369 results about "Optical materials" patented technology

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.

An optical device is described. The optical device includes a waveguide, a first engineered electrode, and a second engineered electrode. The waveguide includes at optical material(s) having an electro-optic effect. The optical material(s) include lithium. A portion of the waveguide has a waveguide width. The first engineered electrode includes a first channel region and first extensions protruding from the first channel region. The first extensions are closer to the portion of the waveguide than the first channel region is. The second engineered electrode includes a second channel region and second extensions protruding from the second channel region. The second extensions are closer to the portion of the waveguide than the second channel region is. A first extension of the first extensions is a distance from a second extension of the second \extensions. The distance is less than the waveguide width.

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.

According to the silicon carbide / diamond multi-layer composite film and the preparation method thereof, a polycrystalline silicon carbide matrix in the multi-layer composite film is a bottom layer, and the multi-layer composite film has high strength, high rigidity, high heat conductivity and oxidation resistance; the components of the gradient SiC-C transition layer gradually change from pure SiC to rich C-SiC and then to diamond-like carbon, and the gradient SiC-C transition layer is used for slowly releasing thermal stress and enhancing binding force; the nanocrystalline diamond is used as the top layer and has high hardness, low friction coefficient, particle scouring resistance and high infrared transmittance; the silicon carbide / diamond multi-layer composite film is obtained through a chemical vapor deposition method, the process is mature, and the silicon carbide / diamond multi-layer composite film has good heat conduction performance and infrared transmittance and is suitable for infrared guidance systems with extremely severe working environments, such as optical materials of fairings, optical windows and the like.

The invention relates to the technical field of polymer optical materials, in particular to an optical-grade polymethyl methacrylate material and a preparation method thereof, and the optical-grade polymethyl methacrylate material comprises the following raw materials in parts by weight: 95-105 parts of methyl methacrylate, 200-240 parts of a composite liquid medium, 1.5-2.5 parts of a composite additive and 0.08-0.12 part of an initiator. According to the invention, the composite additive is used as a main material and the composite liquid medium is used as an auxiliary material, so that the heat resistance and the size stability of the material are synergistically improved, powder in the composite additive is uniformly dispersed in a methyl methacrylate matrix to form a compact physical support skeleton, and the powder is matched with a treating agent and a methyl methacrylate molecular chain to form strong chemical bond combination; the composite liquid medium optimizes the flowability of a polymerization system, reduces polymerization internal stress residues, avoids material deformation caused by internal stress release at high temperature, and enhances high-temperature stability.

This micro-LED module comprises: a unit substrate; a plurality of micro-LED chips mounted on the upper surface of the unit substrate; a protection film for covering the upper surface of the unit substrate and the plurality of micro-LED chips; a black film provided on the upper surface of the protection film; and an optical material provided on the upper surface of the black film, wherein the micro-LED module, having a transparent polymer material, includes the optical material including the transparent polymer material on the upper surface of the black film, and the polymer material has a high refractive index or at least a predetermined thickness, and thus a bright line can be improved even if a gap is formed at boundaries between a plurality of micro LED modules.

The application discloses an optical neural network nonlinear activation system, method and device, relates to the technical field of optical neural networks, and because a magneto-optical material is integrated in a phase adjustment waveguide arm of a nonlinear activation unit, a controller can control the magneto-optical material of the phase adjustment waveguide arm to generate a magneto-optical effect according to a current activation function type and weights of the optical neural network, so as to perform phase adjustment on an optical signal transmitted through the phase adjustment waveguide arm, and make the nonlinear activation unit adapt to the current activation function type and the weights, perform corresponding nonlinear calculation on a target input signal, and realize dynamic switching of multiple nonlinear activation functions, thereby improving the flexibility of the optical neural network.

The application discloses an anti-ultraviolet aging polycarbonate modified material and application thereof, and belongs to the technical field of polymer material modification. The material comprises synergistically modified polycarbonate, an organic small-molecule functional regulator, an antioxidant, a light stabilizer, a lubricating dispersant and an inorganic filler, wherein the synergistically modified polycarbonate is constructed into a multiple synergistic network by introducing a borate dynamic covalent structure, a Schiff base structure and a rare earth coordination structure, and the organic small-molecule functional regulator is p-hydroxybenzophenone. The preparation method comprises preparation of the synergistically modified polycarbonate and a subsequent melt blending and extrusion process. Through the technical scheme, the synergistic effect of ultraviolet absorption, energy transfer and free radical inhibition is realized, the yellowing degree of the material is significantly reduced, the mechanical property retention rate and the optical stability are improved, and the material is suitable for the fields of automobile transparent parts, outdoor optical materials and electronic and electrical shell.

