6773results about "Optical articles" patented technology

A device comprises an array of voxels of solidified material defining at least one scan path, along which an error in a variable dielectric quantity at a target voxel is distributed by successive deposition and solidifying of a selected material along the scan path, in accordance with a prescription for the device. The prescription defines the dielectric quantity over the array of voxels.

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.

An accessory for a firearm includes a deflector integrated into the accessory and structured to alter a path of discharge gasses and / or debris after such gasses and debris are emitted from the firearm when the firearm is discharged. The deflector may be sized and shaped to alter a path of discharge gasses and / or debris after such gasses and debris pass a Loaded Chamber Indicator (LCI) of the firearm. The LCI indicates a presence of a cartridge within a firing chamber of the firearm, but openings within and around the LCI also provide a path for hot gasses and debris to strike accessories, which causes fouling and other deterioration.

The invention discloses a light guide plate film covering method, device and equipment, and the method comprises the steps: responding to the detected size, material and surface condition of a light guide plate, and judging whether the light guide plate meets a film covering standard or not; commanding the robot to grab the membrane material, accurately positioning the alignment operation of the light guide plate and the membrane material through a visual guidance system, and adjusting the fitting position; controlling the membrane material to be preliminarily attached to the light guide plate, and adjusting pressure and adsorption force in real time according to material characteristics; analyzing data of the visual detection system, commanding the intelligent fluid dynamics control device to process bubbles or wrinkles, and meanwhile, re-scanning the processed area to ensure that the defoaming effect is qualified; and controlling the curing time, the curing temperature or the UV light intensity according to the used curing mode. According to the technical scheme, the laminating quality is improved, and bubbles and flaws are reduced.

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.

An accommodating intraocular lens (AIOL) for implantation within a capsular bag of a patient's eye comprises first and second components coupled together to define an inner fluid chamber and an outer fluid reservoir. The inner region of the AIOL provides optical power with one or more of the shaped fluid within the inner fluid chamber or the shape of the first or second components. The fluid reservoir comprises a bellows region with fold(s) extending circumferentially around an optical axis of the eye. The bellows engages the lens capsule, and a compliant fold region between inner and outer bellows portions allows the profile of the AIOL to deflect when the eye accommodates for near vision. Fluid transfers between the inner fluid chamber and the outer fluid reservoir to provide optical power changes. A third lens component coupled to the first or second component provides additional optical power.

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 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.

Endoscopic optical coherence tomography (OCT) provides diagnostic images of internal organs and guides interventions in real-time. A liquid shaping method and system are provided for the rapid and scalable fabrication of high-performance OCT endoscopes working at various wavelength ranges. The method and systems enable the flexible customization of freeform lenses with sub-nanometer optical surface roughness by regulating the minimum energy state of curable optical liquid on a wettability-modified substrate and precisely controlling the liquid volume and physical boundary on a substrate. As a result, multiple endoscopes, for example, 800-nm OCT endoscopes with a diameter of approximately 0.6 mm including both rigid and flexible endoscopes, can be simultaneously fabricated. The liquid shaping method and systems offer new approaches for mass production of cost-effective and high-performance OCT endoscopes.

A method of reducing optical artifacts includes injecting a light beam generated by an illumination source into a polarizing beam splitter (PBS), reflecting a spatially defined portion of the light beam from a display panel, reflecting, at an interface in the PBS, the spatially defined portion of the light beam towards a projector lens, passing at least a portion of the spatially defined portion of the light beam through a circular polarizer disposed between the PBS and the projector lens, reflecting, by one or more elements of the projector lens, a return portion of the spatially defined portion of the light beam, and attenuating, at the circular polarizer, the return portion of the spatially defined portion of the light beam.

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.

Provided are: a window material and a light-transparent roof material which can autonomously change white turbidity in accordance with the temperature, and which have a simple structure and are easy to manufacture; and a vehicle, a ship, or an airplane, and a building comprising the window material and / or the light-transparent roof material. A window material or a light-transparent roof material according to the present invention comprises at least one light-transparent base material layer and at least one pressure-sensitive adhesive layer. The pressure-sensitive adhesive layer is formed from a pressure-sensitive adhesive composition containing, with respect to 100 parts by mass of a pressure-sensitive adhesive agent, 1-20 parts by mass of a thermosensitive noncrosslinked polymer and 1-100 parts by mass of thermosensitive crosslinked fine particles. The refractive index of the thermosensitive crosslinked fine particles is reduced as the temperature increases, and the reduction rate of the refractive index is larger in the vicinity of the melting temperature of the thermosensitive crosslinked fine particles than in a temperature range other than the vicinity of the melting point. The adhesive power of the pressure-sensitive adhesive composition is reduced as the temperature increases, and the reduction rate of the adhesive power is larger in the vicinity of the melting temperature of the thermosensitive non-crosslinked polymer than in the temperature range other than the vicinity of the melting point.

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.

The utility model provides a contact lens curing production line which comprises a circulating conveying line provided with an upper conveying track, a lower conveying track and a transfer device, and the transfer device is configured to transfer a mold conveyed by the upper conveying track to the lower conveying track or transfer a mold conveyed by the lower conveying track to the upper conveying track; the upper conveying track and the lower conveying track are provided with blocking air cylinders which are triggered by the detection piece to ascend or descend. A liftable curing plate is arranged in the curing box body; and a curing lamp panel matched with the mold is mounted on the curing plate. According to the contact lens curing production line, workpieces are conveyed into the curing box body through the upper conveying track for curing operation, then molds from which the workpieces are taken out are transferred to the lower conveying track through the transfer device and then transferred to the head end of the upper conveying track, and therefore circulating conveying of the molds is achieved, and the automation level of the curing production line is improved; and the production efficiency can be effectively improved.

