2471results 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.

The present disclosure is directed to methods for manufacturing ophthalmic lenses utilizing a freeform process, the method comprising: machining a lens blank, semi-finished lens blank and / or an intermediate ophthalmic lens precursor to form a surface of the spectacle lens with at least a portion of the surface comprising a curvature for the correction of the myopic prescription of the wearer; machining a pattern of a plurality of optical elements and / or spaces therebetween on the surface of the spectacle lens suitable for delivering an effective optical signal to the retinal receptors of a progressive myope to slow, significantly slow, stop and / or shorten / regress the progression of axial eye length growth; and / or polishing the surface of the spectacle lens; wherein, after polishing the spectacle lens, at least one of the plurality of optical elements may have a relative surface elevation change per millimeter interval substantially greater than at least a portion of the prescription surface over a comparable interval. The present disclosure is also directed devices and systems manufactured using the described manufacturing methods.

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.

Manufacturing a pre-molded stack of one or more lenses to be installable on a curved substrate such as a vehicle windshield includes placing a moldable stack of one or more lenses and adhesive layer(s) on a mold, applying heat and pressure to the moldable stack to produce a pre-molded stack of one or more lenses from the moldable stack, and removing the pre-molded stack from the mold. The pre-molded stack may have a compound curvature, which may match a curvature of the curved substrate. The mold may be formed using three-dimensional shape data derived from the curved substrate, such as by optically scanning the curved substrate.

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.

To allow systems for manufacturing waveguide cells in accordance with various embodiments to be configured and implemented in many different ways.SOLUTION: In many embodiments, various deposition mechanisms are used to deposit a layer(s) of an optical recording material(s) onto a transparent substrate. A second transparent substrate can be provided, and the three layers can be laminated to form a waveguide cell. A suitable optical recording material can vary widely depending on a given application. In some embodiments, the optical recording material deposited has a similar composition throughout a layer. In a number of embodiments, the optical recording material spatially varies in composition, enabling formation of optical elements with varying characteristics. Regardless of the composition of the optical recording material, any method of placing or depositing the optical recording material onto a substrate can be utilized.SELECTED DRAWING: Figure 11

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.

A lighting device for vehicles is provided with a housing, a cover lens covering an opening in the housing, a light module containing a number of light sources, and an optical unit for generating a predefined light distribution. The optical unit contains an optical waveguide that has a light entry surface and a light emitting surface. The optical waveguide is connected to the cover lens. A first section of the optical waveguide, facing the light source, protrudes from the inner surface of the cover lens, or the light entry surface of the optical waveguide is flush with the inner surface of the cover lens. A second section of the optical waveguide, facing away from the light source, protrudes from the outer surface of the cover lens, or the light emitting surface of the optical waveguide is flush with the outer surface of the cover lens.

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.

The utility model discloses a poly PA dye system polaroid which comprises an upper PA layer, a PVA layer and a lower PA layer which are sequentially stacked from top to bottom. And the upper PA layer and the PVA layer as well as the PVA layer and the lower PA layer are bonded by adopting a UV adhesive. The poly PA dye system polaroid provided by the utility model is bending-resistant and high-temperature-resistant and water-soaking-resistant, and does not have rainbow patterns.

The invention relates to the technical field of injection molding machining, and particularly discloses an injection mold of a progressive multi-focus lens and an injection molding process thereof.The mold comprises a movable mold body and a fixed mold body which are oppositely arranged from top to bottom, a fixed mold cavity is formed in the top of the fixed mold body, a molding table is arranged on the lower portion in the fixed mold cavity, and a molding cavity is formed in the middle of the top of the molding table; a movable mold table extending into the fixed mold cavity is arranged at the bottom of the movable mold, a shaping mold plate matched with the forming cavity is arranged at the bottom of the movable mold table, and after the movable mold and the fixed mold are close to each other to be closed, an injection mold cavity used for lens forming is formed through the shaping mold plate and the forming cavity; a deformable template corresponding to the progressive light curved surface of the lens is arranged at the bottom of the forming cavity, a temperature control assembly is arranged in the deformable template, and the temperature control assembly is used for controlling the temperature change to achieve accurate adjustment of the curved surface curvature of the deformable template; the temperature step adjustment of each curved surface section is precisely matched with the curvature, so that the optical precision of the injection-molded lens is improved.

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.

The invention relates to an optical distance measuring module, an assembling method thereof and an optical lens manufacturing method thereof. The optical distance measuring module comprises a base; the light emitting unit comprises a first optical lens and an infrared light source, and the infrared light source is arranged on the base; the light receiving unit comprises a second optical lens and a light sensing component, and the light sensing component is arranged on the base; the shading cover is arranged on the base, a first accommodating space and a second accommodating space are defined between the shading cover and the base, the first accommodating space and the second accommodating space are used for accommodating the light emitting unit and the light receiving unit respectively, and the shading cover comprises a first opening area and a second opening area which are used for arranging the first optical lens and the second optical lens respectively; wherein the first optical lens and the second optical lens are of an integrally formed structure. Therefore, the alignment precision of the first optical lens and the second optical lens can be improved, and the manufacturing error of the first optical lens and the second optical lens and the error of assembling the first optical lens and the second optical lens on the shading cover can be reduced.

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.

The invention relates to a mold for double-colored injection molding of an optical lens and an injection molding method thereof, and belongs to the technical field of injection molding, the mold comprises a movable mold, a fixed mold and a rotary compensation assembly, the rotary compensation assembly is connected to one end, deviating from the movable mold, of the fixed mold, and one end, deviating from the fixed mold, of the rotary compensation assembly is connected with a rotary table of a double-colored injection molding machine; the laser displacement sensor is connected to the side surface of the movable mold; the reflector is connected to one surface, facing the laser displacement sensor, of the rotation compensation assembly; after the rotary table rotates, when the laser displacement sensor receives an optical signal reflected by the reflector, the rotation compensation assembly performs compensation rotation according to a deviation value received by the optical signal; the technical problems that in the prior art, a gear and rack transmission mode is adopted, a reverse gap and a gap after abrasion exist, and when reciprocating rotation is carried out, the positioning precision cannot meet the double-color injection molding requirement of an optical lens easily can be solved.