163results about How to "Good optical performance" patented technology

This application discloses an imaging device with an operating temperature range of -40℃ to +60℃, comprising a 4K high-definition lens and a detector for receiving images captured by the 4K high-definition lens. The 4K high-definition lens has a focal length of 50mm, a relative aperture of 1.25, and operates in dual bands: 0.43~0.656μm and 0.7~1μm. The detector has a pixel count of 3840×2160 and a pixel size of 2.9μm. The 4K high-definition lens employs a heat-free design using domestically produced spherical glass, resulting in a simple, compact structure and small size. It utilizes a high-dispersion material lens and a low-dispersion material glass bonded together to achieve dispersion matching. The combination of different lenses and the rational allocation of optical power ensure excellent optical performance. Furthermore, it is suitable for imaging in high-brightness daytime and low-light nighttime environments and can switch bands for imaging, ensuring clear images both day and night.

The invention discloses a simulation method and device of an AR optical system, a medium and electronic equipment, and the method comprises the steps: obtaining an initial source file, converting the initial source file into a target file based on a Kogelnik coupling wave theory and a preset volume holographic grating structure requirement, and importing the target file into ZEMAX; acquiring a corresponding luminous source according to preset parameters of the display; obtaining an initial collimation component, converting the initial collimation component into a target collimation component, and importing the target collimation component into the ZEMAX; in a non-sequence mode of ZEMAX, calling a target file, generating a volume holographic grating, and obtaining a holographic waveguide assembly; and connecting the light emitting source, the target collimation assembly, the holographic waveguide assembly and a preset detector to obtain the target AR optical system. Compared with the prior art, simulation of the holographic waveguide assembly and simulation of the integrity of the AR optical system can be achieved, the simulation efficiency is improved, the systematicness, integrity and quality of simulation are improved, and then the optical performance of the optical system in AR equipment is improved.

The utility model relates to the technical field of retroreflective sheeting provides an environmental protection type hard PVC retroreflective sheet, solves the problem that the reflectivity of existing retroreflective sheet is low, and the optical performance is relatively weak, and the surface layer anti -peeling impact force is not good, including the retroreflective sheet body, the retroreflective sheet body includes the protective surface layer, prism air microcapsule layer, degradable back film layer from top to bottom sequentially laminated, the prism air microcapsule layer includes wall material and core material, the core material includes prism reflection matrix layer and air layer, the protective surface layer is by PVC material layer and acrylic material layer composite, the prism reflection matrix layer is by several microangle pyramid prism structure unit close arrangement, the microangle pyramid prism structure unit is cutting obtains to cubic angle pyramid prism.

The invention provides an imaging lens which is small in size and maintains good optical performance and an imaging device provided with the imaging lens. The imaging lens includes, in order from an object side to an image side, a first lens group, an aperture, and a second lens group. The second lens group includes two or more lenses satisfying the following conditional expression, where f is the focal length of the imaging lens in a state in which the imaging lens is focused on an infinite object, and Rf is the radius of curvature of the object-side surface of the lens included in the imaging lens. -15 < f / Rf <-0.5

The utility model provides a kind of functional film, belong to functional film technical field.The utility model's functional film includes base material layer and the closed cavity inlay in the base material layer.The utility model's functional film only includes a layer of base material layer, more light and thin, optical absorption is lower, heat transfer performance is better;And relative to laminated structure, there is no interface mismatch risk, low in cost, there is no laminated interface, avoid delamination caused by moisture penetration under high temperature and high humidity environment, higher environmental aging resistance, and need not laminating.The utility model's functional film in solar cell field, can improve the structural stability of heat dissipation and packaging, improve the power generation efficiency of solar module, long-term working life and environmental tolerance, in display field, its light and thin, flexible and non-heterogeneous characteristics make it have good application space in precision optical device.

The present application provides a kind of imaging lens of internal focusing mode with small structure and good optical performance and camera device with the imaging lens. The imaging lens includes a first lens group with positive refractive power, a second lens group with positive refractive power and a third lens group in sequence from object side to image side. During focusing, only the second lens group moves. The second lens group includes at least four lenses. The imaging lens satisfies a predetermined condition.

