1947results about "Optical articles" patented technology

The invention relates to the technical field of semiconductor luminescence, and discloses a manufacturing method of a lens module, a mold, the lens module and a sensor device. The manufacturing method comprises the following steps: S1, arranging at least two cavity structures with upper and lower openings in the bearing part; the upper mold and the lower mold are each internally provided with a mold cavity with an opening in one side. And mold cavities of the upper mold and the lower mold extend into the cavity structure from the upper opening end and the lower opening end of the bearing part correspondingly to be aligned and closed. And a gap is reserved between the upper mold and the lower mold in the mold closing process. And S2, a mold cavity for mold closing is filled with the light-transmitting glue, and the redundant light-transmitting glue flows out through gaps in the peripheries of the upper mold and the lower mold and adheres to the inner wall of the bearing part. And S3, after curing, the upper mold and the lower mold are moved away, and a first lens and a second lens are formed in the two cavity structures respectively. The manufacturing method is simple and high in efficiency, and the manufactured sensor device is simple and stable in structure, good in sealing performance, high in precision and easy to optically design.

The invention belongs to the field of production control, and particularly discloses a control method of a thick-wall optical product precision injection molding hot runner system, which comprises the following steps of: acquiring mold geometric data of local thickness distribution in a mold-containing cavity along a melt flowing direction, calculating theoretical cooling time constants of each region by combining material thermophysical parameters, and calculating the cooling time constant of each region; establishing a thickness-cooling rate mapping relation model; predicting the time when the melt reaches each area and the effective cooling time according to an injection time sequence; solving a temperature compensation value of a heating area corresponding to the hot runner by taking the minimum final temperature variance when the key area is ejected as a target; and finally, dynamically applying a compensation value according to a time sequence before the melt arrives, and withdrawing / adjusting after region filling is completed or a pressure maintaining stage is entered. The invention can balance the temperature field of the mold cavity, reduce the refractive index gradient and shrinkage defect, improve the optical performance and yield of the product, and is suitable for precise injection molding of the thick-wall optical product.

A contact lens assembly includes a cup, a dry contact lens that is not for being worn on an eye, a sealing layer removably connected to the cup, and a wetting liquid supply. The sealing layer and the cup jointly form an enclosed space that receives the dry contact lens therein and that does not accommodate any liquid. After at least one of the sealing layer and the cup produces an opening, the cup can receive a wetting liquid from the wetting liquid supply through the opening, such that the dry contact lens is immersed in the wetting liquid to form a wet contact lens that is suitable for being worn on the eye and that has a water content greater than a water content of the dry contact lens.

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.

A method for designing a digital twin of a coated spectacle lens with a computer for the purpose of a use of the digital twin for manufacturing a coated spectacle lens and a method for manufacturing a coated spectacle lens are provided. The spectacle lens contains a predefined structure or a plurality of predefined structures. The predefined structure or structures are formed by selectively curing the coating composition with a laser beam.

The invention provides an optical silica gel part liquid forming automatic production taking-out device which comprises an injection molding machine rack, a three-plate mold set, a first material taking assembly, a second material taking assembly, a water gap taking and placing assembly, a master control system, a servo drive translation mechanism and a control screen. The three-plate mold set is correspondingly installed in the middle of the injection molding machine rack, and a truss is installed on the injection molding machine rack; the first material taking assembly and the second material taking assembly are installed on the truss and located on the two opposite sides of the three-plate mold set correspondingly, and the water gap taking and placing assembly is installed on the side, close to the first material taking assembly, of the truss. The control screen is installed on the portion, close to one side of the second material taking assembly, of the truss. A servo drive translation mechanism matched with the first material taking assembly and the second material taking assembly is installed above the injection molding machine rack in the length direction of the injection molding machine rack. The production efficiency is improved.

[Problem] To provide a novel polarizing plate that inhibits a poor external appearance of a polarizing film due to thermal contraction, and that excels in durability. [Solution] This polarizing plate comprises a polarizing film composed of a polyvinyl alcohol–based resin, and a supporting base material layered on at least one of the surfaces of the polarizing film with a bonding layer therebetween, said supporting base material being light-transmitting, and is characterized in that the bonding layer is composed of a molecular bonding agent that binds the polarizing film and the supporting base material together via a chemical bond.

Multi-layered articles or products comprising layers of filled polymer compositions, methods of making and applications or uses thereof.

