219 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.

The invention relates to an optical fiber power 24-path synchronous measurement method and system based on leakage light, and belongs to the technical field of optical fiber communication monitoring. The method comprises the steps that bending force is applied to a to-be-measured optical fiber through a micro-bend clamping coupler, and a leakage light signal is captured through a V-shaped angle positioning structure and a double-photosensitive sensor; and high-precision conversion and amplification of optical-electric signals are realized by combining 24 paths of parallel InGaAs-PIN photodiode arrays and a high-speed logarithmic amplifier. 24 paths of signals are synchronously acquired through an SPI protocol by adopting a master-slave single-chip microcomputer architecture, data processing is performed by combining a moving average filtering algorithm and a voltage-optical power conversion algorithm, and finally real-time monitoring of multi-channel optical power is realized through a data transmission interface. The device supports modular design, has the advantages of being non-invasive, low in additional loss, short in response time and the like, and is suitable for multi-channel online monitoring and maintenance of an optical fiber communication network.

A security floodlight has a light panel mounted in a housing for illuminating an area in proximity to the housing, an array of light emitting diodes (LEDs) mounted in the housing and arranged in a horizontal single row, and a controller configured activate the light panel based on an input signal and to sequentially activate each of the LEDs in the array of LEDs in a rotating sequence only when the light panel is not activated. The input signal may be received from a proximity sensor mounted in the housing that indicates the detection of movement in an area in close proximity to the security floodlight. The rotating sequence simulates operation of a low-light security camera by sequentially illuminating each LED in the array of LEDS in a rotating manner from a first end of the horizontal single row to a second end of the horizontal single row.

The invention relates to a controlled environment agriculture for plant cultivation using artificial lights. The artificial lights comprise an array of light emitting diodes fabricated using gallium nitride, each gallium nitride operable over a wavelength of 380 nm to 900 nm. The array of light emitting diodes include at least one integrated drive controller and at least sensor. The controlled environment agriculture includes at least an imaging device and a control module. The control module comprises a machine learning module and an aggregator module configured connected to at least one sensor and at least one imaging device to aggregate various parameters including environmental data, and plant phenotyping data associated with the plants. Based on the aggregated The control module determines the spectral requirements of the plants for optimal growth based on at least one parameter aggregated from at least one sensor, at least one imaging device and a database to adjust the spectral light in the array of light emitting diodes in real time. The control module is associated with a power module for regulating the electrical power required by the array of light emitting diodes to optimize power consumption. In at least one implementation, the control module and the power module are dynamically controlled in real time by implementing machine learning algorithms to automate the controlled environment for agriculture to optimize and control the spectral and power requirements of the array of light emitting diodes.

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.

An apparatus includes a light-emitting diode (LED) driver circuit, one or more LEDs of an LED array, and an electronic switching circuit. The LED driver circuit is configured to generate an electric current. The one or more LEDs are electrically connected to the LED driver circuit. The electronic switching circuit is electrically connected to the one or more LEDs and configured to be placed in one of multiple switching configurations. The electronic switching circuit is further configured to direct a portion of the electric current away from the one or more LEDs, such that a remaining portion of the electric current drives the one or more LEDs. The portion of the electric current corresponds to the one of the multiple switching configurations.

The present invention discloses a polarization camera system that integrates a polarization sensor with a homogeneous dispersive retarder to detect and measure simultaneously the four components of the Stokes vector of polarized light. Unlike existing methods that require complex setups or expensive components, this approach uses a single sensor setup, combining the division of focal plane method with wavelength sensitivity inherent in many camera sensors. The system (1) comprises: a polarization sensor (2) having a polarizer array (2a) and a color channel filter (2b); a photodiode array (2c) configured to measure at least four intensities; a light entrance (4); a microprocessor (5); a first homogeneous dispersive retarder (3). The first homogeneous dispersive retarder is configured to introduce wavelength-dependent retardation δ(λ) to the incident polarized light, so that [δ(λi) ≠ δ(λj)]; and, the microprocessor is configured to calculate a complete Stokes vector of incident polarized light from the measured intensities.

The utility model relates to the technical field of light emitting diodes, and discloses a packaging support for a light emitting diode array. Comprising a shell and further comprises a light-emitting diode body arranged in the shell, a lead is arranged at the bottom of the light-emitting diode body, a mounting frame is fixedly connected to the inner wall of the shell, a connecting frame is fixedly connected to the inner wall of the mounting frame, and a guide wheel for protecting the lead is arranged on the inner wall of the connecting frame. According to the utility model, the mounting sleeve is clamped into the mounting seat, so that the effect of arranging and packaging the light-emitting diode bodies is achieved, the light-emitting diode bodies can be conveniently disassembled and overhauled subsequently, the lead is protected through the guide wheel and the protective pad, the lead is prevented from being abraded, heat in the shell can be absorbed through the heat-conducting fins, and the heat-conducting effect is improved. And under the action of the spring and the damper, the protection plate is driven to reset quickly, so that the impact force borne by the shell is reduced.

