57 results about "Infrared reflectance" patented technology

A safety helmet includes a shell configured to surround a user's head, and an infrared-reflective layer disposed inside the shell. The infrared-reflective layer is configured to reflect at least a portion of incident infrared radiation that passes through the shell. The infrared-reflective layer has an infrared reflectance of at least 40%. The safety helmet can further have an evaporative cooling pad positioned within a cavity defined by an inner surface of the shell. A method of manufacturing a safety helmet is also disclosed.

A high infrared reflectance Cu-TiO2 composite coating and its preparation method are disclosed. The method involves mechanically ball-milling Cu powder and TiO2 powder, wherein the TiO2 mass percentage is 10%–20%. The mixed powder is then deposited onto the substrate surface using cold spraying, preferably with a Ti buffer layer. This invention utilizes the dispersion strengthening, optical synergistic enhancement, and chemical barrier effect of TiO2 particles in the Cu matrix to improve the coating's hardness and wear resistance while simultaneously increasing infrared reflectance. Experiments show that when Cu:TiO2 = 85:15, the coating achieves an absolute infrared reflectance of 94.02% in the 1900–2300 nm wavelength band, higher than pure Cu coatings and existing cold-sprayed Ag and Al coatings. Furthermore, the coating is dense and oxidation-free. This invention features a simple process and low cost, making it suitable for applications such as solar collectors, infrared reflectors, and optical devices.

A heat protection kit for a welding helmet (10A) having a helmet body (12) and a welding filter (20) connected to a front portion (13) of the helmet body is disclosed. The heat protection kit includes a kit visor (22) configured to at least partly cover the welding filter. The kit visor has a high luminous transmittance and a high infrared reflectance. The heat protection kit further includes a mounting member configured to mount the kit visor to the helmet body. Upon mounting of the kit visor to the helmet body via the mounting member, the kit visor at least partly covers the welding filter. A welding helmet assembly including the heat protection kit is also disclosed.

To evaluate the functionality of closed conduit drainage water in a farm field using a simplified configuration.SOLUTION: An information processing device (1) comprises an acquisition unit (111) that acquires the red reflectance and near-infrared reflectance of a farm field, a first calculation unit (112) that calculates a value of a dryness index indicating the degree of dryness of the farm field by referring to the red reflectance and near-infrared reflectance, and a second calculation unit (113) that calculates a value of an index indicating the drainage function of the closed conduit by referring to the value of the dryness index calculated by the first calculation unit, the value of the dryness index when the farm field is in a wet state, and the value of the dryness index when the farm field is in a dry state.SELECTED DRAWING: Figure 1

The application provides a reflective heat-insulating and heat-preserving aerogel thermal insulation finish paint, which comprises the following components: modified acrylic resin, organic silicon-coated titanium white powder, organic silicon-coated heavy calcium powder, near-infrared reflective heat-insulating titanium white powder, silica aerogel paste, additives and deionized water; wherein the modified acrylic resin is obtained by reaction of benzyl acrylate emulsion, light reflection polymer, organic silicon hydrophobic additive and ultraviolet absorber; and the light reflection polymer is titanium dioxide grafted acrylic acid. The application solves the problems of the lack of heat-preserving performance, the general weather resistance and the poor stain resistance of the existing products, and truly achieves the comprehensive protection function of reflective heat insulation, heat preservation, weather resistance and stain resistance, and has a good application prospect.

The application discloses a multi-modal human body recognition system and method based on photoelectric super surface and radar fusion, and belongs to the field of optoelectronics and radar sensing technology. The system realizes optical edge enhancement through a phase programmable super surface, combines continuous wave radar and frequency modulated continuous wave laser radar to obtain micro-Doppler spectrum and three-dimensional point cloud, and simultaneously collects near-infrared reflectance spectrum. On the algorithm, a cross-modal Transformer-GAT architecture is adopted to fuse multi-source features, an adaptive kernel function is used to optimize edge extraction, and a Mach-Zehnder interferometer or a ReRAM chip is used to realize low-power edge reasoning. Experiments show that the recognition accuracy of the application in complex scenes such as multi-target occlusion and low light is significantly better than that of a single modal scheme, and the application has edge deployment capability of ≤25ms delay and ≤4W power consumption, thereby providing an efficient solution for multi-scene human body dynamic recognition and health monitoring.