Imaging lens arrangement (100), comprising: an optical plastic element (110), comprising: an incidence surface (111), wherein an imaging light enters the optical plastic element (110) through the incidence surface (111); a reflective surface (112), wherein the imaging light changes direction through the reflective surface (112); an exit surface (113), wherein the imaging light exits the optical plastic element (110) through the exit surface (113); and at least one connecting surface (130) which is used to connect the incident surface (111), the reflecting surface (112) and the exit surface (113), wherein the at least one connecting surface (130) comprises: a sprue (131) which is arranged on the at least one connecting surface (130), and wherein the sprue (131) is raised relative to an adjacent section (134) of the at least one connecting surface (130); a divergent nozzle surface (132) connected to the sprue (131) and the adjacent section (134), wherein the divergent nozzle surface (132) diverges from the sprue (131) and extends in a direction of the adjacent section (134); and a gate remnant (133) which is arranged on a surface of the sprue remnant (131), wherein a contour of the gate remnant (133) is linear and the gate remnant (133) extends over the surface of the sprue remnant (131); wherein, when projected along a direction in a front view of the adjacent section (134) of the at least one connecting surface (130), a projection surface of the divergent nozzle surface (132) is As, a projection surface of the sprue residue (131) is Ag, and the following condition is met: 0.08 ≤ As / Ag ≤ 0.68.

The present invention provides a silicone hydrogel contact lens formulation, comprising a polymerizable siloxane component, a hydrophilic N-vinyl amide monomer, triphenylphosphine (TPP) and one or more of anthraquinone blue tinting agent, a benzophenone UV-absorbing agent or a benzotriazole HEVL absorber; a silicone hydrogel contact lens formed from the polymerisation of the silicone hydrogel contact lens formulation; and the use of an anthraquinone blue tinting agent, a benzophenone UV- absorbing agent and / or a benzotriazole HEVL absorber to stabilise a formulation comprising a polymerizable siloxane component, a hydrophilic N-vinyl amide monomer and TPP.

A lens blank includes a first layer and a second layer. The first layer has an anterior surface and a posterior surface and is formed of a base material and one or more energy absorptive dyes generally uniformly dispersed throughout the base material. The one or more dyes are configured to absorb electromagnetic energy. The second layer is bonded or permanently attached to the posterior surface of the first layer and is formed of a generally clear base material.

A computer-implemented method for generating printing instructions for inkjet printing a spectacle lens, wherein the printing instructions are based on a digital twin of the spectacle lens, the digital twin being sliced into a layer stack. The method includes the steps of 1) positioning a volume element in a discrete xm+1, ym+1, zm+1 . . . xn+1, yn+1, zn+1 position of a layer of the layer stack, based on a positioning of a volume element in a discrete xm, ym, zm . . . xn, yn, zn position of an adjacent layer of the layer stack; or 2) not positioning a volume element in a discrete xm+1, ym+1, zm+1 . . . xn+1, yn+1, zn+1 position of a layer of the layer stack, based on a positioning of a volume element in a discrete xm, ym, zm . . . xn, yn, zn position of an adjacent layer of the layer stack.

A spectacle lens design includes an aperture and at least two ring-shaped focusing structures surrounding the aperture. The aperture has a dioptric power, and the ring-shaped focusing structures surrounding the aperture provide an additional power relative to the dioptric power of the aperture. A ring-shaped diffuser is arranged between neighboring ring-shaped focusing structures. Neighboring ring-shaped focusing structures can adjoin each other with a ring-shaped contact line between them forming the ring-shaped diffuser. Neighboring ring-shaped focusing structures can also be arranged at a distance to each other and at least one of the ring-shaped focusing structures provides a ring shaped focal line. Neighboring ring-shaped focusing structures can also be arranged at a distance to each other and at least one of the ring-shaped focusing structures consists of lenslets that adjoin each other so as to form a ring of lenslets and provides a plurality of foci along a ring shaped line.

The invention relates to a method for producing at least one micromirror element (200) as it can be used in micro-electro-mechanical systems (100), in particular for use in semiconductor technology equipment (1), and to a micro-electro-mechanical system (100) comprising corresponding micromirror elements (200). The process includes the following steps: - Providing a flat, two-sided mirror substrate (210); - Incorporating a predetermined shape at least on the side (215) of the provided mirror substrate (210) intended to be reflective; and - Applying a reflective coating (220) at least to the side (215) of the provided mirror substrate (210) intended to be reflective.

A method for fabricating functional optical components. A detackable adhesive layer is deposited on an intermediate substrate. A curable liquid is deposited onto the detackable adhesive layer on the intermediate substrate. An imprint template is used to transfer patterns onto the curable liquid followed by curing thereby forming an imprinted patterned material on the intermediate substrate. A layer of functional material is deposited on the imprinted patterned material. Furthermore, a polymer layer is deposited on top of the functional material layer. A correlated etch of the polymer layer and the functional material layer is then performed thereby forming an etched functional material surface. The etched functional material surface is bonded to a final substrate. The imprinted patterned material is then detacked from the intermediate substrate at the detackable adhesive layer.

