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34results about How to "Strong optical signal" patented technology

Fluorescence detection instrument with reflective transfer legs for color decimation

An optical instrument using a plurality of lasers of different colors with parallel, closely spaced beams to stimulate scattering and fluorescence from fluorescent biological particulate matter, including cells and large molecules. A large numerical aperture objective lens collects fluorescent light while maintaining spatial separation of light stimulated by the different sources. The collected light is imaged into a plurality of fibers, one fiber associated with each optical source, which conducts light to a plurality of arrays of detectors, with each array associated with light from one of the fibers and one of the lasers. A detector array has up to ten detectors arranged to separate and measure colors within relatively narrow bands by decimation of light arriving in a fiber. A large number of detectors is mounted in a compact polygonal arrangement by using reflective transfer legs from multiple beam splitters where the transfer legs arise from a polygonal arrangement of beam splitters in a circumference within the circumferential arrangement of detectors.
Owner:BECTON DICKINSON & CO

Image acquisition device and optical displacement estimation device

The invention discloses an image acquisition device. The image acquisition device comprises a light source and a sensor. According to the light source, incident light does not pass through media except air, enters a target object directly and exits from the target object, so that transmitting light is generated. The sensor is used for acquiring the image of the target object according to the transmitting light.
Owner:PIXART IMAGING INC

Fluorescence detection instrument with reflective transfer legs for color decimation

An optical instrument using a plurality of lasers of different colors with parallel, closely spaced beams to stimulate scattering and fluorescence from fluorescent biological particulate matter, including cells and large molecules. A large numerical aperture objective lens collects fluorescent light while maintaining spatial separation of light stimulated by the different sources. The collected light is imaged into a plurality of fibers, one fiber associated with each optical source, which conducts light to a plurality of arrays of detectors, with each array associated with light from one of the fibers and one of the lasers. A detector array has up to ten detectors arranged to separate and measure colors within relatively narrow bands by decimation of light arriving in a fiber. A large number of detectors is mounted in a compact polygonal arrangement by using reflective transfer legs from multiple beam splitters where the transfer legs arise from a polygonal arrangement of beam splitters in a circumference within the circumferential arrangement of detectors.
Owner:BECTON DICKINSON & CO

Method for detecting small molecule protein and peptides by using sandwich immunization sensing method

InactiveCN1480731AStrong optical signalPlay a role in biological amplificationBiological testingProtein insertionImmune complex deposition
The invention belongs to immunity detection area, especially related to method for quantitative measuring proteins and peptides with molecular weight under 20kDa. Gold-coated slide glass or triangular prism is as detection substrate. The method includes following procedures: forming an assembling body, forming duality immune complex of first antibody - antigen, forming sandwich ternary immune complex of first antibody - antigen - second antibody as well as resonant wavelength testing. The antigens to be detected are insulin bFGF, T3 or T4 etc. the first antibody and second antibody are first and second monoclone antibodies possessing specificities and complementarity for anti each antigen to be detected. The invention monitors dynamic reaction procedure of biomoleculars, and tests change of concentration of object to be detected with high sensitivity. The combination of second anti body generates stronger optical signal, creating biologic amplified activate.
Owner:JILIN UNIV

Ceramic scintillator array and manufacturing method thereof

The invention discloses a ceramic scintillator array, which comprises a plurality of ceramic scintillator elements. The plurality of ceramic scintillator elements are arranged in an array structure. The bright dipping surface of each ceramic scintillator element is a rough surface. The bright dipping surface of the ceramic scintillator array is higher in light emitting efficiency. Therefore, light signals received by photon detection equipment are higher in strength, so that the final imaging quality is improved. Meanwhile, the bright dipping surface of the ceramic scintillator array is increased, so that the receiving and processing difficulty of the back-end signals of a detector is reduced. The manufacturing cost of detector matching equipment is lowered. At the same time, the invention also provides a manufacturing method of the ceramic scintillator array. According to the method, the bright dipping surface of each ceramic scintillator element is subjected to the roughening treatment. In this way, the light emitting efficiency of the ceramic scintillator array is improved.
Owner:宁波虔东科浩光电科技有限公司

Calcium titanate up-conversion luminescence nanoparticle and preparation method thereof

