159 results about "Diode array" patented technology

The invention discloses an optical interconnection system which comprises a light source, a transmission medium and a photoelectric detector. The light source adopts a micro resonant cavity light-emitting diode array, and the transmission medium adopts a multi-core plastic optical fiber. An optical signal output by the micro resonant cavity light emitting diode array is transmitted to the photoelectric detector through the multi-core plastic optical fiber and is converted into an electric signal through the photoelectric detector. The light source of the optical interconnection system provided by the embodiment of the invention adopts the micro resonant cavity light-emitting diode array, the transmission medium adopts the multi-core plastic optical fiber, and good balance among low power consumption, high stability and high parallelism can be achieved through component optimization.

A multifunctional, adaptive facial mask delivers cosmetic massage and light therapy in a hands-free format. The mask integrates three elements: (i) internal motion-guiding contours that channel tactile stimulation along anatomically relevant lymphatic paths, (ii) zone-selective actuation using vibration nodes, inflatable micro-bladders, or oscillating pads, and (iii) a flexible Light-Emitting Diode (LED) grid delivering red, near-infrared, and optional blue wavelengths. The soft, medical-grade silicone shell conforms to diverse facial anatomies and maintains a continuous smooth surface that isolates the user from hard mechanics. A microcontroller sequences stimulation across zones (forehead, temple, cheek, nasolabial, jawline, and neck strap) to emulate facial-yoga strokes and lymphatic drainage. Preset modes such as Lift, Recovery, and Glow manage timing, direction, and intensity. Optional enhancements include gentle heat, removable cooling inserts, and low-frequency micro-stimulation. The mask provides an integrated combination of guided internal geometry, sequenced hands-free actuation, and cosmetic light therapy within a flexible, inclusive design.

Implementations described herein are related to a diode driver that recirculates residual current from an operating current pulse in an inductor. Such recirculation produces a diagnostic current pulse to a diode array for measuring a voltage drop across a portion of the array. For example, after a controller charges an inductor of a diode driver to deliver operating current pulses to a portion of a diode array for illumination, the controller causes a residual current to remain and recirculate in the inductor. In some implementations, in response to the recirculating current reaching a monitoring threshold, the controller delivers a monitoring pulse to the portion of the diode array to measure a voltage drop across the portion of the diode array. In some implementations, the controller may infer defectivity in the portion of the array from such voltage drop measurements over time.

The invention discloses a compound monitoring method and system based on chromatographic column analysis and a medium, and relates to the technical field of chromatographic detection.The method comprises the steps that a complex matrix sample is taken, and first chromatographic column response distribution of the complex matrix sample is collected through a diode array detector; enhancement strategy optimization is carried out according to adjustable action parameters of the diode array detector, and the diode array detector collects second chromatographic column response distribution of the complex matrix sample under a first enhancement strategy; identifying a difference chromatographic column response distribution of the first chromatographic column response distribution and the second chromatographic column response distribution, and constructing a high-dimensional feature fusion fingerprint; and performing similarity measurement based on the high-dimensional feature fusion fingerprints and a pre-constructed compound feature fingerprint database to obtain a compound detection result. The technical problem of low detection accuracy caused by insufficient chromatographic response information of the compound under a complex matrix condition in the prior art is solved, and the technical effect of improving the detection accuracy of the compound is achieved.

A CMOS image sensor includes a unit pixel array including a photodiode array, a color filter array, a micro-lens array, and a grid isolation structure laterally separating adjacent color filters. The grid isolation structure includes a first low-n grid, a second low-n grid underlying the first low-n grid, and a metal grid within the second low-n grid, the first low-n grid being narrower than the second low-n grid. The color filter array includes color filter matrixes, all color filter matrixes have the same arrangement pattern. Sizes of color filters in each color filter matrix vary depending on locations of the color filters in the color filter matrix. In an edge portion, a distance between a center of a color filter matrix and a center of a corresponding unit pixel matrix in plan view varies depending on a location of the unit pixel matrix in the CMOS image sensor.