The utility model relates to the technical field of automatic production of contact lenses, in particular to liquid injection and mold closing equipment for light diffusion sheets of contact lenses, which comprises a temporary storage dust removal mechanism for temporarily storing an upper mold, a rotary pickup mechanism for carrying and rotating the upper mold, and a mold closing module for driving the rotary pickup mechanism to move, during rotary mold closing, an upper mold is carried to the temporary storage dust removal mechanism, the temporary storage dust removal mechanism carries out dust removal on the upper mold and then temporarily stores and places the upper mold, the mold closing module drives the rotary picking mechanism to reach the temporary storage dust removal mechanism to obtain the upper mold, the rotary picking mechanism rotates the upper mold to a specified angle, and the mold closing module drives the rotary picking mechanism to place the upper mold on the lower mold. Mold closing is completed; according to the utility model, the overall structure is compact, the functions of temporary storage, dust removal, rotary alignment and placement and die assembly are integrated, and the rapid rotary alignment of the contact lens astigmatism sheet can be completed without redundant turnover and complex actions, so that the processing automation of the astigmatism sheet is improved, and the production and processing efficiency of the contact lens is improved.

Methods of manufacturing an optical device can include, in some implementations, providing a substrate having a first polymeric layer on a surface of the substrate and a second polymeric layer on the first polymeric layer, forming first openings in the second polymeric layer to define an etch mask composed of material of the second polymeric layer, and etching to form second openings in the first polymeric layer, wherein locations of the second openings are defined by the etch mask. A material is deposited in the second openings to form meta-atoms of a first metastructure, wherein adjacent ones of the meta-atoms are separated from one another by polymeric material of the first polymeric layer. Optical devices including metastructures can be formed, where meta-atoms of the metastructure have a relatively high aspect ratio.

Provided herein are a soft contact lens for correcting an ocular refractive error of an eye, the soft contact lens comprising a vaulted portion and a specialty feature.

A method is for producing a master template with variable height features for imprint lithography on a device substrate includes providing a layer stack comprising a substrate, an etch stop layer on the substrate, and a pattern layer on the etch stop layer. The method involves creating height gradation in the pattern layer to obtain a height graded pattern layer, forming the master template by providing a pattern comprising a plurality of features into the height graded pattern layer. This method enables the production of features with varying heights, which can be particularly useful in applications such as optical devices where such features may influence the functionality and efficiency of the device.

The utility model discloses a coining press for contact lens production, and relates to the technical field of contact lenses. The device comprises a workbench, the top of the workbench is fixedly connected with a vertical plate, the top of the vertical plate is fixedly connected with a plurality of hydraulic telescopic rods at equal intervals, the output ends of the hydraulic telescopic rods penetrate through the vertical plate and are fixedly connected with an upper die, and the top of the workbench is in lap joint with a placing base. And a plurality of lower molds are fixedly connected to the top of the containing base at equal intervals, fixing mechanisms are symmetrically arranged on the top of the workbench, a handle is rotated to drive a clamping block to clamp and fix the containing base, and the risk that the containing base shifts during working is reduced.

An eyewear lens resin containment system is used to create an eyewear lens. The system may include a first cone-shaped wall attached to an eyewear lens substrate. The system may include a walled substrate having a second cone-shaped wall that is an integral part of an eyewear lens substrate. The system may include a first containment wall printed on an eyewear lens substrate. The system may include a second containment wall manufactured on an eyewear lens substrate. In each case, there is a resin-tight connection between the wall and substrate. In each case, the substrate and the wall are configured to have resin dispensed on them.

Provided are a camera module, a molded photosensitive assembly and a manufacturing method thereof, and an electronic device. The molded photosensitive assembly is assembled with at least one optical lenses to form a camera module. The molded photosensitive assembly includes an imaging assembly, a molded base, and a filter member. The molded base includes a first molded portion and a second molded portion. The first molded portion embeds a part of the imaging assembly. The second molded portion is integrally formed on a first upper surface of the first molded portion, and the second molded portion has a second upper surface and a second outer side surface. A filter member is attached to the second upper surface of the second molded portion, and corresponds to a photosensitive path of the imaging assembly. The second upper surface of the second molded portion is higher than the first upper surface of the first molded portion, so as to define and form an outer space by a second outer side surface of the second molded portion and the first upper surface of the first molded portion.

