1157 results about "Optical materials" patented technology

The invention relates to the technical field of polymer synthesis, in particular to polyaryletherketone resin containing imide side groups and a preparation method of the polyaryletherketone resin. By introducing an imide structure into aryl diphenol containing amino, a plurality of polyaryletherketone resins containing imide side groups are designed and synthesized, and are used for meeting various application requirements, such as high-performance materials, electronic materials, optical materials and the like; meanwhile, the performance of the polyaryletherketone material is also improved, so that the polyaryletherketone material is more suitable for various application environments.

The invention discloses a cockpit visual work efficiency evaluation method. The method comprises the following steps: establishing a cockpit geometric model according to a real cockpit; establishing a cockpit light environment model according to the cockpit light environment parameters; establishing a cockpit optical material model according to the optical material parameters of the inner and outer surfaces of the cockpit; fusing and establishing a cockpit optical model; a simulation detector is arranged on the cockpit optical model; according to the cockpit optical model and the analog detector, human eye vision optical simulation and dazzle source space tracking and positioning are carried out; according to a glare source space tracking and positioning result, a cockpit structure is optimized; and performing cockpit visual work efficiency evaluation according to a cockpit structure optimization result. According to the cockpit visual work efficiency evaluation method, reasonable evaluation of cockpit visual work efficiency readable visibility in various environments is achieved, simulation is conducted on the cockpit light environment through computer software, and adjustment can be conducted according to the working habit, the vision condition, the age and other factors of each pilot.

The invention relates to the field of optical material defect detection, and discloses a PC lens defect classification and identification method and system, and the method comprises the following steps: asynchronously collecting lens multi-modal data through polarized light imaging, thermal imaging and an acoustic emission sensor, and constructing a five-order asymmetric tensor containing polarization angle, spectrum, time, space and defect features; performing dynamic dimension reduction on the tensor by using an improved Tucker decomposition method, and extracting a core tensor and a factor matrix; establishing a polarization angle-time correlation coding model based on inverse problem solution of a light field state equation, deducing defect distribution characteristics and optimizing a core tensor; mapping the optimized tensor to the QUBO Hamiltonian of a quantum annealing machine, and carrying out optimization solution; and finally, fusing the multi-mode confidence coefficients of polarized light, thermal imaging and acoustic emission signals, generating defect classification labels and inverting geometric and mechanical parameters of the defects. The lens flaw detection efficiency and the classification accuracy are remarkably improved, and the method is suitable for industrial-grade high-precision quality control scenes.

The invention belongs to the technical field of optical materials, and discloses a holographic polymer dispersed liquid crystal composition, a holographic grating and a preparation method. The composition comprises the following components in parts by mass: 0.5-1.5 parts of a photoinitiator, 2-5 parts of a co-initiator, 15-20 parts of a first monomer, 15-20 parts of a second monomer, 10-15 parts of a third monomer, 10-15 parts of a solvent and 10-20 parts of mixed liquid crystal. Wherein the first monomer is a monofunctional acrylic monomer, the second monomer is a bifunctional acrylic monomer, the third monomer is a polyfunctional acrylic monomer, the mixed liquid crystal comprises 10-25 wt% of a monomer liquid crystal and 75-90 wt% of a nematic liquid crystal, and the monomer liquid crystal contains fluorine as a benzene ring substituent and contains cyano or isothiocyano as an end group. Through cooperation of the monomer liquid crystal and the nematic liquid crystal in the mixed liquid crystal and cooperation of fluorine atoms and cyano / isothiocyano groups in the monomer liquid crystal, the holographic grating prepared from the composition has the characteristics of low haze and high diffraction efficiency, and the grating can be thinner, so that the requirements of light weight and clearness of AR glasses can be met.

