4056results about "Optical articles" patented technology

An eyepiece includes a planar waveguide having a front surface and a back surface. The eyepiece also includes a grating coupled to the back surface of the planar waveguide and configured to diffract a first portion of the light propagating in the planar waveguide out of a plane of the planar waveguide toward a first direction and to diffract a second portion of the light propagating in the planar waveguide out of the plane of the planar waveguide toward a second direction opposite to the first direction and a wavelength-selective reflector coupled to the front surface of the planar waveguide. The wavelength-selective reflector comprises a multilevel metasurface comprising a plurality of spaced apart protrusions having a pitch and formed of a first optically transmissive material and a second optically transmissive material disposed between the spaced apart protrusions.

The invention relates to a composite microprism reflective film integrated with various triangular pyramids and a mold manufacturing method thereof, the surface of the microprism reflective film is formed by an array of identical parallelogram unit bodies, and each parallelogram unit body is composed of three identical triangular pyramids A, three identical triangular pyramids B, a triangular pyramid C and a triangular pyramid D, the bottom surfaces of the triangular pyramid A, the triangular pyramid B, the triangular pyramid C and the triangular pyramid D are identical equilateral triangles, the inclination angles of the three pyramid surfaces of the triangular pyramid A are alpha / 2 and alpha / 2 and beta / 2 + respectively, the inclination angles of the three pyramid surfaces of the triangular pyramid B are alpha / 2 and alpha / 2 and beta / 2-respectively, the inclination angles of the three pyramid surfaces of the triangular pyramid C are beta / 2 + respectively, and the inclination angles of the three pyramid surfaces of the triangular pyramid D are beta / 2-respectively. Greater than zero. According to the method, the performance under different application conditions can be reasonably optimized, so that wide-angle performance improvement and optimization and balance of overall comprehensive performance can be realized.

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.

A machine for cleaning lenses, like eyeglass lenses. The machine comprises a handling unit for carrying and transferring a lens along a processing path, and at least one processing unit having a processing chamber for processing the lens carried by the handling unit at a processing position along the processing path, wherein the processing unit comprises a cleaning unit having a cleaning chamber as the processing chamber for cleaning the lens. The processing unit is movable along a movement path between: (i) a retracted position in which the lens carried by the handling unit is able to be transferred by the handling unit along the complete processing path outside and relative to the at least one processing unit, and (ii) a receiving position in which the lens carried by the handling unit at the processing position is received in the processing chamber to allow the lens be processed.

Disclosed is a retainer (10) for processing an optical workpiece. The retainer comprises a holding arrangement (72) and a support assembly (73) for the workpiece. A rubber-elastic membrane (75) mounted on a housing (74) has a retaining section (76), on the outer side (77) of which one surface of the workpiece can be placed to lie flat. The membrane, together with the housing defines a chamber (78) in which a plurality of separately longitudinally movable pins (79) of the support assembly are retained. A pin end (80) of each pin can be brought to bear against an inner side (81) of the retaining portion of the membrane and can be fixed relative to one another by a clamping mechanism (82) against longitudinal movement with respect to the housing. The holding arrangement for the workpiece is provided in or on the retaining section of the membrane.

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 invention relates to a microprism reflective film combined by three kinds of triangular pyramids and a manufacturing method of a mold of the microprism reflective film, the surface of the microprism reflective film is formed by an array of identical parallelogram unit bodies (1), each parallelogram unit body (1) is composed of four identical triangular pyramids A, one triangular pyramid B and three identical triangular pyramids C, the directions of the four triangular pyramids A and the directions of the three triangular pyramids C and the triangular pyramids B form 180 degrees, and the three triangular pyramids C and the triangular pyramids B are arranged among the four triangular pyramids A in a staggered manner; the bottom surfaces of the triangular pyramids B and C are the same equilateral triangles, the inclination angles of the three pyramid surfaces of each triangular pyramid A are alpha / 2, the inclination angles of the pyramid surfaces of the triangular pyramids B are beta / 2, and the inclination angles of the three pyramid surfaces of the triangular pyramids C are alpha / 2, alpha / 2 and beta / 2 respectively. According to the method, the performance under different application conditions can be reasonably optimized, so that wide-angle performance improvement and optimization and balance of overall comprehensive performance can be realized.

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.

A novel method for producing a contact lens whereby it is possible to solve at least one problem that becomes an obstacle when equipping a contact lens with a separate component such as an electronic element. When matching a component-supporting mold supporting a component to be embedded with a first mold, performing curing treatment of a first molding material, and thereby obtaining a primary molded article in which the component is inserted, the component-supporting mold is removed while curing of the first molding material is incomplete on the component-supporting mold side. A second mold is subsequently matched with the first mold in which the primary molded article is left, filled with a second molding material, and curing treatment is performed, thereby producing a contact lens as an integrally molded product in which the component is embedded.

