1208 results about "Optical glass" patented technology

A glass material with low refractive index and radiation resistance, method for preparing the same, and applications thereof. The glass material consists of the following components by mole percent: 60-80% SiO2, 2-10% B2O3, 0.1-1% CeO2, 5-10% Na2O, 2-10% K2O, 1-8% Al2O3, 0-2% CaF2, 0-1% As2O3, and 1-5% alkaline earth metal oxides, wherein the alkaline earth metal oxides are selected from at least one of BaO, SrO, CaO, and MgO. The glass material has a refractive index of ≤1.47, a glass transition temperature of ≤550° C., a yield point temperature of 645° C., a softening point temperature of ≤748° C., and a coefficient of thermal expansion of (82-87)×10−7 / ° C. After exposure to a 4700 Gy dose of X-ray radiation, the transmittance decreases by ≤2%. The glass material can be used as cladding glass material for the preparation of optical glass fibers and fiber panels, capable of meeting the requirements for radiation environment applications.

A high-strength, highly transparent nanocrystalline glass, a preparation method therefor, and a use thereof. The high-strength, highly transparent nanocrystalline glass uses precursor minerals mainly comprising synthetic aluminum-rich feldspar-like ceramic glass material, β-spodumene material, cordierite material, synthetic β-dicalcium silicate material, and magnesium aluminum spinel material for the main body of a feldspar-like matrix glass having a stable structure. Ultrafine zirconia powder having a particle size of less than 10 nm is used as a nucleating agent and microcrack damping and pinning agent, to control the formation of nanocrystals smaller than 100 nm in the glass body formed after melting. The volume percentage content of the nanocrystals is 50%-95%, and the nanocrystals together with the matrix glass form a high-strength, highly transparent nanocrystalline glass having a uniform microstructure. The obtained nanocrystalline glass has high hardness, high fracture toughness and high light transmittance, and is suitable for manufacturing various types of optical glass.

The invention belongs to the technical field of glass processing, and particularly relates to a full-automatic optical glass polishing machine which comprises a polishing machine body, two first guide rails are fixedly connected to the interior of the polishing machine body, a mounting table is slidably arranged on the two first guide rails, and a fixing groove is formed in the upper surface of the mounting table; a fixing disc is rotatably arranged in the fixing groove, two fixing blocks are fixedly connected to the upper surface of the glass bearing plate, first groove bodies are formed in the sides, close to each other, of the two fixing blocks, a first pressure spring is fixedly connected to the inner wall of each first groove body, a first magnetic block is fixedly connected to one end of each first pressure spring, and a second magnetic block is fixedly connected to the other end of each first magnetic block. By means of the first magnetic block and the second magnetic block, the problems that due to the fact that optical glass is not properly fixed, the optical glass moves or deviates due to friction force generated by polishing, glass surface polishing distribution is uneven, the thickness is different, and the optical performance and the appearance quality of the optical glass are affected are solved.

The invention discloses a carrying table for special-shaped optical glass processing, and relates to the technical field of optical glass processing.The carrying table comprises a workbench and semicircular glass, the semicircular glass is placed on the workbench, a fixing plate is fixed to the workbench, and second air cylinders are fixed to the lower end face of the fixing plate in a bilateral symmetry mode; a bottom plate is fixed to the output end of the second air cylinder, a positioning mechanism is installed on the bottom plate, supporting mechanisms are arranged on the side edge of the positioning mechanism in a front-back symmetry mode, each supporting mechanism comprises a transverse plate fixed to the workbench, a rotating block is connected to the transverse plate through a bearing, and the rotating angle of the rotating block ranges from 0 degree to 45 degrees. According to the platform deck for processing the special-shaped optical glass, the adjustable rotary supporting mechanism is adopted, so that the platform deck can adapt to positioning and supporting of semicircular glass with different diameters, the adaptability of the platform deck is effectively guaranteed, the supporting effect on different positions of one side of a concave surface of the semicircular glass can be achieved, and the stability of the semicircular glass is guaranteed.