The invention relates to the technical field of additive manufacturing, and discloses an additive manufacturing lens surface optimization method based on real-time feedback control. The method comprises the following steps: firstly, acquiring eye biometric data and personalized visual demand parameters of a wearer, establishing a personalized optical model of eyeballs according to the eye biometric data and the personalized visual demand parameters, and deducing a retina defocusing amount distribution map; and determining spatial arrangement and geometric morphology parameters of the distributed out-of-focus microstructure layer on the lens according to the atlas. In the additive manufacturing process, the optical material is deposited and solidified layer by layer, and the three-dimensional shape information of the surface of the optical material is obtained in real time after deposition of each layer. And comparing and analyzing the morphology information with a theoretical model to generate a morphology deviation result. And then, a correction instruction of the printing parameters is calculated by using the correction model, and the printing parameters of the additive manufacturing equipment are adjusted in real time, so that real-time compensation and optimization of the morphology deviation are realized, and finally, a high-precision lens product meeting personalized optical design requirements is manufactured.

The invention relates to the technical field of optical protective materials, in particular to an anti-dazzle full-ultraviolet-proof optical protective material and a preparation method thereof.The anti-dazzle full-ultraviolet-proof optical protective material is formed by sequentially compounding a scratch-resistant hardened layer, a PET film layer a, a composite adhesive layer, a PET film layer b, an installation adhesive layer and a PET release film layer from top to bottom; the preparation method comprises the following steps: mixing organic silicon modified polyurethane acrylate, a pigment, a reactive diluent, a flatting agent, a photoinitiator, a solvent and modified nano silicon dioxide to prepare a photocurable scratch-resistant hardening coating liquid; in order to endow the optical material with excellent infrared barrier property and heat insulation property, cesium tungsten bronze is introduced into a composite adhesive layer as a filler, and in order to improve the adhesive power and water resistance of a composite adhesive solution, epoxy resin is taken as a base material, organic silicon modified polyurethane acrylate is introduced as a water-resistant component, acrylic acid is taken as tackifying resin, and a curing agent is taken as a curing agent. And bisphenol A ethoxylate dimethacrylate is used as a diluent.

An x-ray source includes an x-ray transmissive window having an x-ray transmittance greater than or equal to 20% for at least some x-rays having an x-ray energy less than 1 keV. The x-ray source further includes an electron source configured to generate at least one electron beam and an anode assembly configured to generate x-rays in response to electron bombardment by at least some of the electrons of the at least one electron beam from the electron source. The x-ray source further includes at least one x-ray optic is configured to receive at least some of the x-rays from the anode assembly and to direct at least some of the received x-rays to the window to form an x-ray beam.

The various embodiments described herein include a phase shifter that can have a first electrode that has a distributed shape. The phase shifter can include a second electrode. The phase shifter can include an optical waveguide between the first electrode and the second electrode. Further, the phase shifter can include an active electro-optical material that propagates light, and phase shifts the light.

Embodiments of the present disclosure include techniques for forming nanotextured surfaces on various materials. In certain embodiments, a nanotextured surface of a wafer is formed in a processing chamber, such as a semiconductor processing chamber. A flat surface opposite the nanotextured surface is attached to a flat surface of a bulk material. In some embodiments the bulk material and the wafer are optical materials. In some embodiments, a second surface of the bulk material is also attached to a wafer having a nanotextured surface and a light may pass through the first nanotextured surface, the bulk optical material, and the second nanotextured surface with low reflection.

The invention belongs to the technical field of optical materials, and particularly relates to an environment-friendly mercaptan optical resin material and a preparation method thereof. Comprising the following steps: (1) uniformly mixing a catalyst, a release agent and a polyisocyanate compound to prepare a mixture; (2) adding titanium dioxide nanoparticles with different particle sizes, which are modified by a polythiol compound and a sulfydryl silane coupling agent, into the mixture; and (3) heating and curing to prepare the environment-friendly mercaptan optical resin material. On the basis of small-particle-size titanium dioxide, a small amount of large-particle-size titanium dioxide is added. The large-particle-size titanium dioxide is not prone to agglomeration and good in dispersity, in the blending process, the granular large-particle-size titanium dioxide is easier to disperse, and agglomeration of small-particle-size titanium dioxide is prevented. Due to the addition of the small-particle-size titanium dioxide and the large-particle-size titanium dioxide, the mechanical strength of the mercaptan optical resin is further improved on the basis of maintaining the high refractive index of the mercaptan optical resin.