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 present application discloses a method for constructing a fingerprint of a gout compound decoction and its fingerprint and application, and belongs to the field of analytical detection technology. The method for constructing the fingerprint comprises the following steps: taking a test solution prepared from a gout compound decoction; performing HPLC-SPD detection on the test solution to obtain a fingerprint of the gout compound decoction, wherein the high performance liquid chromatography detection conditions are: using a C18 chromatographic column; using an aqueous solution containing 0.1% to 0.2% phosphoric acid as mobile phase A, and acetonitrile as mobile phase B for gradient elution; the flow rate is 0.8 to 1 mL / min, the column temperature is 25 ° C, the injection volume is 5 to 10 μL, and the diode array detector is scanned at 190-400 nm full band. The present application conducts a comprehensive and systematic analysis of the chemical components in the gout compound decoction, providing a basis for in-depth research on quality control and the basis of pharmacological substances.

The application belongs to the technical field of micro light emitting diode display, and provides a micro light emitting diode array transfer method, which comprises the following steps: micro light emitting diode epitaxial structure preparation, P-type electrode layer array preparation, micro light emitting diode mesa array etching, substrate mesa array etching, first bonding layer and second bonding layer preparation, transfer substrate bonding, epitaxial substrate separation, buffer layer etching, N-type electrode layer preparation, third bonding layer preparation and transfer substrate cutting; the application forms a corrosion liquid channel in the epitaxial substrate by using a deep etching process, which is helpful to the rapid peeling of the epitaxial substrate and the micro light emitting diode mesa array, and improves the transfer efficiency of the micro light emitting diode.

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.

The invention belongs to the technical field of pesticide detection, and relates to a method for distinguishing pyriproxyfen technical for pesticide application and hygienic application. According to the method, a pyriproxyfen raw medicine sample is analyzed through a high performance liquid chromatography-diode array detector (HPLC-DAD), and the purpose category of the sample is judged by utilizing isomer chromatography spectrum characteristics (ultraviolet spectrum characteristics). Specifically, the pyriproxyfen active compound for pesticide application only shows a single main peak in a chromatogram; a plurality of chromatographic peaks (main peaks and isomer peaks) can appear on the technical pyriproxyfen for sanitation under specific conditions, and the ultraviolet spectrograms of the peaks are consistent. According to the method, whether a pyriproxyfen isomer peak exists in a sample or not is detected, so that whether the active compound belongs to agricultural application or sanitary application is quickly identified. The method has the advantages of simplicity and convenience in operation, high specificity and high practical application value.

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.

A camera supporting color temperature detection disclosed by the present invention comprises a lens, a base, an infrared optical filter and a circuit board, the circuit board is provided with an image sensor, and the image sensor comprises a first optical filter array, a photodiode array, a sampling and processing circuit and a second optical filter array. The first optical filter arrays and the second optical filter arrays are installed above the photodiode array side by side, the second optical filter arrays are located at edge pixels of the first optical filter arrays, the photodiode array is connected with the sampling and processing circuit and outputs signals to the sampling and processing circuit, a separation area is arranged between every two sets of second optical filter arrays, and the separation area is located between every two sets of second optical filter arrays. An external detection light source enters the second optical filter array, other spectrums are filtered out, then the external detection light source enters the photodiode array and is converted into electric signals, the electric signals are sampled and processed by the sampling and processing circuit to obtain irradiation brightness of different spectrums of the external detection light source, and the color temperature of the external detection light source is obtained through calculation.

A vehicular lighted exterior rearview mirror system includes a lighted exterior rearview mirror assembly and a light module. With the mirror assembly attached at a side of a vehicle, the light module is at least in part disposed at a portion of a mirror head of the lighted exterior rearview mirror assembly that faces forward in a direction of forward travel of the vehicle. The light module includes a two dimensional array of light emitting diodes (LEDs) that has at least two rows of LEDs, each row of LEDs having a plurality of LEDs. With the mirror assembly attached at the vehicle, the two dimensional array of LEDs, when electrically powered, emits light at least in the direction of forward travel of the vehicle. The LEDs of the two dimensional array of LEDs may be controlled responsive to a turn signal of the vehicle being actuated.

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 invention relates to the technical field of photoelectricity, and discloses a photodiode array, an optical encoder receiving chip and an optical sensing device. The photodiode array comprises a plurality of photodiode sets, each photodiode set comprises a first photodiode group and a second photodiode group, and the first photodiode group and the second photodiode group have a 90-degree phase difference and are configured into two columns; the photodiodes in the first photodiode group and the photodiodes in the second photodiode group have a 90-degree phase difference. According to the invention, the first photodiode group and the second photodiode group with the phase difference of 90 degrees are respectively configured into two columns, only one photodiode needs to be configured in one line of the coding wheel, and the line width of the coding wheel can be reduced by two times to the maximum extent, so that the bipolar process can meet the requirements of a high-speed LPI optical encoder receiving chip.