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319 results about "Led array" patented technology

Production equipment state real-time analysis method and system based on edge calculation

The invention provides a production equipment state real-time analysis method and system based on edge calculation, and relates to the technical field of information, and the method comprises the steps: analyzing the dynamic change trend of a light beam central axis according to the offset trajectory of the light beam central axis, and determining the spatial distribution characteristics of the light beam axis through the dynamic change trend of the light beam central axis in combination with an LED array arrangement SIC mode; if the adjustment angle in the lens calibration instruction set exceeds a preset angle threshold, dynamically adjusting the position of the optical axis of the lens according to the offset amplitude and direction of the optical axis, compensating the offset of the light beam axis in real time, and obtaining a calibrated optical axis parameter; according to the color temperature distribution uniformity, determining a target lens position through a lens position adjustment attribute; according to the calibrated optical axis parameters and color temperature distribution uniformity, stable light beam center axis distribution is determined, spectrum consistency is determined, and a performance evaluation data set is obtained through comprehensive evaluation.
Owner:SHENZHEN ZHONGFUNENG ELECTRIC EQUIPMENT CO LTD

Automatic illumination adjusting method and system based on seed and seedling cultivation

The invention provides an automatic illumination adjusting method and system based on seed and seedling cultivation, and relates to the technical field of illumination control and intelligent agriculture, the method comprises the following steps: firstly, collecting seedling chlorophyll fluorescence parameters to construct a light stress index, and accurately identifying a light inhibition risk; then calculating a physiologically permissible light intensity threshold adaptive to the dark response capability of the plant by combining the environment temperature and the CO2 concentration; positioning a shielded weak light area by using three-dimensional point cloud voxelization and a ray tracing technology, and calculating a shadow compensation gain coefficient; and finally, generating a control matrix in combination with a dynamic left-rotation light strategy, and driving an independent addressing LED array and a variable-angle lens to execute local precise light supplement and light vector adjustment. Through physiological feedback and spatial light field reconstruction, the problem that traditional illumination control neglects individual tolerance difference and canopy shielding is solved, photooxidation damage is effectively prevented, and the growth uniformity and the light energy utilization rate of seedling groups are remarkably improved.
Owner:ZUO XUAN (FUJIAN) TECH CO LTD

Bridge underwater safety detection method based on opto-acoustic dual mode

The invention discloses a bridge underwater safety detection method based on opto-acoustic dual modes, and relates to the technical field of underwater engineering detection, and the method comprises the following steps: obtaining water area particle size distribution and concentration data by using a multi-frequency acoustic suspended sediment concentration profiler, establishing an environmental parameter database, configuring a shipborne detection device according to the initial environmental parameter database, and detecting the underwater safety of a bridge according to the shipborne detection device. The method comprises the following steps: setting a three-axis stabilized platform carrying a polarization imaging camera and a multispectral LED array, deploying a multi-beam detection module and ADCP equipment, and establishing a unified coordinate system; multi-angle original intensity images are collected through a polarized optical imaging module, and multi-exposure fusion is carried out after processing is carried out through a mutual information minimization algorithm. An optical image and an acoustic point cloud are deeply fused by adopting a graph neural network, the detection precision is improved through dynamic weight optimization of an attention mechanism and a space-time registration algorithm, a multi-index fusion model is constructed based on fuzzy logic and a D-S evidence theory for adaptive early warning decision, upgrading from single-parameter alarm to multi-dimensional decision is realized, and the false alarm rate is reduced.
Owner:XIAMEN XINGHANG SHENGHUI TECHNOLOGY CO LTD

Vertically stacked three-color full-color Micro-LED structure

The utility model relates to the field of Micro-LED display, in particular to a vertically stacked three-color full-color Micro-LED structure, which is characterized in that the vertically stacked three-color full-color Micro-LED structure comprises a driving circuit, a first chip, a second chip and a third chip are sequentially arranged on one side of the length direction of the driving circuit from top to bottom, and the first chip, the second chip and the third chip are arranged on the other side of the length direction of the driving circuit. The length of the first chip is larger than that of the second chip, and the length of the second chip is larger than that of the third chip, (1) the space occupation caused by transverse tiling in the Micro-LED array is reduced, the pixel density of a display screen is remarkably improved, the area of full-color pixels is reduced, the overall size of the screen is reduced, and the size of the display screen is reduced; according to the invention, the structure is simple, the structure is compact, the structure is simple, the structure is especially suitable for high-precision, high-resolution and miniaturized display equipment, the influence of high-energy photons of blue light or green light on the red light chip is effectively reduced, each chip pole can be directly and vertically connected to the driving circuit at the bottom, the occupied space is reduced, and the problems of complicated pole extension and connection in a traditional stacked structure are avoided.
Owner:SOUTHERN UNIVERSITY OF SCIENCE AND TECHNOLOGY

