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2996 results about "Transmittance" patented technology

Transmittance of the surface of a material is its effectiveness in transmitting radiant energy. It is the fraction of incident electromagnetic power that is transmitted through a sample, in contrast to the transmission coefficient, which is the ratio of the transmitted to incident electric field.

Antistatic PET (Polyethylene Terephthalate) base film for preparing polaroid release film and preparation method of antistatic PET base film

The invention relates to an antistatic PET (Polyethylene Terephthalate) base film for preparing a polaroid release film and a preparation method thereof, the release film base film is prepared by taking an optical-grade PET slice as a main body, adding modified PET with a specific structure and a modified SiO2 filler, and carrying out co-extrusion casting, a unique three-section stretching process and coating with a coating liquid. According to the invention, material modification and process improvement are carried out, specifically, an optical-grade PET slice is taken as a main body material, modified PET and a modified SiO2 filler with a specific structure are added, a film is prepared through co-extrusion casting and a unique three-section stretching process, and then the surface of the film is coated with a layer of antistatic coating liquid, so that the antistatic film is obtained. The finally prepared base film has low alignment angle, low transverse hot shrinkage rate and high surface adhesion, keeps the characteristics of high light transmittance and low haze of an optical-grade polyester film, endows the film with certain antistatic property, and is particularly suitable for being used as a release film of a high-end polaroid.
Owner:扬州博恒新能源材料科技有限公司

Optical film, polarizer and display device

The embodiment of the invention discloses an optical film, a polaroid and a display device. The optical film comprises a first base layer; the second base layer is positioned on at least one side of the first base layer; the first base layer has a first solid phase; the second base layer contains at least two second solid phases; in the at least two second solid phases, two adjacent second solid phases are connected to form a plurality of interfaces, the plurality of interfaces are distributed in the second base layer, and the two second solid phases forming the interfaces are made of different materials. The multiple interfaces are distributed on the second base layer, so that directional reflection of light on the second base layer is reduced, and the anti-dazzling effect is achieved. Besides, the optical film can also provide good light transmittance and higher mechanical strength, so that the integration of an anti-dazzle function is realized on the protective base material of the polaroid, and the thickness and the manufacturing cost of the polaroid are effectively controlled.
Owner:TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO LTD

Multi-probe online real-time film thickness measuring method and device

The invention discloses a multi-probe on-line real-time film thickness measuring method and a multi-probe on-line real-time film thickness measuring device. In combination with the multi-wavelength analysis capability and multi-channel parallel signal characteristics of the spectrum detection unit, different plane positions are adopted to correspond to different wavelengths or central wavelengths, the transmissivity of each wavelength is obtained, and the thickness of the corresponding position is obtained respectively; the precision and the accuracy of obtaining the thickness by a single wavelength are improved through a multi-mode cooperative signal analysis algorithm, so that the thicknesses of a plurality of different positions of the same thin film are accurately obtained at the same time through one spectrum detection unit, or the thicknesses of a plurality of different thin films are obtained; according to the invention, the problems of large absorption, transparent or non-transparent substrate compatibility, quick response, multi-branch and on-line real-time measurement of the film are successfully solved; the device and the method can be integrated in film growth equipment to carry out rapid and high-precision measurement on the film, so that closed-loop control on film production is realized, the iteration speed is increased, the yield of high-quality film production is greatly increased, and the film production cost is saved.
Owner:BEIJING HAND TECHNOLOGY CO LTD

Method for realizing acoustic vortex tunneling transmission on metasurface based on topology

The invention provides an acoustic vortex tunneling transmission method based on topology pairing metasurfaces, and the method comprises the steps: respectively arranging an absorption type metasurface and an emission type metasurface which have opposite topological charges at an inlet and an outlet of a tunneling channel, forming a pair of topology pair TPMs structures, and forming a vortex tunneling system together with a sub-wavelength channel; mode conversion between vortex waves and plane waves is achieved through multi-period fan-shaped grooves etched in the angular direction and the radial direction, and the transmission efficiency is enhanced through Fabry-Perot resonance in a sub-wavelength channel. When the length of the tunneling channel meets specific conditions, periodical adjustment of transmissivity and perfect tunneling can be achieved, and the tunneling structure has high OAM mode coupling and transmission efficiency while guaranteeing the compact structure and low material cost. The metasurface designed by the invention supports diversified acoustic vortex tunneling transmission along a straight line and a curve, and shows excellent flexibility and stability.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Metasurface array antenna housing