The invention discloses a calcium titanate up-conversion luminescence nanoparticle prepared by using the combination of a sol-gel method and a coprecipitation method. By adding rare earth elements ytterbium and erbium, an up-conversion luminescence effect can be achieved, and the method is simple, and strong in maneuverability. Obtained materials are calcium titanate luminescence nanoparticles with an average particle size of 65 nm and with uniform size distribution, good monodispersity and good biocompatibility. The nanoparticle has a wide application prospect in the biomedicine, for example, the nanoparticle can be used as biological probes, tissue or cell imaging and drug tracers and the like; and the nanoparticle also has important applications in the field of light-emitting devices.
Owner:ZHEJIANG UNIV

Scattered light range of view measurement apparatus

A method and apparatus for determining a range of sight which are capable of monitoring and correcting the operability of the instrument. A light emitter directs an emitted light beam to a measurement zone and a light receiver receives a received light beam from the measurement zone. The emitted light beam and the received light beam cross each other in the measurement zone. A deflector deflects at least a portion of the emitted light beam downstream of the measurement zone along a light transmitting path and directs the portion of the emitted light beam into the received light beam at a side of the measurement zone opposite from the light receiver. An optical shutter intermittently closes the light transmitting path in a temporally controlled manner.
Owner:SICK AG

Method for measuring content of powdery substantial elements based on dual pluses

The invention discloses a method for measuring the content of powdery substantial elements based on dual pluses, characterized in that: a powdery sample is put on a transparent glass pallet, the two pulses are focused onto the bottom of the powder through the glass pallet, the first pulse generates plasmas at the bottom of the powder, the second pulse carries out subsequent heating on the generated plasmas, radiant light signals emitted by the plasmas pass through the glass pallet and are collected by a collecting lens arranged below the glass pallet, and the collected radiant light signals are transmitted to a spectrometer through optical fibers for analyzing. According to the invention, there in no need of further treatment of the powdery sample, thus the speed of on-line detection is raised; the measuring signal fluctuation caused by the unevenness of the powder layer surface is overcome, and the repeatability of the measurement is raised; in addition, the application of the dual pluses allows the plasmas to be more close to a local thermal equilibrium state, thus the raising of the measurement precision is benefited.
Owner:GUODIAN FUEL +1

Windshield coating film

The invention discloses a windshield coating film which comprises a first area, and the first area comprises at least one layer of antireflection film used for transmitting light emitted by a laser radar in a vehicle. The coating film in the area is an antireflection film aiming at the corresponding wavelength of the emergent light of the LiDAR, and the antireflection film can enable the reflection influence of the windshield on the emergent light of the LiDAR to be as small as possible, so that more emergent light of the LiDAR is emitted out of the vehicle through the windshield. And meanwhile, the antireflection film can benefit the receiving end of the LiDAR, so that the optical signal returned by the field of view and received by the receiving end is stronger.
Owner:VERTILITE CO LTD

Optical fiber displacement sensor

A displacement transducer of optical fiber is prepared for connecting semiconductor laser to wavelength division multiplexer through optical fiber, connecting direct-through end of said multiplexer to DFB optical laser and connecting output end of said multiplexer to fixed F-P spectrum analysis unit through optical fiber isolator.
Owner:SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI

Light sensing chip, camera and electronic product

The invention discloses a light sensing chip, a camera and an electronic product. The camera and the electronic product respectively comprise the light sensing chip. The light sensing chip comprises a chip body and a reflection device arranged on one side, deviating from the light incidence plane, of the chip body, and the reflection device is used for reflecting light penetrating through the chip body so that the chip body can sense the light again. The reflection device is arranged on the shady face of the light sensing chip, and the light sensing chip carries out secondary light sensing by reflecting the light emitted by the light sensing chip back through the reflection device, so that the light signal intensity received by the light sensing chip is improved, and the light sensing efficiency is improved. According to the camera with the reflection device, the size of the light sensing chip is decreased, so that the camera is smaller in size, and the shooting effect is ensured as much as possible. As the camera smaller in size is adopted on the electronic product, the size of the electronic product can be decreased, and experience comfort level of customers and the attractiveness of the electronic product can be improved.
Owner:GUANGDONG OPPO MOBILE TELECOMM CORP LTD

