880 results about "Optical transmittance" patented technology

The invention provides an intelligent detection method for surface defects of a protective film based on machine vision, which comprises the following steps of: extracting stress concentration areas and touch signal attenuation characteristics from potential risks of touch response delay, and performing grouping analysis on the stress concentration areas and the touch signal attenuation characteristics, the combined attenuation trend of the optical transmittance and the touch signal attenuation is obtained; the deformation degree of the stress concentration area is recognized, the touch signal attenuation degree of the folding area is determined according to the combined attenuation trend of the optical transmittance and touch signal attenuation, and the durability of the folding screen is obtained through evaluation; and extracting early warning indexes about the screen curvature radius and the light scattering intensity defect from the attenuation trend prediction result, and generating a complete report containing the optical transmittance and the touch signal attenuation defect.

The invention discloses a high-refractive-index nano-composite optical adhesive and a preparation method thereof, and belongs to the technical field of optical transparent adhesives. The optical adhesive is prepared by taking a polyurethane acrylate oligomer with a specific structure as matrix resin, introducing surface-modified barium titanate and zirconium oxide core-shell nanoparticles as a functional filler, and matching with an active diluent, a photoinitiator and a silane coupling agent in a specific proportion. Through the design of the core-shell structure, the core problems that the high-refractive-index nanoparticles are easy to agglomerate in an organic resin matrix, the dispersion stability is poor and the bonding force with a matrix interface is weak are effectively solved. The prepared optical adhesive has a refractive index of more than 1.65, a light transmittance of more than 99% and a haze of less than 0.3% after being cured, has excellent bonding strength, weather resistance and long-term use stability, and is especially suitable for precise lamination of high-end display devices (such as OLEDs (Organic Light Emitting Diodes) and micro-lens arrays).

The invention relates to the technical field of PET optical films, and particularly discloses a high-light-transmittance blue-light-resistant PET optical film and a preparation method thereof, and the high-light-transmittance blue-light-resistant PET optical film is prepared from the following raw materials by weight: 70-85% of a polyethylene glycol terephthalate resin matrix; 3%-8% of a benzotriazole anti-blue light agent; 5%-12% of a silicon dioxide nano anti-reflection agent; 2%-6% of nano zinc oxide or nano cerium oxide; 1.5% to 4% of a polycarbodiimide cross-linking agent; 0.5%-3% of an anti-blocking agent; 0.4%-1.5% of an antioxidant; 0.4%-1.0% of an ultraviolet light absorber; the balance is a processing aid; the preparation method comprises the following steps: S1, pretreating the raw materials; s2, a mixing procedure; and S3, extruding and coating. The PET optical film provided by the invention has high optical properties of high light transmittance, blue light resistance and low haze, and has the advantages of high light transmittance and blue light blocking rate of the optical film and improvement of the application range of the optical film.

The invention discloses double-sided coated glass. The double-sided coated glass comprises a glass substrate, a first coating layer and a second coating layer, the first coating layer is arranged on the front surface of the glass substrate and sequentially comprises an anti-reflection layer, an ultraviolet reflection layer and a middle and far infrared reflection layer from the glass substrate to the outside; the second coating layer is arranged on the back surface of the glass substrate and sequentially comprises a near-infrared reflecting layer and a near-infrared regulation and control layer from the glass substrate to the outside, and the near-infrared regulation and control layer is used for regulating and controlling the reflectivity of the near-infrared reflecting layer. According to the design of the front anti-reflection layer of the double-sided coated glass, through continuous transition of the particle size and the refractive index of nanoparticles, the visible light reflectivity is remarkably reduced, and the light transmittance of the glass is kept to be 85% or above and is superior to that of existing composite coated glass; meanwhile, through the synergistic effect of the ultraviolet reflecting layer, the middle and far infrared reflecting layer and the back near-infrared reflecting layer, the ultraviolet blocking rate can be larger than or equal to 99%, the comprehensive infrared blocking rate can be larger than or equal to 90%, and the technical problem that light transmission and blocking performance of traditional glass are difficult to consider at the same time is solved.