The invention relates to perovskite quantum dot glass powder and a preparation method thereof, the chemical formula of the glass powder is CsPb (Ax B1-x) 3, A and B are one or more of Cl, Br or I, x is more than or equal to 0 and less than or equal to 1, and the total molar amount of the components is 100 mol%. According to the perovskite quantum dot glass powder, the fluorescence wavelength can be adjusted through component change, the preparation method is simple and low in toxicity, and the perovskite quantum dot glass powder has high stability and does not need an annealing process. The method can be widely applied to the fields of display devices, lighting equipment, photovoltaic devices, photoelectric sensors and the like.

The problem is to realize a small, bright imaging lens and a camera device with stable optical performance. The solution is that the imaging lens of the camera device (1) has: a negative first lens (L1), a positive second lens (L2) with a concave-convex shape, an aperture stop (SP), a positive third lens (L3), and a positive combined lens composed of a positive fourth lens (L4) and a negative fifth lens (L5), and satisfies specific formulas related to the second and third lenses (L2, L3).

The application provides a method for separating optical isomers of single-walled carbon nanotubes. The method comprises: mixing a single-walled carbon nanotube raw material, a conjugated polymer and an organic medium to form a mixed system, wherein the organic medium comprises a chiral organic component; performing dispersion treatment on the mixed system to make the conjugated polymer selectively wrap and disperse target chiral and optical configuration single-walled carbon nanotubes under the participation of the organic component, and form a dispersion system; and performing post-treatment on the dispersion system. By adding the chiral organic component, the chiral recognition process and the polymer wrapping process are simultaneously performed, the different optical isomers of the carbon nanotubes can be differentially selected, higher-level fine separation is realized, the separation from chiral species is further improved to the separation of optical isomers, and the intrinsic structure and excellent optical performance of the carbon nanotubes can be well maintained without covalent modification of the carbon nanotubes.

The present application provides a polyvinyl acetal resin having a specific surface area of 0.1000 to 1.4000 m 2 / g, an apparent specific gravity of 0.200 to 0.350 g / cm 3 , and a D50 particle size of 75.0 to 187.5 μm. The polyvinyl acetal resin of the present application can be applied to various purposes, such as an interlayer film for laminated glass, a paint, or an adhesive. The subsequent product made from the polyvinyl acetal resin of the present application has excellent optical properties, such as low yellowness, high penetration, and high brightness, and the subsequent product made from the polyvinyl acetal resin of the present application still has the aforementioned good optical properties after the polyvinyl acetal resin is left to stand at room temperature for 48 hours, which means that the polyvinyl acetal resin also has excellent stability.

This invention provides a zoom lens with anti-vibration properties, which facilitates miniaturization and weight reduction while maintaining good optical performance, and a camera device equipped with the zoom lens. The zoom lens, from the object side towards the image side, sequentially comprises a first lens group with positive refractive power, a second lens group with negative refractive power, an intermediate group with positive refractive power, and a subsequent group with negative refractive power. The first lens group moves during zooming. The second lens group, from the object side towards the image side, sequentially includes a front group of the second lens group that remains stationary during image shake correction and an anti-vibration group with negative refractive power that moves during image shake correction. The zoom lens satisfies a predetermined conditional expression.

The application discloses a weather-resistant hydrophobic antireflection and antifogging film and a preparation method thereof, relates to the technical field of films, and the weather-resistant hydrophobic antireflection and antifogging film comprises a bottom layer, an intermediate layer, a top layer and a modifier layer; the bottom layer, the intermediate layer and the top layer are prepared by coating bottom layer coating sol, intermediate layer coating sol and top layer coating sol on a glass substrate in sequence and solidifying; the bottom layer coating sol, the intermediate layer coating sol and the top layer coating sol all comprise tetraethyl orthosilicate, anhydrous ethanol, water, hydrochloric acid and a template agent; and the modifier is prepared by mixing a nano cerium oxide emulsion and a substrate material emulsion. The antireflection and antifogging film provided by the application not only has excellent transmittance, but also has excellent hydrophobicity and weather resistance.