The invention discloses a metasurface array antenna housing, belongs to the technical field of electromagnetic wave regulation and control, and solves the problem of how to improve the transmittance and absorptivity of a metasurface to electromagnetic waves. Electromagnetic waves with different frequencies resonate on the first metasurface wave-absorbing layer and the second metasurface wave-absorbing layer respectively, so that the electromagnetic waves are absorbed by the lumped resistor. And the metasurface wave-transmitting layer re-radiates electromagnetic waves of a communication frequency band to enable the electromagnetic waves to penetrate through the metasurface unit, and meanwhile, the surface of the metasurface wave-transmitting layer can serve as a metal floor of the first metasurface wave-absorbing layer and the second metasurface wave-absorbing layer due to copper coating. The antenna can be widely used in the scenes of radar stealth, communication antenna integration, electromagnetic compatibility, wireless energy transmission and the like, and has a good application prospect.
Owner:ANHUI UNIV

Double-sided wave-absorbing broadband stealth composite material and preparation method thereof

The invention belongs to the technical field of radar wave-absorbing materials, and discloses a double-sided wave-absorbing broadband stealth composite material and a preparation method thereof. The broadband stealth composite material with the double-sided wave absorbing function comprises a non-metal-based composite material body and at least five metamaterial layers arranged in the thickness direction of the non-metal-based composite material body at intervals. The number of the metamaterial layers is an odd number, a middle metamaterial layer is arranged in the middle of the metamaterial layers in the thickness direction, and the rest metamaterial layers are symmetrically distributed on the two sides of the middle metamaterial layer; the metamaterial layer comprises conductive pattern units which are periodically arranged; the relative dielectric constant of the nonmetal-based composite material body is not greater than 10; the double-sided wave-absorbing broadband stealth composite material does not contain a metal reflecting layer. When electromagnetic waves with the frequency of 1-18 GHz vertically enter the material, the transmissivity of the material is small (smaller than-13 dB, namely smaller than 5%), and meanwhile the material has low reflectivity in a broadband. And the preparation method is simple to operate and easy to realize large-scale production.
Owner:CHANGSHA JINGYOU NEW MATERIAL TECH CO LTD

Control method and system of double-station transceiving integrated coupling equipment

The invention provides a control method and system of double-station transceiving integrated coupling equipment, and the method comprises the steps: obtaining defect coordinates and pinhole characteristic data of a target region, carrying out the analysis to obtain a transmittance abnormal region, generating an initial path of a spiral search algorithm according to the transmittance abnormal region, adjusting the search step size and angle, and obtaining a preliminary scanning boundary of a to-be-scanned region; analyzing the closeness degree of the scanning path and the defect, if the closeness degree is within a preset range, determining a power reduction condition according to the defect coordinate, adjusting the power, processing the light spot to obtain the size, and calculating a broadening coefficient; and extracting dynamic change data of the light spot size from the distributed power distribution, scanning the defect area to obtain a heat accumulation risk real-time distribution diagram, and dynamically adjusting the light spot size and power until the peak coupling power stability recovers to a preset range.
Owner:SHENZHEN XINGQIHANG AUTOMATION EQUIP CO LTD

Electrochromic window multi-scene control method, system and equipment based on indoor human body thermal comfort and medium

The invention relates to an electrochromic window multi-scene control method, system and device based on indoor human body thermal comfort and a medium. The method comprises the steps that a perception data set is constructed; based on the sensing data set, performing multi-parameter coupling calculation of solar incidence azimuth deviation constraint and dynamic projection overlapping to obtain a direct radiation component, performing window space coupling analysis and double space compensation calculation to obtain a scattered radiation component, and performing fusion to obtain an individual thermal radiation influence value; determining a scene category based on the perception data set, and establishing a thermal radiation evaluation benchmark by adopting a mode matched with the scene category; and if the thermal radiation evaluation benchmark exceeds a preset threshold value, the required transmissivity of the window faces is obtained through a full-transmissivity radiation distribution method, the corresponding window faces are adjusted to the target transmission gradient according to the required transmissivity, and coupling control over the wind direction and / or power of the air conditioning system is selectively triggered. According to the invention, by constructing a multi-dimensional dynamic sensing system and an intelligent control framework, collaborative optimization of human body thermal comfort and building energy efficiency is realized.
Owner:HUNAN UNIV