The invention discloses a color-permeable colorful ceramic and a preparation process thereof, and belongs to the technical field of ceramic preparation processes, a transparent AlON ceramic body is formed by low-temperature diffusion bonding sintering, an adjustable structural color of 480-630 nm is realized through TiO2 / ZrO2 nanocrystalline spacing (180-220 nm), a Sm2O3 chemical color is superposed, delta E is less than or equal to 0.5, and the color is changed along with the angle and does not fade; after decoration firing of a finished product, embossment line patterns can be engraved inside and outside the ceramic body through femtosecond laser, due to the fact that the main body of the ceramic body is high in light transmittance, when light directly irradiates or enters the interior from the top as a bottle, halo of the embossment line patterns engraved inside and outside can be scattered on the surface, and the overall optical effect is improved; the ceramic is suitable for high-grade decorative ceramics such as bottles and ornaments.

The invention relates to the technical field of optical cement, in particular to high-temperature-resistant acrylic optical cement with high light transmittance and a preparation method of the high-temperature-resistant acrylic optical cement. The preparation method of the high-light-transmittance high-temperature-resistant acrylic optical adhesive comprises the following steps: (1) under the protection of inert gas, mixing an acrylate monomer, a carboxyl-containing monomer, an epoxy-containing monomer, a hydroxyl-containing monomer, a photoinitiator and modified inorganic nanoparticles, and stirring at 60-90 DEG C and 200-600rpm for 3-8 hours to obtain an adhesive solution; and (2) carrying out vacuum curing on the glue solution at 50-80 DEG C for 5-15 minutes to form a glue material, pressing the glue material into a film, and cooling to obtain the optical cement. The prepared high-temperature-resistant acrylic optical adhesive with high light transmittance has good light transmittance, high-temperature resistance and good peel strength, the light transmittance of the optical adhesive is larger than 90%, the heat-resistant temperature is larger than 150 DEG C, the peel strength is larger than 14 N / 25 mm, and the peel strength after high-temperature treatment is larger than 11.8 N / 25 mm.

The invention relates to the technical field of optical materials, and discloses organic silicon micropowder as well as a preparation method and application thereof. The organic silicon micro powder is composed of a plurality of polysiloxane microspheres, the surface relative smoothness of each polysiloxane microsphere is R, 1.02 < = R < = 1.30, R = Rq / Ra, Rq is the root mean square surface roughness of the polysiloxane microspheres, and Ra is the average surface roughness of the polysiloxane microspheres; the relative size uniformity of the organic silicon micro-powder is RSU, RSU = 1-phi / d2 > = 0.992, phi is the variance of the diameter of the organic silicon micro-powder, and d is the average diameter of the organic silicon micro-powder. The organic silicon micropowder has the advantages of higher light utilization rate, higher light transmittance and good light scattering and diffusion uniformity; after the material is applied to a light diffusion material, the light control fineness is high, the light transmittance and diffusivity are good, and the light transmittance and brightness are higher; and the flatness of the coating formed when the coating is used as a raw material for forming the coating is good.

The invention provides a clothing 3D virtual fabric texture dynamic simulation method and device, equipment and a medium, and the method comprises the steps: obtaining multi-layer fabric data, carrying out the mathematical modeling of the microstructure features and macroscopic physical attributes of the multi-layer fabric data, and obtaining a hierarchical material model; calculating vertex displacement data and interlayer contact pressure of the fabric data of each layer in the dynamic deformation process through a physical engine, and generating vertex coordinates and deformation gradient data after deformation; constructing a dynamic light transmittance field according to the deformation gradient data and the hierarchical material model, and generating a light transfer matrix representing an interlayer light attenuation relationship through a ray tracing algorithm; performing dynamic displacement compensation on the UV coordinates based on the deformed vertex coordinates and the light transfer matrix to generate a corrected UV coordinate set; and inputting the dynamic light transmittance field and the corrected UV coordinate set into a rendering pipeline, performing multi-channel optical characteristic fusion calculation, and outputting virtual rendering data. By adopting the method, the authenticity of dynamic simulation of the multi-layer fabric can be improved.