The utility model relates to a machine vision and industrial detection technology, in particular to a rapid focusing industrial lens structure, an industrial lens, a control system and an industrial vision detection device, wherein the rapid focusing industrial lens structure adopts an electrowetting liquid lens to realize millisecond-level automatic focusing. A fast focusing industrial lens structure is composed of eight glass lenses and an electric control liquid lens, and the nominal value of the optical focal length is 35 mm. Within the object distance range of 225-600mm, the liquid lens realizes millisecond-level automatic focusing by adjusting the curvature of a liquid interface, and the optical back focal length and the mechanical back focal length are kept unchanged. Through actual measurement, the absolute value of lens distortion is less than or equal to 2%, the curvature of field is less than or equal to + / -0.2 mm, the full-field relative illumination is greater than or equal to 95%, and the high-resolution imaging requirements of industrial vision, automatic detection and robot precise positioning scenes can be met.

The invention discloses a force-induced discoloration elastic material based on a holographic photocuring technology and a preparation method. The force-induced discoloration elastic material comprises the following components in percentage by mass: 48%-90% of a polymer matrix, 0.3%-4% of a photo-initiation system and 6%-50% of a recording component, the polymer matrix comprises the following components in percentage by mass: 73%-89% of an acrylate monomer, 10%-25% of a thiol monomer and 0.5%-3% of a catalyst; the photo-initiation system comprises a photosensitizer and a co-initiator, and the dosages of the photosensitizer and the co-initiator respectively account for 0.05%-1% and 0.2%-3% of the total mass of the mechanochromic elastic material; the recording component comprises the following components in percentage by mass: 62%-85% of first fluorine-containing acrylate, 10%-35% of second fluorine-containing acrylate and 0-6% of a cross-linking agent. The mechanochromic elastic material has excellent mechanical properties and optical properties, can provide an important material basis for a new generation of intelligent flexible optical devices, and has a wide application prospect.

This utility model relates to the field of liquid lens technology, specifically an adjustable focusing lens based on a liquid lens, including a lens mount and a liquid lens module. One end of the lens mount has a docking groove, and the liquid lens module rests against the docking groove. One end of the lens mount has a positioning groove, and the liquid lens module has a positioning box that rests against the positioning groove. The positioning box has an electrode connector, and the positioning groove has an interface. An annular inclined groove is formed on the outer ring of the liquid lens module. The lens mount has a fastening box, and a threaded hole is formed between the top of the fastening box and the docking groove. A fastening groove is formed between the inside of the fastening box and the threaded hole. The threaded post and conical head allow the operator to complete the stable installation or quick disassembly of the liquid lens module simply by rotating the threaded post, without the need for additional tools, greatly improving maintenance convenience.

The application relates to the field of high polymer material and film processing technology, in particular to a forming and processing technology of a biaxially stretched polymer film; the technology comprises the steps of inorganic particle surface modification, esterification, polycondensation, melt extrusion casting and biaxial stretching and winding; the technology combines specific monomer copolymerization to provide main chain rigidity and steric hindrance, and cooperates with multifunctional crosslinking monomers to build a slightly long branched and micro-crosslinked structure in the system; the core is to introduce an end group reaction agent and a macromolecular antioxidant to close the polar end group to inhibit degradation, and to combine the surface modified nanoparticles with the monomer containing a sulfonate group to form a polar ion aggregate in the amorphous region; the application overcomes the defects that the traditional process lacks a main chain rigidity cooperative design and an end group closing mechanism, causes a significant increase in thermal shrinkage and a decrease in dielectric performance in a high temperature and high frequency scene, improves the thermal dimensional stability of the material, and improves the dielectric breakdown strength and the surface metal layer adhesion.