Provided are a foldable optical film with excellent impact resistance and with capability to improve design quality, and an image display device including the same. An aspect of the present invention provides a foldable optical film 10 with a front surface 10A and a back surface 10B opposite to the front surface 10A, wherein optical film 10 includes a hard coat layer 12, a resin layer 13, and a decorative layer 14; the hard coat layer 12 is located closer to the front surface 10A than the resin layer 13 and the decorative layer 14 in the optical film 10; and the resin layer 13 has a film thickness of 10 μm or more, and the resin layer 13 has a Martens hardness of 1 MPa or more and 100 MPa or less.

A ophthalmic lens for inhibiting progression of myopia includes a central zone and an annular zone. The annular zone includes subsurface optical elements formed via laser-induced changes in refractive index of a material forming the annular zone. The subsurface optical elements are configured to modify distribution of light to the peripheral retina of a user so as to inhibit progression of myopia.

A method of manufacturing a sterile stack of peelable lenses includes coating a first lens (or stack of lenses) with a first adhesive coating, heating the first adhesive coating to initiate curing, exposing the first adhesive coating to ultraviolet light to continue curing, laminating a second lens (or stack of lenses) onto a surface of the first adhesive coating to produce a stack of lenses, coating the second lens with a second adhesive coating, heating the second adhesive coating to initiate curing, exposing the second adhesive coating to ultraviolet light to continue curing, laminating a third lens (or stack of lenses) onto a surface of the second adhesive coating to add the third lens to the stack of lenses, and exposing the stack of lenses to an electron beam to continue curing of the first and second adhesive coatings.

The light guide injection mold comprises a movable mold assembly, the movable mold assembly comprises a movable mold plate provided with an inner sliding block and a plurality of insert pins, and the insert pins are arranged in the inner sliding block in a penetrating mode and are in sliding fit with the inner sliding block; the supporting plate drives the inner sliding block to move, so that the inner sliding block is separated from the connecting part on the light guide strip and the positioning column; a top plate; the ejection type movable mold core is fixedly connected to the ejection plate and provided with a cavity surface used for forming the connecting end, and when the ejection plate acts, the ejection type movable mold core is driven to move in the direction away from the movable mold plate; and the movable insert is fixedly mounted on the movable mold plate and embedded in the ejection type movable mold core, and the movable insert is provided with a tooth groove structure used for forming light distribution textures. According to the light guide injection mold provided by the invention, by introducing the design of the inner sliding block for oblique demolding, the insert pin structure for penetrating and supporting and the movable mold core for step-by-step ejection, precise protection and sequential demolding of a light guide strip connecting part, a positioning column and light distribution textures are realized, the risk of structural damage is remarkably reduced, and the demolding efficiency and the forming quality are improved.

A contact lens assembly 100 is disclosed. The contact lens assembly 100 comprises a second lens member 104 located between first and third lens members 102, 106. A structured anterior surface region 110 of the first lens member 102 that defines a diffractive optical element and a posterior surface region 115A of the second lens member 104 together define a first cavity. A structured posterior surface region 112 of the third lens member 106 that defines a diffractive optical element and an anterior surface region 113A of the second lens member 104 together define a second cavity. The posterior and anterior surface regions 115A, 113A of the second lens member 104 do not include a diffractive optical element.

The present technology relates to bases for multi-component accommodating intraocular lenses (AIOLs) and associated methods for making and using such devices. The bases configured in accordance with embodiments of the present technology can be configured to provide an optical correction that adjusts in response to accommodative forces from a patient's eye and can be formed from one or more first materials and one or more second materials. Compared to the first material, the second material can be less resistant to deflection / deformation, e.g., in response to forces from the patient's eye. Accordingly, including the second material in the base can increase the compliance of the base and, in at least some instance, increase the responsive of the base to accommodative forces from the eye.

The invention discloses a novel optical mold compression structure beneficial to rapid injection molding. The core of the novel optical mold compression structure is the design of a movable mold core. The movable mold plate is provided with a first through hole, and a guide sliding block and a movable mold insert are fixed in the first through hole. The guide sliding block is provided with a second through hole, the movable mold insert is provided with a third through hole, the guide sliding block is located below the movable mold insert, and the movable mold core penetrates through the through holes of the guide sliding block and the movable mold insert in a sliding mode. The movable mold core comprises a vertical plane guide section and an inclined plane matching section, the vertical plane guide section is matched with the second through hole, and a lower oil groove is formed in the upper-middle part of the vertical plane guide section; the outer side wall of the slope matching section is a first slope, the top inclines towards the center, and an oiling groove is formed in the middle. The inner side wall of the third through hole is arranged to be a second inclined face matched with the first inclined face, and when the movable mold core moves upwards to the highest position, the two inclined faces are attached to each other. A new compression structure is formed by improving the structure between the movable mold core and the movable mold insert, so that the problems of fit clearance and friction burn are solved, and the D1 can be suitable for producing a thin-wall optical mold for rapid injection molding.