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.

The invention provides a flexible optical fiber sensor, a preparation method and a remote wireless intelligent medical monitoring system, and belongs to the technical field of optical fiber sensing. Comprising two plastic optical fibers which are arranged at an interval, non-adjacent end parts of the two plastic optical fibers are respectively connected with a light emitting diode and a photodiode, the light emitting diode is used for emitting an optical signal into the plastic optical fiber at one end, and the photodiode is used for receiving the optical signal and outputting the optical signal after photoelectric conversion; and the hydrogel fiber flexible sensing part is arranged between the adjacent end parts of the two plastic optical fibers in a crossing manner, extends in the axial direction of the two plastic optical fibers, and is used for being in flexible contact with the skin to obtain a strain signal at a human body joint. The sensor is compact in structure and small in size, can be conveniently arranged at different positions on the surface of a human body, has good biocompatibility, is suitable for distributed layout and sampling on the surface of the human body, obtains multiple strain signals and carries out resolving, and therefore the purpose of remote wireless medical monitoring is achieved.

The present technology relates to scalable fluid-filling systems for accommodating intraocular lenses (AIOLs) and methods of operating the same. Fluid-filling systems as disclosed herein include a vacuum enclosure, a positioning assembly positioned within the vacuum enclosure, a fill needle and a vent needle positioned proximate to the linear stage assembly, an actuator coupled to the fill needle, and a beam emitter and a camera positioned external to the vacuum enclosure. The positioning assembly can be controlled to move an AIOL base such that the vent needle or the fill needle is inserted. The actuator can be controlled to pump fluid through the fill needle and into the AIOL base. The camera can measure a degree of distortion of a beam emitted through the AIOL base by the beam emitter. An optical power of the AIOL base can be determined based on the measured degree of distortion.

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.

The invention discloses an intelligent fiber-reinforced thermoplastic resin rib material and a preparation method thereof. The intelligent fiber reinforced thermoplastic resin rib material comprises a monitoring optical fiber, a continuous fiber woven sleeve and a continuous fiber reinforced thermoplastic resin prepreg winding layer, wherein the continuous fiber woven sleeve and the continuous fiber reinforced thermoplastic resin prepreg winding layer are sequentially arranged from inside to outside in the radial direction of the monitoring optical fiber. The fiber woven sleeve and the continuous fiber reinforced thermoplastic resin prepreg winding layer are bonded into a whole through a thermoplastic film sleeve wrapping the continuous fiber woven sleeve when the intelligent fiber reinforced thermoplastic resin rib material is subjected to hot melting; the monitoring optical fiber is wrapped by the continuous fiber braided sleeve, so that the melt of the thermoplastic film sleeve flowing into the continuous fiber braided sleeve is reduced, and the melt flowing into the continuous fiber braided sleeve is absorbed. According to the intelligent fiber-reinforced thermoplastic resin rib material, secondary processing does not need to be carried out on the surface or the interior of the rib material, and the body mechanical property of the rib material cannot be damaged. The preparation process is simple, the cost is controllable, and the survival rate of the optical fiber is high.

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.

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 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.

The invention discloses a laryngoscope blade integral forming mold, and relates to the technical field of laryngoscope blade production, the laryngoscope blade integral forming mold comprises a front mold core and a rear mold core which are matched with each other, a mold cavity, a movable cavity and a power cavity are formed when the front mold core and the rear mold core are closed, the mold cavity and the movable cavity are communicated through a moving groove, and an arc-shaped loose core matched with the mold cavity is slidably connected in the movable cavity; the arc-shaped loose core enters the mold cavity to achieve integral forming of the laryngoscope blade, the arc-shaped loose core is contained in the movable cavity to facilitate demolding of the laryngoscope blade, the integral forming mold for the laryngoscope blade achieves forming of a complete laryngoscope blade product through a vector sliding method of the arc-shaped loose core, the ultrasonic welding step is reduced, and the production efficiency is improved. And due to the integrated design, the appearance hardness, the waterproofness and the stability of the laryngoscope blade are improved.

The invention relates to the technical field of optical fiber preparation, and provides a preparation method of an optical fiber preform, which comprises the following steps: respectively fixing a head tube and a tail tube at two ends of a deposition lathe through a clamp; the deposition pipe is placed between the head pipe and the tail pipe, at least one end of the opposite ends of the head pipe and the deposition pipe and / or at least one end of the opposite ends of the deposition pipe and the tail pipe are heated, the to-be-flared heating ends of the head pipe, the deposition pipe and the tail pipe are subjected to flaring operation through a flaring component, and the flaring part of the flaring component is in a cone shape; welding the opposite ends of the head pipe and the deposition pipe and the opposite ends of the tail pipe and the deposition pipe; then core layers are formed on the head pipe, the deposition pipe and the tail pipe, and a core rod is formed after rod shrinkage; and sleeving the core rod to form the optical fiber preform. According to the invention, the formed flaring end is good in symmetry, so that the welding concentricity of the head pipe, the deposition pipe and the tail pipe is improved, the deposition of a core layer is uniform, and the quality of the optical fiber preform is improved.