The application discloses a nickel-coupled hybrid nanometer carbon core-shell structure cocatalyst, a preparation method and application thereof, and comprises the following steps: preparing a nickel salt N,N-dimethylformamide (DMF) solution (one); fully mixing ethylenediaminetetraacetic acid (EDTA), hybrid nanometer carbon (HC), trimethylamine and DMF to obtain a solution (two); fully mixing the solution (one) and the solution (two) to obtain a precursor of nickel (Ni) coupled with HC, and then centrifuging, washing, drying and heat treating by using a microwave tube furnace to obtain the Ni coupled with HC core-shell structure cocatalyst; the preparation method is simple, the non-noble metal Ni is compounded with the HC, and the cost is low; the prepared cocatalyst has a compact core-shell heterojunction interface, a high photo-generated carrier separation efficiency and a large number of hydrogen evolution active sites; after being compounded with graphite phase carbon nitride, the photocatalytic hydrogen production activity of the nickel cocatalyst coupled with the HC is significantly improved as compared with the nickel cocatalyst not coupled with the HC.

The utility model discloses a kind of ultraviolet light curing devices, including shell, curing chamber is equipped in the shell, and curing chamber bottom is equipped with the load plate of load and drive workpiece to rotate uniform light, and load plate electrically connected with the driving motor installed in shell, curing chamber is installed with partition cover, and partition cover is sleeved in load plate outside.This ultraviolet light curing device, first, the rotation design of device through load plate, workpiece can be received ultraviolet light in curing process all-round evenly, ensure the consistency of curing quality, avoid the curing defect caused by uneven illumination, to improve curing efficiency and product quality;In addition, the optimization layout of UV light mechanism and the setting of reflector, further improve the illumination intensity and uniformity, shorten curing time, improve production efficiency.

The invention discloses a high-hardness anti-fog UV (ultraviolet) curing protective film and a preparation process, and belongs to the technical field of inorganic nano materials, the high-hardness anti-fog UV curing protective film comprises a base material layer and a high-hardness anti-fog UV curing layer arranged on the upper end surface, and is characterized in that the high-hardness anti-fog UV curing layer comprises the following components in parts by weight: 30-50 parts of organic resin oligomer, 10-20 parts of organic solvent, 10-20 parts of solvent, 1-5 parts of antioxidant, 1-5 parts of coupling agent and 1-5 parts of coupling agent. 10-30 parts of inorganic nanoparticles, 5-15 parts of an anti-fogging agent, 1-5 parts of a photoinitiator, 10-20 parts of a reactive diluent, 0.1-2 parts of a leveling agent, 0.1-2 parts of a defoaming agent and 0.1-1 part of a stabilizer, and the coating has the beneficial effects that the inorganic nanoparticles are uniformly introduced into a single-layer coating, so that the hardness and scratch resistance of the coating are remarkably improved; the hardness of the coating can reach 3H-5H, the scratch resistance is excellent, no obvious scratches exist on the surface, and the problem that a traditional single-layer protective film is difficult to give consideration to both high hardness and flexibility is effectively solved.

This invention discloses a fluorinated polyimide containing phenyl anthracene and its preparation method, belonging to the field of polymer materials technology. The fluorinated polyimide containing phenyl anthracene has the following molecular structure: by introducing asymmetric phenyl anthracene structural units with trifluoromethyl side groups, flexible ether bonds, and twisted non-coplanar structures into the polymer backbone, this polyimide possesses excellent comprehensive properties, such as superior solubility, heat resistance, optical properties, mechanical properties, crystallinity, dielectric properties, and hydrophobicity.

This application relates to the field of two-dimensional semiconductor material preparation technology, specifically to a method for preparing monolayer molybdenum disulfide by dual-sulfur source chemical vapor deposition, comprising the following steps: Step 1, providing a chemical vapor deposition reaction chamber having an upstream region, a growth region, and a downstream region; Step 2, arranging a molybdenum-containing precursor in the growth region, and arranging a substrate above or opposite to the molybdenum-containing precursor; Step 3, arranging a first sulfur-containing precursor in the upstream region and a second sulfur-containing precursor in the downstream region; Step 4, introducing a carrier gas into the reaction chamber and heating it to cause the first sulfur-containing precursor, the second sulfur-containing precursor, and the molybdenum-containing precursor to volatilize and undergo a chemical vapor deposition reaction on the substrate surface to form a monolayer molybdenum disulfide. This invention employs a dual-sulfur source strategy, achieving large-size, uniform, and low-defect preparation of monolayer MoS2, facilitating widespread application.

