Patents
Literature
Patsnap Eureka AI that helps you search prior art, draft patents, and assess FTO risks, powered by patent and scientific literature data.

178results about How to "Reduce reflection" patented technology

Polishing device of hub surface defect detection system

The invention discloses a polishing device of a hub surface defect detection system, which comprises a front polishing mechanism for polishing when acquiring a front image of a hub, a side polishing mechanism for polishing when acquiring a side image of the hub, and a back polishing mechanism for polishing when acquiring an inner cavity image of the hub, the front lighting mechanism comprises a first light source and a plurality of area light sources, all the area light sources define a containing cavity for containing the first light source and the first camera, the first light source is a strip-shaped combined light source, and the first light source and the first camera are controlled by the robot to move. According to the lighting device of the hub surface defect detection system, the surface light source fixedly installed on the front face provides uniform background lighting, uniform light distribution is ensured, and reflected light and shadows are reduced; the strip-shaped combined light source can adjust the lighting position and posture along with the robot, the lighting requirements of different positions, different angles and different defects can be met, and the hub surface image collection quality and the defect detection accuracy are improved.
Owner:HANGZHOU YINGSHIMAI INTELLIGENT TECHNOLOGY CO LTD

Automatic comprehensive detection flaw detection equipment for railway line

The invention relates to the technical field of railway line flaw detection, in particular to railway line automatic comprehensive flaw detection equipment which comprises two steel rails and a flaw detection car and further comprises a C-shaped mounting plate, a buffer assembly, a waist detection mechanism and a bottom detection mechanism. A first fixing rod is transversely arranged in the C-shaped mounting plate, fixing sleeves are slidably connected to the two ends of the first fixing rod correspondingly, and balance assemblies are arranged at the ends, away from each other, of the two fixing sleeves correspondingly. The device has the advantages that different detection assemblies are arranged for different detection areas, so that steel rail detection of different parts is more efficient and accurate, it is ensured that different types of defects can be detected, the detection period is shortened, the balance assembly and the buffer assembly cooperate with each other to enable the head detection assembly to keep a dynamic balance state, and the detection efficiency is improved. The probe is effectively protected from vibration damage, and the adaptability of the probe to the change of the steel rail and the detection stability of the probe are improved.
Owner:GUANGJUN SPECIAL ENGINEERING (SHANXI) CO LTD

Gradient design type shock tube vibration and noise reduction device for engineering

The invention relates to the technical field of vibration and noise reduction of shock tube testing devices in the engineering anti-explosion industry, in particular to a gradient design type shock tube vibration and noise reduction device for engineering. Comprising a shock tube, an injection silencing module and a vibration and noise reduction module. The shock tube is connected with the injection silencing module; the vibration and noise reduction module is connected with the injection noise elimination module; the shock tube, the injection noise elimination module and the vibration and noise reduction module are coaxially arranged. According to the gradient design type shock tube vibration and noise reduction device for engineering, airflow and sound wave propagation paths are optimized through gradient design, so that noise and vibration generated in the working process of the shock tube are effectively reduced, and meanwhile the aerodynamic performance and operation efficiency of the shock tube are kept. The vibration and noise reduction module formed by periodically arranged functional units forms an acoustic black hole structure, compared with a traditional method, the acoustic black hole structure has better acoustic and elastic wave control physical characteristics, the propagation speed of shock waves can be effectively reduced, and reflection at the tail end of a boundary is reduced.
Owner:SOUTHEAST UNIV

Optical imaging lens

The invention provides an optical imaging lens. The optical imaging lens can be used for near-infrared band imaging, the optical imaging lens comprises a lens barrel, a lens group and a spacing element group, and the lens group comprises a first lens, a second lens, a third lens and a fourth lens; the spacing element group comprises a first spacing element and a second spacing element, and the effective focal length f2 of the second lens, the center thickness CT2 of the second lens on the optical axis and the distance EP12 between the image side surface of the first spacing element and the object side surface of the second spacing element in the extension direction of the optical axis meet the condition that f2 / (CT2 + EP12) is greater than or equal to 1.03 and less than or equal to 2.88; the curvature radius R3 of the object side surface of the second lens and the outer diameter D1m of the image side surface of the first spacing element satisfy the following relation:-1.93 < = R3 / D1m < =-0.41. The optical imaging lens solves the problem of serious stray light caused by improvement of assembly stability of an optical imaging lens in the prior art.
Owner:ZHEJIANG SUNNY OPTICAL CO LTD