The application belongs to the technical field of automobile intelligent display and polymer optical material, and relates to a front windshield anti-reflection film for automobile AR-HUD and a preparation method thereof. The anti-reflection film comprises modified optical acrylic resin, 9,9-bis(4-hydroxyphenyl) fluorene, nano-silica sol, ultraviolet absorber, light stabilizer and leveling agent. The modified optical acrylic resin is modified by introducing o-diphenol structural unit, aryl boronic acid structural unit, beta-cyclodextrin structural unit and adamantane structural unit into the acrylate base structure to form a dynamic borate ester bond and a host-guest inclusion synergistic topological network structure through free radical copolymerization. The anti-reflection film significantly improves the reflection efficiency of the target wave band of AR-HUD while maintaining high visible light transmittance, and exhibits excellent optical stability and double image control ability in a humid heat environment, and is suitable for the field of optical functional film of automobile front windshield.

The application belongs to the technical field of optical materials, and particularly discloses a synthesis method of core-shell quantum dots based on surface activation, which comprises the following steps: S1, preparing a quantum dot core; S2, degassing reaction is carried out on zinc precursor, octadecene and oleylamine in proportion, then the quantum dot core obtained in S1 is injected, a metal alkyl compound is added, and the temperature is increased to 230-250 DEG C; S3, the shell precursor is injected for 3-4 times, the temperature is increased at the same time, the inner shell is grown, zinc stearate and TOP-S are injected again, the ZnS shell is grown, and the InP core-shell quantum dots with regular morphology are obtained. The synthesis method of core-shell quantum dots based on surface activation is adopted, the quantum dots with controllable morphology and size distribution are obtained, the method is suitable for industrial production, and has wide applicability.

The invention belongs to the technical field of nonlinear optical crystals, and particularly relates to a zeolite-like structure nitrogen oxide silicate nonlinear optical crystal and a preparation method and application thereof, the chemical general formula of the crystal is Ba3Si3N5OCl, the crystal belongs to a hexagonal system, the cell parameters of the crystal are as follows: a is 9.5147 (6), c is 5.5002 (4), V is 431.22 (6) 3, Z is 2, the space group is P-62c, and the crystal has a non-centrosymmetric structure. The Ba3Si3N5OCl crystal provided by the invention is used as a novel zeolite-like structure nitrogen oxide silicate, successfully integrates nonlinear optical activity and phase matching capability, can generate frequency doubling response which is about 0.2 times of KDP (potassium dihydrogen phosphate) under 1064 nm laser pumping, and can realize phase matching, so that the Ba3Si3N5OCl crystal becomes a nonlinear optical material with practical device application potential.

The utility model provides a display panel and a display device, and belongs to the technical field of reflective display, the display panel comprises a plurality of pixel regions, each pixel region comprises a plurality of sub-pixel structures, each sub-pixel structure comprises a first substrate, a second substrate and an optical material, the first substrate and the second substrate are oppositely arranged, and the optical material is located between the first substrate and the second substrate. The first substrate comprises a first electrode pattern, the second substrate comprises a second electrode pattern, and the first electrode pattern and the second electrode pattern are at least partially overlapped; the optical material is configured to reflect light or allow the light to pass through under the action of an electric field formed between the first electrode pattern and the second electrode pattern, and the optical materials in different sub-pixel structures in one pixel region are configured to reflect light of different colors; the first structure is arranged on one side, close to the display surface of the display panel, of the pixel area and is configured to adjust the brightness of light reflected by the optical material in the pixel area; and the second structure is configured to adjust the electric fields of different areas in the sub-pixel structure.

A method to form a light wave-guide optical element is disclosed. First, a flat organic optical layer is formed on an optically transparent substrate before using a template to transfer a pattern onto the flat organic optical layer to obtain a patterned organic optical layer. Then the patterned organic optical layer is cured in the presence of the template to obtain an organic optical material disposed on the optically transparent substrate before removing the template from the organic optical material. Later an anti-reflection stack is formed to conformally cover the organic optical material before applying an organic optical cover layer on the anti-reflection stack to cover the anti-reflection stack.