All-dielectric film system structure with visible near-infrared low transmission vegetation simulation, intermediate infrared high reflection and microwave high transmission

The invention provides an all-dielectric film system structure with visible near-infrared low transmission vegetation simulation, intermediate infrared high reflection and microwave high transmission. The device sequentially comprises, from top to bottom, a visible near-infrared simulated vegetation layer which is composed of first to fourth dielectric layers and is configured to simulate vegetation reflection spectrum characteristics in a wave band of 380-2500 nm and has a low transmission characteristic; the intermediate infrared high-reflection layer is formed by alternately stacking a first dielectric layer and a third dielectric layer, and is configured to form high reflection in a wave band of 3-14 microns; and a substrate layer; the thickness of the whole film layer is far smaller than the microwave wavelength, so that the film system keeps high transmission in the microwave band. According to the invention, the amorphous InSb material with high loss characteristic in visible near-infrared light is introduced, so that the average transmissivity of 1500-2500 nm is reduced to 0.095 while high-precision simulation of the vegetation reflectivity spectrum is realized, thereby realizing simulation of low transmissivity of the wave band vegetation.
Owner:ZHEJIANG UNIV

High-reflectivity coated glass and preparation method thereof

The invention provides high-reflectivity coated glass and a preparation method thereof. The high-reflectivity coated glass comprises a glass substrate, and an antioxidant dielectric layer, a reinforced dielectric layer, a metal layer and an outer dielectric layer which are sequentially arranged on the glass substrate, and the reinforced dielectric layer comprises a first dielectric layer and a second dielectric layer which are arranged in sequence. According to the coated glass provided by the invention, through specific dielectric layer structure combination, the reflectivity of the coated glass is improved, the transmittance is reduced, and the coated glass has good oxidation resistance, scratch resistance and heat-resistant processability, is simple in preparation process and has a wide application prospect.
Owner:TIANJIN CSG ENERGY CONSERVATION GLASS CO LTD +1

Background spectrum accurate acquisition method for infrared remote measurement in complex scene

The invention discloses a background spectrum accurate acquisition method for infrared remote measurement in a complex scene, and the method comprises the steps: carrying out the division of sky and ground object backgrounds for an input background image, and selecting different radiation spectrum generation modes based on a division result; if yes, sky radiation spectrum extraction is carried out based on an MODTRAN radiation transfer model; if the background is judged to be a single ground object background, performing background spectrum extraction by adopting ELM-EMD (Extreme Learning Mode-Empirical Mode Decomposition) which is extracted in real time based on a measurement spectrum and changes slowly at low frequency; and if the background is not single, fusion of the two spectrum extraction modes is adopted. The method has the advantages that the background classification method with the visible image as the reference is adopted, the difference of infrared radiation characteristics of the sky background and the ground feature background is analyzed, different spectrum extraction modes are selected according to the difference, and therefore accurate obtaining of the target smoke plume transmittance spectrum is achieved.
Owner:HEFEI INSTITUTE OF PHYSICAL SCIENCE CHINESE ACADEMY OF SCIENCES

Unequal-thickness ultra-thin glass as well as method and application thereof

PendingCN120647144ATransmittanceThin glass
The invention provides unequal-thickness ultra-thin glass and a preparation method and application thereof.The unequal-thickness ultra-thin glass adopts a specific formula calculated according to the percentage of oxides, the ratio of (Al2O3 + Na2O + K2O + MgO) / (B2O3 + SiO2) is controlled to range from 52% to 68% on the basis that ZnO, P2O5 and SrO are not added by controlling the components adopted in the formula and the matching relation among the components, and the unequal-thickness ultra-thin glass is obtained. The maximum thickness of the unequal-thickness ultra-thin glass is controlled, so that the light transmittance of the unequal-thickness ultra-thin glass can reach 91%, the fracture toughness of the unequal-thickness ultra-thin glass can be larger than or equal to 0.76 MPa.m < 1 / 2 >, the Vickers hardness of the unequal-thickness ultra-thin glass can reach 573 kgf / mm < 2 > or above, the average single drop pen impact height of a non-bending area of the unequal-thickness ultra-thin glass can reach 100 mm or above, and the unequal-thickness ultra-thin glass has good bending performance, impact resistance and drop resistance.
Owner:CHONGQING AUREAVIA HI TECH GLASS CO LTD