The invention belongs to the field of laser processing and numerical simulation, and particularly relates to a finite element modeling and analysis method for a nanosecond pulse laser target material. The method comprises the following steps: establishing and loading a laser heat source model; establishing a target material finite element model and carrying out grid division; establishing and solving a transient heat conduction equation; carrying out multi-cycle iterative solution and post-processing; and performing model verification and parameter analysis. According to the method, the laser heat source model is established, the adaptive grid encryption strategy for temperature gradient optimization is adopted, and the transient solution algorithm is combined, so that compared with a traditional simplified analysis model or general commercial software simulation, the prediction precision of the target material temperature field spatio-temporal evolution law under the nanosecond pulse laser effect is remarkably improved. The method can accurately predict the temperature distribution and evolution law of the target material under the action of laser, has the advantages of high modeling precision, good calculation efficiency, wide application range and the like, and is suitable for engineering applications such as laser processing and damage evaluation of optical materials and composite materials.

The invention relates to the technical field of optical materials and nano structures, in particular to an ultraviolet broadband light absorber based on graphene and a multi-layer periodic structure. The structure of the ultraviolet broadband light absorber sequentially comprises a graphene layer, a distributed Bragg reflection grating structure layer and a SiO2 substrate at the bottom from top to bottom. The preparation process of the ultraviolet broadband light absorber comprises the following steps: preparing the graphene layer; a SiO2 layer is deposited; depositing a TiO2 layer; carrying out multi-layer superposition; adding a graphene layer; and completing the device. The light absorption efficiency of graphene in the ultraviolet band is greatly improved, broadband efficient absorption within the wavelength range of 240-370 nm is achieved, the highest absorption rate can reach 99.75%, the absorber is not sensitive to polarization, the preparation process is simple, and technical support is provided for design of the efficient ultraviolet absorber.

The invention discloses a Mini LED package test method and test equipment. The method comprises the following steps: performing light irradiation on Mini LED package by using a reverse light path tracking technology to obtain an interference pattern and determine a function sensitive area; injecting a quantum dot fluorescent marker into the functional sensitive area to carry out multispectral dynamic monitoring; performing surface plasma resonance spectrum scanning on the functional sensitive area to obtain surface plasma resonance response data; performing an acoustic stimulation test on the functional sensitive area according to the obtained data to obtain acoustic response data; and performing a compensation test by using the nonlinear optical material layer to obtain performance attenuation prediction data. According to the technical scheme, accurate detection and performance prediction of the miniature optical structure in Mini LED packaging are achieved, and potential early failure symptoms can be effectively recognized.

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 relates to the technical field of infrared optical materials, and particularly discloses a large-size high-resistance infrared silicon single crystal and a preparation method thereof. The doping concentration of cobalt oxide in the large-size high-resistance infrared silicon single crystal is 10 ppm to 100 ppm, and the atomic concentration of phosphorus in the large-size high-resistance infrared silicon single crystal is 2 * 10 < 13 > / cm < 3 > to 6 * 10 < 13 > / cm < 3 >. The oxide of transition metal cobalt and phosphorus impurities are doped into the infrared silicon single crystal, carriers of cobalt and phosphorus and carriers of impurities such as boron and oxygen generate a recombination effect, so that the concentration of free carriers in the silicon single crystal is reduced, and the absorption coefficient of the doped silicon single crystal is relatively small; the infrared transmittance of the silicon single crystal in a medium wave band can be obviously increased, the resistivity can reach 600 omega.cm or above, and the use requirement of the infrared silicon single crystal in a high-performance infrared optical system can be met.