An array device (100) of light emitting and / or light receiving diodes (102) is disclosed, comprising: - a stack of a first semiconductor layer (106) and a second semiconductor layer (108) according to different types of doping; - a plurality of first channels (112) passing through the stack and surrounding a region of the stack in which a plurality of diodes are formed; - a plurality of dielectric portions (114) arranged in the first channels and covering flanking faces of said region over an entire thickness of the second layer and a first part of a thickness of the first layer; - a first conductive portion (116) arranged in the first channels, covering flanking faces of said region over a second part of the thickness of the first layer and forming a first electrode of the diodes of said region; - at least one second channel (118) partially passing through the first layer and separating a portion of the first layer from the diodes of said region.

The embodiment of the application provides a voltage-controlled oscillator, an oscillator circuit, a chip and an electronic device, relates to the technical field of communication or radar detection, and can improve the linearity of the voltage-controlled oscillator. The voltage-controlled oscillator comprises a voltage-controlled oscillator resonant cavity, an even harmonic generator circuit and a self-mixing tripler circuit. The voltage-controlled oscillator resonant cavity comprises a voltage change diode array and a first mode switching capacitor. The even harmonic generator circuit comprises a group of cross-coupled tubes, one end of the group of cross-coupled tubes is electrically connected to differential two ends of the voltage-controlled oscillator, and the group of cross-coupled tubes simultaneously serves as an even harmonic generator and is electrically connected to the self-mixing tripler circuit. The self-mixing tripler circuit comprises a differential unit and a resonant cavity, and one end of the self-mixing tripler circuit is electrically connected to the even harmonic generator circuit. The low-frequency voltage-controlled oscillator and the self-mixing tripler circuit realize current multiplexing, the even harmonic generator circuit serves as an even harmonic generator of the self-mixing tripler in addition to serving as negative resistance of the oscillator, and the linearity of the millimeter wave frequency source is improved.

The present application relates to the technical field of furniture detection, and relates to a device for detecting the smoothness of the inner wall of a hole in solid wood furniture, comprising a support and a detection unit, the support being used for arranging and adjusting the direction and angle of the detection unit, the detection unit comprising a fiber bundle probe and a main component, the fiber bundle probe being used for emitting light and receiving reflected light of the inner wall of the hole in the solid wood furniture to detect the smoothness, the fiber bundle probe comprising one emitting fiber and a plurality of receiving fibers, the emitting fiber being located at the center and the plurality of receiving fibers being uniformly distributed around the emitting fiber; the main component being connected with the fiber bundle probe and being used for providing a light source and processing reflected light signals, the main component comprising a laser diode, a programmable laser drive circuit, a MEMS micromirror array, a photodiode array and a microprocessor, the present application realizes non-contact detection through emitting and receiving light, completely avoids physical damage to the hole wall of the wood, and is particularly suitable for quality control of high-grade solid wood furniture.

The invention provides a system and method for detecting the content of a corrosion inhibition additive in cooling liquid, specifically, the system comprises a liquid chromatograph, a diode array detector DAD and an electric fog detector CAD which are sequentially connected in series, the liquid chromatograph comprises a mobile phase pump, an automatic sampler and a column oven, and a chromatographic column is arranged in the column oven; wherein the mobile phase pump is used for mixing different mobile phases according to a preset proportion and then conveying the mixed mobile phases to the automatic sample injector; the automatic sample injector is used for injecting the mobile phase from the mobile phase pump into the to-be-detected cooling liquid and flushing the to-be-detected cooling liquid injected with the mobile phase to the chromatographic column; the column oven is used for controlling the column temperature of the chromatographic column; the chromatographic column is used for performing chromatographic separation on the corrosion inhibition additive in the to-be-detected cooling liquid; the DAD is used for detecting the corrosion inhibition additive containing the benzene ring in the cooling liquid to be detected; the CAD is used for detecting the polybasic aliphatic carboxylic acid type corrosion inhibition additive in the cooling liquid to be detected.