Explosive impact isolation method using cellular porous materials

The present application relates to the technical field of pyrotechnic impact equipment, and more particularly to a pyrotechnic impact isolation method using honeycomb porous materials. The present application uses the complexity of the transmission path of honeycomb porous materials to construct the satellite-rocket interface, increase the stress wave impedance of the satellite-rocket interface, reduce the stress wave transmissivity, and achieve the isolation of the pyrotechnic impact response. The present application uses the explicit finite element method to model and analyze the transient dynamics of the relevant structure, and studies the pyrotechnic impact isolation characteristics of honeycomb porous materials. The present application can effectively reflect the stress wave, dissipate the impact energy, achieve the effective isolation and suppression of the pyrotechnic impact, and improve the method of traditional satellite-rocket connection.
Owner:YANTAI UNIV

PVB (polyvinyl butyral) composite film as well as preparation method and application thereof

The invention relates to a PVB (polyvinyl butyral) composite film as well as a preparation method and application thereof. The PVB composite film is prepared from the following raw materials in parts by weight: 100 parts of PVB resin, 1-10 parts of nano praseodymium oxide, 1-10 parts of a dispersing agent, 0.01-1 part of a coupling agent and 20-50 parts of a plasticizer. The nano praseodymium oxide is added into the PVB resin, and the infrared absorption band of the PVB composite film is optimized by utilizing the infrared absorption performance, chemical stability and heat-resistant stability of the nano praseodymium oxide, so that infrared radiation can be efficiently blocked, and the excellent heat insulation effect and long-term use stability of the PVB composite film are realized. Furthermore, the nano praseodymium oxide is modified by a coupling agent, so that the dispersion uniformity of the nano praseodymium oxide in the PVB resin and the interface bonding force of the nano praseodymium oxide and the PVB resin are improved, the light transmittance loss of the PVB composite film is reduced, and the mechanical property and the heat insulation property of the composite film are improved.
Owner:ANHUI YINIAN SEMICON CO LTD

Silica gel integrated optical film with 3D light splitting function and manufacturing method thereof

The invention relates to the field of optical display and material engineering, in particular to a silica gel integrated optical film with a 3D light splitting function and a manufacturing method of the silica gel integrated optical film. A silica gel integrated optical film with a 3D light splitting function comprises a transparent optical base material and a microstructure layer, and the microstructure layer is combined on the surface of the transparent optical base material in an integrated forming mode. And the microstructure layer is an anhydrous silica gel-resin composite material obtained by combining organic silica gel with low refractive index and resin with high refractive index through an anhydrous chemical reaction system. The optical film obtained in the invention has excellent interface bonding stability and long-term reliability, the overall thickness of the optical film is small, the optical loss is reduced, the light transmittance is higher, and the overall transmittance can reach 93% or above. And the manufacturing process integration degree and the mold repeated utilization rate are high, the industrial batch production requirement can be met, and the excellent industrial application prospect is achieved.
Owner:深圳市谱维智能科技有限公司

Devices with displays having transparent openings and shorted pixels

An electronic device may include a display and an optical sensor formed underneath the display. The display may have both a full pixel density region and a high-transmittance region that overlaps the optical sensor. To increase the transmittance of light through the high-transmittance region of the display, emissive sub-pixels in the high-transmittance region may be shorted together. Each emissive sub-pixel may be shorted to an emissive sub-pixel of the same color. The emissive sub-pixels in the high-transmittance region of the display may have the same layout but smaller sizes relative to the full pixel density region of the display. The thin-film transistor sub-pixels in the high-transmittance region may be consolidated horizontally and / or vertically to produce larger continuous high-transmittance areas.
Owner:APPLE INC

Inversion method and system of semiconductor epitaxial growth parameters, detection device and related products