PIV (particle image velocimetry) technology-based super-gravity test method for deformation characteristics of reinforced embankment ribs

ActiveCN119666617AEffectively measure deformation characteristicsFully obtained deformationMaterial strength using repeated/pulsating forcesImaging processingClassical mechanics
The invention discloses a reinforced embankment rib deformation characteristic supergravity test method based on a PIV technology. A test device adopted by the method comprises a supergravity model box with an observation window, an industrial camera and an image processing system. The reinforced embankment model is arranged in the supergravity model box, the supergravity model box and the industrial camera are arranged in the supergravity geotechnical centrifuge, a lens of the industrial camera is aligned to the reinforced embankment model through an observation window on the supergravity model box, and an identification point is arranged on one side of the observation window of the reinforced embankment model. Under the high gravity field provided by the centrifugal machine, the industrial camera photographs the deformation process of the reinforced embankment model, and the displacement amount of the identification point in the image is analyzed through the image processing system, so that the deformation amount of the reinforced material can be obtained. And the parameters are compared with measurement parameters of a laser displacement meter above the reinforced embankment model and graduated scales pasted on the periphery of an observation window, so that the deformation characteristics of the reinforced material and the overall deformation field of the reinforced embankment model are obtained.
Owner:TIANJIN PORT ENG INST LTD OF CCCC FIRST HARBOR ENG +2

Waterproof membrane with high acoustic sensitivity and preparation method thereof

The preparation method comprises the following steps: S1, in an inert atmosphere, adding hydroxyl-terminated polybutylene and toluene diisocynate into a reaction kettle, and generating a polyurethane prepolymer under the catalysis of dibutyltin dilaurate; s2, adding a chain extender into the polyurethane prepolymer to carry out chain extension reaction; s3, adding a waterproof functional body, methacryloyloxypropyl polyhedral oligomeric silsesquioxane and a silane coupling agent K560 into the polyurethane subjected to the chain extension reaction, uniformly mixing, and then forming a film, so as to obtain the high-waterproofness waterproof film. The waterproof film of the present invention has excellent acoustic sensitivity and waterproof performance.
Owner:慈聚新材科技(江苏)有限公司

A secondary return optical path scanner device and calibration method

The present invention discloses a secondary return optical path scanner device and calibration method, belonging to the field of scanner technology, the device includes an optical path return module, the optical path return module is arranged between the optical lens and the CMOS, used for controlling the optical path, splitting a single section of the optical path into multiple sections of the optical path; wherein the optical path return module includes a primary return mirror, a secondary return mirror and a return bracket, the primary return mirror and the secondary return mirror are assembled on the return bracket, the primary return mirror and the secondary return mirror are used to return the optical path, and adjust the position and posture of the light incident on the CMOS. The present invention utilizes the optical path return, optimizes the layout, achieves the purpose of miniaturization, can freely adjust the position and posture of the core components, so that the scanner device has greater variability in structure, and improves the space utilization rate of the whole machine.
Owner:HEFEI JUNDA HI TECH INFORMATION TECH

An optical module

The optical module provided by the present disclosure comprises a circuit board, a base, a first light emitting component, a second light emitting component, a first light receiving component and a second light receiving component. The circuit board has a first notch part and a second notch part on the surface, and the base is embedded in the first notch part and the second notch part, so as to fix the base on the circuit board. The first light emitting component and the second light emitting component are located on the top surface of the base. The first light emitting component and the second light emitting component are respectively located in different notch parts, so that the wiring space of the circuit board between the first notch part and the second notch part can be used to increase the wiring area. The top surface of the base is used to carry the first light emitting component and the second light emitting component, and the top surface of the base faces the upper surface of the circuit board. The first light receiving component and the second light receiving component are arranged on the lower surface of the circuit board. The three-dimensional deployment and integrated deployment are realized, which is more conducive to wiring and reducing the occupation of the circuit board space, so as to realize multi-channel light emitting and light receiving.
Owner:HISENSE BROADBAND MULTIMEDIA TECH