The application discloses a gallium nitride material epitaxial structure for in-situ infrared spectrum test under electric field and a test method thereof, and belongs to the technical field of semiconductors. The gallium nitride material epitaxial structure comprises a substrate, a stress control layer, an n-type gallium nitride layer and a p-type gallium nitride layer, wherein the p-type gallium nitride layer is an alternatingly-doped superlattice p-type gallium nitride or a gradually-doped p-type gallium nitride; a test electrode with an inner circle-outer ring metal pattern is arranged on the surface of the gallium nitride material epitaxial structure, and the inner circle electrode and the outer ring electrode form ohmic contacts with the p-type gallium nitride layer and the n-type gallium nitride respectively. The gallium nitride material epitaxial structure breaks through the limitation of the p-type gallium nitride layer bearing voltage in the traditional epitaxial structure, overcomes the blocking effect of the traditional metal electrode on infrared light, and is designed by modifying the sample seat of an infrared reflectance spectrometer, so that the infrared reflectance spectrometer can truly have the ability of testing the infrared spectrum of the p-type gallium nitride under in-situ electric field while applying pressure to the sample, and technical support is provided for the dynamic evolution research of material defects.

A safety helmet includes an outer shell configured for surrounding a head of a user, and an infrared reflective layer disposed in an interior of the outer shell. The infrared reflective layer is configured for reflecting at a least a portion of incident infrared radiation transmitted through the outer shell. The infrared reflective layer has infrared reflectivity of at least 40%. A method of manufacturing a safety helmet with an infrared reflective layer is also disclosed. The method may further produce a safety helmet having an evaporative cooling pad positioned within a cavity defined by the inner surface of the outer shell.

The invention relates to a semiconductor wafer, a method of processing a semiconductor wafer, and a semiconductor chip. A semiconductor chip according to an embodiment includes: a substrate including a chip region and a residual scribe surrounding the chip region; and an infrared mark disposed in the chip area or in the residual scribe line. The infrared marker includes a plurality of optical patterns. The plurality of optical patterns includes integrated circuit structures having different stack structures over the substrate, and the plurality of optical patterns have different infrared reflection characteristics.

The invention relates to the technical field of pigments, and particularly discloses a near-infrared high-reflection black coating based on perovskite type metal composite oxide and a preparation method. The near-infrared high-reflection black coating comprises a coating component and a functional pigment and filler component, wherein the weight ratio of the coating component to the functional pigment and filler component is (50-90): (10-50); the coating component comprises the following components in parts by weight: 50-90 parts of coating resin, 0.1-0.5 part of a flatting agent, 0.1-2 parts of an anti-settling agent and 30-70 parts of a diluent; the functional pigment and filler component comprises perovskite type metal composite oxide. According to the application, the near-infrared reflectivity of the black perovskite-based coating can be improved, and the cost can be reduced.

The invention provides weather-resistant optical functional coating nanoparticles as well as a preparation method and application thereof, and belongs to the field of coatings. The nano particle comprises an inner core and an outer core, wherein the inner core is made of a near-infrared reflecting material; the near-infrared reflection material adopts metal oxide nanoparticles with a near-infrared reflection function; the first wrapping layer is a silicon dioxide middle layer and wraps the inner core; and the second wrapping layer is an aluminum oxide passivation layer and wraps the silicon dioxide intermediate layer. And the nano particles are used as functional filler of the weather-resistant optical functional coating. According to the core-shell structured nanoparticles provided by the invention, the specific passivation layer is introduced, so that the near-infrared reflection function of the core material is retained, and the photocatalytic damage of the core material to an organic matrix is fundamentally eliminated, thereby obtaining the coating with long-acting stability, high visible light transmittance, excellent spectral selectivity and weather resistance.