The invention provides a semiconductor epitaxial growth parameter inversion method, a semiconductor epitaxial growth parameter inversion system, a semiconductor epitaxial growth parameter detection device and a related product, and relates to the technical field of semiconductor detection. The gas phase transmittance of a detection light path is further obtained, quantitative compensation is carried out on the actually measured reflection spectrum in the semiconductor epitaxial growth process, the compensated target reflection spectrum is closer to the real optical response of a semiconductor epitaxial film, and therefore spectral shape distortion and system errors caused by gas phase absorption superposition are effectively weakened. And the accuracy and the stability of the inverted growth parameters are obviously improved. Furthermore, the quantitative compensation value can be adaptively updated according to the fluctuation of the working condition, the inversion deviation introduced by the drift of the working condition is reduced, the consistency and comparability of the process are improved, and more reliable end point control and parameter closed-loop optimization can be conveniently realized.
Owner:SHANGHAI CHEYITIAN TECH CO LTD

Inversion method for detecting cloud particle physical characteristics by satellite-borne multi-wavelength laser radar

The invention discloses a spaceborne multi-wavelength laser radar detection cloud particle physical property inversion method. The method comprises the following steps: solving the altitude height and the surface height of each point of an echo signal; de-noising the echo signal; correcting the pre-processed signal to obtain an attenuated backscattering signal and identifying a cloud boundary; establishing a molecular transmittance lookup table, and calculating transmittance and atmospheric molecular parameters; the back scattering coefficient of the cloud is obtained through inversion according to the attenuation back scattering signal, the transmittance lookup table, the aerosol and cloud particle transmittance and the atmospheric molecule parameters; the optical thickness, the extinction coefficient and the like of the cloud are calculated by using the attenuation backscattering signal, the cloud particle and atmospheric molecule transmittance and the atmospheric molecule parameters; calculating the depolarization ratio of the cloud; calculating an integral backscattering coefficient and an integral depolarization ratio of the cloud by using the cloud boundary information; and identifying a cloud particle phase state. The method is characterized in that cloud boundary identification is carried out on spaceborne laser radar echo signals, and cloud optical parameters are solved accurately and efficiently.
Owner:SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI

Dual-band medium-long wave infrared optical filter based on germanium / zinc sulfide asymmetric film system and preparation method of dual-band medium-long wave infrared optical filter

The invention relates to a dual-waveband medium-long wave infrared optical filter based on a germanium / zinc sulfide asymmetric film system and a preparation method of the dual-waveband medium-long wave infrared optical filter. The dual-waveband medium-long wave infrared optical filter comprises a front film system, a substrate and a back film system, the front film system and the back film system are formed by alternately overlapping germanium layers and zinc sulfide film layers; the average transmittance of the infrared optical filter in the wave band of 3800 nm to 4800 nm and the wave band of 8000 nm to 10000 nm is not lower than 91%. According to the two-waveband medium-long wave infrared optical filter disclosed by the invention, 3800 to 4800 nm amp is realized; according to the infrared filtering window, the light energy of medium waves and long waves of 8000-10000 nm is improved, the luminous flux of other wavebands is well inhibited, the technical problem of the infrared filtering window in some special infrared spectrum detection systems is solved, and a new scheme is provided for infrared application.
Owner:SHANGHAI MIFENG LASER TECH CO LTD

High-light-transmittance low-haze upper diffusion film and preparation method thereof

The invention relates to the technical field of optical thin films, in particular to a high-transmittance low-haze upper diffusion film and a preparation method thereof. A high-light-transmittance low-haze upper diffusion film comprises a transparent base film and a nano coating coated on the surface of the transparent base film, and the nano coating comprises the following preparation raw materials: 30-40 parts of polyurethane modified acrylate, 20-30 parts of a high refractive index monomer, 10-15 parts of a functional monomer, 1.5-2 parts of nanoparticles and 2-4 parts of a photoinitiator. Wherein the nano particles are modified AlO / SiO nano composite particles. Through nano particle modification, functional monomer compounding and resin matrix optimization, the contradiction between light transmittance and mechanical performance of a traditional light diffusion film is broken through, comprehensive upgrading of optical performance (light transmittance / haze), mechanical strength (hardness / flexibility) and weather resistance (high temperature / aging resistance) is achieved, and the light diffusion film is suitable for high-end scenes such as ultra-thin OLED screens and vehicle-mounted display.
Owner:惠州市长松科技有限公司

Image rotation detection and image rotation elimination adjustment method applied to laser communication optical system