Non-invasive pressure measuring method for esophageal varices

The invention belongs to the field of the medical detection methods and specifically relates to a non-invasive pressure measuring method for esophageal varices. The method comprises the following steps: firstly, an air pump adjustable in air pressure is used for generating an airflow and conveying the airflow to an air delivery pipe, the air delivery pipe gets close to the esophageal varices via a biopsy channel of a gastroscope; the airflow of the air delivery pipe is vertically applied to impact the surface of the varices in a position spaced by a certain distance and the impact pressure of the airflow is gradually increased; at the moment when a vascular wall is just compressed flatly, the tension vector of the vascular wall is parallel to the vascular wall, and at this moment, the impact force of the airflow is equal to the pressure of the vein. The method is used for realizing truly non-invasive pressure measurement by virtue of non-contact detection, namely compressing the blood vessels by use of the airflow. The method is capable of effectively avoiding interference caused by the varices of various forms on pressure measurement; provided by bionic verification tests and animal experiments, the method is high in accuracy and has clinical use value.
Owner:THE THIRD XIANGYA HOSPITAL OF CENT SOUTH UNIV

Automatic collimation optical remote measurement system

The invention belongs to the technical field of optical telemetry, and in particular relates to an optical telemetry system, which includes a collimator lens and an echo collection system located in front of the measuring laser. A beam splitter is set in front of the zoom lens in the coaxial direction, an aiming laser is set under the beam splitter, a reference gas chamber and a reference detector are set above the beam splitter, a part of the visible laser emitted by the aiming laser is transmitted through the beam splitter and enters the reference The gas chamber and the reference detector, part of the visible laser light emitted by the aiming laser is reflected by the beam splitter and coincides with the measurement laser of the measuring laser passing through the beam splitter, and the output window is located in front of the beam splitter.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

Image retrieving apparatus and optical displacement estimating apparatus

An image capturing apparatus comprising: a light source, for transmitting incident light to an objective without utilizing any medium besides air, such that the light emits from the objective to generate passing-through light; and a sensor, for capturing an image of the objective according to the passing-through light.
Owner:PIXART IMAGING INC

Up-conversion nano material capable of responding to pH value and preparation method thereof

InactiveCN106397664ACannot change the response valueQuick responseSolubilityUp conversion
The invention discloses an up-conversion nano material capable of responding to pH value and a preparation method thereof. The method includes: synthesizing a pH-sensitive high molecular material; subjecting the pH-sensitive high molecular material and oleic acid protected up-conversion nanoparticles to ligand exchange to obtain the up-conversion nano material. The up-conversion nano material is used as a substrate and combined with polytertiary amine pH responding polymer to realize pH responding performance of an anti-Stokes shift optical material. In a low-pH water solution, under excitation of near infrared laser, the nano material emits light weakly; after being higher than a specific pH value, light intensity of the nano material can be enhanced by 20 times relative to that when pH value is low; pH conversion interval is only 0.3 pH interval, in other words, the light intensity of the up-conversion nano material can be enhanced by 20 times by only changing proton concentration in a water solution by 2 times. The intelligent-responding up-conversion nano material prepared by the method has high water solubility, high optical signal intensity, low toxicity and sensitive responding performance to pH value of environment.
Owner:CAPITAL NORMAL UNIVERSITY

Cathode modulation Faraday anomalous dispersion atom light filter and preparation method thereof

The invention discloses a cathode modulation Faraday anomalous dispersion atom light filter which comprises a hollow cathode lamp, a drive current source, a permanent magnet or an electromagnetic coil, a polarizer and an analyzer. The hollow cathode lamp is connected with the drive current source, the permanent magnet and the electromagnetic coil are placed at the front end and the rear end of the hollow cathode lamp respectively, and spacings are arranged between the permanent magnet and the hollow cathode lamp and between the electromagnetic coil and the hollow cathode lamp. The analyzer is placed at the rear end of the hollow cathode lamp, and the polarizer is placed at the front end of the hollow cathode lamp. The polarization direction of the analyzer is perpendicular to the polarization direction of the polarizer. A magnetic field generated by the permanent magnet or the electromagnetic coil can generate an optical rotation effect on incident light signals, polarization rotating of signal light is achieved, hence, the light signals can be extracted and noise signals can be isolated. The cathode modulation Faraday anomalous dispersion atom light filter is simple and easy to implement, low in cost, high in performance, and stable to work. The number of available atom types is increased, and the obtained atom light filter is of great significance to the fields of laser frequency stabilization, biomedical science detection and the like.
Owner:PEKING UNIV