The application provides a kind of weather-resistant optical functional coating nanoparticles and its preparation method and application, belong to the field of coating.The nanoparticles include: inner core, the inner core is near-infrared reflective material;The near-infrared reflective material uses metal oxide nanoparticles with near-infrared reflective function;First wrapping layer, the first wrapping layer is silica intermediate layer, which wraps the inner core;Second wrapping layer, the second wrapping layer is alumina passivation layer, which wraps the silica intermediate layer.The nanoparticles are used as the functional filler of weather-resistant optical functional coating.The application provides a kind of core-shell structure nanoparticles, by introducing specific passivation layer, while retaining the near-infrared reflective function of inner core material, fundamentally eliminate its photo-catalytic damage to organic matrix, so as to obtain long-acting stability, high visible light transmittance, excellent spectral selectivity and weather-resistant coating.

This invention discloses a hyperspectral biomimetic thin film material simulating green vegetation leaves and its preparation method, comprising the following components: water, a hydrophilic polymer, a high near-infrared reflectance pigment, a hygroscopic material, an inorganic hydrated salt, superabsorbent fibers, and an organosilicon modifier. The biomimetic thin film material provided by this invention not only possesses spectral characteristics highly similar to green vegetation but also exhibits excellent conventional properties, including water resistance, air permeability, wide applicability, and long service life. In its preparation, this invention involves simple casting and curing to form a film, which, after drying, yields coating materials of various shapes and thicknesses.

The application relates to the technical field of optical structure, in particular to a multilayer film structure for building glass radiation refrigeration. 6 / HfO2 / glass / HfO2 / (SiO2 / X / HfO2) 6 The ternary film layer structure is characterized in that (HfO2 / X / SiO2) 66 / HfO2 is a reflective ultraviolet ternary DBR, denoted as A structure, HfO2 / (SiO2 / X / HfO2) 6 The structure is a reflective near-infrared ternary DBR, denoted as B structure. The ultraviolet reflectance of the film system structure is 52.43%, the visible light transmittance is 76.22%, the near-infrared reflectance is 58.82%, and the surface emissivity is 83.38%, so that the performance is better, the radiation refrigeration effect can be achieved, and the film system structure can be applied to building glass.

The invention relates to the technical field of color sorter image recognition, in particular to a dynamic background compensation color sorter image recognition method, which comprises the following steps of dynamic background modeling and online updating, robust foreground segmentation and target extraction, illumination invariance and multi-dimensional feature extraction, adaptive threshold classification and decision making and sorting instruction execution. Through a dynamic background model and an online updating mechanism thereof, the method can automatically adapt to the fluctuation of workshop illumination and the slow aging of a background plate, and reduces the false detection and omission ratio caused by environmental changes to the minimum. A multi-dimensional discrimination system is formed by fusing hue / saturation characteristics insensitive to illumination, texture characteristics representing a surface structure and near-infrared characteristics reflecting substance components, and for substances with similar gray values, the surface texture and near-infrared reflection characteristics have significant differences, so that the substances can be effectively recognized and eliminated.

The application belongs to the field of rare earth secondary resource recycling, and particularly relates to a rare earth near-infrared reflective ceramic material, a preparation method and application thereof. The rare earth near-infrared reflective ceramic material comprises 0-1 parts of rare earth polishing powder waste, 0-1 parts of fluorescent powder waste and 0-0.3 parts of permanent magnet waste. The application can realize effective comprehensive utilization of rare earth secondary resources, and obtain a cold pigment with high near-infrared reflectivity and bright color.

The invention relates to the technical field of coated glass, in particular to self-cleaning low-emissivity hollow coated glass and a preparation process thereof. The invention relates to a preparation process of self-cleaning low-emissivity hollow coated glass. The preparation process comprises the following steps: preparing single-layer coated glass; preparing double-layer coated glass; preparing three layers of coated glass; preparing modified sericite powder and modified talcum powder; and preparing the hollow coated glass. The preparation method comprises the following steps: firstly dissolving tin tetrachloride pentahydrate, then adding molybdenum hexacarbonyl and neodymium chloride hexahydrate, fully stirring and dissolving to prepare precursor sol, then uniformly coating the precursor sol on the surface of a yttrium-doped zinc oxide coating of single-layer coated glass, and calcining to form a neodymium-molybdenum co-doped tin dioxide coating, so that the carrier concentration and mobility can be improved; and an infrared light absorption path is destroyed, and energy loss is reduced, so that the infrared reflection effect is further enhanced, and the radiance of the hollow coated glass is reduced.