The application discloses a kind of visual haptic sensor and measurement method based on multiple light field switching, sensor includes shell, camera, light emitting diode array, development board, contact body, depth reconstruction module and six-dimensional force measurement module.Light emitting diode array contains RGB three color light emitting unit and ultraviolet light emitting unit, and double light field switching is driven by development board.Contact body contains reflective layer, mark layer with UV ink mark point, transparent layer and acrylic plate.Under RGB light field, contact image is collected by camera, and depth reconstruction module predicts gradient field by neural network and reconstructs three-dimensional topography based on Poisson equation;Under ultraviolet light field, UV light excitation mark point development, six-dimensional force measurement module extracts mark point displacement field, and pre-trained neural network is predicted by cross-modal contrast learning six-dimensional force load.The application realizes the functional integration of three-dimensional topography reconstruction and six-dimensional force estimation by multiple light source active switching, and is suitable for robot fine operation scene.

A scanning display with short-circuit detection capability includes: a display device comprising a common-cathode light-emitting diode array including multiple scan lines and multiple data lines; and a data device including multiple driving units. Each driving unit includes a current driving circuit and a detection circuit. The current driving circuit has an output terminal electrically connected to a corresponding data line among the data lines, and is controlled by a pulse width control signal to generate one of a driving current and a first clamping voltage at the output terminal and output it to the corresponding data line. The detection circuit detects the voltage at the output terminal of the current driving circuit and generates a detection result indicating whether the corresponding data line is abnormal based on the voltage at the output terminal and a detection timing signal.

The embodiment of the application provides a kind of based on integrating sphere light source's photosensitive diode multispectral calibration device and method, for by dark current measurement, photocurrent correction and wavelength response fitting, photosensitive diode array is carried out wide band multispectral calibration.The device of the application includes integrating sphere device, multi-band adjustable light source module, the photosensitive diode array to be calibrated and control and analysis unit;The inner wall of integrating sphere device is high reflectivity diffuse reflection material;Integrating sphere device further includes trap detector, and trap detector is used for real-time monitoring the reflection loss of the inner wall of integrating sphere device;Trap detector is connected with control and analysis unit communication;Multi-band adjustable light source module is accessed integrating sphere device;The photosensitive diode array to be calibrated is composed of multiple photosensitive diodes;Control and analysis unit and multi-band adjustable light source module, the photosensitive diode array to be calibrated establish communication connection.

A light-emitting diode (LED) array includes an array of pixel components and a pulse width modulator. The pulse width modulator generates a pulse width modulation (PWM) signal to control the duty cycle of each pixel. Each pixel component includes an LED, a switching circuit, and a closed-loop circuit. The switching circuit receives the PWM signal and alternately turns the LED on and off based on the PWM signal. The closed-loop circuit regulates the LED current supplied by the switching circuit to the LED based on a feedback signal received from the switching circuit.

The application discloses a path planning control method and system based on a laboratory carrying robot, and belongs to the technical field of robots, and comprises the following steps: constructing a multi-dimensional semantic map, marking a functional entity attribute structure body in a semantic layer, and refreshing a state word to a dynamic layer through a Modbus protocol; switching a visual servo mode when entering a docking preparation area, identifying a first marker at a long distance to generate a transition path, identifying an infrared light-emitting diode array at a short distance to obtain a sub-centimeter pose, and completing docking by using a model predictive controller integrating a loading quality and a wheel-ground friction coefficient; monitoring currents of a lifting motor and a driving motor, and executing stress release when the currents exceed a threshold value; collecting historical operation data, uploading the historical operation data to a cloud, identifying a high-frequency congestion area through clustering, and feeding back and updating geometric layer cost weight values.

A scanning display with short-circuit detection function and a scanning device thereof, comprising: a display device including a common-cathode light-emitting diode array and including multiple scan lines and multiple data lines; and a scanning device including multiple scanning circuits. Each scanning circuit includes a voltage generator and a detector. The voltage generator has an output terminal electrically connected to a corresponding scan line and is controlled to generate one of a reference voltage and a clamping voltage to the corresponding scan line. The detector detects the voltage at the output terminal of the voltage generator and generates a detection result indicating whether the corresponding scan line is abnormal based on the voltage at the output terminal and a detection timing signal.