Oil field unattended anti-theft alarm device

InactiveCN108288338AStrong optical signalLess likely to cause bit errorsBurglar alarmTransceiverOptoelectronics
The invention provides an oil field unattended anti-theft alarm device comprising a laser generator, a plurality of laser transceivers and a laser receiver. The laser generator, the laser transceiversand the laser receiver are arranged around an oil well in sequence to form a laser fence. A laser signal emitted by the laser generator is transmitted to the laser receiver through the laser transceivers in turn. The laser receiver is connected with a GSM photo-taking anti-theft alarm. The laser fence and the GSM photo-taking anti-theft alarm are adopted to prevent crude oil from being stolen. Therefore, oil field unattended anti-theft alarm is realized.
Owner:CHENGDU ZHENGGUANG ELECTRONICS TECH CO LTD

Optical fiber passive high-voltage cable loop current detection system and method

The invention relates to an optical fiber passive high-voltage cable loop current detection system and method. The detection system comprises a loop current detection unit, a light emitting control unit, an optical fiber module, a light detection unit and a loop current calculation unit. The loop current detection unit can gather the mutual inductance energy of the high-voltage loop current into acapacitor C of the light emitting control unit; after the light detection unit detects a light signal, and then sends a pulse signal; the loop current calculation unit has a timing function and can accurately count pulse time of two times; the loop current calculation unit converts time t into a current I by using a formula I = U*C / t; the loop current calculation unit supports an optical fiber, the Ethernet and the GPRS to transmit data to a server; and the light detection unit detects the light signal, calculates the time of two light emitting point pulses through the loop current calculation unit, and calculates the corresponding armored loop current.
Owner:ZHEJIANG NEW TUWEI ELECTRONICS TECH CO LTD

A cathode lamp faraday anomalous dispersion atomic filter and its preparation method

ActiveCN104730740BExpand element typesSimple structureNon-linear opticsPolarizerSignal light
The invention discloses a cathode modulation Faraday anomalous dispersion atom light filter which comprises a hollow cathode lamp, a drive current source, a permanent magnet or an electromagnetic coil, a polarizer and an analyzer. The hollow cathode lamp is connected with the drive current source, the permanent magnet and the electromagnetic coil are placed at the front end and the rear end of the hollow cathode lamp respectively, and spacings are arranged between the permanent magnet and the hollow cathode lamp and between the electromagnetic coil and the hollow cathode lamp. The analyzer is placed at the rear end of the hollow cathode lamp, and the polarizer is placed at the front end of the hollow cathode lamp. The polarization direction of the analyzer is perpendicular to the polarization direction of the polarizer. A magnetic field generated by the permanent magnet or the electromagnetic coil can generate an optical rotation effect on incident light signals, polarization rotating of signal light is achieved, hence, the light signals can be extracted and noise signals can be isolated. The cathode modulation Faraday anomalous dispersion atom light filter is simple and easy to implement, low in cost, high in performance, and stable to work. The number of available atom types is increased, and the obtained atom light filter is of great significance to the fields of laser frequency stabilization, biomedical science detection and the like.
Owner:PEKING UNIV

Photoamplifier circuit for photoelectric reader for computer

The invention discloses a photoamplifier circuit for a photoelectric reader for a computer. The photoamplifier circuit comprises first-sixth resistors, first-third diodes, a first transistor, a second transistor, a potentiometer, a capacitor and a light-emitting diode. A first voltage input end is connected with the first end of the first resistor and the first end of the second resistor, and a second voltage input end is connected with the anode of the first diode, the second end of the first resistor, the first end of the potentiometer, the first end of the third resistor and the first end of the capacitor. A voltage output end is connected with the cathode of the first diode, the second end of the second resistor and the collector electrode of the first transistor. The photoamplifier circuit has the advantages of high capability of receiving light signals, good signal isolation effect, high anti-jamming capability and simple structure.
Owner:CHENGDU ASIAYAK TECH