This invention belongs to the field of UV-curable optical materials technology, specifically relating to a UV transfer optical adhesive, its preparation method, and its applications. The UV transfer optical adhesive comprises the following components in parts by weight: 25-45 parts of inorganic nano-modified polyurethane acrylate oligomer, 20-40 parts of silicone-modified acrylate oligomer, 25-50 parts of high-transparency acrylate monomer, 5-15 parts of easy-to-release UV-curable resin, 2-5 parts of photoinitiator, 0.2-1 part of leveling agent, and 0.2-1 part of defoamer. This invention solves the problems of poor release properties, high curing shrinkage, poor precision in replicating microstructures, and insufficient resistance to damp heat and yellowing in existing UV transfer adhesives, meeting the stringent requirements of UV optical adhesives in high-end fields such as optical brightening films, automotive displays, and new energy optical devices.

The application discloses a high-resolution oblique-axis optical lens, comprising, from the object side to the image side, a first lens, a second lens, a third lens, a fourth lens, a diaphragm, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens, a protective glass and an image sensor; the first lens is a filter; the second lens is a biconvex spherical lens with positive focal power; the third lens is a spherical lens with negative focal power; the fourth lens is a spherical lens with positive focal power; and the fifth lens is a biconcave spherical lens with negative focal power. The technical scheme balances and corrects optical aberrations of all levels by reasonably distributing the focal power of the lenses, reasonably matching the optical materials and shapes, and utilizes the cylindrical lens to correct astigmatism caused by the optical path of the meridian arc vector plane of the protective glass, so that the advantages of large target surface, low distortion, ultra-short object distance, high resolving power and the like of the lens are achieved.

The application discloses a kind of preparation device and preparation method of disc type crystal echo wall cavity, belong to optical material processing technical field.The device includes processing tool, the upper surface of processing tool is provided with recess for processing crystal echo wall sample, the curvature radius of groove bottom is slightly smaller than the radius of crystal echo wall sample, for grinding and polishing processing of crystal echo wall cavity, crystal echo wall sample has completed milling and grinding molding;Grinding, polishing crystal echo wall sample to be placed in the recess of processing tool, the top of crystal echo wall cavity sample is vertically provided with sample fixing rod for fixing itself, the bottom of processing tool is connected with coaxial motor through transmission shaft;Crystal echo wall cavity is finely ground, rough polished and fine polished using processing tool, to realize the processing of crystal echo wall cavity.It is convenient to use, and the application range of material is large, which can significantly reduce the preparation cost and shorten the preparation period.

The present invention provides a novel composite polymer material with excellent mechanical properties, a method for producing the composite polymer material, and an optical material containing the composite polymer material. The composite polymer material of the present invention contains a crosslinked polymer formed by crosslinking a silicone-based polymer S having a polysiloxane backbone as a main chain with a polymer P having a backbone other than a polysiloxane backbone as a main chain, wherein host-guest interaction based on a host group and a guest group is formed between the silicone-based polymer S and the polymer P, and the host group is a monovalent group formed by removing one hydrogen atom or one hydroxy group from a cyclodextrin or a cyclodextrin derivative.

The invention provides a non-reciprocal terahertz device. The non-reciprocal terahertz device comprises a first waveguide; the second waveguide is suitable for outputting the terahertz wave from the first waveguide; the at least three third waveguides are used for coupling the terahertz waves from the first waveguides to the second waveguides; the composite structure is positioned in each third waveguide and comprises a substrate; the first grating is suitable for converting the terahertz wave from the first waveguide from a linear polarization state to a circular polarization state rotating along a first direction; the magneto-optical material layer allows the circular polarization state terahertz waves rotating in the first direction to pass through under the action of an external magnetic field and blocks the circular polarization state terahertz waves rotating in the second direction to pass through; and the second grating is suitable for converting the terahertz wave passing through the magneto-optical material layer from a circular polarization state rotating along the first direction to a linear polarization state, transmitting the terahertz wave in the linear polarization state to the second waveguide, and converting the reflected terahertz wave from the linear polarization state to a circular polarization state rotating along the second direction.

The invention discloses a digital differential interference imaging method, and belongs to the technical field of optical imaging and microscopic imaging. The method comprises the steps that bright field illumination is used, a first image and a second image are collected at defocus positions which are vertically symmetrical on a sample focal plane respectively, and the defocus distance is larger than the physical depth of field of an objective lens; and carrying out pixel-level gray value subtraction on the two images to obtain a digital differential phase image. Digital image processing is adopted to replace optical shearing and interference of a traditional DIC, a polarized optical element and a special DIC prism are not needed, the system cost and complexity are remarkably reduced, the system can be compatible with non-standard optical material sample containers such as a plastic culture dish, and the directional shadow problem of the traditional DIC is solved. Meanwhile, by providing two specific implementation modes, namely accurate positioning acquisition and automatic focusing fusion acquisition, the imaging efficiency and the system robustness are further improved on the basis of ensuring the high contrast and the pseudo three-dimensional relief imaging effect.