The invention discloses a visible light-infrared compatible stealth ITO film and a preparation method thereof, and relates to the technical field of ITO transparent conductive film materials. The preparation method comprises the following steps: (1) sputtering at an initial section; (2) sputtering a transition section; (3) sputtering at a termination section; and (4) carrying out segmented annealing treatment. According to the method, the hydrogen-argon mixed atmosphere is dynamically regulated and controlled, and the sectional annealing process is adopted, so that the collaborative optimization of the ITO thin film in three aspects of sheet resistance, visible light transmittance and infrared reflectivity is realized. A gradient sputtering strategy of hydrogen concentration from high to low is adopted, a segmented annealing process is combined, a gradient distribution structure of which the carrier concentration is gradually reduced from a substrate to the surface is realized in a single-layer thin film, and the structure enables the bottom of the thin film to have high carrier concentration and guarantees low sheet resistance and high infrared reflection; the surface defect concentration is low, and high visible light transmittance is guaranteed. The sheet resistance of the thin film is lower than 5 omega / sq, the average transmittance of the thin film in the visible light wave band of 400-800 nm is higher than 80%, and the average reflectivity of the thin film in the infrared atmosphere window wave band of 8-14 microns is higher than 85%.

The application discloses a kind of degenerative farmland soil organic matter three-dimensional mapping methods of fusing remote sensing, near-ground sensing and historical data, it is related to digital soil mapping technical field, the method is based on INLA-SPDE three-dimensional model framework, fusing remote sensing, near-ground sensing and historical data realizes high-precision three-dimensional mapping, steps are as follows: collecting soil profile different depth organic matter data and near-sensing visible near-infrared reflectance spectrum data in each sampling point of study area, then screening and organic matter significantly related visible near-infrared reflectance spectrum characteristic band, collect and integrate historical data, and complete standardization processing to remote sensing, near-ground sensing data;Divide modeling set and verification set, determine the triangular grid parameter based on semi-variogram and construct SPDE model;Near-sensing, remote sensing data are used as covariant and are incorporated into INLA-SPDE three-dimensional model, generate soil organic matter three-dimensional spatial distribution map after model fitting and quantify uncertainty.The application overcomes the problem that traditional method cannot accurately simulate the vertical variation of soil properties, realizes the high-precision, high-efficiency three-dimensional mapping of regional scale soil organic matter in horizontal and vertical dimensions.

The invention relates to the technical field of cable detection, in particular to a wind power cable performance detection method and system. The method comprises the following steps: acquiring reference spectrum data of an unaged wind power cable, and obtaining near infrared reflection spectrum data of a wind power cable to be detected; calculating an oxidative degradation index and a component loss index based on the near infrared reflection spectrum data; constructing a matrix permeability factor by using the component loss index, and carrying out nonlinear correction on the oxidative degradation index to obtain an effective oxidative damage degree; and finally, constructing a structural integrity factor based on the component loss index and the effective oxidative damage degree, and evaluating the comprehensive mechanical performance of the to-be-tested wind power cable. According to the method, the problem that traditional single-index detection cannot represent the physical synergistic effect of multiple degradation mechanisms is solved by constructing the collaborative failure model, and the accuracy and sensitivity of wind power cable aging state evaluation are remarkably improved.

The objective of this invention is to provide an infrared reflector that can achieve both suppression of color and appearance defects and heat shielding properties. [Solution] The device has an infrared reflective layer and a light-adjusting layer, and the saturation C of the reflected light when light is incident from the light-adjusting layer side at an incident angle of 60°. * R An infrared reflector characterized in that the value is between 0 and 10, and the average light absorption rate Abs in the 800nm ​​to 1400nm wavelength range, calculated by the following formula 1, satisfies 0% ≤ Abs ≤ 30%. Formula 1: Abs=100-TR T: Average transmittance of light in the 800nm ​​to 1400nm wavelength range when light is incident perpendicularly to the surface from the dimming layer side. R: Average reflectance of light in the 800nm ​​to 1400nm wavelength range when light is incident perpendicularly to the surface from the dimming layer side.