Gas tank of ultraviolet differential analyzer

InactiveCN108152236AEasy to adjust the incident angleImprove reflectivityColor/spectral properties measurementsGas analysisPhysics
The invention discloses a gas tank of an ultraviolet differential analyzer, which relates to the technical field of gas analysis. The gas tank of the ultraviolet differential analyzer comprises a closed gas tank body, wherein the gas tank body is provided with a light inlet and a light outlet; at least one reflector is arranged inside the gas tank body; and the light entering from the light inletis reflected for at least one time by virtue of the reflector to exit from the light outlet. According to the gas tank of the ultraviolet differential analyzer, a plurality of reflectors are installedin the gas tank, so that the light is reflected for multiple times in the gas tank, the light course is increased, and a purpose of accurately detecting ultralow concentration smoke can be achieved.
Owner:UNIVERSTAR SCI & TECH SHENZHEN

Five-path laser radar for vehicle and control method thereof

The invention relates to a five-path laser radar for a vehicle and a control method of the five-path laser radar. The five-path laser radar comprises a radar controller, and five paths of transceivers in fan-shaped arrangement, wherein each path of transceiver respectively comprises a laser emitting lens tube and a laser receiving lens tube, the center axes of the five paths of transceivers are all crossed at the same point on the same plane, and in addition, the included angle between the adjacent laser emitting lens tubes is identical. When the five-path laser radar is used, the five paths of transceivers are firstly controlled for sequentially emitting and receiving laser pulses, the interval time is identical, then, the passing time t between the emitting and the receiving of each path of laser pulses is calculated, next, the t is subjected to twice screening through a formula that t is greater than or equal to t and smaller than or equal to 1mus and the variance, the threshold and the circulation number group, then, the qualified t average value in the cyclic number group is calculated, and finally, the region of obstacles, the distance between the obstacles and the vehicle and the relative speed are determined according to the average value, so obstacles are avoided. The design has the advantages that the scanning period is short, the structure is simple, in addition, the cost is lower, the anti-shock performance is higher, and the detection distance, the range and the precision can meet the vehicle requirements.
Owner:DONGFENG MOTOR CORP HUBEI

Ceramic scintillator array and its preparation method

The invention discloses a ceramic scintillator array, which comprises a plurality of ceramic scintillator elements arranged in an array structure; the light-emitting surface of each ceramic scintillator element is rough. The light emitting surface of the ceramic scintillator array of the present invention has higher light emitting efficiency, therefore, the optical signal received by the photon detection device is stronger, which is conducive to improving the final imaging quality; and the improvement of the light emitting efficiency can reduce the The difficulty of receiving and processing the terminal signal reduces the manufacturing cost of the detector matching equipment. At the same time, the invention also provides a preparation method of the ceramic scintillator array. In the method, the surface of the light emitting surface of the ceramic scintillator unit is roughened, thereby improving the light emitting efficiency of the ceramic scintillator array.
Owner:宁波虔东科浩光电科技有限公司

Scattered light range of view measurement apparatus

A method and apparatus for determining a range of sight which are capable of monitoring and correcting the operability of the instrument. A light emitter directs an emitted light beam to a measurement zone and a light receiver receives a received light beam from the measurement zone. The emitted light beam and the received light beam cross each other in the measurement zone. A deflector deflects at least a portion of the emitted light beam downstream of the measurement zone along a light transmitting path and directs the portion of the emitted light beam into the received light beam at a side of the measurement zone opposite from the light receiver. An optical shutter intermittently closes the light transmitting path in a temporally controlled manner.
Owner:SICK AG

Clear liquid turbidity detection equipment

The invention discloses clear liquid turbidity detection equipment which is used for a ceramic fiber board preparation flocculation process and comprises: a net front box used for containing cotton pulp, wherein a light source used for emitting light to the inner wall of the opposite side is arranged on the inner wall of one side of the net front box, a light filtering assembly used for filtering light to obtain light with specific wavelength is arranged at the front end of the light source, a first photoelectric receiver and a second photoelectric receiver which are used for receiving light rays with specific wavelengths are arranged on the inner wall of the net front box, a first included angle is formed between the incident direction of the first photoelectric receiver and the emitting direction of the light source, and a second included angle is formed between the incident direction of the second photoelectric receiver and the emitting direction of the light source; and a processing device which is used for obtaining turbidity according to the optical signal and is in signal connection with the first photoelectric receiver and the second photoelectric receiver. The online detection of the flocculation state of the ceramic fiberboard preparation is realized, the detection period is shortened, the turbid phenomenon of the cotton pulp supernatant can be found in time, the influence on the forming is avoided, and the product production efficiency is improved.
Owner:LUYANG ENERGY SAVING MATERIALS CO LTD