The application discloses a cross-linked ETFE composite film with gradient ultraviolet shielding function and a preparation method and application thereof, and belongs to the technical field of ETFE film preparation. The cross-linked ETFE composite film is composed of three layers of a surface layer, a middle layer and a bottom layer. The surface layer material comprises ETFE resin and fluorinated carbon quantum dots; the middle layer material comprises ETFE resin, allyl-containing comonomer A and phenyl-containing comonomer B; and the bottom layer material comprises ETFE resin and CeO2 nanowires. The fluorinated carbon quantum dots have a particle size of 3-5 nm and contain a -C4F9 structure. The comonomer A is an allyl-containing fluorine olefin monomer, and the comonomer B is a phenyl-containing organic fluorinated compound. Through the synergistic effect of the surface layer self-migration fluorinated carbon quantum dots, the middle layer copolymerization modification and the bottom layer CeO2 nanowires, high light transmittance, full-waveband ultraviolet shielding and long-term weather resistance are achieved.

A housing (185) for an electronic device (170) includes an optical film (100) having an optical transmittance for substantially normally incident light having a band edge separating first and second wavelength ranges, where the first wavelength range extends from about 400 nm to about 700 nm and the second wavelength range is at least about 100 nm wide and disposed between about 800 nm and about 1100 nm. For substantially normally incident light, an average optical reflectance of the optical film is greater than about 90% in the first wavelength range, and an average optical transmittance of the optical film is greater than about 80% in the second wavelength range. For at least one frequency in a range of about 0.1 GHz to about 90 GHz and for substantially normally incident radiation, the optical film transmits at least about 95% of the incident radiation.

The invention relates to the technical field of hyperspectral image reconstruction, and discloses a frequency separation and physical perception attention hyperspectral image reconstruction method and system, and the method comprises the steps: obtaining a compressed snapshot observation image, carrying out the inverse dispersion operation, and restoring the image into an initial three-dimensional signal; inputting the initial three-dimensional signal into a physical perception mask attention U-Net reconstruction network, and outputting a reconstructed hyperspectral image: performing high and low frequency separation guidance on the reconstructed hyperspectral image, and respectively inputting extracted high frequency and low frequency features into a selective multi-head space attention module, inputting the obtained high-frequency attention feature map and the obtained low-frequency attention feature map into a mask attention module, and generating a dynamic weight map of a high-fidelity region according to the physical light transmittance of a modulation mask and a position code; mask enhancement is carried out on the high-frequency features, moderate modulation is carried out on the low-frequency features, and a fusion feature map is obtained through fusion; and performing residual connection and inverse dispersion alignment operation and then outputting.

The invention is applicable to the technical field of cover plate glass manufacturing, and provides a preparation method of cover plate glass with anti-dazzle, anti-reflection, antifouling and scratch-proof functions, which comprises the following steps: pretreatment of a base material: cleaning and drying the surface of the glass base material to remove oil stains and impurities; preparing an anti-dazzle film: forming the anti-dazzle film on the surface of the pretreated glass substrate; an antireflection film is deposited, specifically, the antireflection film is deposited on the side, away from the base material, of the anti-dazzle film through coating equipment, the antireflection film is composed of a SiO2 layer and an H14La2O7Ti layer, and the H14La2O7Ti layer is located between the SiO2 layer and the subsequent anti-fingerprint film; preparing an anti-fingerprint film: depositing the anti-fingerprint film on one side, far away from the anti-glare film, of the antireflection film, and curing to obtain the cover plate glass with anti-glare, anti-reflection, antifouling and anti-scratch functions. According to the invention, the wear resistance is obviously improved; the light transmittance and the optical performance are stable and controllable; the anti-dazzle function and the anti-smudginess function are coordinated and stable; production adaptability and cost control advantages are realized; the prepared cover plate glass has excellent environmental adaptability.