The application belongs to the technical field of optical devices, and provides a single-photon avalanche diode array, a receiving sensor and a laser radar. At least two SPAD units are arranged in an array. A microlens converges incident light onto a corresponding SPAD unit. A back metal grid connects the SPAD unit and a corresponding external electrode. A first dielectric layer is arranged between the microlens and the SPAD unit. A second dielectric layer is arranged between the SPAD unit and a front metal trace layer. The front metal trace layer is electrically connected to the corresponding SPAD unit through a contact metal wire. By arranging a deep groove isolation column between adjacent SPAD units and arranging a metal filling structure between the deep groove isolation column and the back metal grid, self-excited photons generated by the SPAD unit excited by incident light can be isolated, the self-excited photons can be prevented from entering adjacent SPAD units through the grid gap, the probability of photon crosstalk can be reduced, and the optical crosstalk of the device can be reduced.

An electronic device may include a display having a monolithic array of light-emitting diodes mounted to a surface of a substrate layer. The diodes may include contact pads. Driver circuitry may independently drive each of the diodes in the array using drive signals. The driver circuitry may be formed on a driver integrated circuit. Bond pads may be formed on a surface of the integrated circuit. Copper pillars may be grown on the bond pads. In another suitable arrangement, the driver circuitry may be formed on a driver printed circuit board coupled to an interposer by a flexible printed circuit. The interposer may include bond pads and copper pillars grown on the bond pads. The contact pads on each of the diodes may be simultaneously bonded to the copper pillars. A surface of the substrate layer may be patterned to form light redirecting elements if desired.

The invention belongs to the technical field of optical devices, and provides a single photon avalanche diode array, a receiving sensor and a laser radar, at least two SPAD units are arranged in an array, a microlens converges incident light to the corresponding SPAD unit, a back metal grid connects the SPAD unit and a corresponding external electrode, a first dielectric layer is arranged between the microlens and the SPAD unit, and a second dielectric layer is arranged between the microlens and the SPAD unit. The second dielectric layer is arranged between the SPAD units and the front metal wiring layer, and the front metal wiring layer is electrically connected with the corresponding SPAD units through contact metal wires. The deep groove isolation columns are arranged between the adjacent SPAD units, and the metal filling structures are arranged between the deep groove isolation columns and the back metal grids, so that self-excitation photons generated when the SPAD units are excited by incident light can be isolated, the self-excitation photons are prevented from entering the adjacent SPAD units through grid gaps, the probability of photon crosstalk is reduced, and the optical crosstalk of the device is reduced.

The application provides a touch component and a touch display device. The touch component comprises a touch layer, and the touch layer comprises a plurality of touch units. Each touch unit comprises: a first electrode arranged along a first direction, the first electrode comprising a first trunk electrode extending along the first direction and at least one first branch electrode extending from the first trunk electrode; and a second electrode arranged along a second direction, the second electrode being electrically insulated from the first electrode, the second electrode comprising a second trunk electrode extending along the second direction and at least one second branch electrode extending from the second trunk electrode, and at least part of the first branch electrode and at least part of the second branch electrode are arranged in a cross manner. At least one of the first electrode and the second electrode is provided with a hollow part. By providing the hollow part in at least one of the first electrode and the second electrode, the parasitic capacitance formed between at least one of the first electrode and the second electrode and a cathode of an organic light-emitting diode array layer is reduced.