The invention provides a volume 3D printing optical element manufacturing method based on multi-dimensional spin-coating surface modification, which comprises the following steps: preparing a photosensitive resin precursor solution containing a low-concentration photoinitiator, and performing exposure molding through a volume 3D printing technology to obtain a semi-cured initial blank; preparing a spin-coating liquid containing a high-concentration photoinitiator and an optional functional additive, and coating the surface of the primary blank with the spin-coating liquid through a precise spin-coating process; and finally, light curing is performed in a vacuum environment, so that the liquid film is completely crosslinked and chemically bonded with the surface of the initial blank. The high-concentration initiator spin-coating layer is used for overcoming the oxygen inhibition effect, a traditional solvent cleaning process is replaced, and the Ralt is obtained; the high-smoothness optical surface with the thickness of 5 nm is obtained, the original geometric accuracy of printing is kept, meanwhile, spin coating liquid is used as a universal carrier, full-color coloring, gradient color and multi-layer function superposition of the surface of an optical element are achieved, and the application range of volume printing in the optical field is greatly expanded.

This invention provides a method for easily manufacturing a wavelength division device having multiple channels. [Solution] The wavelength division device includes a substrate having one or more grooves, a plurality of filter bars disposed in one or more of the grooves of the substrate, and a prism disposed on the substrate. Each of the filter bars corresponds to an optical filtering wavelength. The prism is used to cover the plurality of filter bars. The surface of the substrate is etched to form one or more of the grooves. After the plurality of filter bars are coated, the plurality of filter bars are joined in one or more of the grooves of the substrate. The resin disposed on the substrate is imprinted by a processing mold to form the prism.

The present application relates to cable sheathing technology field, disclose a kind of based on distribution valve's optical cable sheathing color-changing feed device, including, with the throat of extruder communication main pipeline, further include: two respectively with different color color masterbatch warehouse communication branch pipeline, and two branch branch pipeline with the main pipeline form Y shape convergence section in the way of oblique insertion;Main valve and two branch valves in branch pipeline are located in main pipeline, and two branch valves can switch start-stop closure;Between the round shell connected between main pipeline and extruder, the inner cavity is opened in the round shell, and the inside of the inner cavity is installed with rotatable adjustment cylinder.The fixed dead space between "Y shape convergence section-extruder throat" is replaced by 180 ° rotatable cross valve core in the present application, and horizontal pressure difference airflow is formed by using the same mechanical stroke to drive piston cylinder at switching moment, old material in switching channel is blown out as a whole, and the effect of physical cutting old material section and transition length shortening is achieved.

The application discloses a lens mold closing machine, which solves the problems of low efficiency and insufficient positioning accuracy of traditional single-head mold closing equipment through the cooperative design of a double-combination mold closing mechanism and a directional conveying system. The lens mold closing machine comprises an A / B mold feeding belt, a mold closing discharge belt and two sets of symmetrically arranged mold closing mechanisms. The mold closing mechanism adopts coaxially arranged upper spindles and upper suction wheels, lower spindles and lower suction wheels, and cooperates with a lower suction wheel lifting mechanism to realize accurate lifting positioning of the mold, wherein the lower suction wheel can sink to make the mold fall to the mold closing discharge belt. The positioning mechanism is provided with movable positioning clamping jaws and a driving mechanism thereof, and can be moved to a mold closing station after completing mold clamping positioning at the end of the A / B mold feeding belt. The mold closing discharge belt adopts a three-stage conveying structure, and inclined guide sliding tables are arranged at the first and second ends of the mold closing discharge belt, so that the mold is automatically guided to the third end of the mold closing discharge belt for centralized output, and the conveying efficiency is significantly improved.

The problem to be solved by the present disclosure is to provide a transparent thermoplastic resin composition that is used in molded articles having excellent transparency, heat resistance, long-term thermal stability, light resistance, and moldability, and low yellowness. The present disclosure is a transparent thermoplastic resin composition including 95 to 99.999 mass % of a transparent thermoplastic resin (A) and 0.001 to 0.3 mass % of a phosphorus-based compound (B) represented by the general formula (1), and having a Vicat softening temperature of 105° C. or higher.

A method of forming a three-dimensional object is carried out by: (a) providing a carrier and an optically transparent member having a build surface, the carrier and the build surface defining a build region therebetween; (b) filling the build region with a polymerizable liquid, the polymerizable liquid comprising a mixture of: (i) a light polymerizable liquid first component, and (ii) a second solidifiable component that is different from the first component; (c) irradiating the build region with light through the optically transparent member to form a solid blocked polymer scaffold and advancing the carrier away from the build surface to form a three-dimensional intermediate having the same shape as, or a shape to be imparted to, the three-dimensional object, with the intermediate containing the second solidifiable component; and then (d) solidifying and / or curing the second solidifiable component to form from said three-dimensional intermediate the three-dimensional object.