Device and method for rapidly removing refractory organic pollutants by utilizing photoelectric synergy and modified foam zero-valent iron to synchronously catalyze ozone

The invention belongs to the technical field of wastewater treatment, and particularly relates to a device and a method for quickly removing refractory organic pollutants by utilizing photoelectric synergy and modified foam zero-valent iron to synchronously catalyze ozone. According to the technical scheme, the device comprises a shell, the interior of the shell is divided into an anode chamber and a cathode chamber through a proton exchange membrane, the shell is provided with a water inlet communicated with the anode chamber and a water outlet communicated with the cathode chamber, and the water inlet is communicated with the anode chamber and the water outlet is communicated with the cathode chamber. An anode material and an LED array are arranged in the anode chamber, a cathode material is arranged in the cathode chamber, and the cathode chamber is further filled with a modified foam zero-valent iron catalyst. The invention provides a device and a method for rapidly removing refractory organic pollutants by utilizing photoelectric synergy and modified foam zero-valent iron to synchronously catalyze ozone.
Owner:CHINA MCC5 GROUP CORP LTD

LED and method of manufacture

ActiveUS12563866B2Led arrayNitride
A light emitting diode (LED) comprises: an n-doped portion; a p-doped portion; and a light emitting region located between the n-doped portion and the p-doped portion. The light emitting region comprises: a light-emitting layer which emits light at a peak wavelength between 400 and 599 nm under electrical bias thereacross; a III-nitride layer located on the light-emitting layer; and a III-nitride barrier layer located on the III-nitride layer. The light emitting diode comprises a porous region of III-nitride material. An LED array and a method of manufacturing an LED with a peak emission wavelength between 400 nm and 599 nm under electrical bias are also provided.
Owner:PORO TECHNOLOGIES LTD

Self-adaptive partition dynamic temperature control TV backlight lamp panel and control method thereof

The invention discloses a self-adaptive partition dynamic temperature control TV backlight lamp panel and a control method thereof, and belongs to the field of TV backlight lamp panels, the self-adaptive partition dynamic temperature control TV backlight lamp panel comprises a PCB, an LED array, a temperature sensor network and a dynamic adjusting module, the PCB is provided with the LED array, the PCB is provided with the temperature sensor network, the temperature sensor network is provided with a plurality of groups of digital temperature sensor modules, and the dynamic adjusting module is connected with the LED array and the temperature sensor network. The LED array is formed by uniformly distributed LED chips; the digital temperature sensor module is arranged between the LED chips, a dynamic adjusting module is arranged on the PCB, and the LED array, the temperature sensor network and the dynamic adjusting module are in communication connection. The temperature of each partition of the LED array in the TV backlight lamp panel is monitored in real time, and the temperature is adjusted through the dynamic adjusting module, so that the service life of the LED is greatly prolonged. According to the invention, invalid heat can be reduced, energy loss is reduced, and brightness fluctuation and color cast of an HDR scene are eliminated by ensuring small temperature difference of partitions.
Owner:ANHUI COREACH TECHNOLOGY CO LTD

Portable hair care and care cap based on phototherapy module

The invention relates to the technical field of hair care, and discloses a portable hair care cap based on a phototherapy module, the portable hair care cap comprises a cap body, the phototherapy module is fixedly mounted in the cap body, the outer wall of the cap body is fixedly connected with a shell, and an intelligent control module and a power supply device are arranged in the shell; the intelligent control module is electrically connected with the phototherapy module and the power supply device, and the helmet further comprises a heat dissipation mechanism and a buffer mechanism which are integrally arranged between the phototherapy module and the helmet body; a dynamic power adjusting module and a multi-area cooperative control module are arranged in the intelligent control module. The scalp is divided into independent control areas such as the head top, the foreangle and the temple, each area is provided with an independent LED array and a driving circuit, a user is supported to customize wavelength combination and initial power of each area through an intelligent terminal, the different maintenance requirements of alopecia and early white hair in different areas are met, and single-area or multi-area collaborative phototherapy can be achieved.
Owner:LI SHIZHEN PHARM GRP CO LTD