The embodiment of the invention provides a display device with a controllable light path, display equipment and communication equipment, and relates to the technical field of display, the display device with the controllable light path comprises a light emitting diode array and light valve glass which are arranged in a stacked mode, and the light valve glass comprises a first glass layer, a light valve control layer and a second glass layer which are sequentially arranged in a stacked mode; the light valve control layer comprises a prism structure and a liquid crystal material, the liquid crystal material is of an oval structure, the refractive index corresponding to the long axis of the liquid crystal material is different from the refractive index corresponding to the short axis of the liquid crystal material, and the refractive index corresponding to the long axis of the liquid crystal material is the same as the refractive index of the prism structure. The refractive index relationship between the liquid crystal material and the prism structure is changed by switching the arrangement direction of the liquid crystal molecules, so that the propagation form of light is controlled, and the controllable adjustment of a light path is realized. The method is suitable for different scenes such as conventional display, privacy peep prevention and directional communication, and the applicability and flexibility of the display device under various use requirements are improved.

The invention relates to a method for manufacturing an optoelectronic device (1) comprising an array of diodes (D1, D2, D3) and an array of color conversion portions (P1, P2), the method comprising the steps of: providing an array of diodes (D1, D2, D3) and an upper electrode layer (E1, E2, E3); depositing a dielectric layer (26) having a substantially zero surface potential; applying a potential difference between the electrode (2) and the first upper electrode layer (E1) such that a first pattern (M1) having a non-zero surface potential is formed in the dielectric layer (26); generating a first color conversion portion (P1) by contacting the dielectric layer (26) with a colloidal solution (S1) comprising first photoluminescent particles (p1).

The utility model discloses a gamma camera, a detector and a CT machine. The gamma camera comprises a scintillator, a collimator, an S < iPM > array, a signal transmission unit, an analog-to-digital conversion unit and a data processing unit. The collimator is arranged in the light incident direction of the scintillator, comprises N light through holes arranged in a matrix manner, and is used for shielding non-vertical incident rays; the S iPM array is matched with the scintillator and the collimator to ensure that photons excited by rays emitted from each light through hole after passing through the scintillator are captured by at least one S iPM; the analog-to-digital conversion unit comprises a Q-V conversion circuit, a single-ended-differential voltage conversion circuit, a differential voltage amplification circuit and an AD conversion circuit, so that a two-stage integrator and a converter are formed, and the signal precision is improved; and the signal transmission unit can adopt a multi-channel connector or a diode array, so that resource occupation is reduced. The detector is formed by splicing gamma cameras into a whole ring and is applied to a CT machine, high-precision detection can be achieved under low-dose rays, and the imaging resolution ratio and accuracy are improved.

A light emitting diode (LED) array includes bottom reflectors patterned as an array of closed shapes on a top plane of a base layer for III-N growth. A three-dimensional III-N structure is epitaxially grown around the array of closed shapes and extending above the bottom reflectors. The three-dimensional III-N structures is a contiguous crystalline structure extending across the array. A laterally grown III-N layer is formed in contact with both the reflectors and the three-dimensional III-N structures, and III-N LED layers are grown on the laterally grown layer. One or more top reflectors are grown or deposited on the III-N LED layers and located over the bottom reflectors.

An electronic system for evaluating temperature differences between different pairs of thermal diodes to evaluate the quality of a thermal interface material layer used for cooling the electronic system. Formation of a thermal diode array on a semiconductor die allows the measurement of temperature and temperature differences between a plurality of the thermal diode pairs arranged in an orthogonal configuration. The temperature differences between the thermal diode pairs can indicate the presence of irregular distribution of the thermal interface material. Such components with thermal interface material flaws can be rejected during manufacture to improve manufacturing quality.

The invention discloses an oxygen cabin intelligent control system based on a GaN MQW diode array, which relates to the technical field of photoelectron and intelligent control, and comprises an external control module and an internal control module, a plurality of GaN MQW diodes are deployed on an oxygen cabin to form a diode array, the diode array comprises a lighting mode, a detection mode and a time division multiplexing mode, and when an oxygen cabin door is in a closed state, an external control module is used for configuring the diode array into the detection mode, whether the cabin door is opened or not is judged through a preset password sequence, and an internal control module is triggered; the internal control module is used for configuring the diode array to be in a time division multiplexing mode, and when a user displays different gesture actions, different internal control functions of the oxygen cabin are triggered. According to the invention, traditional oxygen cabin contact type operation is abandoned, multiple functions of cabin door control, illumination, internal control and the like of the oxygen cabin are realized through the GaN MQW diode array, the integration level and the safety of the oxygen cabin system can be effectively improved, and the equipment deployment and maintenance cost is greatly reduced.