The invention relates to the technical field of protective film preparation, and particularly discloses an antistatic silica gel protective film and a preparation method thereof.The protective film comprises a base material layer and an antistatic coating coated on the surface of the base material layer; the base material layer is prepared from methyl vinyl silicone rubber, modified fumed silica, a compound antistatic agent A and a vulcanizing agent, and the antistatic coating is prepared from a compound antistatic agent B and water-based acrylic resin. The preparation method comprises the following steps: banburying, calendering and vulcanizing a compound antistatic agent A, methyl vinyl silicone rubber and modified fumed silica to form the base material layer; and finally, mixing the compound antistatic agent B with water-based acrylic resin to prepare an antistatic coating solution, coating the surface of the base material layer with the antistatic coating solution, and drying and curing to obtain a finished product. The silica gel protective film prepared by the invention has excellent antistatic property, mechanical property, adhesive force and high light transmittance, and is suitable for the fields of electronic equipment screens, optical lenses and the like.

The invention provides an erosion gully erosion volume measuring device, and relates to the technical field of water and soil loss monitoring equipment.The erosion gully erosion volume measuring device comprises a three-dimensional laser scanner, an installation flange is fixedly installed at the lower end of the three-dimensional laser scanner, a controller and an installation disc are fixedly installed at the upper end of the three-dimensional laser scanner, and first inner grooves are symmetrically formed in the side wall of the installation disc; a rotating drum is rotatably mounted in the two first inner grooves, circular grooves are uniformly formed in the upper end of the rotating drum at equal intervals, a first spring is fixedly mounted in each circular groove, a clamping block is fixedly mounted at the upper end of each first spring, and each clamping block is slidably mounted in the corresponding circular groove; a first window, a second window, a third window and a fourth window are evenly installed in the rotating drum at equal intervals, the four types of windows cover the typical environment of erosion gully measurement by 90% or above, the laser light transmittance in any scene is ensured, point cloud noise, data cavities or precision deviation caused by environment interference are reduced from the source, and the measurement accuracy is improved. And the reliability of measurement results is ensured.

The invention discloses multifunctional vehicle-mounted dimming glass and an intelligent regulation and control system thereof, and belongs to the field of new-generation information technology industries, and the multifunctional vehicle-mounted dimming glass is formed by compounding a first protective layer, a photovoltaic power generation layer, a thermal barrier and temperature control module, a dimming module, a transparent display layer, a starry sky top layer, a space expansion layer and a second protective layer, according to the system, based on the optical detection technology of the photoelectric sensing module, the system can accurately collect the intensity of light emitted by the light source in real time, the intensity of the light is finely compared with a preset strong light threshold value, and whether current light reaches the dazzling strong light standard or not is accurately judged through the rigorous comparison and analysis process; once dazzling strong light is judged, the control panel immediately starts an intelligent regulation and control mechanism, the light transmittance of the vehicle-mounted dimming glass is accurately and dynamically controlled according to the light intensity and a preset algorithm, and therefore it is guaranteed that a driver has a clear and interference-free view in all directions.

