1614 results about "Optical glass" patented technology

Oligomers that contain an ethylenically unsaturated group, a silane group, and an aspartate group and / or hydantoin group are described. Also disclosed are methods for producing and using such compounds, such as their use in coating compositions, such as coating compositions suitable for application to optical glass fiber substrates.

The invention provides an optical glass cleaning device, which relates to the technical field of optical glass cleaning, and comprises a cleaning pool, a cleaning pool, a vertical moving mechanism, a clamping mechanism and a turnover mechanism, the vertical moving mechanism comprises two vertical plates arranged on the back face of the cleaning pool, and a transverse plate is fixedly arranged at the tops of the two vertical plates. According to the scheme, through cooperative use of a gear and a gear plate, a rotating shaft is used for driving a clamping mechanism and an optical glass body to rotate by 90 degrees anticlockwise, so that the optical glass body is in a vertical state, chemical cleaning liquid on the surface of the optical glass body drops into a cleaning pool, the surface of the optical glass body is in a relatively clean state, and the cleaning effect is improved. When the surface of the optical glass body is wiped on the back side, no water stain is left on the surface of the optical glass body, so that the cleaning effect on the surface of the optical glass body is improved, the replacement frequency of the cleaning cloth can be reduced, and the cleaning efficiency of the optical glass body is improved.

The invention discloses efficient cleaning equipment for finished optical glass lenses, and belongs to the technical field of optical lens conveying, the efficient cleaning equipment comprises a centralized heating tank body and a conveying track seat which are arranged on a supporting seat, a detachable tank cover is arranged at the end part of the centralized heating tank body, and the detachable tank cover is connected with a fixed-distance conveying disc through a pushing conveying piece; and a lens sticky glue impurity cleaning unit, a lens rotary deburring unit and a conveying unit are sequentially arranged on the two sides of the conveying track base. The lens slicing device is designed for solving the problem that burrs exist after lenses are sliced, and in the process that the lenses are conveyed one by one through the conveying grooves in the interval type conveying belt, the suction cup type driving pieces arranged on the two sides of the conveying rail base drive the lenses to rotate; and in the rotating process, the original right-angle cutting edge is gradually ground into an inclined surface through the burr trimming piece, so that the burrs on the cutting edge are treated, the quality defect caused by the fact that the burrs enter a mirror surface in the subsequent double-sided grinding process is avoided, and the sheet forming rate of lens processing is remarkably improved.

The invention discloses an optical glass production and processing monitoring system based on the Internet of Things technology, which relates to the technical field of optical glass production monitoring and comprises an Internet of Things data collector component, a data processing analyzer component, an intelligent monitoring and early warning component, a user interaction control screen component and an authority manager component. Key parameter data in the production and processing process are collected in real time through the Internet of Things data collector component, real-time processing and analysis are carried out through a big data processing engine and a machine intelligent learning algorithm library, a prediction algorithm is constructed in combination with historical data to predict the production trend, the system can predict the future production trend, and the production efficiency is improved. And scanning and one-by-one calculation are carried out for each time period in the production cycle, so that the predicted production capacity or production trend of each time point in the whole production cycle is obtained, the production efficiency and the quality control are improved, and intelligent management and optimization of the production process are realized through adaptive learning and fault prediction functions.

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 provides an optical glass dropping information prediction method and device, electronic equipment and a storage medium, and relates to the technical field of optical glass dropping information prediction. According to the method, firstly, sample process data and performance data labels are obtained; secondly, based on at least one kind of associated data having influence on the performance of the optical glass drops, classifying the multiple pieces of sample process data to obtain at least one data classification set; then, for each data classification set, based on each piece of sample process data in the data classification set and the corresponding performance data label, training to form a target material dropping information prediction model; and finally, predicting the target optical glass drop description data by using the target drop information prediction model, and outputting target optical glass drop prediction data. On the basis of the content, the problem that in the prior art, the production cost of optical glass drops is high can be solved.