This invention relates to the field of succinic anhydride hydrolysis reaction detection technology, and discloses a method for detecting the succinic anhydride hydrolysis reaction rate using high performance liquid chromatography (HPLC). The method includes the following steps: (1) diluting the succinic anhydride hydrolysis reaction product with acetonitrile to obtain the test solution; (2) analyzing the test solution using HPLC, with a diode array detector, a reversed-phase column, and a mobile phase of a mixture of acetonitrile and water, and quantifying using the external standard method. The method provided by this invention utilizes ultra-high performance liquid chromatography (UHPLC) to simultaneously determine the content of succinic anhydride and succinic acid in the reaction solution, and has the advantages of rapid detection, simple method, and good repeatability.

This invention discloses a method for the simultaneous detection of six urease / nitrification inhibitors in fertilizers, resistant to matrix interference. The method is used to simultaneously determine six inhibitors in fertilizers, including thiourea, dicyandiamide, n-butylthiophosphoric triamine, n-propylthiophosphoric triamine, 3,4-dimethylpyrazole phosphate, and 2-chloro-6-trichloromethylpyridine. The procedure includes weighing the fertilizer sample and obtaining a sample extract. A specific chromatographic column and mobile phase are selected, and separation is performed according to a gradient elution program designed for the polarity span of the six inhibitors. An ultraviolet detector or a diode array detector is used, with the detection wavelength automatically switched over time during a single analytical run. Finally, the external standard method is used to calculate the content of each of the six inhibitors in the fertilizer sample based on a standard curve. This invention achieves high-throughput detection with "one injection, six results".

Described is a light emitting diode (LED) array comprising: a plurality of phosphor-converted light-emitting diodes (PC-LEDs) arranged in a grid on a solid tile support, a reflective coating surrounding PC-LEDs in place, each of the PC-LEDs comprising: a die including an under bump metallization (UBM) affixing the PC-LED to a surface of the solid tile support; a phosphor layer affixed to a surface of the die opposite the UBM, and a transparent cover layer on the phosphor layer.

The invention relates to the technical field of solid lasers, in particular to a pumping device and a solid laser. The pumping device comprises a laser crystal; the flow guide tube is a hollow cylindrical tube, and the laser crystal is arranged in the flow guide tube; the metasurface lens group is arranged on the outer side wall of the flow guide pipe; the output end of the laser diode array is arranged corresponding to the metasurface lens group; wherein the metasurface lens group is configured to collimate the divergence angle of the output light of the laser diode array. Therefore, the collimation of the output light of the laser diode array can be realized through the metasurface lens group arranged on the flow guide tube, so that the output light can enter the flow guide tube at a vertical angle and then enter the laser crystal, and the pumping of the laser crystal is realized. After being collimated by the metasurface lens group, light emitted by the laser diode is converted into parallel light which is uniformly distributed, so that uniform pumping of the gain medium is realized, and the influence of local heat accumulation on the quality of an emergent light beam is effectively avoided.

A method, an electronic device, and a computer-readable storage medium are provided. The method includes: obtaining a calibration value of avalanche breakdown voltage of a single-photon avalanche diode array, calibration values of parameters of the single-photon avalanche diode array, and a temperature drift curve of the single-photon avalanche diode array; obtaining temperature of at least two positions of the single-photon avalanche diode array in a circumferential direction according to the calibration value; obtaining a temperature model of the single-photon avalanche diode array according to the temperature of at least two positions; and determining a calibration value of avalanche breakdown voltage of the single-photon avalanche diode array according to the temperature model, the temperature drift curve, and the calibration value of the parameter of the single-photon avalanche diode array and adjusting the input voltage of the single-photon avalanche diode array accordingly.