The application provides a perovskite crystalline silicon laminated cell and a preparation method and application thereof, and relates to the technical field of solar cells.The perovskite crystalline silicon laminated cell comprises a perovskite top cell, an intermediate interconnection layer and a crystalline silicon bottom cell, and the intermediate interconnection layer is prepared by embedding an Ag metal grid on the surface of a TCO base, and then depositing a TCO layer on the TCO base with the embedded Ag metal grid to form an integrated structure in which the TCO base wraps the Ag metal grid, thereby obtaining the intermediate interconnection layer.The Ag metal grid embedded in the TCO composite layer as the interconnection layer of the laminated cell can enhance the adhesion of the interconnection layer, guarantee the stability and reliability of the cell structure, and the overall structure of the intermediate interconnection layer is also helpful to reduce the electrical loss and enhance the optical performance.

This invention discloses a high-strength passive daytime radiation cooling film and its preparation method, belonging to the field of functional polymer materials and thermal management technology. The film has a bilayer composite structure, including an upper reflective layer and a lower emitting layer. This invention employs an integrated process of melt blending-lamination-biaxial stretching-induced phase separation-extraction pore-fixing. Through a process design of stretching followed by extraction and a hierarchical biaxial stretching strategy, it achieves highly oriented molecular chains to enhance mechanical properties while precisely constructing a multi-level structure with both nanopores and micropores. The resulting film exhibits an average reflectivity >93% in the solar radiation band (0.25–2.5 μm), an average emissivity >95% in the atmospheric window (8–14 μm), a thermal conductivity <0.1 W / (m·K), and a tensile strength >30 MPa. This invention solves the technical bottleneck of achieving high reflectivity, high emissivity, low thermal conductivity, and high strength simultaneously in radiation cooling materials, and can be widely applied in building energy conservation, outdoor equipment thermal management, and electronic device heat dissipation.

The invention discloses a preparation method of a high-transmittance radiation refrigeration film, which comprises the following steps: mixing a transparent resin matrix with a diluted monomer solution, adding an ultraviolet light absorber, a surface additive and a photoinitiator, and carrying out ultrasonic dispersion to obtain a coating liquid; the surface of a transparent polymer base material is coated with the coating liquid, and the coating liquid is irradiated and cured by 365nm ultraviolet light to form the radiation refrigeration film. The visible light transmittance of the obtained film is larger than or equal to 92%, the ultraviolet rejection rate is larger than or equal to 99%, the infrared emissivity in the atmosphere window wave band is larger than or equal to 0.90, and cooling can be effectively achieved through radiation heat dissipation. The surface of the film is hydrophobic, the water contact angle is larger than 90 degrees, and the film has potential self-cleaning maintaining capacity. The method is simple in process, can be quickly cured at room temperature, is suitable for large-area continuous production, and has the advantages of low cost and high industrialization potential.

This utility model discloses a rigid reflector and a direct-lit backlight module. The rigid reflector includes: a reflector formed by injection molding; the reflector includes a reflector body and multiple reflective cups, which are arranged in a matrix on the reflector body; the end face of the reflector body facing away from the multiple reflective cups is a planar structure, and a fixing structure for fixing a back plate is provided on the periphery of the reflector body. The direct-lit backlight module includes: a back plate, a lamp plate, optical elements, and the aforementioned rigid reflector. The lamp plate includes a substrate and multiple LEDs, which are arranged in a matrix on the substrate. The back plate, substrate, reflector, and optical elements are stacked sequentially, and the LEDs are located at the opening of the reflector; the planar structure is fixedly connected to the substrate, and the inner sidewall of the back plate is fixedly connected to the fixing structure. This utility model can improve the problem of reflector warping during assembly and has the characteristics of efficient assembly, making the direct-lit backlight module have the characteristics of high assembly efficiency and good optical effect.