A multispectral fusion high-speed detection device and method for surface defects of a steel strip

The application provides a kind of steel band surface defect multispectral fusion high-speed detection device and detection method, belong to steel band surface defect detection technical field, including foundation and main support, the main support is door type structure, across the both sides of steel band production equipment, bottom is connected with foundation using embedded bolt.The application is irradiated to steel band surface by LED array light source respectively using white, ultraviolet light and red light source, and the image of steel band surface after being irradiated by different light sources is collected using CCD camera respectively, so that when image recognition is carried out, the image of white light source is identified according to the brightness of reflected light, the defect of different depth is identified, the image of ultraviolet light source is identified by shortening wavelength to break through diffraction limit, the resolution and contrast of surface defect detection are improved;The image of red light source enhances the color development effect of small scratch on metal surface;Through the image recognition of different light colors, the detection and recognition accuracy can be effectively improved, and the influence of sundries and reflection on detection result is reduced.
Owner:ZHEJIANG CHENGHUAN NEW MATERIALS CO LTD

Micro-LED array surface defect detection method based on AFT-YOLO algorithm

The invention discloses a Micro-LED array surface defect detection method based on an AFT-YOLO algorithm. The Micro-LED array surface defect detection method comprises the steps that a high-resolution microscopic image is acquired, and four types of targets (chip vacancy, surface foreign matter, circuit damage and chip incompleteness) are marked; adaptive weighted downsampling is introduced at a downsampling position of a step length 2 of a backbone and a neck of the YOLOv8 baseline so as to enhance fine granularity and small target perception; constructing a feature focusing-diffusion pyramid at the neck to realize cross-scale semantic consistent fusion; a task alignment dynamic detection head is adopted at a detection head, and shared convolution, deformable convolution and scale normalization alignment classification and regression optimization are carried out. According to the Micro-LED array surface defect detection method, mAP50 is about 96% on representative industrial data, reasoning is about 99 FPS, compared with a baseline model, the precision and the speed are both improved, and the Micro-LED array surface defect detection method is suitable for high-speed online AOI detection of a high-density Micro-LED array.
Owner:SOUTH CHINA UNIV OF TECH

Preparation process of electrode self-aligned deep ultraviolet micro LED array

PendingCN121510742ALed arrayUltraviolet
The invention relates to a preparation process of a deep ultraviolet micro LED (light-emitting diode) array with self-aligned electrodes. According to the process, a metal barrier layer is deposited, a mesa shape is formed through wet etching, a mesa is formed through etching, a passivation layer is filled to protect the side wall, the CMP technology is combined, the surface is polished to be flat, ICP etching is carried out, the metal barrier layer is exposed, the metal barrier layer is washed away, the mesa can be exposed, and then a long electrode does not need to be aligned with the process in a high-precision mode. Complex procedures are not needed, the alignment difficulty is overcome and the chip yield is improved by combining the planarization of the filling thick passivation layer and the ICP dry etching technology, and industrialization of micro-LED array preparation is facilitated.
Owner:HEBEI UNIV OF TECH

Intelligent inter-plant light supplement lamp control system based on PWM dimming and wireless networking

The invention discloses an inter-plant light supplement lamp intelligent control system based on PWM dimming and wireless networking, and relates to the technical field of plant light supplement illumination control, and during operation of the system, the system comprises a central management server, a wireless communication gateway, an environmental data acquisition unit, an intelligent ventilation light supplement terminal, a distributed power supply management unit and a mobile monitoring terminal. The server generates a PWM control instruction based on the environmental parameters and issues the PWM control instruction to the intelligent terminal through the wireless gateway; and the terminal adjusts the light intensity of the LED array by using the PWM driving unit, and synchronously controls the active ventilation device to improve the microenvironment between plants. Through deep integration of PWM dimming and wireless networking, gridding management and control of the greenhouse environment are realized, the photosynthetic efficiency of the middle and lower parts of plants is effectively improved, the gas diffusion rate is enhanced, the system wiring cost and energy efficiency loss are reduced, and precise agricultural production is realized.
Owner:SHENZHEN LONGMAN SCI & TECH IND