The invention provides optical glass with excellent ultraviolet radiation resistance and relatively low density. The optical glass comprises the following components in percentage by weight: 50 to 70 percent of SiO2; pbO: 12.5% to 30%; na2O: 4%-15%; 2 to 13 percent of K2O; and 1 to 14 percent of BaO, wherein the ratio of SiO2 / PbO is 1.8 to 5.5. Through reasonable component design, the optical glass disclosed by the invention has excellent ultraviolet radiation resistance and relatively low density, and can be widely applied to the fields of imaging, photoetching and the like.

The invention relates to the technical field of aero-engine tests, in particular to an aero-engine turbine blade cooling effect test optical test structure which comprises optical glass, an outer casing and an optical channel pipe. The optical glass is located on the light-in side of the optical channel pipe, and the light-out side of the optical channel pipe faces the target blade. The outer casing is arranged on the outer side of the optical channel pipe in a sleeving mode, and a cooling channel is formed between the inner wall of the outer casing and the outer wall of the optical channel pipe so as to cool the optical channel pipe; a gas film ring is connected between the optical glass base and the light inlet side of the optical channel pipe in a sealed mode and located on the light outlet side of the optical glass. The optical glass base is provided with the cooling gas inlet, and the gas film ring is provided with the gas jet hole, so that the cooling gas performs jet sweeping on the light emitting surface of the optical glass and enters the optical channel pipe to cool the optical channel pipe, thereby improving the accuracy of the cooling effect test result of the turbine blade.

The invention discloses a displacement sensor, a galvanometer motor system, an assembling method and a signal processing method, the displacement sensor is connected with a motor shaft and adopts a transmission-type grating sandwich structure, and the transmission-type grating sandwich structure comprises a light source module which is arranged on the upper layer and comprises an aspheric collimating lens capable of generating uniform parallel light beams; the grating code disc is arranged on the middle layer and made of an optical glass substrate, and the grating code disc is fixed on the motor shaft through a code disc tray; the photoelectric receiving module is arranged on the lower layer, the photoelectric receiving module comprises a plurality of groups of orthogonally arranged photodiodes and photoelectric converters, the photodiodes are used for receiving light and shade changes of light stripes and forming optical signals, and the photoelectric converters are used for receiving the optical signals and converting the optical signals into electric signals. According to the invention, the size of the structure can be reduced, the position subdivision precision is improved, the signal processing speed and the anti-interference capability are improved, and thus the use effect of the galvanometer motor system is improved.

The invention discloses a semiconductor packaging alignment mark manufacturing method and a semiconductor packaging alignment mark product. The semiconductor packaging alignment mark manufacturing method comprises the following steps that a cofferdam is manufactured at the position, corresponding to a TSV area, on light glass; the cofferdam is coated with bonding glue; bonding the wafer on the optical glass and grinding and thinning the wafer; performing etching to form a first-order groove and an alignment Mark; completing the etching of the silicon through hole; preparing a dielectric layer on the wafer; preparing a passivation layer on the dielectric layer; preparing an RDL (redistribution layer); pre-cutting a groove, and half-cutting to a cofferdam; preparing a solder mask layer; and planting or printing a solder ball, and then cutting into a final finished product. According to the invention, the alignment function of the photoetching process after pre-cutting can be realized, the overall process capability can be improved, the process steps are reduced, the product manufacturing period is shortened, the packaging cost is reduced, and the product competitiveness is improved; a special laser marking station is not needed, wafer surface pollution caused by laser marking is reduced, operators of the original laser marking station are saved, manpower and material resources are saved, one manufacturing process is saved, and the packaging cost is reduced.

The invention belongs to the technical field of electromagnetic shielding of optical transparent parts, and particularly relates to a large-slope conformal curved surface electromagnetic shielding transparent light window considering infrared visible light laser, which consists of a curved surface optical glass substrate, an electromagnetic shielding layer and a surface protection layer, the electromagnetic shielding layer is of a multi-layer electromagnetic shielding structure composed of a conductive polymer transparent film and a randomly-distributed metal mesh film. The electromagnetic shielding transparent light window has high shielding characteristics in X and S wave bands, keeps excellent optical transmission performance, and can meet the requirements of high imaging quality and high stealth characteristics of a high-performance seeker. Meanwhile, the appearance of the light window is trimmed and the design parameters of the shielding layer are adjusted, so that the service requirements of the seeker in different combat scenes can be met, and the electromagnetic shielding transparent light window with excellent performance is provided for the seeker of weapon equipment.