A DSP camera control circuit for a golf simulation system detector

The utility model discloses a DSP camera control circuit of golf simulation system detector, 40 feet, 59 feet, 65 feet, 68 feet, 87 feet, 77 feet, 66 feet, 67 feet of blackfin digital signal processor U2 respectively correspond to be connected with resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8, resistance R9, 8 feet, 10 feet, 28 feet, 24 feet, 25 feet, 32 feet, 33 feet, 30 feet, 31 feet of CMOS image sensor U4 respectively correspond to be connected with resistance R12, resistance 13, resistance 14, resistance R15, resistance R16, resistance R17, resistance R10, resistance 11, resistance 19, the 23 feet of CMOS image sensor U4 is connected with CMOS logic chip U5, and the 5 feet of CMOS logic chip U5 connects electrolytic capacitor C2 and power supply end CAM3V3, and the resistance R18 is connected between the 1 foot and 3 feet of CMOS logic chip U5, and the 26 feet, 22 feet, 23 feet of CMOS image sensor U4 respectively correspond to be connected with resistance R20, resistance 21, resistance 22, and the resistance of the product plays current -limiting protection and impedance matching, and the protection circuit is prevented from being damaged.
Owner:GUANGZHOU CHIYI TECHNOLOGY CO LTD

Transmission tower grounding resistance measurement method based on multi-loop high-frequency synchronous excitation

PendingCN122860207Areduce disturbanceReduce on-site operation complexity
This invention discloses a method for measuring the grounding resistance of transmission towers based on multi-circuit high-frequency synchronous excitation, belonging to the field of power equipment testing and grounding resistance measurement technology. The method is implemented using a multi-circuit high-frequency signal excitation transmission device. First, a multi-circuit measurement calibration parameter library is established, a non-contact coupling unit is installed and the measurement parameters are initialized, then multiple synchronous high-frequency excitation signals are generated, amplified and dynamically impedance matched, and then non-contactly coupled to the grounding down conductor. Subsequently, multiple feedback signals are synchronously acquired and signal characteristics are extracted. Based on the feedback signals, multi-circuit synchronous closed-loop calibration is performed, the grounding impedance and grounding resistance measurements of each circuit are calculated, and anomalies are eliminated and weighted fusion is performed on the multiple measurement values ​​to obtain the final grounding resistance value. This invention eliminates the need to split the grounding down conductor, improving measurement efficiency, synchronization stability, and anti-interference capability.
Owner:国网山东省电力公司日照供电公司

An interactive teaching instrument and method of using the same

The application relates to the technical field of teaching instruments, and discloses an interactive teaching instrument and a use method thereof, which comprise a supporting assembly, the top of the supporting assembly is provided with a fixing assembly, the top of the fixing assembly is provided with an adjusting assembly, one side of the adjusting assembly is provided with a display assembly, the display assembly is provided with a light-shielding assembly, the supporting assembly comprises a base, pressure sensors are arranged at the lower ends of the four corners of the base, the fixing assembly comprises a fixing plate, the adjusting assembly comprises a rotating motor arranged at the bottom of the fixing plate, the application can flexibly adjust the angle position, effectively reduce the reflection, avoid affecting the teaching effect, actively remove dust from the display component, improve the display definition, timely intervene when the whole is in an unstable state, improve the stability of the whole, effectively protect the display component when the whole is tilted, and prevent the display component from being damaged.
Owner:HENAN XUNGU TECH CO LTD

Steel pipe surface defect detection device

The utility model relates to the technical field of pipe detection, in particular to an enhanced design of detection precision of a detection device. The utility model discloses a steel pipe surface defect detection device which can keep high-precision dynamic stability in the detection process, provide a clean detection environment and optimize the imaging precision of the steel pipe surface defect detection device. The detection device comprises a shell, an imaging assembly arranged in the shell and a clamping assembly used for clamping a steel pipe, and the shell is provided with a dustproof ring used for allowing the steel pipe to pass through. The clamping assembly comprises a downward pressing device moving in the vertical direction and a supporting roller arranged on a downward pressing path of the downward pressing device, and the supporting roller is used for supporting the bottom of the steel pipe and guiding the steel pipe to enter the shell through rolling movement.
Owner:ZHEJIANG JIULI HI TECH METALS CO LTD

Method and equipment for improving matching of measured pieces in attenuation measurement system