A soft light control method and a mobile terminal

The application relates to the technical field of photographic light source control, and discloses a soft light control method and a mobile terminal, wherein the soft light control method comprises the following steps: constructing a four-dimensional light field harmonic model, decomposing a target light effect into a time-space harmonic combination; decomposing the target light effect into a time-space mapping sequence to form light field microstructure control parameters; combining a micro-electro-mechanical system programmable reflection array and a liquid crystal spatial light modulator, cooperating with a multi-channel LED array to realize sub-millimeter light distribution control and microsecond light field dynamic reconstruction; establishing an accurate synchronization mechanism of a shooting device shutter and light effect change; providing a light effect animation programming interface based on key frames, supporting the definition of a dynamic change sequence of light trajectory, intensity and form; and through the fusion of microstructure light field control and time-space harmonic analysis, four-dimensional dynamic light sculpture is realized, and the technical problem that a traditional soft light control method can only adjust overall brightness and color temperature is solved.
Owner:SHENZHEN TYSON OPTOELECTRONICS CO LTD

Three-dimensional imaging and detection integrated device and method for carbon deuterium pellets

PendingCN121994823ASolving the problem of low contrastReliable quantitative basisNuclear energy generationOptically investigating flaws/contaminationImaging algorithmLed array
The invention discloses a three-dimensional imaging detection integrated device and method for a carbon deuterium pellet, and belongs to the technical field of optical precision measurement and nondestructive testing. The device comprises an illumination mechanism, a light source mechanism and a control mechanism, wherein the illumination mechanism adopts an addressable LED array to provide multi-angle illumination; the imaging mechanism is a 4f microscopic system and is used for collecting images; the sample control mechanism is used for realizing automatic posture adjustment and transmission of the pellets; and the control mechanism coordinates all the modules to complete automatic detection. The method comprises the steps that an image sequence is collected, complex amplitude projection is recovered through a Fourier lamination imaging algorithm, and based on a tomography inversion algorithm, the surface point cloud radius is calculated and compared with a standard value, and the defect is automatically identified and marked. According to the invention, automatic, quantitative and high-resolution three-dimensional imaging and evaluation of the morphology and internal defects of the pellet are realized, and a stable and efficient measurement platform is provided for scientific research and industrial application.
Owner:UNIV OF CHINESE ACAD OF SCI

Visible light communication transmitting device

ActiveCN224459812UTelecommunicationsLed array
This utility model discloses a visible light communication transmitting device, relating to the field of visible light communication technology. The visible light communication transmitting device includes a format conversion circuit, a bandwidth expansion circuit, a level bias circuit, and a modulation and LED array circuit connected in sequence. The input terminal of the format conversion circuit receives a high-speed differential electrical signal, and the output terminal outputs a serial electrical signal. The input terminal of the bandwidth expansion circuit receives the serial electrical signal, and the output terminal outputs an inverted high-speed signal. The input terminal of the level bias circuit receives the inverted high-speed signal, and the output terminal outputs a forward high-speed signal. The input terminal of the modulation and LED array circuit receives the forward high-speed signal, and the output terminal outputs visible light. This utility model can reduce the hardware cost of the device while ensuring a large bandwidth for the visible light communication device.
Owner:SHENZHEN SKYWORTH DISPLAY TECH CO LTD

A precision detection device for metallized film of a capacitor

The application discloses a kind of precision detection equipment of capacitor metallized film, it is related to detection tool technical field, including positioning plate;The application is matched between support assembly and visual component, the detection of film precision and defect is realized;Through the cooperation between visual camera, fill light and LED array board, the surface defects such as scratch and stain on the top surface of film are detected, and the light transmission defects such as pinhole and impurity inside film can also be detected, to realize the comprehensive detection of surface and internal defects;Through parameter calibration unit, according to the actual parameters of film, combined with equipment basic parameters and preset correction coefficient, the key detection parameters are calculated, when detecting different specifications of film, parameter calibration unit automatically calculates optimal parameter and compares with current setting value, obtains adjustment amount and is wirelessly transmitted to control terminal to prompt operator to adjust, if still not up to standard after adjustment, it is prompted again, until parameter setting meets the requirements.
Owner:TONGLING QILI ELECTRONICS MATERIALS