The invention discloses an environment-friendly odorless sealing strip adhesive as well as preparation and application thereof, and the environment-friendly odorless sealing strip adhesive is prepared from the following components in parts by mass: 15 to 20 parts of polyacrylate resin, 10 to 15 parts of dammar resin, 5 to 10 parts of fir resin, 3 to 5 parts of hydrogenated terpene resin, 2 to 5 parts of tributyl citrate and 45 to 65 parts of n-decane. The preparation method comprises the following steps: uniformly mixing natural resin (dammar resin, fir resin and hydrogenated terpene resin), polymeric monomers (n-octyl acrylate, methyl methacrylate and hydroxyethyl acrylate) and an environment-friendly solvent (n-decane), and then polymerizing to obtain the environment-friendly adhesive. The synthetic resin (polyacrylate resin) and the natural resin are sufficiently and mutually dissolved in n-decane to form stable and uniform composite resin glue, so that the problems of health risk and environmental pollution caused by harmful solvents such as xylene in the traditional sealing glue are effectively avoided, and the characteristics of no toxicity, no odor and environmental protection of the product are realized; meanwhile, the stability and the bonding performance of the section sealing glue are improved, the matching performance of the optical transmittance and the refractive index of the section sealing glue is enhanced, and the section sealing glue has quick-drying performance and is suitable for medical pathological sections.

The invention discloses optical-grade PMMA (polymethyl methacrylate) and a continuous polymerization process method and application thereof, the continuous polymerization process method comprises a pre-polymerization stage, a body continuous polymerization stage, a four-stage vacuum devolatilization stage and a melt extrusion stage, through special design of temperature programs and the like in the technological process, the prepared PMMA can reach the optical grade, and the optical-grade PMMA can be used for preparing the optical-grade PMMA. The method has the advantages of high light transmittance, narrow molecular weight distribution, and realization of large-scale industrial production.

The invention relates to the technical field of lens detection, and discloses a mold pressing lens detection device and method, and the method comprises the steps: S1, prefabricating a lens substrate, carrying out the interface strengthening treatment and deep hypothermia stabilization of the lens substrate, and carrying out the on-axis rotation coating, and generating a coated lens; s2, performing three-dimensional light field scanning detection on the coated lens to obtain a film thickness distribution diagram and a light transmittance gradient field of the coated lens, and generating compensation parameters; and S3, prefabricating a space ring metal framework, setting a mold pressing condition of an integrated forming mold according to the compensation parameters, and carrying out mold pressing on the glass melt in a nitrogen environment according to the mold pressing condition to form an uncoated lens group which is integrally formed with the space ring metal framework. According to the detection equipment and method for the mould pressing lens, the film thickness error during film coating is avoided, the light energy transmission efficiency of different areas is balanced, the large difference between the lens assembled by the uncoated lens group and the lens assembled by the coated lens is also avoided, and the homogenization of the produced lens is ensured.

The invention discloses an optical paste film and a preparation method thereof, and relates to the technical field of optical functional materials. The optical slurry film is prepared by taking a polyethylene glycol terephthalate film as a base material and coating an optical slurry coating, the optical slurry coating is prepared from the following raw materials in parts by weight: 12 to 16 parts of nano silicon dioxide, 22 to 28 parts of acetone and butanone mixed solvent, 7 to 9 parts of modified titanium dioxide, 4 to 6 parts of nano zirconium oxide, 30 to 35 parts of modified epoxy resin, 18 to 22 parts of butyl acrylate, 4 to 6 parts of dioctyl sebacate, 2.5 to 3.5 parts of silane coupling agent KH-570, 1 to 1.5 parts of organic silicon flatting agent and 0.6 to 1 part of organic silicon defoaming agent. 1.2-1.8 parts of an antioxidant 1010, 3-4 parts of a photoinitiator 184 and 6-8 parts of bis (4-tert-butylphenyl) iodine hexafluorophosphate; the polyethylene glycol terephthalate film pretreatment material comprises absolute ethyl alcohol and deionized water. The raw materials are scientifically proportioned, the titanium dioxide and the epoxy resin are clearly modified, the preparation process is complete, and the finished product is high in light transmittance, good in weather resistance, adaptive to the requirements of the optical field and high in practicability.