The invention discloses a method and equipment for improving matching of a measured piece in an attenuation measurement system, belongs to the field of radio metering, and comprises the method for improving matching of the measured piece in the attenuation measurement system, and the core of the method is that a precise matching absorption load is added in a front-end transmission system of the measured piece; energy transmission is realized on a waveguide wide side of the precise matching absorption load through a coupling hole; a transmission waveguide is additionally arranged above the coupling hole, and energy is transmitted to a measured piece in the forward direction; and a precise matching absorption load is added in the reverse direction to absorb energy in the reverse direction, so that the measured piece matching improvement equipment in the attenuation measurement system is formed, and finally the measured piece matching of the attenuation measurement system is improved. According to the method and the equipment, the impedance matching of the measured piece is improved by using the precise matching load, the voltage standing-wave ratio of the load level is realized, and the attenuation measurement accuracy is improved. The tested piece matching improvement equipment developed by using the method is directly connected to two ends of the tested piece in an attenuation measurement system, so that the impedance matching of the tested piece is improved.
Owner:BEIJING INST OF RADIO METROLOGY & MEASUREMENT

Optical lens with narrowband antireflection coating reflecting blue light

The present invention relates to an optical lens comprising a substrate and a multi-layer antireflection coating provided on at least one of the main surfaces of the substrate and comprising a stack of at least one layer having a high refractive index and at least one layer having a low refractive index, a spectral reflectance curve of the multi-layer antireflection coating for an angle of incidence in the range of 0 DEG to 15 DEG has a reflection peak centered on a wavelength in the range of 435-450 nm and having a maximum reflectance of less than or equal to 30% and a full width at half maximum of less than or equal to 90 nm, and a local reflectance minimum in the range of 380-420 nm of less than or equal to 2% and a multi-layer antireflection coating for the at least one major surface, the multi-layer antireflection coating providing the at least one major surface with: for an angle of incidence in the range of 0 to 15 degrees, the present invention relates to a light-emitting device comprising a light-emitting element, a light-emitting element, an average light reflection factor Rv of 380 nm to 780 nm of less than or equal to 2.5%, an average blue light reflection factor RmB1 of greater than or equal to 15% in the wavelength range of 420 nm to 450 nm of greater than or equal to 15%, an average blue light reflection factor RmB3 of greater than or equal to 15% in the wavelength range of 440 nm to 460 nm of greater than or equal to 15%, and a ratio RmB1 / RmB3 of less than or equal to 1.
Owner:ESSILOR INTERNATIONAL(COMPAGNIE GENERALE D OPTIQUE)

An infrared thermal imaging method

This invention provides an infrared thermal imaging method, relating to the field of infrared thermal imaging technology. The method utilizes a germanium infrared lens in an infrared thermal imaging system, whose surface is sequentially composed of subwavelength micro / nano structures and an anti-reflection film structure from the inside out. The infrared thermal imaging method includes: focusing target infrared radiation through the germanium infrared lens onto an infrared detection array; the infrared detection array converting the target infrared radiation into an electrical signal matrix; performing noise reduction and gain correction on the electrical signal matrix to obtain a preprocessed electrical signal matrix; performing temperature compensation on the preprocessed electrical signal matrix based on a temperature compensation formula and a transmittance temperature model to obtain a corrected signal matrix; and sequentially performing non-uniformity correction, image enhancement, and pseudo-color mapping on the corrected signal matrix before outputting and displaying the result. Using the method of this invention, higher transmittance, lower reflection loss, and more stable thermal imaging can be achieved.
Owner:BEIJING YILIAN TECHNOLOGY CO LTD

High-beam and low-beam module with cut-off line distance adjusting function

The utility model discloses a far and near light module with a cut-off line distance adjustable function, which comprises a lens, a decorative ring, small iron, a cut-off line baffle, a condenser, a PCB (printed circuit board), a radiator and a support, the lens is used for collimating and imaging light in the module, so that a car lamp further illuminates, the light irradiates farther and brighter, the decorative ring is used for a retainer of a module assembly, and the cut-off line baffle is used for retaining the light in the module assembly. The small iron is used for preventing sunlight from focusing and burning parts in the module, the cut-off line baffle is used for improving the focal length of the passing light, the gradient and chromaticity of the passing light are guaranteed, and the passing light and the passing light are lightened and connected at the same time. The condenser is used for guiding the passing light and the passing light, the PCB is used for controlling starting and stopping of light, and the radiator is used for dissipating heat of the module. The support is used for fixedly installing the decoration ring and the radiator.
Owner:VARROC TYC AUTO LAMPS CO LTD