μ-LED projection device and method for its manufacture

In an embodiment a projection device includes an LED array on which a plurality of micro LEDs is arranged at regular intervals, projection optics spaced from the LED array and configured to receive light emitted from the LED array and to project the light onto a projection surface and a light collecting structure comprising individual protrusions, wherein the protrusions are optically coupled to individual LEDs of the LED array such that they restrict an angular space of light emitted by the individual LED and / or make an emission uniform.
Owner:AMS OSRAM INT GMBH

A photoacoustic imaging method using a focused LED light source

The application provides a photoacoustic imaging method using a focused LED light source, solves the problems of insufficient light intensity of the LED light source, inability to realize high-quality photoacoustic imaging, serious electromagnetic interference and difficulty in irradiation in liquid and tissue. The imaging method comprises the following steps: a driving circuit emits a periodic pulse signal with driving capacity, and controls an LED array to periodically emit pulsed light; a 3D printing component is fixed above the LED array, and a hole position corresponds to an LED position; an optical fiber is passed through the 3D printing component, and an input end of the optical fiber is coupled with a light-emitting part of the LED; a plurality of optical fibers are combined into one bundle at the output end of the optical fiber by using an optical fiber combiner, the pulsed light emitted by the plurality of LEDs is superimposed together, the focusing effect is achieved, and high-intensity pulsed light can be obtained at the output end of the combiner; the imaging target is irradiated by using the high-intensity pulsed light at the output end of the combiner, an ultrasonic probe receives an acoustic pressure signal, and photoacoustic imaging is realized through an algorithm.
Owner:NANJING UNIV

LED light output intelligent control method based on high-frequency driving

The invention provides an LED light output intelligent control method based on high-frequency driving, and relates to the technical field of intelligent control, and the method comprises the steps: applying a high-frequency detection pulse sequence with the same amplitude and increasing frequency to each lamp bead in an LED array, collecting the light response time constant and peak light intensity data of the lamp bead under the excitation of the detection pulse sequence, and obtaining the light response time constant and peak light intensity data of the lamp bead; and a frequency-light response feature vector matrix is constructed, and grouping management and distributed prediction control of the LED array are realized. According to the invention, the light response characteristic difference between the lamp beads is fully considered, and the accuracy and uniformity of light output control are improved; meanwhile, by establishing a distributed predictive control model, the optimal driving frequency and duty ratio parameter combination of each group can be predicted in real time, the problem of light response nonlinearity under the high-frequency driving condition is effectively solved, and the stability and efficiency of dynamic light output are improved.
Owner:KAMS LIGHT CO

High voltage LED emitter

A high power LED array driven at greater than about 6 V for vehicular applications and a method of manufacturing the LED array are described. A mirror is disposed on the n-semiconductor layer and the p-semiconductor layer. A dielectric spacer is disposed between the p-semiconductor and the mirror. A hard mask is deposited on the dielectric spacer and has an opening with a conductor to the mirror. A dielectric layer is deposited on the hard mask. A bonding layer formed on the dielectric layer is connected to the semiconductor. Trenches extend through the semiconductor to form pixels connected in series. A dielectric spacer layer stack is disposed on sidewalls of the trench to form a Bragg reflector. A redistribution dielectric (RDL) layer is disposed on the bonding layer. An under bump metallization (UBM) pad deposited on the RDL layer is coupled to the bonding layers of the first and last pixels via an opening in the RDL layer.
Owner:LUMILEDS LLC

Micro LED display panel, manufacturing method thereof and display device

PCT designated stageWO2026097830A1LED displayFlexible circuits
A micro LED element, a micro LED display panel, and a display device are provided. The micro LED display panel includes a micro LED chip including a driving layer; a micro LED array disposed on the driving layer; and a transparent protective layer disposed on the micro LED array, wherein the driving layer is configured to receive signals for driving the micro LED array; a flexible circuit board (FCB) disposed adjacent to the micro LED chip and configured to couple to the micro LED chip; and a molded layer disposed to join the micro LED chip and the FCB together.
Owner:JADE BIRD DISPLAY (SHANGHAI) LTD