The invention provides a matt coating composition, a matt coating and a preparation method and application thereof, the matt coating composition comprises the following components: a matt material, a surfactant, a dehydrating agent, polyamic acid and a solvent, and the matt coating composition has a high refractive index and a high matt coefficient through matching of the components. The coating can be coated on the surface of an optical glass element, and a coating is obtained after curing. The refractive index of the extinction coating at the wavelength of 633 nm is larger than 1.70, the extinction coefficient is larger than or equal to 0.09, it is measured that the interface reflectivity of the extinction coating and optical glass with the refractive index of 1.74 can be reduced to 0.026% in the visible spectrum range (400-800 nm), and the extinction coating is superior to current mainstream commercial extinction black paint. The matt coating is simple in preparation process and high in heat resistance, has a wide application prospect in the field of stray light suppression of an optical system, and is suitable for a high-temperature optical system.

The invention belongs to the technical field of optical glass, and discloses an impact test device for manufacturing optical glass, which comprises a bearing platform, a guide assembly mounted on the bearing platform, a support assembly arranged on the guide assembly, and an impact test assembly arranged on the support assembly, the protection assembly is mounted on the supporting assembly; a steel ball vertically falls to impact optical glass, two supporting assemblies are pushed to move oppositely in the falling process, a movable frame moves to the vertical end along a guide groove through a connecting piece, and at the moment, the movable frame and a supporting roller rod move oppositely along the lower end of the guide groove under the action of a second tension spring; the distance between the two supporting roller rods is shortened by rotating the two supporting roller rods, the two supporting roller rods move downwards and the distance between the two supporting roller rods is shortened in the rebounding process of the steel ball, the steel ball is supported through the two supporting roller rods, the situation that the steel ball rebounds and secondarily impacts optical glass is avoided, and therefore the accuracy of the optical glass impact test is guaranteed.

The invention belongs to the technical field of optical glass, and discloses an optical glass structure with a high-hardness scratch-resistant coating, which comprises the following structures: a chemically strengthened glass substrate; the refractive index gradient transition layer is deposited on the surface of the substrate; and the diamond-like carbon-based hard coating covers the surface of the transition layer. The defect is thoroughly overcome through a gradient strengthening system, the diamond-like carbon coating resists invasion of external abrasion particles through a crystal bonding network close to absolute hardness, so that the surface microhardness breaks through the upper limit of a brittle material, the gradient transition layer constructs an elastic buffer strip below the coating, impact stress is dissipated through the porous nano laminated layer, and the hardness of the coating is improved. The cooperation of the two ensures that no visible scratch is generated on the glass surface even if the glass surface is exposed to a high-wear environment for a long time, thereby fundamentally blocking linkage failures such as light path scattering, imaging blurring and dispersion imbalance caused by surface damage, and ensuring that the light transmittance of a precise optical system in the whole life cycle is stabilized at a theoretical extreme value.

The invention relates to the technical field of machine vision detection, and particularly discloses a high-temperature medium-thickness steel plate contour detection device which comprises a detection room, the detection room is arranged above a roller way, and an industrial air conditioner is arranged in the detection room; a first window and a second window are arranged at the bottom of the detection room, bottom-layer optical glass is mounted at the first window and the second window, a linear array camera mechanism and an area-array camera mechanism are arranged in the detection room, the linear array camera mechanism is arranged corresponding to the first window, and the area-array camera mechanism is arranged corresponding to the second window; a laser and a velocimeter are mounted on the area-array camera mechanism, a laser line of the laser on the steel plate is in the advancing direction of the steel plate, and the laser line of the laser and a laser point of the velocimeter are on the same straight line; and heat insulation cotton is arranged on a room body of the detection room. The detection room is installed above the roller way, all components for detection are installed in the room, maintenance and installation are implemented in the room, walking safety of personnel is guaranteed, and the dustproof problem can be solved.