The invention relates to cyclotrithio-tri (2-mercaptoethylthio) mercaptan as shown in a formula I and a preparation method and application thereof. A two-step method of thio reaction and nucleophilic substitution is adopted. In the step I, thiourea is used as a sulfur source, epoxy atoms in trioxymethylene are replaced by sulfur atoms one by one under the condition of strong acid, and 1, 3, 5-trithiacyclohexane is generated. In the nucleophilic reaction of acid catalytic activation in the step II, 1, 3, 5-trithioxane and Lewis acid are subjected to coordination complexation firstly, one sulfydryl in dithiol serves as a nucleophilic reagent to attack an electrophilic carbon center of a ring-opening intermediate, a new C-S bond is formed, and a linear intermediate containing sulfydryl is generated; according to the process, three thiol groups are introduced in sequence step by step, and sulfur alkylation substitution is completed. The obtained product has the characteristics of high purity, high light transmittance and large refractive index, and can be used for preparing optical materials with ultrahigh refractive index and high light transmittance.

The invention relates to a compound containing a cation represented by the following chemical formula 1, an electro-optical material, an electro-optical modulator, and an optoelectronic integrated circuit. [Chemical Formula 1] In Chemical Formula 1, A, D, L1, L2, R3a, and R3b are as defined in the specification.

The invention relates to the technical field of optical materials, in particular to a boron-containing quantum dot and a preparation method thereof, an optical component and electronic equipment. The boron-containing quantum dot comprises a core layer and a shell layer coating the core layer, at least one of the core layer and the shell layer includes boron and a Group II-VI semiconductor compound. The boron is doped into at least one of the core layer and the shell layer in an interlattice doping manner, and in the core layer and / or the shell layer, the boron is connected with non-metallic elements in the II-VI group semiconductor compound through chemical bonds. The boron-containing quantum dot further comprises an adsorption layer located on the surface of the shell layer, and the adsorption layer comprises boron. The II-VI group semiconductor compound comprises at least one of a II-VI group binary compound, a II-VI group ternary compound and a II-VI group quaternary compound. The thermal stability of the quantum dot material can be improved.

The invention relates to the technical field of infrared optical materials, and particularly discloses an N-type chromium-doped high-resistance infrared silicon single crystal and a preparation method thereof. The N-type chromium-doped high-resistance infrared silicon single crystal is singly doped, the doping concentration of chromium oxide is 40-160ppm, and in the preparation process, specific constant-temperature heat treatment is carried out in a cooling stage. The concentration of free carriers in the silicon single crystal is remarkably reduced by singly doping chromium oxide and utilizing the deep energy level compensation effect of chromium element, the conduction type of the single crystal is N type, the resistivity is stably increased to above 1120ohm.cm, the average infrared transmittance of the wave band of 2-6 microns is greater than 53%, the stress birefringence is less than 3nm / cm, the process window is wide, and the operation is simple and convenient. The method is particularly suitable for preparing the silicon single crystal of a large-size and high-performance infrared optical system.

An optical lens molding system includes a first mold member having a first mating surface and a first molding surface for molding a front surface of an ophthalmic spectacle lens. The optical lens molding system further includes a second mold member comprising a gasket body having a second molding surface for molding a back surface of an ophthalmic spectacle lens and a second mating surface configured to engage the first mating surface to form an air-tight seal therebetween. A molding chamber may be formed between the first molding surface and the second molding surface when the first mold member is received within the gasket body of the second mold member, and the gasket body includes a fill port for directing a flow of liquid optical material into the spectacle lens molding chamber.

The present invention relates to a novel organic material field. The episulfide compound having a sulfoxide structure can effectively improve the alkali corrosion resistance of optical material substrates due to the presence of polar groups, thereby increasing the yield of substrates and reducing production costs.