The utility model relates to a coating mechanism technical field, concretely relates to a kind of self-compensating micro gravure roll mechanism for OCA coating, including base, the base top symmetrical fixedly connected with connecting plate, the connecting plate inside is separately provided with main roll and auxiliary roll, the main roll side is provided with self-compensating mechanism, wherein:the self-compensating mechanism includes first threaded rod, the first threaded rod outside is connected with slider in screw thread, the slider inside is provided with fixed block, the fixed block inside is rotatably connected with rotating rod, self-compensating mechanism can automatically adjust the contact state between doctor blade and main roll, ensure that always can scrape off redundant glue solution, make the even and moderate glue solution in main roll hole for coating, to guarantee the stability and uniformity of coating amount, reduce the frequency of component replacement due to wear, reduce the maintenance cost and downtime of equipment, improve production efficiency and automation degree simultaneously.

The present invention relates to a polyamide-imide-based film, a method for preparing the same, and a window cover plate and a display device comprising the same. A polyamide-imide-based film which contains a polyamide-imide-based polymer that does not contain fluorine atoms and has a modulus of 5 GPa or more based on a film thickness of 50 [mu] m, thereby having excellent optical properties, mechanical properties, and ultraviolet blocking rate.

The invention relates to the technical field of plastics, in particular to an ultrathin micro-texture mobile phone rear cover plate and a preparation method thereof. The method comprises the following steps: carrying out end group regulation on polyhexamethylene adipamide resin through hexamethylene diamine, and carrying out melt blending on the polyhexamethylene adipamide resin, tetraethyl orthosilicate and hydroxyl-terminated polydimethylsiloxane through a sol-gel reaction to obtain hybrid inorganic powder; hydroxyl-terminated polydimethylsiloxane and hexamethylene diisocyanate are sequentially added by adopting a step-by-step feeding strategy for modification. And then molding in a mold with micro textures through an injection molding-compression molding process, and carrying out limited annealing treatment. According to the invention, the problems of incomplete micro-texture copying, easy scratching and poor thermal dimensional stability of the ultrathin plate are effectively solved, and high-precision texture transfer, excellent surface scratch resistance and long-term flatness of the plate with the thickness of 320-380 microns are realized.

The utility model provides a kind of engineering machinery LED spotlight, including rear shell, the lamp panel assembly with several LED lamps, front frame and optical assembly;The lamp panel assembly is arranged in rear shell interior and is connected with rear shell;The optical assembly includes face shield, face shield is provided with equal optical lens component with the number of LED lamp, face shield and optical lens component are integrated structure;The face shield is connected with rear shell, and each optical lens component cover is equipped with corresponding LED lamp, and the light emitted by LED lamp is emitted through optical lens component and face shield;The front frame is connected with rear shell and accommodates lamp panel assembly and optical assembly in rear shell interior.The utility model engineering machinery LED spotlight can solve the problem that the structure stability is poor and the sealing property is poor caused by the separation structure of face shield and optical lens, to improve the optical performance and lighting effect of LED spotlight.In addition, engineering machinery LED spotlight can adapt to different plug use, to improve practicality and versatility.

The invention discloses an internally-added non-silicon release master batch, a preparation method and a release film with nanoscale roughness, preparation raw materials comprise PET resin I, a non-silicon release agent composition and an antioxidant, and the non-silicon release agent composition comprises polyester wax and oxidized polyethlene wax. According to the invention, polyester wax and oxidized polyethlene wax are compounded, and a release functional phase which is uniformly dispersed in nanoscale and has a stable interface is constructed in a PET matrix through a unique molecular synergistic effect and a processing technology matched with the polyester wax and the oxidized polyethlene wax, so that the fundamental contradiction that the surface of an internally added release film is rough and the release function is difficult to consider at the same time is solved; and meanwhile, silicon migration pollution is fundamentally eradicated, the process is simplified by utilizing an internal addition process, and recycling is facilitated.