The utility model discloses a cutting device for optical glass processing, which comprises a rack, the top of the rack is fixedly provided with a fixing frame, the fixing frame is slidably provided with a cutting assembly, the middle of the rack is slidably provided with a moving table, and optical glass waste passes through a waste hole and falls to one end of a blanking frame by controlling a material pushing rod to move. The optical glass waste falls onto the waste conveying belt along one end of the discharging frame, automatic discharging of the optical glass waste is achieved, people do not need to clean the optical glass waste manually, the cleaning efficiency of the optical glass waste is improved, then the supporting plate is controlled to descend and drive the supporting plate to rotate, and the automatic discharging of the optical glass waste is achieved. When the optical glass cutting machine works, the optical glass on the supporting plate is driven to fall to the other end of the discharging frame, the optical glass falls to the finished product conveying belt along the other end of the discharging frame, discharging of the optical glass finished products and optical glass waste is achieved, people do not need to manually clean the optical glass cut finished products, and the collecting efficiency of the optical glass finished products is improved.

The utility model belongs to the technical field of optical element machining devices, and discloses an automatic centering device in optical element machining, which comprises a machining base, a rotating table rotationally mounted at the top of the machining base and an electric permanent magnetic chuck arranged at the top of the rotating table, and a rotating mechanism for driving the rotating table to rotate is arranged on the machining base. And a plurality of transverse plates slidably connected with the side wall of the machining base are arranged on the machining base in a penetrating mode, the transverse plates are evenly distributed about the axis of the rotating table, a vertical rod is fixed to the top of each transverse plate, and an adjusting mechanism used for driving the transverse plates to be close to or away from one another at the same time is arranged on the machining base. According to the optical glass polishing device, by arranging the adjusting mechanism, the multiple transverse plates drive the vertical rods fixed to the transverse plates to be close to one another at the same time, so that the optical glass placed on the rotating table can be centered, and the polishing effect of the optical glass is ensured.

The invention belongs to the technical field of grinding materials and grinding tools, and particularly relates to a diamond electroplated grinding wheel directionally arranged in a magnetic field and a preparation method and application thereof. Firstly, electroplating liquid is added into an electroplating bath, then 30%-40% of magnetic diamond abrasive materials are added into the electroplating liquid, directional magnetic sanding is carried out with the grinding wheel base body A as a cathode and a nickel plate as an anode, the magnetic field intensity is controlled to be 0.1-1 T, the cathode current density is controlled to be 0.4 A / dm < 2 >-0.6 A / dm < 2 >, the electroplating time is 10-20 min, and a grinding wheel base body B is obtained; removing floating sand from the grinding wheel base body B to obtain a grinding wheel base body C; and the grinding wheel base body C is thickened to obtain a grinding wheel base body D, and the grinding wheel base body D is modified to obtain the grinding wheel. The grinding rate of the manufactured grinding wheel is reduced by 10%-25%, the service life is prolonged by 30%-50%, the machined surface roughness (Ra) can reach 0.3 micrometer or below, and the machined surface precision is reduced by 10%-25%. The grinding wheel is applied to nanoscale grinding of optical glass, sapphire and silicon carbide wafers and forming machining of turbine blade mortises and ceramic matrix composites, and the precision and roughness of the grinding wheel can be effectively guaranteed.

The utility model relates to the technical field of sports glasses, in particular to sports optical glasses with polarizers, which comprise a glasses frame and lenses, a support frame is arranged in the glasses frame, the lenses are connected with the glasses frame and the support frame, a nose pad is arranged on the support frame, one side of the glasses frame is provided with the polarizers, and the other side of the glasses frame is provided with the polarizers. The polariscope is rotationally connected with the mirror frame through a connecting structure; the connecting structure comprises a plug connector which is connected with the mirror frame in an inserted mode, a rotating piece is arranged on the plug connector in a rotating mode, the rotating piece is fixedly connected with the polariscope, and the rotating piece is detachably connected with the plug connector. When the polarizer is not used, the polarizer can be overturned upwards to achieve the state that the polarizer is not used, and the elastic plate is arranged to fix the plug connector in the connecting structure, so that the connecting structure and the polarizer are prevented from falling off.