The present Specification is directed to devices for controlling the phase of a light signal in a surface waveguide of a planar-lightwave circuit by controlling a stress in the waveguide material. Phase controllers disclosed can impart stresses of opposite signs in a material such that a desired effect on the refractive index of an optical material can be accentuated. As a result, a greater change in the refractive index of the material can be realized in a phase controller that requires less chip real estate and / or at lower voltages. In some embodiments, a phase-control module includes a pair of complimentary stress-optic phase controllers, one having electrodes disposed on the top and bottom of a piezoelectric layer, while the other has electrodes disposed only on top of the piezoelectric layer. As a result, the phase controllers impart stress of opposite sign in the material beneath them.

An object of the present invention is to provide a polishing pad that uses a polyol different from conventionally used polyols such as PTMG as a high molecular weight polyol of an isocyanate-terminated urethane prepolymer that forms a polishing layer, a method for producing the polishing pad, and a method for polishing the surface of an optical material or a semiconductor material using the polishing pad.A polishing pad having a polishing layer comprising a polyurethane resin,wherein the polyurethane resin is a cured product of a curable resin composition comprising an isocyanate-terminated urethane prepolymer and a curing agent, and the isocyanate-terminated urethane prepolymer is a reaction product of a polyol component and a polyisocyanate component, andthe polyol component comprises a polyol having a carbonate group in a molecule.

A raw material composition for preparing a modified polyurethane optical material belongs to the technical field of optical material chemistry, and comprises the following components: 45-55 parts by weight of polyisocyanate; 35 to 45 parts by weight of tris (2-mercaptoethylthio) methane as shown in a formula I; and 25 to 40 parts by weight of 1, 3-bis (thiophenyl)-2-propyl acrylate. The modified polyurethane optical material obtained by polymerization reaction of the composition has high transmittance and refractive index and good mechanical properties, and is suitable for optical components with high requirements on refractive index. .

The invention discloses a polyurethane blue light protection optical material and a preparation method thereof. The polyurethane blue light protection optical material is formed by polymerizing a three-component system of isocyanate, a thiopropane trithiol compound and a light absorber mixture, has the advantages of high refractive index and high light transmittance, also has excellent blue light selective protection capability, can perform accurate regulation and control protection on blue light with different wavelengths of 385-500nm, and has good application prospects. The refractive index of an optical lens made of the blue-light-resistant material is larger than or equal to 1.71, the transmittance of short-wave blue light of 385-445 nm is smaller than or equal to 32.2%, the transmittance of long-wave blue light of 475-500 nm is larger than or equal to 70%, the transmittance of visible light of 600-780 nm is larger than or equal to 90%, and a wider material selection range is provided for application of high-end blue-light-resistant optical components.

The invention relates to the technical field of preparation of infrared optical materials, in particular to large-size highly-homogenized infrared chalcogenide glass as well as a preparation method and application thereof. The raw materials are purified by adopting a low-temperature reduction method or a low-temperature solid fractionation method, so that impurity residues in the raw materials are effectively reduced, and the precision requirement of the large-size infrared chalcogenide glass is met; a supercooling atmosphere standing curing method is adopted for cooling curing, so that the condition that the infrared chalcogenide glass has stripe or crack defects is avoided, and the quality of the glass blank is improved; and the internal thermal stress of the glass material is eliminated through a process of combining two times of annealing with a special mold, and the optical uniformity and the permeability of the infrared chalcogenide glass are improved. According to the technical scheme, the problems that in the existing large-size infrared chalcogenide glass preparation process, the raw material purification effect is poor, many residues exist, stripes and cracks are prone to occurring in the synthesis process, and then the optical uniformity and the internal quality of the infrared chalcogenide glass are affected are effectively solved.

A substrate configured for an electro-optic device and an electro-optic device formed using the substrate are described. The substrate includes a semiconductor substrate, an insulating layer, and at least one thin film optical material. The semiconductor substrate includes a trap-rich layer and an underlying substrate layer. The insulating layer is on the semiconductor substrate, The trap-rich layer is between the underlying substrate layer and the insulating layer. The thin film optical material(s) have an electro-optic effect and are on the insulating layer.