This invention discloses a method and platform for ultraviolet sterilization based on nighttime optical phenotypes applicable to facility agriculture. The method includes: synchronously collecting near-infrared reflectance phenotypes, ultraviolet-induced fluorescence phenotypes, short-wave infrared phenotypes, and weak-light texture features of crops at night as multimodal optical phenotype data; decoupling and feature extraction of the collected multimodal optical phenotype data, and outputting four types of quantitative indices based on disease control needs, crop growth characteristics, and optical matrix dose control requirements; constructing a three-in-one adaptive decision model of "spectral matching - precise dose control - efficiency optimization" based on the four types of quantitative indices to drive the ultraviolet LED sterilizing lamp to achieve full-dimensional precise control; providing real-time optical feedback during the ultraviolet LED sterilizing lamp sterilization process to establish a dual protection mechanism of closed-loop equipment operation and crop protection; and uploading the entire chain of data to a big data cloud platform to optimize the adaptive decision model, thereby achieving precise sterilization.

This invention discloses an energy-saving, low-emissivity glass and its preparation method, relating to the technical field of special glass. The energy-saving, low-emissivity glass includes a first glass and a second glass. The first glass comprises a first glass substrate and a composite double-silver plating layer. From the inside out, the composite double-silver plating layer consists of a base layer, a first dielectric layer, a first functional layer, a first protective layer, a second functional layer, a second dielectric layer, a third functional layer, a second protective layer, a third dielectric layer, and a third protective layer. Specifically, the first and third functional layers are both composed of pure silver or a silver-based alloy, while the second functional layer is composed of TiNbOx. The technical solution of this application effectively balances the relationship between visible light transmittance and infrared reflectance blocking rate, enabling the glass to maintain high light transmittance while possessing excellent thermal insulation performance.

The application relates to the technical field of photovoltaic adhesive films, and discloses a high-reflection black photovoltaic packaging adhesive film, a preparation method thereof and a photovoltaic module. The adhesive film is a multilayer co-extrusion composite structure, comprising an A layer (a black reflection layer), a B layer (an antireflection intermediate layer) and a C layer (a white reflection layer); the A layer comprises a quantitative base resin, a functional black master batch (which comprises a quantitative base resin, carbon black and infrared reflection functional fillers (such as at least one of V02:W, infrared reflection type ITO and ceramic microbeads with surface coating treatment)) and a crosslinking agent; the B layer comprises a quantitative base resin, low-refraction inorganic microspheres and a crosslinking agent; and the C layer comprises a quantitative base resin, a reflective white pigment or master batch and a crosslinking agent. The adhesive film can efficiently reflect light back to the battery piece for secondary absorption and utilization while ensuring a pure black appearance, crosslinking degree and peeling strength, can reduce the interface reflection loss of light in the adhesive film, and can significantly improve the module power and the moisture and heat resistance.

A method, system, and detection method for constructing a model for detecting crude protein content in chicken manure, relating to the field of bioinformatics, solves the problems of high pollution during the detection process and severe information redundancy, high cost, and poor model stability in existing chicken manure crude protein content detection technologies. The method involves obtaining the visible-near-infrared reflectance spectrum and crude protein content of chicken manure from a sample set; obtaining three spectral indices corresponding to the visible-near-infrared reflectance spectrum, MSC preprocessed spectrum, and SNV preprocessed spectrum; selecting the optimal wavelength positions and corresponding spectral indices; constructing a data set by combining the three spectral indices with the crude protein content; fitting the data using various methods; evaluating the various fitting equations; and selecting the best fitting equation, along with the corresponding preprocessing method and wavelength position, as the chicken manure crude protein content detection model. The method described in this invention is applicable to the detection of crude protein content in chicken manure for manure resource utilization.