Fireproof acoustic board not prone to falling off

The utility model discloses a fireproof acoustic board not easy to fall off, and relates to the technical field of acoustic boards, the fireproof acoustic board comprises a frame body, the interior of the frame body is of a hollow structure, cover plates are arranged on the two sides of the frame body, and a polyester fiber board, a foam board, a silencing board and a waterproof impermeable board are sequentially arranged in the frame body; a decorative layer is arranged on one side of the frame body, and the frame body is connected with the cover plate through bolts. The fireproof acoustic board is reasonable and reliable in structure, installation of various laminates is achieved through the frame body, it can be guaranteed that after the acoustic board is used for a long time, the laminates cannot fall off due to failure of the bonding strength, durability of the acoustic board is guaranteed, and meanwhile the fireproof acoustic board is not prone to falling off. The fireproof performance of the acoustic board can be improved through the arrangement of the fireproof coating, when a fire occurs, the coating can effectively prevent flame from spreading, the acoustic board is safer and more reliable when the fire occurs, and therefore the building structure and personnel safety are protected.
Owner:HEBEI HUIYOU NEW MATERIAL TECHNOLOGY CO LTD

Large-target-surface wide-angle TOF lens

PendingCN119596528AImprove transmittanceImprove lighting efficiencyOptical elementsOphthalmologyLight beam
The invention discloses a large-target-surface wide-angle TOF lens, and relates to the technical field of optical lenses, and the large-target-surface wide-angle TOF lens comprises a first lens group, a symmetric lens group and a second lens group. The first lens group comprises a plurality of meniscus lenses with negative focal power and convex object side surfaces, and the meniscus lenses are used for reducing incident light angles relative to the lenses; the symmetrical lens group comprises two meniscus lenses which are symmetrically arranged and have positive focal power, the object side surface of the meniscus lens close to the object plane in the symmetrical lens group is a concave surface, the image side surface of the meniscus lens close to the image plane in the symmetrical lens group is a convex surface, and the object side surface of the meniscus lens close to the image plane in the symmetrical lens group is a convex surface, and the image side surface of the meniscus lens close to the image plane in the symmetrical lens group is a concave surface; and the second lens group comprises a plurality of meniscus lenses with positive focal power and a biconvex lens with positive focal power, and is used for correcting aberration of emergent light beams of the symmetrical lens group. The lenses in the invention all adopt spherical lenses, so that high-quality imaging with large target surface and large visual angle can be realized, an aspherical mirror is not needed, and the lens cost is further greatly reduced.
Owner:HANGZHOU LUOWEI TECH CO LTD

A filter coated with ultra-low anti-reflection film and its process

ActiveCN118759626BImprove wear resistanceImprove performance qualityImaging qualityPhysical chemistry
The invention relates to the field of optical elements, and in particular to an optical filter coated with an ultra-low anti-reflection film and a process thereof, which are used to solve the problem that the anti-reflection film on the existing optical filter coated with the ultra-low anti-reflection film has an unsatisfactory anti-reflection effect and is prone to dust accumulation, thereby causing an adverse effect on the light transmittance of the optical filter; in the process, silica sol, aluminum sol, and carboxylated carbon nanotubes are used as main raw materials, so that the three are reasonably compounded, and modified with a uniform dispersant, and finally an ultra-low anti-reflection impregnation liquid is used to form an ultra-low anti-reflection film on the surface of the optical filter; through the optical filter coated with the ultra-low anti-reflection film and the process thereof of the invention, the ultra-low reflection effect of the filter surface can be achieved, and the light transmittance and imaging quality of the filter are effectively improved. At the same time, the process of the invention is simple, the cost is low, and it has a wide application prospect.
Owner:XINGLANG OPTICAL TECH (JIANGSU) CO LTD