Portable lighting device with a flexible and deployable LED lighting element

A portable lighting device capable of being used in multiple use configurations, defined by distinct positions and distinct states, to provide the user of the lighting device with greater operating flexibility, including the ability to be worn on an article of clothing. The portable lighting device includes a housing having an integral securement recess, an adjustable, deployable lighting element including a flexible LED array affixed to a flexible backing support member, and a coupling support extending from a central portion and that is pivotably coupled to the front portion of the housing. An electronics package includes a power source contained within the housing and operably coupled to said lighting element. An attachment means extends from the housing and is adapted to removably connect with an article of closing worn by a user of the device. Depending upon the particular need for illumination, the lighting element can be adjusted and deployed into a variety of states and positions.
Owner:PROMIER PROD

A method for transferring micro-leds based on chemical dynamic bond seal

ActiveCN117936664BLED displayLed array
The application discloses a method for transferring Micro-LED based on chemical dynamic bond stamping, and the Micro-LED transfer method is realized by a polyborosiloxane (PBS) polymer stamp containing a dynamic boron-oxygen bond, a Micro-LED array chip based on a weakened structure and a target hetero-substrate based on glue spraying adhesion treatment. The application utilizes the property that the polyborosiloxane (PBS) polymer stamp exhibits a viscous flow state under low pressure stress stimulation and exhibits a solid state under high peeling stress, realizes a high switching ratio of the grabbing force of the Micro-LED, and thus realizes efficient pickup and placement of the Micro-LED. The transfer method is simple and fast, has the characteristics of high-efficiency transfer of wafer-level small-size Micro-LED chips, and has a very broad application prospect in the fields of Micro-LED display, flexible optoelectronics and photoelectric information communication.
Owner:HUNAN UNIV

Far ultraviolet micro-LED photocatalyst monolithic integrated chip and preparation method thereof

ActiveCN121968855Areduce lossReduce optical interfaceRadiationFar ultravioletMicroorganism
The invention discloses a far ultraviolet micro-LED photocatalyst monolithic integrated chip and a preparation method of the far ultraviolet micro-LED photocatalyst monolithic integrated chip. According to the chip, an AlGaN-based micro-LED array with the emission peak position of 220-230 nm is adopted as a far ultraviolet light source, a conformal composite layer structure with optical shaping and photocatalysis dual functions is integrated on the light emitting face of the AlGaN-based micro-LED array in a monolithic mode, and a composite layer is composed of a high-transmittance framework layer and a porous catalytic skin layer; the catalytic skin layer conformally deposits a porous membrane with the thickness of 50-300 nm on the surface of the lens, the aperture is 10-200 nm, the porosity is 20-60%, and degradation of organic pollutants and inactivation of microorganisms in air are achieved under the wave band of 220-230 nm. And a transition layer with the thickness of 50-200 nm is arranged between the light emitting surface of the chip and the composite layer, so that the adhesive force is improved and the thermal stress is relieved. The device is compact in structure, low in energy consumption, free of mercury, environmentally friendly and suitable for the fields of far ultraviolet disinfection, air purification, healthy illumination in closed space and the like.
Owner:WUHAN TEXTILE UNIV

Haematococcus cultivation method based on flexible LED array and photobioreactor

The invention discloses a haematococcus culture method based on a flexible LED array and a photobioreactor, and relates to the field of bioengineering, and the method comprises the following steps: preparing an SE culture medium according to the growth requirements of haematococcus; pumping the SE culture medium into the sterilized and cooled photobioreactor to a working volume through a sterile pipeline; the photobioreactor is started, sterile air with set flow is introduced, and mild stirring is carried out. According to the invention, the flexible LED array is adopted to surround the transparent reaction inner cavity, so that three-dimensional light distribution is realized, illumination dead angles are eliminated, and the light receiving uniformity of cells is greatly improved; an OD680-target light intensity linear curve is fitted through a pre-experiment, a reactor controller and an LED driving module are combined, light intensity automatic linear adjustment is achieved, light damage is avoided, and the photosynthetic efficiency is greatly improved compared with a traditional rigid LED. The photobioreactor realizes integrated control of illumination and ventilation, reduces manual operation, reduces pollution risk, is stable in product content among batches, and meets the requirements of industrial large-scale production.
Owner:云南爱尔发生物技术股份有限公司