The invention discloses a multilayer optical film, a preparation method thereof and an imaging device. The preparation method comprises the following steps: providing an optical glass substrate, depositing an anti-reflection layer on the optical glass substrate, carrying out pattern design on the anti-reflection layer by using a beam splitting film design algorithm, and transferring a designed beam splitting pattern to the anti-reflection layer; depositing a high-damage-threshold protection layer on the anti-reflection layer, depositing a thermal management layer on the high-damage-threshold protection layer, depositing a reflection layer on the thermal management layer in an evaporation mode, forming a multi-layer film structure, carrying out annealing treatment on the formed multi-layer film structure, and setting the annealing condition as a preset temperature so as to improve the interface bonding force between the multi-layer film structure. Obtaining a multi-layer optical film; through the optimal design of the whole preparation process, the laser damage resistance is considered, the heat management layer provides heat stability, and the reflecting layer improves the efficiency of an optical system, so that the multi-layer optical film with high performance and multiple functions is manufactured, and the multi-layer optical film is suitable for high requirements of a laser display system.

The invention discloses an optical visualization test device suitable for transverse jet mixing characteristic research under different conditions. The optical visualization test device mainly comprises an air inlet diffusion section, a main body mixing section and an exhaust structure section. The main body mixing section is of a double-layer structure with an inner-layer main temperature bearing function and an outer-layer main pressure bearing function, an independent cooling cavity is formed between the flame tube and the cartridge receiver, replaceable flat straight flow channel or contraction flow channel installation bases are arranged on the upper wall face and the lower wall face of the flame tube, and multiple functional modules such as main combustion holes and cooling gas film flow channels are integrated. Each wall surface is provided with an optical glass window, and multi-path laser incidence and image acquisition are supported. Blended gas enters the blending holes through the gas collection tank and the flow uniformizing plate, transverse jet flow and main flow blending is formed, and the device is suitable for visual measurement under different rotational flow intensities, cooling conditions and wall surface structures. And the exhaust section is provided with a spraying and water jacket cooling system, so that the exhaust temperature can be effectively controlled. The device is flexible in structure, adjustable in parameter and suitable for combustion chamber jet mixing mechanism research and optical measurement verification.

The invention discloses a position-sensitive reactor core optical fiber detector and a preparation method thereof, and relates to the field of radiation detection, the position-sensitive reactor core optical fiber detector comprises a probe (1), an optical fiber bundle (2) and an electronics system (3), and the probe (1), the optical fiber bundle (2) and the electronics system (3) are externally connected in sequence by using a high-temperature-resistant sealant (4); the probe (1) comprises a scintillator (11), an optical glass light guide rod (12) and a protective shell (13); the scintillator (11) and the optical glass light guide rod (12) are sequentially arranged according to a sandwich structure and are arranged in the protective shell (13); the optical fiber bundle (2) comprises a metal coating optical fiber (21), a high-temperature-resistant adhesive (22) and a stainless steel metal coil (23). The problems that an existing optical fiber detector cannot be used for detection work under the conditions of high temperature, high pressure and strong irradiation, and the existing optical fiber detector can only achieve flux detection and cannot be used for position detection are solved.

The invention relates to the technical field of glass detection, in particular to a salt spray test device for optical glass performance detection and a test method of the salt spray test device. According to the technical scheme, a plurality of placement frames distributed at equal intervals are installed in a test box body, each placement frame comprises a rotatable frame body, air guide plates are arranged on the two sides of the test box body, a water absorption plate is arranged on the top face of a cover body, arc-shaped flow guide plates are installed at the corners of the cover body in a sliding mode, and the arc-shaped flow guide plates and the water absorption plates are arranged in an attached mode; a pushing piece is arranged on the arc-shaped flow guide plate, and a water diversion piece is arranged in the water absorption plate. The air deflectors and the windward groove bodies are installed on the two sides of the test box body, air is introduced, the guiding and drainage effects on salt mist are formed, rapid diffusion of the salt mist is guaranteed, in addition, when the frame body rotates, the air deflectors incline, and therefore the salt mist can be rapidly dispersed. Therefore, the changed direction can still guide the salt mist airflow to flow towards the optical glass experiment sheet in a path.