The present disclosure provides a solar-control infrared-reflecting thin-film stack on a polymeric substrate. The stack comprises a chromium-free nickel nitride or nickel-oxi-nitride blocker layer which results in an improved bendability of the stack which makes it ideal for using on polymeric panes in architectural and automotive glazing wherein such panes sustain expansion, contraction, and bending caused by environmental conditions, such as fluctuating temperature and humidity.

This invention provides a method, device, and system for multi-parameter optical detection of skin, belonging to the field of skin detection technology. The method includes: acquiring ambient light reflectance data of the skin under ambient light conditions; activating red light and infrared light sources at different times to irradiate the skin, acquiring the corresponding red light and infrared reflectance data when the red and infrared light sources are activated; determining the skin color type based on the ambient light reflectance data; calculating the skin moisture parameter based on the ratio of specific reflectance data acquired when the red and infrared light sources are activated, combined with the skin color type; performing a logarithmic transformation on the red light reflectance data, and calculating the skin gloss parameter by combining it with another set of infrared reflectance data; and outputting a detection result including skin color type, moisture parameter, and gloss parameter. This method eliminates the need for switching between multiple devices, is easy to operate, ensures the synergy of various parameters, lays the foundation for a comprehensive skin condition model, and can accurately output comprehensive detection results, meeting the needs of comprehensive skin health assessment.

The application discloses an atmospheric particulate matter concentration detection method and device, medium and product, and relates to the field of atmospheric particulate matter detection. The method comprises the following steps: adsorbing an atmospheric particulate matter sample according to a film, determining a corresponding visible near-infrared reflectance spectrum and a particulate matter mass concentration true value; performing spectrum conversion by using a ring mapping method according to the visible near-infrared reflectance spectrum; constructing a feature extractor by using a ShuffleNetV2 network improved based on an attention mechanism according to a ring mapping image; performing feature fusion on spectral features and corresponding image features; constructing a film-adsorbed particulate matter concentration rapid quantitative detection model by using a machine learning method according to the fused features and the corresponding particulate matter mass concentration true value; and detecting the atmospheric particulate matter concentration by using the film-adsorbed particulate matter concentration rapid quantitative detection model. The application can improve the timeliness and accuracy of film-adsorbed particulate matter mass concentration detection, and greatly reduce the labor and equipment costs.

The invention discloses a transparent cooling film and a preparation process thereof, and relates to the field of thermal insulation materials, a microstructure array is arranged on a transparent base material layer, the microstructure array is composed of light-transmitting gaps and light-reflecting protrusions which are alternately distributed, and the section width ratio of the light-reflecting protrusions to the light-transmitting gaps in the microstructure array is controlled, so that the transparent cooling film is obtained. The obtained transparent cooling film can effectively reflect solar rays and ensure that visible light can penetrate through the transparent cooling film, no secondary heat radiation phenomenon occurs, and the phenomenon of glass burst is avoided. The high visible light transmittance is guaranteed, the visual sense experience is met, the high near-infrared reflectivity is achieved, and the cooling effect is obvious. The transparent cooling film prepared by the process is simple and convenient in preparation process steps and easy to popularize.

This invention relates to the field of heat insulation film technology, specifically disclosing a high-transparency composite heat insulation film and its preparation method. The high-transparency composite heat insulation film comprises 8-10 multilayer film structures; the multilayer film structure, from bottom to top, includes a substrate, a first SiO2 layer, a second TiO2 layer, a third SiO2 layer, a fourth TiO2 layer, a fifth SiO2 layer, a sixth TiO2 layer, and a seventh SiO2 layer. The high-transparency composite heat insulation film of this invention maintains an average transmittance of approximately 89.6% in the visible light band while achieving a high reflectance (50.31%) in the near-infrared band. Compared with commercial heat insulation films, the visible light transmittance of this invention is the highest, and compared with similar high-transparency films, the near-infrared reflectance of this invention is also the highest. This invention uses a genetic optimization algorithm for multilayer film design, which can directly optimize a 10-cycle stacked multi-cycle structure, greatly improving design efficiency and optimization accuracy.