The invention belongs to the technical field of optical anti-counterfeiting, and relates to an optical anti-counterfeiting GaN metasurface and an optical anti-counterfeiting product. The optical anti-counterfeiting metasurface comprises a substrate layer and a light reflection structure, the light reflection structure is arranged on the surface of one side of the substrate layer and is used for reflecting incident light so as to output emergent light of which the wavelength continuously changes within a set angle range; the light reflection structure comprises a plurality of first reflection cylinders, the first reflection cylinders are arranged on the surface of one side of the substrate layer in an array mode, and a groove is formed between every two adjacent first reflection cylinders. By adopting the optical anti-counterfeiting GaN metasurface provided by the scheme, 10nm-level narrow-band wavelength selection can be performed on incident light, emergent light with extremely high saturation color can be observed in any direction in the plane where the metasurface is located based on human vision under the condition of sunlight irradiation, and the color of the emergent light continuously changes along with the observation angle, so that the color of the emergent light is changed continuously. Therefore, the optical anti-counterfeiting function is achieved, special optical materials are not needed, cost is low, and the structure is simple.

The invention discloses an optical neural network non-linear activation system, method and device, and relates to the technical field of optical neural networks, because a magneto-optical material is integrated in a phase adjustment waveguide arm of a non-linear activation unit, a controller can adjust the current activation function type and weight of the optical neural network according to the current activation function type and weight of the optical neural network. And controlling a magneto-optical material of the phase adjustment waveguide arm to generate a magneto-optical effect so as to perform phase adjustment on an optical signal transmitted through the phase adjustment waveguide arm, so that the nonlinear activation unit can adapt to the type and weight of a current activation function, and perform corresponding nonlinear calculation on a target input signal to obtain a target input signal. Dynamic switching of various nonlinear activation functions is realized, and the flexibility of the optical neural network is improved.

An achromatic imaging optic (20) is used to image an output field (16a) along a beam path (23) of the imaging optic (20) into a target field (14) for use in DUV microlithography. The imaging optic (20) has a plurality of lenses (L1 to L13), each containing less than 5% lead oxide. At least one of the lenses (L5, L7, L9) is made of a high-dispersion optical material with an Abbe number less than 50. At least one of the lenses (L1 to L4, L6, L8, L10 to L13) is made of a low-dispersion optical material with an Abbe number greater than 50. This results in an imaging optic with simplified manufacturing. Depending on the design, the imaging optics can be part of an optical system of a projection exposure system as an illumination lens (20) or as a projection lens.

Systems and methods are provided for waveguides structures with meta-optical structures for routing light between layers. An example method for manufacturing a waveguide structure with meta-optical structures for routing light may include fabricating a plurality of waveguide layers and adding one or more points of redirection where redirection of a light beam may occur. The points of redirection may be added by generating divots and adding meta-optical structures. The points of redirection may be interconnected via a high index optical material to efficiently route light between different waveguide layers and components. The points of redirection may also be configured to split or combine different polarizations of the light beam.

The design method comprises the steps that the size of the polishing disc is designed according to the vertex curvature radius R, the aspheric surface coefficient K and the caliber D of a to-be-polished surface of a product, iron blocks used for a grip on a clamp and an iron block used for the polishing disc are designed, the hole position of the grip and the hole position and the size of a polishing solution adding hole are determined, and the polishing disc is arranged on the polishing disc. The method comprises the following steps of: carrying out analogue simulation through software, confirming that the tool is available, cleaning a polishing disc put back into production, and then pouring an asphalt disc to ensure that the asphalt disc completely covers a working surface of the tool, does not overflow and is provided with a polishing solution hole site, so that the design for the spherical polishing tool provided by the invention needs to be manufactured according to the specific size and curvature of a product; according to the efficient spherical polishing tool, the three holes are punched in the back face, the polishing disc is more convenient to take, polishing liquid is more convenient to add, the machining tool can be flexibly adjusted according to optical materials needing to be machined through the design method of the efficient spherical polishing tool for the polishing disc, and therefore it is guaranteed that the machining precision of the materials is high.