The present invention discloses a large-size optical glass flatness adaptive grinding device, which relates to the field of optical glass surface treatment, including a material table for carrying the optical glass, and a gantry arranged across the material table, a linear motion mechanism is rotatably arranged on the top of the gantry, the linear motion mechanism is driven to rotate by a first motor, the linear motion mechanism is connected to a lifting mechanism, the linear motion mechanism is used to drive the lifting mechanism to move horizontally, the lifting mechanism is connected to a grinding piece, and the lifting mechanism is used to drive the grinding piece to move up and down. The present invention controls two clamping arms to move together, so as to automatically center the position of the optical glass, and at the same time, the two clamping arms limit the grinding range. When the grinding piece moves to the edge of the optical glass, the micro switch touches the clamping arm to drive the grinding piece to move in the opposite direction, and the grinding piece keeps moving back and forth within the range limited by the two clamping arms, automatically adapting to the size alignment of the optical glass and performing precise and comprehensive grinding processing.

The invention discloses a compensation printing method for resistance deviation of a vehicle-mounted optical glass printing heating wire, and relates to the technical field of functional material printing. On one hand, a prediction model based on individual physical characteristics of a vehicle-mounted optical glass substrate and conductive slurry is constructed before printing; according to the method, most printing deviation can be predicted and inhibited from the source, traditional passive error correction is converted into active prevention, the consistency and the qualified rate of resistance values of final products are improved, on one hand, actual measurement data of the final products are fed back to an initial prediction model for calibration, and on the other hand, the accuracy of the final products is improved; the whole printing method can be continuously optimized along with production, the adaptability to material batch fluctuation, environment change and small aging of equipment is enhanced, the dependence on artificial experience is reduced, the long-term stability of product quality is guaranteed, and on the other hand, through innovative combination of physical pre-compensation and energy fine adjustment, the production efficiency is improved. And a cooperative compensation effect is shown.

The invention relates to the technical field of glass lens detection, in particular to a quality detection machine for optical glass lens production, which comprises a cylinder I; the shell is connected with a switching assembly; the switching assembly is connected with a plurality of cylinders I; each cylinder I is detachably connected with a top cover; a rubber ring is fixedly connected to the inner side of each top cover; the rubber ring is elastic; a limiting block is fixedly connected to the inner side of each rubber ring; a through hole is formed in the limiting block; a first cylinder, a first circular ring and a second cylinder are matched to clamp a glass lens piece for detection operation, the first cylinder can also be matched with a top cover to intercept glass fragments splashed in the detection process, safety is high, all the generated glass fragments are located on the inner side of the first cylinder, and detection efficiency is high. Glass fragments can be quickly poured out and removed only by manually pouring the cylinder, the cleaning operation is convenient and fast, meanwhile, the long rod conducts extrusion testing on the glass lens piece from different positions, and the diversity of testing results can be improved.

The invention belongs to the technical field of optical glass. The invention relates to an electrochromic glass device, in particular to a preparation method of the electrochromic glass device. The preparation method comprises the following specific preparation steps: cleaning the surface of a glass substrate, and depositing an indium tin oxide transparent conductive layer on the surface of the glass substrate by adopting magnetron sputtering; the preparation method comprises the following steps: by taking nano spherical silicon dioxide as a template, dispersing the nano spherical silicon dioxide in an ethanol solution, then adding a sodium tungstate solution, then adjusting the pH value to 2-3, carrying out a stirring reaction, and then cleaning with a sodium hydroxide solution to remove the template so as to obtain a hollow spherical precursor dispersion liquid; coating the hollow spherical precursor dispersion liquid on the surface of the transparent conductive layer in a spin coating mode, drying and annealing; preparing a liquid electrolyte: taking propylene carbonate as a solvent, and taking lithium perchlorate as an electrolyte lithium salt; niO is deposited on the surface of the WO3 electrochromic layer to serve as a counter electrode through magnetron sputtering; epoxy resin is adopted to package the edge, after liquid electrolyte is injected, internal residual bubbles are removed through hot pressing, and the product is obtained.