The invention discloses a micro-nano structure for realizing window efficient transmission under the condition of maximum-angle incidence and a design method. The design method comprises the following steps: selecting an optical material with good optical transmission performance as a material of a bionic moth eye micro-nano structure window; deriving structural design parameters; selecting a proper bionic moth eye micro-nano structure type; the preliminarily designed bionic moth eye micro-nano structure is optimized through simulation software, so that the optimal high transmittance is achieved; and optimizing and modifying the bionic moth eye micro-nano structure, and verifying the bionic moth eye micro-nano structure by using simulation software to determine the maximum-angle incidence bionic moth eye micro-nano structure. According to the method, a high-transmittance bionic moth eye micro-nano structure window is designed by combining simulation software on the basis of a preliminarily designed bionic moth eye micro-nano structure according to optical theories such as a sub-wavelength diffraction theory and an equivalent medium theory. Compared with a common bionic moth eye micro-nano structure window, the window can meet the observation and detection requirements of a visual angle close to 180 degrees under the condition of large-angle incidence.

The invention discloses a large-view-field low-distortion infrared telecentric scanning objective lens which comprises a lens body, the lens body is composed of a first lens, a second lens, a third lens, a fourth lens and a fifth lens which are arranged along an axis, the first lens is a positive lens, the second lens is a negative lens, the third lens is a negative lens, the fourth lens is a meniscus positive lens, and the fifth lens is a negative lens. The fifth lens is a positive lens, and the first lens and the second lens are cemented lenses. According to the invention, through combination of a plurality of lenses and the balsaming lens, high optical index, good temperature adaptability, low distortion, large target surface and large entrance pupil diameter are realized; by reasonably distributing the focal power of each lens and adopting the combination of optical materials with specific refractive index and Abbe number, various aberrations such as spherical aberration, curvature of field, chromatic aberration and the like are effectively corrected, so that high-quality imaging with system RMS wavefront less than 0.02 lambda is realized, the distortion is strictly controlled below 0.02%, and the imaging quality is greatly improved. And a sub-pixel-level accurate positioning capability is realized for high-precision machine vision and measurement detection.

The invention discloses a high-speed and high-extinction-ratio cascade MZI (Mach Zehnder Interferometer) electro-optical switch based on an electro-optical material. According to the electro-optical switch, a plurality of MZI structures are cascaded and integrated on an electro-optical material platform (such as lithium niobate or lithium tantalate) with an ultra-wide optical transparent window, and the initial phase error of each modulation arm is subjected to thermo-optical calibration by utilizing the refractive index change of an electro-optical material caused by temperature regulation and control; therefore, the consistency and long-term stability of the initial phase of the cascaded MZI are ensured. After thermo-optical phase calibration is completed, electro-optical refractive index regulation and control can be carried out on a plurality of phase modulation arms of the cascaded MZI at the same time only by applying a single driving voltage, and optical switch switching with the ultrahigh extinction ratio is achieved. The device has a pre-calibration function, a working point is stable and does not drift after calibration, and high-speed and high-extinction-ratio switching can be achieved only through a high-speed signal; and meanwhile, the device has the advantages of simple structure, flexible design, easiness in cascade expansion, low requirement on technological parameter tolerance and the like.

The invention relates to an azo blue dichroic dye compound and application thereof, and belongs to the technical field of organic optical materials. In order to solve the problem of insufficient thermal stability of the existing azo blue dichroic dye compound, the invention provides an azo blue dichroic dye compound with a structure as shown in a formula I, r1 and R4 are respectively and independently selected from C1-C6 saturated alkyl substituent groups, R2 represents-H, CH3 or-F, R3 represents hydrogen atoms or C1-C6 saturated alkyl substituent groups, and R2 and R3 cannot be hydrogen atoms at the same time. The molecular structure can effectively inhibit the risk of thermal isomerization of azo bonds, improves the stability of dye molecules in a high-temperature environment, and can be used for high-temperature application scenes such as vehicle-mounted sunroofs and the like.

The invention belongs to the field of polarization optics and instruments, and discloses an infrared phase aberration eliminating phase retarder. The phase retarder is formed by attaching two rhombic prisms made of infrared optical materials, and one or more reflecting surfaces of the phase retarder are coated with metal reflecting films. Incident light beams are reflected for four times in the prism and then are emitted, and a specific amount of phase difference is introduced between a p component and an s component of light waves through total internal reflection and metal film reflection. The phase delayer can be designed to be used for near-infrared, medium-wave and long-wave infrared bands, has a certain phase aberration eliminating capability in the designed bands, can realize phase delay of 90 degrees, 180 degrees or other specific values, is parallel to an emergent light beam and an incident light beam, has no transverse movement of the light beam under the normal incidence condition, and is also easy to process and manufacture. The achromatic phase retarder can be used in various infrared polarization optical systems and is used for realizing conversion of infrared light wave polarization states.