Sandy soil camouflage toggle clip camouflage net structure

The utility model relates to the technical field of camouflage nets, and discloses a sandy soil camouflage toggle clip camouflage net structure which comprises a bottom net, a color strip layer is arranged at the top of the bottom net, a plurality of groups of camouflage strips are arranged on the color strip layer, a plurality of groups of toggle clips are arranged at the top of the bottom net, and the toggle clips are used for limiting and fixing the camouflage strips. According to the sandy soil camouflage toggle clip camouflage net structure, the camouflage strips on the colored strip layer can be fixed through the toggle clip piece, stable supporting and fixing points are provided for the camouflage strips, the toggle clip can tightly grasp the camouflage strips under various complex environment conditions no matter whether the camouflage strips are lightly fished by breeze or attacked by strong wind, the camouflage strips are effectively prevented from flying around, and the camouflage net structure is simple in structure and convenient to use. In this way, the camouflage net always keeps complete and stable appearance in the long-time use process, and the reliability and durability of the camouflage effect are greatly improved.
Owner:WUXI HONGLINPENG NET CO LTD

Optical film including coating and backlight unit including optical film

One embodiment of the present invention relates to an optical film for being disposed in a display device, and a backlight unit comprising the optical film, the optical film comprising a base film, a pattern layer disposed on the base film and comprising a curved portion, and a coating layer disposed on the pattern layer, the coating may include a plurality of particles disposed continuously on at least a portion of the curved portion of the pattern layer, and a filler material disposed along the curved portion of the pattern layer and filling spaces between the plurality of particles.
Owner:LMS

Multifunctional high-speed blower with multiple noise reduction structures

The utility model discloses a multifunctional high-speed blower with multiple noise reduction structures, which comprises a blower main body, an electric heating wire is arranged in the blower main body, one end of the electric heating wire is provided with fans at equal intervals, the bottom end of the blower main body is fixedly provided with a blower handle, and the blower handle is connected with the blower main body. A control key is installed on the outer wall of one side of the hair dryer handle, an electric wire is installed at the bottom end of the hair dryer handle, and a plug is installed at one end of the electric wire; the noise reduction structure is arranged on the inner wall of the hair drier main body, and the noise reduction structure comprises a sound insulation cover, a first cavity, wave crest sound absorption sponge, a second cavity and sound absorption cotton. The noise-reducing plug is good in noise-reducing effect, low in noise, capable of protecting hair and enabling the hair to have fragrance, waterproof and moistureproof, and capable of preventing the plug from being affected with damp.
Owner:STAR ATMOSPHERE TECH (SHENZHEN) CO LTD

A method and system for multiple planning and force adjustment of grinding allowance in robotics

This invention relates to a method and system for multiple planning and force adjustment of welding allowance in robotic machining. The invention includes real-time monitoring of weld allowance changes to obtain real-time actual weld allowance data; establishing a material removal rate model based on historical grinding data and material properties; wherein the historical grinding data includes the material removal amount of materials with different properties under different grinding parameters; the material removal rate model is used to predict the material removal amount based on the actual grinding force and material properties; the grinding parameters include grinding speed, grinding path, magnitude and direction of grinding force and / or the tilt angle of the grinding tool; when there is a deviation between the actual weld allowance data and the target allowance, the grinding parameters are dynamically adjusted based on the material removal rate model; future grinding needs are predicted based on the current grinding state, and the grinding parameters are adjusted in advance. This invention improves the consistency of welding allowance processing and grinding accuracy, and enhances grinding quality and efficiency.
Owner:JIANGSU XCMG CONSTRUCTION MACHINERY RESEARCH INSTITUTE LTD +1

Optical lens group and vehicle lamp using same

The utility model discloses an optical lens group and a vehicle lamp using the same. The optical lens group comprises a first lens, a second lens and a third lens which are sequentially arranged from an object side to an image side along an optical axis direction, the first lens is a glass lens, and the second lens and the third lens are plastic lenses. The image side surface of the first lens, the object side surface and the image side surface of the second lens and the object side surface and the image side surface of the third lens are all of aspheric surface structures; the object side surface of the first lens is a plane and the image side surface is a convex surface; the object side surface of the second lens is a concave surface and the image side surface is a convex surface; the third lens element has a concave object-side surface and a convex image-side surface. The optical lens group provided by the utility model is beneficial to miniaturization and light weight of a lamp, the production cost is reduced, better image definition and details can be obtained, and the imaging quality is high.
Owner:CHANGZHOU XINGYU AUTOMOTIVE LIGHTING SYST CO LTD