The utility model discloses a fixture for heating optical glass, which comprises an operating table, a lower clamping plate is mounted at the bottom end of the operating table, an upper clamping plate is arranged at the upper end of the operating table, a cross rod is mounted at the side end of the operating table, a threaded rod is rotatably connected in the cross rod, and a driving motor is mounted at the front end of the cross rod. And the output end of the driving motor is connected to the end part of the threaded rod. A mounting seat capable of moving back and forth is mounted at the side end of an operation table, and a detachable movable plate is mounted in the mounting seat, so that when the bottom end of an upper clamping plate needs to be cleaned, a driving motor can be driven to enable a threaded rod to rotate, and a threaded sleeve drives a guide sliding block and the mounting seat to transversely move along a guide groove under the action of a thread; the movable plate can be driven by the mounting base to move to the bottom end of the upper clamping plate, the bottom end of the upper clamping plate is quickly cleaned, the bottom of the upper clamping plate does not need to be manually cleaned, chippings are prevented from being attached to the bottom end of the upper clamping plate, and therefore the use convenience of the device is improved.

The utility model relates to the technical field of optical glass manufacturing, in particular to a film coating device for optical glass manufacturing, which comprises a film coating box, a tool assembly is arranged in the film coating box, the tool assembly comprises a tool table, a placing groove is arranged on the top surface of the tool table, a plurality of silica gel suckers are arranged on the inner bottom surface of the placing groove, and the silica gel suckers are arranged in the placing groove. Optical glass is adsorbed and placed on the tops of the silica gel suction cups, a top cover is arranged on the top face of the tool table and located on the periphery of the containing groove, a water collecting groove is formed in the circumferential face of an inner cavity of the top cover, a fixing plate is arranged on the lower side of the tool table, and a supporting rotating sleeve is fixedly arranged on one side of the fixing plate; and a rotating shaft is vertically arranged on the end face of the supporting rotating sleeve, the rotating shaft is vertically arranged on one side of the film coating box, and a functional mechanism used for cleaning and film coating is arranged on the other side, opposite to the supporting rotating sleeve, of the fixing plate. According to the utility model, the coating cannot be deposited on the surface of the optical glass, and the uniformity of a coating film of the optical glass is improved.

The invention discloses an optical coherence tomography optical path structure and a dispersion compensation method thereof. The light path structure comprises a coherent light source, a 2 * 2 optical fiber coupler, a reference light path, a sample light path, an equal-wave-number spectrograph and an upper computer; low-coherence broadband light emitted by the coherent light source is divided into reference light and sample light after passing through the 2 * 2 optical fiber coupler, the reference light and the sample light are sequentially transmitted in a reference light path and a sample light path, the reference light and the sample light are retroreflected through a sample and a reference mirror and are retroreflected to the 2 * 2 optical fiber coupler according to an original light path, interference is generated, and interference light beams are transmitted to the equal-wave-number spectrometer. Interference light beams are split to an upper computer according to equal wave number intervals, and a tomographic image of a sample is obtained through algorithm processing of the upper computer. By means of the structure, the existing dispersion loss problem is solved from the source, most dispersion generated by a light path is solved, other dispersion is eliminated by adding a dispersion compensating mirror made of optical glass materials with certain thickness in the light path through algorithm calculation, the algorithm is simple, convenient and fast, and the imaging speed is high.

The invention discloses a self-cleaning device for observation window glass of a high-temperature dust removal pipeline detector of a bag type dust remover, and belongs to the technical field of cleaning equipment. A bucket-shaped front chamber is arranged on the outer side wall of a high-temperature dust removal pipeline, one side of the bucket-shaped front chamber is fixedly connected with a case bin through a connecting piece, and an observation opening is machined in the case bin; optical glass used for observing the interior of the high-temperature dust removal pipeline is evenly machined on the glass carrying disc in the circumferential direction, a spark detection device host is arranged on the fixing support, and a pre-cleaning rubber strip, a main cleaning rubber strip and a liquid collection rubber strip are arranged on an inner side plate of the machine box bin. The glass carrying disc is periodically rotated through the stepping motor, while the glass carrying disc rotates, the cleaning mechanism automatically completes cleaning of polluted glass, and the cleaned observation window glass is periodically alternated, so that self-cleaning of the observation window glass of the high-temperature dust removal pipeline detector is achieved, blinding failure of the detector is avoided, and the service life of the detector is prolonged. Meanwhile, the working efficiency of the spark monitoring device can be improved, the detector is free of maintenance in the working period, and the equipment operation and maintenance cost is reduced.