The invention discloses a high-performance anti-dazzle coating as well as a preparation method and application thereof. The core technology of the coating is to form a uniform film with a micro-nano composite structure on the surface of a base material through a self-assembly film forming process by utilizing nano quartz powder with specific particle size distribution. The coating has excellent optical performance, the light transmittance reaches up to 92% or above, and the haze is strictly controlled to be 5% or below. The unique microstructure can effectively scatter strong incident light (such as sunlight and vehicle lamps), significantly reduce dazzling glare, and maintain high definition of the base material and high reflective (or self-luminous) visibility of the identification itself, so that an observer can clearly and comfortably identify target information. The method is simple in process, controllable in cost, environment-friendly and particularly suitable for the fields of traffic safety, public facility identification, display screen protection and the like.

The application discloses melamine resin / nano-silica composite microspheres, a preparation method thereof, and a light diffuser and optical material, and relates to the technical field of organic-inorganic composite materials. The method uses branched nano-silica and large-particle-size spherical nano-silica as a balling aid, and utilizes melamine and formaldehyde to polymerize in an aqueous phase to prepare the composite microspheres, without using a dispersant or an alcohol organic solvent. The obtained microspheres have a rough surface morphology similar to a litchi shell, and exhibit excellent high-haze and high-transmittance performance when used as the light diffuser. The preparation method is simple, low in cost, suitable for industrial production, and can be widely used in the fields of LED lighting and liquid crystal display.

The invention discloses a pupil adaptive red light regulation and control method and system based on EC film and light source collaboration, and the method comprises the steps: obtaining a visible light image of the eyes of a user through an image collection module, and extracting a real-time pupil state parameter through an image processing module; meanwhile, the ambient light sensing module obtains ambient light intensity data. The cooperative control unit receives the parameters and generates a luminous flux control instruction set containing a first control instruction and a second control instruction based on a safety evaluation model. The first control instruction drives the electrochromic film assembly to change the light transmittance of the red light, and the second control instruction adjusts the luminous intensity of the red light source. Through cooperative control of optical attenuation of the electrochromic film and luminous intensity of the light source, the luminous flux entering the retina can be accurately regulated and controlled in real time according to dynamic changes of pupils, the problem of potential retina light damage risk caused by using a light source with fixed intensity is effectively solved, and the safety of red light irradiation application is remarkably improved.

The invention belongs to the technical field of protective films, and particularly relates to a bending-resistant high-light-transmittance protective film for a folding screen and a preparation process of the bending-resistant high-light-transmittance protective film. The bending-resistant high-light-transmittance protective film sequentially comprises a release layer, an OCA optical adhesive layer, a flexible base material layer A, a flexible base material layer B, a silica gel layer and a protective layer from top to bottom, wherein raw materials of the flexible base material layer A and the flexible base material layer B both contain organic and inorganic hybrid particles, and the content of the organic and inorganic hybrid particles in the raw materials of the flexible base material layer A is larger than that of the organic and inorganic hybrid particles in the raw materials of the flexible base material layer B. The bending-resistant high-light-transmittance protective film for the folding screen is excellent in bending resistance, especially low-temperature bending resistance, light transmittance and hardness.

The invention discloses an optical adhesive with high light transmittance and high peel strength and a preparation method thereof. According to the method adopted by the invention, an alicyclic structure is introduced into a prepolymer (polyurethane acrylate high polymer), so that the viscosity of the optical adhesive is reduced, the movement of free radicals of a photoinitiator is facilitated, and the curing rate of the optical adhesive is improved. According to the method adopted by the invention, the molecular weight and distribution of the prepolymer are controlled through RAFT polymerization, and block copolymerization of urethane acrylate and monomers containing benzene rings and allyl ester is formed, so that soft and hard segments in the prepolymer (urethane acrylate high polymer) are reasonably distributed, and the mechanical property of the optical adhesive is improved; and the block copolymerization degree of the prepolymer (polyurethane acrylate high polymer) is improved.