Viewing mirror for implementing in situ optical observation in high-temperature highly pressurised liquid entironment and applications

The invention relates to a lens structure, in particular to the lens structure which has safe and reliable sealing, realizes the in-situ optical observation under a high-temperature and high-pressure fluid environment (the maximum temperature and the maximum pressure can be 350 DEG C / 20MPa) as well as the application thereof, and solves the sealing and the visual (observation) problems under the high-temperature and high-pressure environment. The lens structure is assembled on an autoclave, and is composed of a pressure cap, a butterfly-shaped washer, a flat washer, a lens, an O-shaped ring, a lens barrel, a lens mount, a graphite washer, a clamping ring and a gland. When assembled, the components such as the pressure cap, the washers, the lens, and the like extend into the autoclave through the lens mount; then the gland is screwed on the lens mount until clamping the clamping ring and the washers tightly. In order to ensure that the lens barrel structure can stably work for a long time under the high-temperature fluid environment and can realize the high-quality in-situ optical observation, a single-crystal sapphire wafer with high high-temperature strength, good corrosion resistance and excellent optical performance is taken as the lens material. Besides, the invention increases the luminous flux through designing the lens barrel into a conical structure, thereby facilitating the realization of the in-situ optical observation.
Owner:INST OF METAL RESEARCH - CHINESE ACAD OF SCI

Image sensor, reading circuit thereof and pixel structure

The invention discloses an image sensor, a reading circuit thereof and a pixel structure. The reading circuit comprises an analog-to-digital conversion circuit which is coupled with a pixel circuit ofthe CMOS image sensor and is suitable for quantifying an output signal of the pixel circuit to obtain a corresponding digital signal; and a conversion gain control circuit, coupled with the pixel circuit and suitable for generating a corresponding pixel circuit control signal based on the swing amplitude of the signal output by the pixel circuit when the signal output by the pixel circuit is an image signal so as to control the conversion gain of the pixel circuit. By applying the scheme, the dynamic range of the image sensor can be expanded.
Owner:BRIGATES MICROELECTRONICS KUNSHAN

Double imaging polylactic acid-glycolic acid copolymer particles and its preparation method and application

The invention provides poly(lactic-co-glycolic acid) particles for dual imaging, as well as a preparation method and application of the poly(lactic-co-glycolic acid) particles. The preparation method comprises the following steps: dissolving poly(lactic-co-glycolic acid) in an organic solvent to prepare a solution A with the concentration of 0.005-0.1 g / mL; adding 0.005-0.2 mL of liquid fluorocarbon into the solution A to obtain a solution B; dissolving methylene blue in water to obtain a solution C with the concentration of 0.01-3 mmol / L; dissolving a surfactant in water to obtain a solution D with the quality concentration of 0.2-3%; adding the solution C into the solution B to obtain an emulsion E; dripping the emulsion E into the solution D to obtain an emulsion F; stirring the emulsion F till the organic solvents of the emulsion F are completely volatilized, and carrying out dialysis and purification to obtain the poly(lactic-co-glycolic acid) particles. The prepared poly(lactic-co-glycolic acid) particles can be used as a contrast agent for ultrasonic and photo-acoustic dual-functional imaging for clinical use.
Owner:SHENZHEN INST OF ADVANCED TECH

Image sensor and its readout circuit, pixel structure

An image sensor, its readout circuit, and a pixel structure. The readout circuit includes: an analog-to-digital conversion circuit coupled to the pixel circuit of the CMOS image sensor, adapted to quantify the output signal of the pixel circuit to obtain a corresponding digital signal; a conversion gain control circuit connected to the pixel circuit The pixel circuit is coupled, adapted to generate a corresponding pixel circuit control signal based on the swing of the pixel circuit output signal to control the conversion gain of the pixel circuit when the signal output by the pixel circuit is an image signal. By applying the above solution, the dynamic range of the image sensor can be improved.
Owner:BRIGATES MICROELECTRONICS KUNSHAN
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