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 discloses an optical glass performance detection method and system, and relates to the technical field of optical detection.The method comprises the steps that according to application classification of optical glass, physical defect types are determined, a multi-channel bright and dark field is configured, and an optical path polarization test is conducted through incident light to obtain an optical detection coefficient. A sensing image set is collected through cooperative operation of a light controller and an image sensor, defect detection and position splicing are completed in combination with an image processing module, and a defect detection list is generated. And integrating the optical detection coefficient and the defect detection list to carry out weighting calculation, and finally obtaining a performance detection result of the detection target. The technical problem that the recognition precision of various physical defects in existing optical glass performance detection is insufficient is solved, and the technical effect of improving the recognition precision of various physical defects in optical glass detection is achieved.

To provide an optical glass with excellent formability, high stability during the production process, and excellent color correction over a broad range, as well as an optical element including the optical glass.SOLUTION: An optical glass according to the present invention is characterized in that: the refractive index (nd) at the helium d-line wavelength (587.6 nm) is in the range of 1.45000 to 1.65000; the ISO color characteristic index (ISO / CCI) is 0.00 for blue (B), 0.80 or less for green (G), and 0.80 or less for red (R); and the value of S, derived from the equation S=E α / (1-ν), is within the range of 0.70×106 or more and less than 1.03×106 (Pa / °C), where E denotes Young's modulus (unit: GPa), α denotes the average linear expansion coefficient in the temperature range of 100°C to 300°C (unit: 10-7°C-1), and ν denotes Poisson's ratio.SELECTED DRAWING: None

The invention discloses an optical glass smelting process prediction method, system, equipment and medium, and relates to the technical field of optical glass, the method comprises the following steps: obtaining smelting process data and bubble evaluation data of optical glass, and carrying out feature extraction on image data and ultrasonic reflection signals to obtain corresponding bubble features; based on a first preset model, obtaining a bubble level prediction model according to the bubble features and the level data; based on a second preset model, a bubble feature prediction model is obtained according to the smelting process data and the bubble features; and obtaining a target bubble level and a limiting condition, traversing at least one of the bubble density, the bubble area and the bubble depth based on a random network search algorithm, and calling the bubble level prediction model for prediction to obtain a bubble level, and taking the bubble parameter corresponding to the bubble level consistent with the target bubble level as a target bubble characteristic parameter. The method has the effect of reducing the cost of the glass smelting process.

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 belongs to the technical field of shock tunnel tests, and discloses a test device for measuring multiple parameters in a high-enthalpy shock tunnel tube. The multi-parameter measurement test device is installed on a driven section of the shock tube and comprises a front high-pressure transition section, a high-pressure visible section and a rear high-pressure transition section which are sequentially connected from front to back through flanges. The multi-parameter measurement test device adopts built-in circular tube thick-wall optical glass to perform non-contact optical measurement, so that the pressure bearing safety is ensured, and the influence of the change of an inner flow channel on a flow field is avoided; the correction lens is arranged on the outer side of the optical glass, so that the problem of imaging distortion of the circular tube is avoided, and more effective test data is further obtained; meanwhile, the device is combined with a reserved surface laser incidence window, a line laser incidence and receiving interface, a pressure sensor interface and a heat flow sensor interface, is used for measuring multiple parameters such as a wave system structure, components, pressure and heat flow flowing in the shock tube, and has engineering practical value.

The invention discloses a preparation method of a flexible magneto-optical composite material which is low in cost and easy to form, Fe3O4 or CoFe2O4 or NiFe2O4 nanoparticles which have a strong magneto-optical effect but are extremely easy to agglomerate are uniformly dispersed in ZIF-8 with fixed pores by adopting an in-situ symbiosis technology, and PgC5Cu is used for modifying the surface of the ZIF-8 to serve as a bridging agent, so that the ZIF-8 is uniformly dispersed in PMMA (Polymethyl Methacrylate); and the composite material with excellent magneto-optical characteristics is successfully constructed. The innovative design not only maintains the original structural stability and optical transparency of the material, but also endows the material with unprecedented flexibility and machinability, and provides possibility for realizing light weight, portability and flexibility of magneto-optical devices. Compared with traditional pure inorganic magneto-optical crystals, magneto-optical glass and other materials, the preparation method is simple, the production period is short, energy consumption and cost are remarkably reduced, and the material has the advantages of being easy to form, high in flexibility and the like and can adapt to wider application scenes.