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.

A device for interface shape of an optical element including at least one low-coherence light source, at least one optical sensor, an interferometric device illuminated by the light source and configured for shaping at least one measurement beam and at least two reference beams, directing one measurement beam to the element to pass through the interfaces, and directing the light from at least two interfaces to the sensor or sensors, each sensor globally configured for detecting at least two interference signals resulting respectively from interferences between the measurement beam reflected by one of the at least two interfaces and one of the reference beams; the measurement device also including a positioner for positioning a coherence area at the level of each interface and a digital processor for producing, from the interference signals, an item of information of the shape of each interface according to a field of view.

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 a delamination-resistant embedded silicone hydrogel contact lens having an insert that is embedded in a silicone hydrogel bulk material. The insert is made of a crosslinked polymeric material having a refractive index higher than that of the silicone hydrogel bulk material by at least 0.07 and comprises a diffractive structure disposed on one of the front and back curve surfaces of the insert for providing a diffractive power that contributes to the overall optical power of the contact lens.

The invention relates to a microprism reflective film integrated with three types of triangular pyramid combinations and a manufacturing method of a mold of the microprism reflective film, which are characterized in that the surface of the microprism reflective film is formed by the same parallelogram unit array, and each parallelogram unit consists of four same triangular pyramids A, two mixed triangular pyramids B and two mixed triangular pyramids C, the bottom surfaces of the triangular pyramids A, the mixed triangular pyramids B and the mixed triangular pyramids C are the same equilateral triangles, the inclination angles of the three pyramid surfaces of each triangular pyramid A are alpha / 2, the inclination angles of the pyramid surfaces of the mixed triangular pyramids B are alpha / 2, alpha / 2 and beta L, and the inclination angles of the three pyramid surfaces of the mixed triangular pyramids C are alpha / 2, alpha / 2 and beta R; according to the method, the performance under different application conditions can be reasonably optimized, so that wide-angle performance improvement and optimization and balance of overall comprehensive performance can be realized.

Systems for the manufacturing of waveguide cells in accordance with various embodiments can be configured and implemented in many different ways. In many embodiments, various deposition mechanisms are used to deposit layer(s) of optical recording material onto a transparent substrate. A second transparent substrate can be provided, and the three layers can be laminated to form a waveguide cell. Suitable optical recording material can vary widely depending on the given application. In some embodiments, the optical recording material deposited has a similar composition throughout the layer. In a number of embodiments, the optical recording material spatially varies in composition, allowing for the 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.

The disclosure describes an improved drop-on-demand, controlled volume technique for dispensing resist onto a substrate, which is then imprinted to create a patterned optical device suitable for use in optical applications such as augmented reality and / or mixed reality systems. The technique enables the dispensation of drops of resist at precise locations on the substrate, with precisely controlled drop volume corresponding to an imprint template having different zones associated with different total resist volumes. Controlled drop size and placement also provides for substantially less variation in residual layer thickness across the surface of the substrate after imprinting, compared to previously available techniques. The technique employs resist having a refractive index closer to that of the substrate index, reducing optical artifacts in the device. To ensure reliable dispensing of the higher index and higher viscosity resist in smaller drop sizes, the dispensing system can continuously circulate the resist.

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.

Disclosed is a method implemented by a computer for determining surfacing data to obtain a surface of a lens element, the surface of the lens element including: a refraction area having a first curvature; and multiple optical elements placed on at least part of the finished optical surface, each optical element having at least a second curvature.

Apparatuses, systems and methods for providing improved intraocular lenses (IOLs), include features for reducing side effects, such as halos, glare and best focus shifts, in multifocal refractive lenses and extended depth of focus lenses. Exemplary ophthalmic lenses can include a continuous, power progressive aspheric surface based on two or more merged optical zones, the aspheric surface being defined by a single aspheric equation. Continuous power progressive intraocular lenses can mitigate optical side effects that typically result from abrupt optical steps. Aspheric power progressive and aspheric extended depth of focus lenses can be combined with diffractive lens profiles to further enhance visual performance while minimizing dysphotopsia effects. The combination can provide an increased depth of focus that is greater than an individual depth of focus of either the refractive profile or the diffractive profile.

[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.