The invention discloses an image rotation detection and image rotation elimination adjustment method applied to a laser communication optical system, belongs to the technical field of space laser communication, and solves the problem that the space layout compactness, link energy transmittance and the like of the laser communication system are influenced by adopting a traditional rotation elimination device such as a Dove prism and a K mirror. The positions and angles of the left side collimator and the right side collimator are respectively adjusted to realize coaxial and detection reference transmission; placing the detected laser communication system between the two collimators, and adjusting a rotary table pitch angle of the laser communication system to enable a telescope of the laser communication system to be respectively aligned with the two collimators; extracting and recording light spot centroid coordinates of laser emitted by the two light tubes focused on the area-array camera of the laser communication system; calculating to obtain an image rotation angle; and adjusting the angle of a plane mirror in the laser communication system and carrying out iterative detection until the image rotation angle is reduced to meet the design requirement, thereby completing the adjustment work of the image rotation of the pitch axis of the detected laser communication system.
Owner:CHANGGUANG SATELLITE TECH CO LTD

Ceramic 3D printing A sandwich structure with broadband wave transmission characteristic

The invention relates to the technical field of aerospace, in particular to a ceramic 3D printing A sandwich structure with a broadband wave-transparent characteristic. According to the ceramic 3D printing A sandwich structure with the broadband wave transmission characteristic, good compatibility of broadband wave transmission, strength-structure accuracy and reliability is achieved, an obvious effect on broadband wave transmission of 1 GHz to 18 GHz is achieved, the dielectric constant and the tangent loss are in a reduction trend under the same frequency band, excellent stability is shown, and the dielectric constant and the tangent loss are reduced under 10 GHz. The dielectric constant of the ceramic 3D printing A sandwich structure with the broadband wave transmission characteristic is reduced by 40% or above compared with that of a full solid structure, the wave transmission rate is increased by 50% or above, the ceramic 3D printing A sandwich structure has excellent electromagnetic performance and mechanical performance, and support is provided for implementation of reliable service application targets such as diversion, heat protection, wave transmission, bearing and rain erosion resistance of hypersonic aircrafts.
Owner:JIMEI UNIV +1

Optical super lens with high focusing efficiency and preparation method thereof

ActiveCN120630353ALensDielectricTransmittance
The invention relates to an optical super lens with high focusing efficiency and a preparation method thereof. The optical super lens comprises a pair of optical substrates, antireflection films arranged on the surfaces of one sides of the optical substrates, moth-eye films arranged on the surfaces of the other sides of the optical substrates in a protruding mode, and a plurality of nano dielectric cylinders arranged between the pair of moth-eye films and made of high-refractive-index materials. At least one structural parameter of the plurality of nano dielectric cylinders in the length direction of the optical substrate is modulated to meet phase distribution of 2 pi, and at least one structural parameter of the moth eye mask in the thickness direction of the optical substrate is modulated to complete refractive index transition from the plurality of nano dielectric cylinders to the optical substrate. According to the invention, the problem of transmittance reduction caused by refractive index mismatch in a traditional optical super lens is solved, and the focusing efficiency of the optical super lens is effectively improved on the basis of not influencing the original phase distribution.
Owner:MOLDNANO (HANGZHOU) TECHNOLOGY CO LTD

Preparation method of visible and near-infrared dual-band high-transmittance transparent conductive film

The invention relates to a preparation method of a visible and near-infrared dual-band high-transmittance transparent conductive film, which is characterized by comprising the following steps of: (1) preparing an ITO (Indium Tin Oxide) film on a transparent substrate by adopting a magnetron sputtering process, and sputtering and depositing the ITO film with the thickness of 200-1000nm; and (2) placing the substrate on which the ITO film is deposited in a high-temperature furnace for rapid heating heat treatment, and cooling after heat treatment. The preparation method has the advantages that the preparation method is simple, and rapid batch production can be realized in combination with an existing magnetron sputtering system; the average transmittance of the transparent conductive thin film prepared by the method reaches 70%-75.1% at the wave band of 1.1-2.5 microns, the average transmittance of the visible light wave band is not lower than 84%, and the sheet resistance is 20-35 omega / sq.
Owner:CNBM RESEARCH INSTITUTE FOR ADVANCED GLASS MATERIALS GROUP CO LTD