The utility model relates to the technical field of melting furnaces, in particular to a furnace bottom structure for an infrared optical glass melting furnace, which comprises a supporting plate part, a first heat insulation round brick, a furnace bottom supporting plate and a second heat insulation round brick, the first heat insulation layer is arranged between the first heat insulation round bricks and the bottom plate; the crucible fixing part comprises a second heat-insulating round brick nested on one side, deviating from the bottom plate, of the first heat-insulating round brick, a crucible support nested on one side, deviating from the bottom plate, of the second heat-insulating round brick, and a crucible claw group arranged on one side, deviating from the bottom plate, of the crucible support; and the eccentric opening penetrates through the crucible fixing part and the supporting plate part and is deviated from the center line of the furnace bottom structure. According to the utility model, the eccentric opening is formed in the furnace bottom structure, so that the straight channel pouring design of the vertical furnace is realized, the performance of a poured plastic solution is uniform and controllable, devitrification is not generated, and the yield of products is improved.

The embodiment of the invention discloses a visible light and near-infrared laser common-aperture common-path continuous zooming optical system. The optical system comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens, a tenth lens, an eleventh lens and a twelfth lens which are sequentially arranged on the same optical axis from the object side to the image side, wherein all the lenses are made of optical glass or optical crystal materials. According to the invention, a dual-band common-path zooming form is adopted, and the visible light band and the near-infrared band are zoomed and imaged at the same time. According to the dual-band common-path continuous zooming optical system provided by the embodiment of the invention, a spectroscope and a compensation lens group are not used, and imaging is performed on the same focal plane, so that the size of the optical system is further reduced, the weight of the system is reduced, the complexity and the assembly difficulty of the system are further reduced, and the cost is also reduced.

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 discloses a vehicle-mounted holographic projection device and a vehicle, and belongs to the technical field of vehicle-mounted display.The vehicle-mounted holographic projection device comprises a bottom cover, an IVI host is arranged on the bottom cover, a holographic projection shell is buckled to the top of the bottom cover, a loudspeaker is arranged on the side face of the bottom cover through a support, and a display screen is obliquely arranged on the bottom cover through a supporting frame; an instruction acquisition sensor is arranged at one end, close to the top of the bottom cover, of the display screen, optical glass is arranged at the position, close to the top, of the holographic projection shell through a screen support, and decorative glass is arranged at the position, corresponding to the optical glass and the instruction acquisition sensor, of the top of the holographic projection shell in a closed mode. According to the vehicle-mounted holographic projection device and the vehicle, holographic projection is used, the integrated continuity of interior modeling can be improved, non-contact operation is achieved, gesture and sound control is more convenient, and the science and technology feeling of a product is improved through change of the holographic projection display effect.

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 relates to the technical field of detection, in particular to optical glass surface scratch detection equipment and a detection method.The optical glass surface scratch detection equipment comprises a platform for installing glass and X-axis and Y-axis sliding table modules installed on the platform, the middle of the platform is designed in a penetrating mode, the X-axis and Y-axis sliding table modules are arranged to be two groups and are installed above and below the platform respectively, and the X-axis and Y-axis sliding table modules are arranged on the platform. The machine heads on the two XY-axis sliding table modules move synchronously and are kept on the same vertical line, a laser transmitter and a laser receiver are fixedly installed at the bottom of the upper machine head, and a reflecting piece is fixedly installed at the top of the lower machine head. Laser emitted by the laser emitter is emitted to the upper surface of the glass to be refracted, then is emitted to the surface of the reflecting piece from the interior of the glass to be reflected back to the lower surface of the glass to be refracted, finally, the laser penetrates through the upper surface of the glass to be received by the laser receiver, and when an incidence point of the laser emitted to the surface of the glass has a scratch, the laser receiver cannot receive the laser.

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.