The invention relates to the technical field of industrial intelligent regulation and control, and particularly discloses an optical glass production intelligent regulation and control system based on multi-parameter collaborative optimization. Smelting temperature, pressure, liquid level, rotating speed and energy consumption data are synchronously acquired through a multi-parameter real-time acquisition module; the feature space construction module is used for carrying out standardization, weighted covariance calculation and eigenvalue decomposition on the data and extracting low-dimensional eigenvectors representing key states of the production process; the dynamic trajectory prediction module predicts an optimized trajectory meeting the process constraint in the future according to the feature vector; and the real-time cooperative regulation and control module is used for cooperatively regulating the heating power, the opening degree of a pressure valve and the stirring rotating speed by adopting a dynamic decoupling and feedforward-feedback composite control strategy based on the track.

The invention relates to a lithium ion battery thermal runaway multi-dimensional signal coupling test device in the technical field of lithium ion battery thermal safety. The lithium ion battery thermal runaway multi-dimensional signal coupling test device comprises a closed test container, a signal acquisition system, an optical visualization system, a temperature control system, a gas acquisition system and an inflation system, the closed test container is a cube, four orthogonal through holes are formed in the front, rear, left and right outer walls of the closed test container, and optical glass is mounted on the left and right through holes; the signal acquisition system comprises an impact force sensor, a pressure sensor, a thermocouple, a battery test system, a data acquisition card and an analysis device; the optical visualization system comprises a camera, a point light source, a reflecting mirror, a concave mirror and a blade; the temperature control system comprises a heating rod, a heating sheet, a power supply and a controller; the gas collection system comprises an exhaust channel, a gas collection bag and a gas chromatograph; the inflation system comprises an inflation pipeline, a pressure regulating valve and an inert gas tank. According to the invention, the air injection state generated by the battery or the battery module in the thermal runaway process can be intuitively reflected.

A novel optical glass cleaning and drying device belongs to the technical field of cleaning and drying equipment and comprises an air blower, a cleaning box, a bottom plate, an electromagnetic valve, a spray washing pipe and ultrasonic cleaning equipment. A heating mechanism is further arranged, a supporting plate is installed in the cleaning box, and the spray-washing pipe is installed at the upper end in the cleaning box; the air blower and the cleaning box are installed at the upper end of the bottom plate, an air outlet of the air blower is connected with one end of the first electromagnetic valve, one end of the first electromagnetic valve and one end of the second electromagnetic valve are connected with the outer side of the paint spraying pipe in parallel, and the other end of the second electromagnetic valve is connected with a tap water pipe. The lower portion of the cleaning box is connected with the third electromagnetic valve, the heating mechanism comprises an electric heating pipe and an outer barrel, communicating pipes are installed at the two side ends of the outer barrel respectively, the side end of the first communicating pipe is connected with an air inlet of the air blower, the electric heating pipe is installed at the outer side end of the outer barrel, and the ultrasonic generator is installed in the element box. The ultrasonic cleaning and drying device integrates ultrasonic cleaning, water cleaning and drying, so that the working efficiency is improved.

The present invention provides an optical glass comprising, by weight, 1-12% SiO2, 5-18% B2O3, 40-60% La2O3, 4-20% Y2O3, 1-12% ZrO2, 4-20% Nb2O5, and 4-18% TiO2. Through rational component design, the present invention can produce optical glass with excellent devitrification resistance at a low raw material cost.

The invention provides a multispectral coating method for a linear gradual change optical filter and the linear gradual change optical filter, and the method comprises the steps: S1, putting optical glass into a cleaning agent for ultrasonic cleaning, and obtaining a substrate of the linear gradual change optical filter to be coated; s2, putting the substrate into a reaction cavity of a radio frequency magnetic control instrument, closing the reaction cavity, and setting environmental parameters of multispectral coating; s3, under the environmental parameters, sputtering and depositing target materials on the surface of the substrate by adopting double-target-position radio frequency magnetic control, using SiO2 and Si as the target materials for the double target positions respectively, and switching to use different target positions to alternately carry out sputtering deposition of the target materials by adjusting the power interval of the radio frequency magnetic control; and S4, closing the radio frequency magnetic control instrument, keeping the reaction cavity closed, naturally cooling to a preset cooling temperature, opening the reaction cavity, and taking out the coated substrate as the linear gradual change optical filter. The process is simple, and the optical filter finished product is good in infrared spectrum performance and suitable for various scenes.