asymmetric Spatial Heterodyne Spectrometer Structure
ActiveCN106352985BSimple structureImprove stabilityInterferometric spectrometryGratingBeam splitting
Owner:INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
Single-pixel infrared and visible light dual-band sensor and array
InactiveCN111192890ASimple preparation processGood for focal planeSolid-state devicesPhotometry using electric radiation detectorsMaterial growthSensor array
The invention discloses a single-pixel infrared and visible light dual-waveband sensor. The sensor comprises an upper photosensitive component, a bridge column, a visible light photosensitive component and a silicon substrate, wherein the upper layer photosensitive assembly is installed above the silicon substrate through the bridge column, and the visible light photosensitive assembly is arrangedon the upper surface of the silicon substrate; a light-transmitting through hole is formed in the upper-layer photosensitive assembly, and the visible light photosensitive assembly is located under the light-transmitting through hole. The invention further discloses a single-pixel infrared and visible light dual-band sensor array. According to the single-pixel infrared and visible light double-waveband sensor and the array, visible light and infrared double wavebands can be detected at the same time in a single pixel, and target information is richer. Meanwhile, material growth and device manufacturing processes are simple, and focal planarization of the device is facilitated.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
A three-color detector and its manufacturing method
ActiveCN112928178BRealize simultaneous detectionAccurate detectionFinal product manufactureSemiconductor devicesPhysical chemistryMid infrared
The invention discloses a three-color detector and a manufacturing method thereof. The three-color detector comprises: a GaN substrate arranged sequentially; an AlGaN sub-detector arranged between the AlGaN sub-detector and the GaN substrate There is a first buffer layer; the InGaAs sub-detector is connected to the AlGaN sub-detector through a bonding layer; the InGaNAs sub-detector is provided with a tunnel junction between the InGaAs sub-detector, and the InGaNAs sub-detector The detector is provided with a second buffer layer. By vertically integrating the detection structure of multiple bands of ultraviolet / visible light / infrared in the depth direction, the GaN material is used to respond to the ultraviolet band information of <365nm, the InGaAs material is used to respond to the 365~1700nm band information, and the InGaNAs material is used to respond to the mid-infrared band of 1700~3000nm information, realize simultaneous detection of ultraviolet / visible light / infrared bands, obtain "color" images of targets, and obtain target information more abundantly, accurately and reliably.
Owner:ZHONGSHAN DEHUA CHIP TECH CO LTD
A human blood vessel detection system based on laser photoacoustic spectroscopy
The invention discloses a human blood vessel detection system based on laser photoacoustic spectroscopy, which is mainly composed of a main controller, a scanning head, a three-dimensional electric platform and auxiliary components. The beneficial effect of the present invention is that laser photoacoustic and laser Raman multiplex the light source and part of the optical path, reducing the volume and cost of the system; taking the blood flow photoacoustic echo in the blood vessel as the spatial analysis benchmark, and adopting time-domain resolution photoacoustic The echo signal analysis can analyze the photoacoustic echo signals corresponding to the blood flow passing through the main axis path, the internal tissue of the blood vessel, and the layered substances of the blood vessel wall at the same time, and can realize the photoacoustic analysis of the external shape and internal tissue of the blood vessel. Simultaneous detection of morphological distribution; photoacoustics combined with laser Raman can realize the detection of molecular components of each layered substance in the blood vessel wall.
Owner:SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
Space Debris Observation Method Based on Alternate Exposure Time of CCD Camera
ActiveCN110399866BRealize simultaneous detectionIncrease success rateImage enhancementImage analysisObservational methodOrbital space
The invention discloses a space debris observation method based on the alternation of different exposure times of a CCD camera. By controlling the CCD camera according to a given exposure time, the alternate collection of short-exposure and long-exposure images is continuously performed; by processing odd-numbered frames of short-exposure images, Realize the detection and astronomical positioning of space debris in low, medium and high orbits; realize the detection of space debris in medium and high orbits by processing even-numbered long-exposure images, and at the same time use the film model coefficients of adjacent odd-numbered frame images to realize the astronomical positioning of medium and high orbit debris detected in the current frame Positioning; and in the search observation mode, through the method of multipoint adjustment and the film model coefficients of adjacent odd frames, the precise astronomical positioning of space debris in low, middle and high orbits is realized. The present invention can realize the simultaneous detection and accurate positioning of space debris in all orbits. Astronomical positioning improves the observation efficiency of observation equipment and ensures the measurement accuracy of observation equipment for space debris in all orbits.
Owner:ZIJINSHAN ASTRONOMICAL OBSERVATORY CHINESE ACAD OF SCI
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ActiveCN107561591BRealize simultaneous detectionImprove detection accuracyDetection using electromagnetic wavesRadio wave reradiation/reflectionUltra-widebandRadar
Owner:SHANDONG ACAD OF SCI INST OF AUTOMATION
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