Optical measurement device and system

The present disclosure discloses an optical measurement device and system, the device comprising a light splitting module comprising at least one optical element plated with an optical film, the transmittance and / or reflectance of the optical film monotonically changing with wavelength within a measurement band range; the at least two image sensors are respectively arranged at the downstream of the light path of the light splitting module, at least one of the at least two image sensors is configured to receive the light beam output by the optical thin film and generate image information, and the image information is used for obtaining a two-dimensional wavelength distribution diagram of the to-be-detected sample. According to the embodiment provided by the invention, the wavelength measurement time is effectively shortened through the innovative combination of the optical film of which the transmittance and / or the reflectivity monotonically changes along with the wavelength in the measurement waveband range and the dual-path synchronous imaging architecture.
Owner:GOVION TECHNOLOGY (SUZHOU) CO LTD

Adhesive sheet and optical semiconductor device

To provide an adhesive sheet having high light extraction function and excellent reliability.SOLUTION: An adhesive sheet 1 comprises a substrate part 4, and an adhesive part 2 formed on one side of substrate part 4. The adhesive part 2 includes a first adhesive layer 21 and a second adhesive layer 22. The adhesive sheet 1 has a lamination structure in which the first adhesive layer 21, the second adhesive layer 22 and the substrate part 4 are laminated in this order. A visible light transmittance T1 of the first adhesive layer 21 and a visible light transmittance T2 of the second adhesive layer 22 satisfy T1<T2. A storage modulus G1'of the first adhesive layer 21 at 90°C is 35 to 100 kPa.SELECTED DRAWING: Figure 1
Owner:NITTO DENKO CORP

Display devices

A display device that includes a display element including a light source, and a surface film disposed so as to overlap with the display element and including a thermoplastic elastomer composition, the thermoplastic elastomer composition satisfying conditions (1) and (2) below, and the surface film satisfying conditions (3) and (4) below: (1) The melt flow rate (ASTM D1238, 230° C., 2.16 kg load; MFR) is not less than 30 g / 10 min. (2) The type A hardness (momentary value) measured by a method in accordance with JIS K6253 is 60 to 90. (3) The thickness is not less than 300 μm and not more than 2 mm. (4) The total light transmittance measured by a method in accordance with JIS K7361 is 3 to 60%.
Owner:MITSUI CHEMICALS INC

System and method for realizing positive and negative weighting in optical domain

The invention discloses a system and a method for realizing positive and negative weighting in an optical domain, and the system comprises a multi-wavelength light source array which provides multi-channel optical signals, and each wavelength corresponds to an input channel; the adjustable bias photoelectric modulator arrays are in one-to-one correspondence with the light sources, a quiescent working point is biased in a positive / negative slope linear region of a transmission curve through an independent bias circuit, positive and negative weight symbol control is realized, and an input electric signal is loaded; the multi-wavelength micro-ring weighting unit is used for weighting the modulated optical signal by regulating and controlling the transmissivity of the micro-ring; the photoelectric detection unit adopts a single-path detector to receive a composite optical signal and convert the composite optical signal into an electric signal; and the capacitor blocking and signal synthesis unit filters a direct current component, synthesizes an alternating current weighted signal and outputs a real number weighted sum. The system does not need to balance detectors and redundant devices, simplifies hardware architecture, reduces cost and size, reduces power consumption, improves weighting precision and reliability, supports flexible expansion of multi-wavelength channels, adapts to requirements of a large-scale optical neural network, and provides support for optical calculation integration and low-power-consumption landing.
Owner:TSINGHUA SHENZHEN INTERNATIONAL GRADUATE SCHOOL

Layer structure of radome body and manufacturing method

The invention belongs to the technical field of composite materials and radomes, and particularly relates to a layer structure of a radome body and a manufacturing method. The skin comprises a first skin layer, an interlayer, a second skin layer and a polyvinyl fluoride film layer which are sequentially arranged from top to bottom. Through collaborative design of a micro-nano composite structure and a low-surface-energy material, a self-cleaning surface skin layer with super-hydrophobicity, high wave transmission and weather resistance is constructed. Compared with a traditional fluorocarbon coating, the wave transmission rate is 60-70% and is improved by more than 25%, the signal transmission loss is remarkably reduced, and the harsh requirement for the wave transmission performance of the antenna housing is met. The cleaning cost of a traditional antenna housing can be saved by more than 80%, especially for high-altitude and complex-structure antenna housings, high-altitude operation or special equipment is not needed, and the maintenance safety risk is reduced. The replacement frequency of the radome caused by aging and abrasion of the coating can be reduced, and the overall life cycle cost of equipment is reduced.
Owner:SHAANXI TIANYI ANTENNA