Appearance detection equipment for optical lens production relates to the technical field of optical lens detection and comprises a rack, a PLC is installed on the side face of the rack, a detection table is rotationally connected to a base of the rack through a rotating shaft, and a driving mechanism for driving the rotating shaft to rotate is installed on the base of the rack. Placing grooves are uniformly formed in the detection table, a receiving source and a light transmittance measuring instrument are installed at the positions, corresponding to the placing grooves, of the rack, the receiving source and the light transmittance measuring instrument are correspondingly arranged up and down, a position adjusting mechanism is installed at the top of the rack, and an optical lens taking and placing unit is installed on the adjusting part of the position adjusting mechanism; according to the appearance detection equipment for optical lens production, feeding and discharging of optical lenses are convenient, the trouble of manual operation is avoided, time and labor are saved, and therefore the detection efficiency is improved.

Glasses are disclosed which can be used to produce substrates for flat panel display devices. The glasses may be substantially alkali free. The glasses are doped with one or more transition metals (e.g., Ni, Co) and exhibit reduced optical transmittance to suppress light leakage from the display device and / or to improve contrast. The display device may be a bottom emission display device or a top emission display device. The display device may be a tiled display device. Glasses disclosed herein may be used, for example, as a baseplate having a plurality of display substrates disposed thereon, a display substrate (e.g., backplane) having a plurality of light emitters disposed thereon, a glass cover plate, or combinations thereof.

The present application relates to the technical field of optical functional film, disclose a kind of high haze calcite BOPET composite diffusion film and its preparation method and application, by adopting gradient micropore-dense layer composite structure design, and optimizing each layer function composition, on the one hand in surface dense layer, utilize low filling nano calcite to build high dense structure, effectively reduce surface light reflection, improve mechanical strength, while avoiding light transmittance loss;On the other hand in bottom microporous layer, introduce double-particle-size calcite particle nanoparticles and microparticles, build multiscale scattering network, realize the efficient light diffusion of wide spectral range 380-780 nm, significantly reduce interface scattering loss, substantially improve the light transmittance and haze balance of optical film;Meanwhile, through the integration of co-extrusion-biaxial stretching process, optimize inorganic / organic interface combination, effectively solve the problem of filler agglomeration, while reducing the preparation cost.

The invention belongs to the technical field of modified plastics, and particularly relates to a high-reflection low-transmittance polypropylene composite material as well as a preparation method and application thereof. The invention provides a novel polypropylene composite material formula, which comprises homo-polypropylene, precipitated barium sulphate, hollow glass beads, maleic anhydride grafted polypropylene and a hyperbranched polymer dispersant, through selection and synergistic effect of the specific components, the reflectivity of the obtained polypropylene composite material is significantly improved, the light transmittance is greatly reduced, and the polypropylene composite material has a good application prospect. Good mechanical properties and high-whiteness surface appearance are kept, and the high-whiteness optical fiber can be widely applied to the field of various optical products.

The present disclosure provides optical glass, a method for preparing same and use thereof. The method includes the steps of: (1) weighing raw materials, and mixing them uniformly, the optical glass includes, in terms of the mass percentage of oxides: 40-50% La2O3, 15-25% Nb2O5, 10-20% Gd2O3, 5-10% GeO2, 5-10% B2O3, 1-6% TiO2, and 0.1-1% K2O; and (2) melting a mixed batch to obtain molten glass, and then introducing a gas into the molten glass for atmosphere bubbling, wherein the gas includes an inert gas and a reducing gas; the inert gas has a specific gravity greater than that of air at the same temperature and gas pressure; and the reducing gas makes the molten glass have a redox index of −120 to −5; after stopping the bubbling, homogenizing the molten glass to be clarified with stirring. The technical problem to be solved is how to provide a method for preparing optical glass that allows the obtained optical glass to have not only a high refractive index but also a high light transmittance in a visible light region, thereby facilitating promotion and use.