The present invention addresses the problem of providing: a composition and a polymer compound which are each capable of suppressing aggregation of a dye that has a nonlinear optical effect in a nonlinear optical material, and exhibiting a higher electro-optic effect with respect to the absorbance after poling; a nonlinear optical element which is obtained using the composition; and an optical modulator which comprises the nonlinear optical element and operates on the basis of an electro-optic effect. The present invention pertains to a composition which contains a compound represented by formula (1) and a compound represented by formula (3), wherein the content of the compound represented by formula (3) is 0.0001 mol% to 25 mol% inclusive relative to the total content of the compound represented by formula (1) and the compound represented by formula (3).　(Definitions of groups are as set forth in the description.)

The invention provides a device and a method for measuring a refractive index curve of an optical material based on frequency domain interference. The method comprises the following steps: S1, collecting three groups of interference signals; s2, acquiring an interference signal of the rotary optical material sample; s3, performing spectrum correction on the interference signal obtained in the S1; s4, performing spectrum correction on the interference signal obtained in the S2; and S5, carrying out digital filtering on the frequency domain signal in the step S4, solving phase data of the quartz glass by utilizing Hilbert transform after inverse fast Fourier transform, and unrolling the whole phase data according to columns to obtain a phase difference under the wavelength. S6, constructing a physical equation between the optical thickness variation and the phase variation; and S7, substituting the data obtained in S4 and S5 into the equation established in S6, and calculating to obtain the refractive index n (k) of the optical material sample. The method provided by the invention can be used for high-precision nondestructive measurement of the dispersion of the optical material.

The invention provides an infrared target simulator focusing collimation projection optical system and a design method thereof. The optical system is composed of a telescope objective, an intermediate field lens and a relay lens group. A source target and a background image generated by the infrared target simulator are input into the DMD and then are incident to the focusing collimation projection optical system through the DMD, the incident light firstly passes through the relay lens group and the intermediate field lens to generate a primary image of the image on the DMD, and then the primary image surface is collimated and projected to an entrance pupil of a tested photoelectric device through the telescope objective. According to the invention, optical material parameters are finely analyzed and matched, three infrared optical materials are adopted to form a lens group, a field lens is added to compress the aperture of a light beam, and only five lenses are used, so that achromatism and athermalization are realized while high transmittance is ensured. And a focusing lens group and a precise mechanical structure are arranged in the relay lens group, so that the target simulation requirement of photoelectric detection equipment such as a guide head at a wider working temperature range is met, and meanwhile, the requirement of obtaining a clear simulation target scene by matching detected photoelectric equipment with different working distances can be met.

The invention belongs to the technical field of anti-counterfeiting optical materials and application thereof, and particularly relates to a double-ligand modified and water stimulus responsive perovskite fiber membrane as well as a preparation method and application thereof. The preparation method comprises the following steps: firstly dissolving metal halide salt BX2 and AX powder in a polar solvent to form a perovskite ABX3 precursor solution, then adding a cyclodextrin cyclic supramolecule and long-chain fatty amine double-ligand system into the obtained precursor solution, and then fully mixing the obtained mixed solution with a high-molecular polymer solution to prepare a spinning solution suitable for electrostatic spinning. And finally, preparing the large-area reversible intelligent fluorescent fiber membrane with the water stimulus response through an electrostatic spinning technology. The water stimulus response intelligent fluorescent fiber membrane based on the perovskite nanocrystals can be applied to the anti-counterfeiting field, such as single information encryption, dual information encryption, anti-counterfeiting labels and high-resolution anti-counterfeiting, is especially suitable for anti-counterfeiting in an underwater environment, and has a wide application prospect.