LED integrated lamp panel array distribution design method and device and storage medium

The application discloses an LED integrated lamp panel array distribution design method and device and a storage medium, and comprises the following steps: acquiring a target working power of an LED integrated lamp panel, determining a total number of LED lamps based on the target working power; determining a target LED array scheme based on the total number of LED lamps; acquiring a minimum gap limited by heat dissipation efficiency and a minimum gap limited by breakdown voltage of the LED integrated lamp panel; determining a horizontal gap and a vertical gap of the LED array according to the minimum gap limited by heat dissipation efficiency and the minimum gap limited by breakdown voltage; determining overall structure parameters of the LED integrated lamp panel according to the horizontal gap, the vertical gap and the target LED array scheme; and arranging the LED integrated lamp panel array according to the horizontal gap, the vertical gap and the overall structure parameters of the LED integrated lamp panel, so that the gap between LEDs is designed by combining the limitations of heat dissipation and breakdown voltage, the luminous efficiency is effectively improved, and the working stability of the LED integrated lamp panel is ensured.
Owner:EVA YUNZHI (CHENGDU) TECH CO LTD

Method and system for detecting defects of corrugated board stacks based on machine vision

The present application relates to the technical field of corrugated board detection, and specifically discloses a corrugated board stacking defect detection method and system based on machine vision, wherein a ring-shaped LED array light source at the side of a stacking transmission line and a vertical diffuse light source at the top are triggered at different times, an industrial CCD camera synchronously acquires reflected light, transmitted light and visible light channel images, image features are fused to generate a defect response graph, corrugated texture interference is eliminated through adaptive Gaussian filtering, a maximum value proportion of the defect response graph is combined with dynamic adjustment of high and low double thresholds based on illumination, candidate defect regions are segmented and merged to calculate a preliminary stacking defect index, regional continuous edge ridge lines are extracted to quantify periodic intensity, and illumination artifacts are excluded in combination with structural similarity indexes, and finally a real defect index is obtained.The present application effectively improves the accuracy of stacking defect detection, reduces the false alarm rate, can adapt to the detection requirements of illumination fluctuation and curved edge rubbing plate defects, and meets the quality control requirements of corrugated board production.
Owner:KARRY COMP TECH

Ultraviolet light communication system and demodulation method based on transverse effect position sensitive detector

The invention discloses an ultraviolet light communication system based on a transverse effect position sensitive detector, and belongs to the technical field of optoelectronic devices. Comprising a space code modulation module, an imaging lens and a signal demodulation module. The spatial coding modulation module is composed of a 2 * 2 high-frequency flicker ultraviolet LED array, a driving circuit and an imaging lens, four LED units are defined as four spatial coding states respectively, information to be transmitted is converted into an 8-bit binary sequence according to an ASCII coding rule, and the 8-bit binary sequence is split into four groups of 2-bit sub-codes; each group of sub-codes realizes information coding based on a two-dimensional space position by controlling the time sequence lightening of a single LED unit; the signal demodulation module comprises a position sensitive detector and a signal processing circuit thereof. The signal processing circuit is configured to restore a binary sub-code corresponding to an incident light spot through a method of comparing amplitude extreme values of four electrode output signals of the position sensitive detector; and then splicing the demodulated sub-codes into a complete data frame. The method is suitable for short-distance ultraviolet light communication in a complex environment.
Owner:BEIJING UNIV OF TECH

Display panel and method manufacturing thereof

PendingUS20260130023A1Led arrayHemt circuits
A display panel includes a substrate, an LED array disposed on the front side of the substrate, a driving circuit disposed on the front side of the substrate and connected to the LED array, a connecting line and a transparent conductive layer disposed on the back side of the substrate. The connecting line is spaced apart with a side surface of the substrate thereby defining a cutting area. The transparent conductive layer extends from the cutting area and at least partially covering the connecting line. The display panel further includes a first passivation layer and a conductive layer. The first passivation layer is disposed on the transparent conductive layer and the connecting line. The side surfaces of the first passivation layer, the transparent conductive layer, and the substrate are aligned. The conductive layer penetrates the first passivation layer to connect the transparent conductive layer to the driving circuit.
Owner:AU OPTRONICS CORP