Circuit board and solid state drive

ActiveCN224460113UReduce the number of layersreduce in quantityDifferential lineSignal quality
This utility model relates to the field of circuit board packaging technology, and in particular to a circuit board and a solid-state drive. The circuit board provided by this utility model sets high-speed differential line pairs as inner layer traces, and uses vias / through holes through the pads of the high-speed differential lines to electrically connect the high-speed connector and the controller. Since the vias / through holes only need to pass through the pads, the number of wiring layers through which the vias / through holes pass is greatly reduced, which makes it possible to use back drilling process to better reduce the number of residual posts and shorten the length of residual posts, effectively reduce signal reflection or crosstalk, and improve signal quality.
Owner:DAPUSTOR CORP

Display device

PendingCN119677351AImprove lighting efficiencyreduce reflectionIdentification meansDisplay deviceMaterials science
A display device according to an embodiment of the present invention includes a display panel divided into a light-emitting region emitting light and a non-light-emitting region adjacent to the light-emitting region, and a cover layer disposed on the display panel, the cover layer including a first portion overlapping the non-light-emitting region and including a first dye, and a second portion overlapping the non-light-emitting region and including a second dye, and a light-emitting layer that overlaps the light-emitting region and includes a first substance in which at least a portion of the first dye is degraded.
Owner:SAMSUNG DISPLAY CO LTD

A method for encapsulating a perovskite device

The present application relates to the technical field of perovskite devices, and particularly relates to a packaging method of a perovskite device. The packaging method provided by the present application comprises the following steps: mixing methyl methacrylate, 2-methyl-2-acrylic acid-2-hydroxyethyl ester phosphate and 2-hydroxy-2-methyl-1-phenylpropanone to obtain a packaging slurry; coating the packaging slurry on the surface of the perovskite device, covering a glass plate, and performing light curing. The packaging method can improve the photoelectric current density of the device, thereby improving the efficiency of the device, and can significantly improve the outdoor stability of the device.
Owner:NANKAI UNIV

Flexible multifunctional electromagnetic shielding film and preparation method and application thereof

The application discloses a flexible multifunctional electromagnetic shielding film and a preparation method and application thereof. The electromagnetic shielding film comprises a carbon nanotube film, a high magnetic permeability layer and a high electrical conductivity layer combined with a first surface and a second surface of the carbon nanotube film respectively, and the electrical conductivity of the high magnetic permeability layer, the carbon nanotube film and the high electrical conductivity layer increases in turn, and the magnetic permeability decreases in turn. The application provides an electromagnetic shielding material with a three-layer structure. Due to the difference in the electrical conductivity and the magnetic permeability of the materials between the three layers, the electromagnetic wave experiences an 'absorption-reflection-reabsorption' process after entering the material, so that the material presents a low reflection characteristic. The Joule heating performance of the electromagnetic shielding film is good, the temperature response speed is fast when a voltage is applied, the stability of the electromagnetic shielding film during heating is excellent, the electromagnetic shielding film can remain stable for a long time, and the electromagnetic shielding film shows great application potential in the electromagnetic protection field and the thermal management field of high-integration electronic equipment.
Owner:SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI

Electromagnetic wave wideband frequency shift preserving transmission method based on double constitutive parameter time-varying circuit

ActiveCN122026818BNo reflectionReflective, reflective and efficientMulti-frequency-changing modulation transferenceSoftware engineeringRadio frequency
This invention discloses a broadband frequency-shifting conformal transmission method for electromagnetic waves based on a time-varying circuit with dual constitutive parameters, belonging to the fields of microwave radio frequency, time metamaterials, and frequency domain transformation technology. The method is implemented using a frequency-shifting transmission circuit, which includes a microstrip transmission line and a periodically loaded inductor branch. The inductor branch includes switches, series inductors, and parallel inductors. When all switches in the frequency-shifting transmission circuit are open, an input pulse signal is sent to the circuit. When the pulse signal has fully entered the microstrip transmission line, all switches close simultaneously. Due to the wavenumber conservation of the microstrip transmission line, frequency shift occurs, achieving frequency-shifting transmission. This method does not rely on a complex local oscillator system, does not increase circuit complexity excessively, and theoretically does not generate harmonics. It achieves broadband frequency shifting, reflection-free, high-efficiency transmission, and waveform distortion-free conformal transmission, providing a new technical path for broadband, low-distortion signal processing in the microwave radio frequency field.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA