Abstract: A photochromic plastic object which is composed of a transparent polymeric synthetic resin material, into or onto which at least one substantially mesoporous inorganic host structure is introduced or applied containing one or more embedded organic photochromic dye molecules so as to form a photochromic nanocomposite material. In contrast to prior techniques of adding or applying the photochromic organic dyes to the monomer mixture or prepolymer of a transparent synthetic resin material in a molecular form, in the photochromic plastic article of the present invention color is generated by using the photochromic nanocomposite particles or photochromic nanocomposite structures.

Abstract: A method and apparatus for coating lenses within an injection molding machine having a concave optical insert with a perimeter edge that meets the receiver ring in an annular contact region. A channel is formed throughout the annular contact region. When molding a lens with the apparatus, and according to the method, a closed-loop coating containment lip is formed by the channel. After the lens has solidified and the mold is opened, a predetermined volume of coating solution is applied and the mold is re-clamped. A uniformly thin layer of coating is cured on to the convex lens surface by avoiding coating run off and preventing mold contamination.

Abstract: A method of manufacturing a plastic lens by mixing plural polymerizable components, and immediately after mixing, casting a mixture into a casting mold and conducting polymerization to obtain a molded article. A method of manufacturing a plastic lens by casting a plastic lens starting material liquid flowing out of a casting jig opening into a casting mold and curing the above starting material liquid to form a molded article. A gasket for molding plastic lens comprised of a cylindrical member comprising openings for fitting by insertion of two molds. A casting mold for molding plastic lens, wherein the above molds are detachably held in the above openings of the above gasket so that molding surfaces of the two molds are positioned opposite at a prescribed interval to form a cavity corresponding to a lens shape within the above cylindrical member. A casting jig for plastic lens starting material liquid equipped with a nozzle for casting a plastic lens starting material liquid into the casting mold.

Abstract: An exemplary lens (50) includes a central transparent portion (44) and a peripheral portion (35). The central transparent portion is configured for converging or diverging the light beams transmitted therethrough. The peripheral portion surrounds and extends from the central transparent portion. The peripheral portion is comprised of a shading material.

Abstract: A method of in-mold coating utilizing an injection molding machine oriented to a horizontal parting line. At the beginning of the cycle the mold opens and a charge of liquid coating solution is deposited onto the lower mold insert. A ophthalmic wafer is deposited on the coating to spread it across the insert surface. The mold is closed and a pre-cure phase elapses before the thermoplastic resin is injected into the mold cavity above the wafer. The process provides coated and functionally enhanced lenses upon ejection from the molding machine.

Abstract: An optical element includes: an element body including a resin containing a polymer having an alicyclic structure. The optical element is treated by one of heat treatment and wet-heat treatment for 15 hours or longer at a temperature lower by 10° C. to 30° C. than a glass transition temperature of the resin after being formed by injecting the resin in a mold. The optical element body has a length along an optical axis of the optical element in a range of 0.5 to 3 mm, and a length in a perpendicular direction to the optical axis in a range of 3 to 5 mm.

Abstract: A method for coating hydrogel and silicone hydrogel articles, and articles made by the method, are provided in which the coating is first applied to the molding surface in which an article-forming material will be cured to form the article. The method permits the thickness and uniformity of the coating to be more easily controlled than in known coating methods.

Abstract: A method for manufacturing a hologram projection screen includes the steps of: 1) recording hologram lens information on a photoresist plate; 2) metalizing the photoresist plate that has been exposed, to produce a master nickel plate of a hologram lens array through electroforming and joining; and 3) using the master nickel plate to emboss thermoplastic material, to obtain a screen body, on which the information of the hologram lens array is arranged. The hologram projection screen manufactured by this method can provide a variety of display contents.

Abstract: An object of the present invention is to provide a process for producing a lens suitable in sunglasses or anti-glare spectacles which reduces blue hazard, and by which a blue signal can be confirmed visually, and an optical filter, and an optical article which can cut at least a part of visible light of 380 to 500 nm. The present invention provides a process for producing an optical article, comprising mixing fullerene with a thermoplastic resin powder, pelletizing the mixture using a multiaxial extruder, and injection-molding the pellets, wherein the fullerene is fullerene having a carbon number of 70 or a derivative thereof, and has an average particle diameter of 5 ?m or less.

Abstract: An image pickup lens, comprises sequentially from an object side: an aperture stop, a first lens being a positive meniscus lens which has a convex surface at the object side and a concave surface at an image side opposite to the object side, and a second lens having a concave surface at the object side and an image side surface whose radius of curvature on an paraxial region is infinite or a negative value, wherein the first lens is the second lens and the image side surface of the second lens includes an aspheric surface to make a positive power strong toward a lens peripheral region, and wherein the image pickup lens is made to satisfy the following conditional formulas. 1.55<n1<1.80??(1) 0.4<D3/f<0.6??(2) 40.0<?2<90.

Abstract: A lens module includes: a base unit, a first lens unit, a spacer unit, a second lens unit and a cap unit. The base unit has a first through hole having a first tapered portion. The first lens unit has a first peripheral portion having second and third tapered portions. The second and third tapered portions taper in opposite directions. The second tapered portion is engaged in the first tapered portion of the first through hole of the base unit. The spacer unit has a second through hole having fourth and fifth tapered portions. The fourth and fifth tapered portions taper in opposite directions. The fourth tapered portion is engaged in the third tapered portion. The second lens unit has a second peripheral portion having a sixth tapered portion. The sixth tapered portion is engaged in the fifth tapered portion of the second through hole of the spacer unit.

Abstract: The present invention provides a method for making an ophthalmic device. In particular, the present invention provides a method for production of a contact lens by means of stereolithography. A preferred stereolithography technique is based on polymerization and solidification of a contact lens forming liquid material by actinic irradiation one layer at a time. In addition, the present invention provides systems and methods for making a contact lens for a specific patient based on the prescription.

Abstract: A cast photochromic lens including a photochromic film and a cast resin, curable by heat or radiation.

Abstract: Contact lens curing systems and methods are described. A contact lens curing system includes an oven that has a plurality of curing zones a mold advancement system for moving the contact lens mold assemblies between the plurality of zones and a controlled atmosphere within the curing zones that provides a substantially chemically inert environment in which contact lens precursor materials can be polymerized in contact lens mold assemblies located in the curing zones. Methods of producing contact lenses include curing contact lens precursor materials in contact lens mold assemblies in the lens curing system.

Abstract: A method is provided of forming a biomedical device in a casting mold which has an anterior mold section and a posterior mold section, wherein one of the mold sections includes a plurality of radially extending ribs and the remaining mold section includes an annular shoulder for engaging an outer end of the ribs to define a mold cavity. The method includes engaging the mold sections along a peripheral seal of the mold cavity and a plurality of circumferentially spaced contact points on a shoulder of one of the mold sections. Cured excess material bonds to the ribs of the one mold section and provides repeatable retention and location of the excess material after formation of the biomedical device.

Abstract: A method for producing surface convexes and concaves enabling easy and highly precise formation of desired convex and concave shapes using a photomask is provided. A mask member having light transmitting sections and non-light transmitting sections is disposed over one side of a photosensitive film consisting of a photosensitive resin composition with an interval with respect to the photosensitive film, light is irradiated from a light source disposed on the side of the mask member to subject the photosensitive film to light exposure through the light transmitting sections of the mask member, and exposed portions or unexposed portions of the photosensitive film are removed by development to produce convexes and concaves on the photosensitive film in shapes determined by shapes of the exposed portions or unexposed portions.

Abstract: A method for laminating an optical assembly and the optical assembly formed thereby. An ultra thin lens is injection molded and may include a bifocal feature. A support lens, e.g. of the single vision type, is provided with a photochromic coating. A flexible two stage compound application process prepares the two lenses for lamination.

Abstract: A microlens transcription molding roller used for transcription-molding a plurality of microlenses on a sheet includes a plurality of microlens molding surfaces arrayed on an outer circumference of the roller along one spiral around an axis of the roller at a constant interval.

Abstract: A method of making an ocular lens device (and resulting lens device) from a polyolefin copolymer material having a crosslinking component, wherein the material is processed to remove unwanted reaction byproducts that can contribute to reduced transparency of the polyolefin copolymer material in the ocular environment of the eye.

Abstract: A method for laminating a functional film on to a thermoplastic injection molded lens. A thermally curable glue is deposited on the lens while it is still in the mold. A functional film is introduced and the mold is closed again. The heat from the mold and the clamping pressure thermoform the film and cure the glue, in a lamination process. A functionally enhanced lens having a film intimately laminated on to one side.

Abstract: A protective film (10) is eccentrically adhered to a concave-side transfer surface (3b) of a first mold (3) which is used in a plastic lens forming mold, and part (10a) of the peripheral portion of the protective film is projected laterally from the mold (3). The protective film (10) comprises a film layer with an outer diameter smaller than that of the first mold (3), and an adhesive layer with a relatively low adhesive strength which is formed on one surface of the film layer.

Abstract: Contact lens delensing methods are described, and the present delensing methods include using a gas to facilitate separation of a polymerized contact lens product from a contact lens mold member. The contact lens mold member is compressed to deform a portion of the mold member, and gas, such as air, is directed toward the polymerized contact lens product in contact with the portion. The contact lens mold member can be compressed as the mold member, and lens product, rotate. A vacuum device can be used to separate the polymerized contact lens product from the contact lens mold member after compressing the portion of the mold member and directing the gas towards the mold member. Delensing systems used to practice the present methods are also described.

Abstract: An exemplary optical plate includes a first transparent layer, a second transparent layer and a light diffusion layer. The light diffusion layer is between the first and second transparent layers. The light diffusion layer, the first and second transparent layers are integrally formed. The light diffusion layer includes a transparent matrix resin and a plurality of diffusion particles dispersed in the transparent matrix resin. Both the first and second transparent layers define a plurality of spherical protrusions on an outer surface thereof distalmost from the light diffusion layer respectively. A method for making the optical plate is also provided. In addition, a direct type backlight module using the optical plate is also provided.

Abstract: A method of constructing a curved optical device includes assembling of at least one cell having opposed flexible substrates with a controlled distance therebetween to form a gap adapted to receive a fluid. The process continues by holding only a portion of the cell in a fixture, positioning a curved mold surface proximal the cell and heating at least one of the curved mold surface and cell. Next, the cell is conformed to the mold surface so that the cell substantially retains the curved shape when the heat and the mold surface are removed.

Abstract: A polarizing plastic lens comprising a polarizing film with low tendency to detachment from an optical resin layer. There is provided polarizing plastic lens comprising polarizing film constituted of a polyvinyl alcohol resin. Two optical resin layers of different thicknesses may be disposed on both surfaces of the polarizing film. The optical resin layers are formed by polymerizing a polymerization raw material composition in contact with the polarizing film. The polymerization raw material composition contains as one main component an isocyanated or isothiocyanated compound. The iscocyanate or isothiocyanate functional group reacts with the hydroxyl of polyvinyl alcohol resin of polarizing film to thereby form an urethane bond or thiourethane bond, so that the optical resin layers are strongly unified with the polarizing film.

Abstract: Method of manufacturing a lens assembly by means of a replication process, wherein the following steps are carried out i) introducing a first, liquid, UV curable composition (2) into a first mould (1) provided with regularly spaced-apart cavities (6), ii) curing said first composition by UV radiation so as to obtain a first lens element comprising lenses arranged beside each other, wherein the surface of the obtained lens element is the negative of that of the cavities, in) applying a second, liquid, UV curable composition (5) to the first composition cured in step ii), iv) placing a second mould (4) on the second composition (5) applied in step iii), which second mould is provided with regularly spaced-apart recesses (7), in such a manner that said recesses will fill with the second composition, v) curing the second composition by UV radiation so as to obtain a second lens element comprising lenses arranged beside each other, wherein the surface of the obtained lens element is the negative of that of the rec

Abstract: The present invention is to provide a method for easily evaluating whether or not a relative positional shift generated between both surfaces of a bi-aspherical type lens is within an allowance during the manufacturing process of the bi-aspherical type lens. According to the evaluation method of the progressive-addition lens of the present invention, first, powers of the progressive-addition lens at a plurality of are measured to obtain an actually measured power distribution. Next, a comparison power distribution created based on the actually measured power distribution and a defective power distribution prepared in advance are compared with each other to perform similarity search between the both.

Abstract: A lens has a flange part at the outer periphery of its surface. A flange surface of the flange part is higher than the lens surface. The flange surface has a marking to identify a production jig, for example.

Abstract: A corneal cover or corneal implant to be placed within or onto the surface of the cornea is made of bony fish scales and a contact lens is made of bony fish scales.

Abstract: Compositions and methods for improving demolding polar resin molds used in the production of silicone hydrogel materials are described. The present compositions and methods include the use of one or more reactive demolding agents. The reactive demolding agents react with components of a polymerization mixture to produce a polymerized silicone hydrogel device containing a reactant product of the demolding agent and the other components of the polymerization mixture. Polar resin molds used during the polymerization of the polymerization mixture are more easily separated than substantially identical molds used in the polymerization of a substantially identical material without a reactive demolding agent. The present compositions and methods may be used in the manufacture of silicone hydrogel lenses, such as contact lenses. The demolding aids may also be useful as delensing aids.

Abstract: An exemplary imprint mold includes a surface, a plurality of molding portions arranged on the surface and a plurality of contraposition symbols arranged around the molding portions. The contraposition symbols include two first contraposition symbols arranged parallel to a first axis, two second contraposition symbols arranged parallel to a second axis, and four third contraposition symbols. The first axis and the second axis are perpendicularly intersecting at a geometrical center of the surface. Any two selected of the four third contraposition symbols are symmetrically positioned relative to each other about one of the first axis, the second axis, and the geometrical center.

Abstract: Disclosed is a method for producing a plastic lens having reflow heat resistance at 260° C., which is characterized in that a photosensitive resin composition containing a specific resin and a photopolymerization initiator is molded into a lens shape. The resin is obtained by mining one or more compounds (a) selected from the group consisting of (CH3O)3—Si—(CH2)3—O—CO—C(CH3)?CH2, (CH3O)3—Si—(CH2)3—O—CO—CH?CH2, (CH3O)3—Si—(CH2)x—CH?CH2 (wherein X is 1 or 2), (CH3O)2—Si(CH3)(CH2)3—O—CO—C(CH3)?CH2, (CH3O)2—Si(CH3)(CH2)3—O—CO—CH?CH2 and (CH3O)2—Si(CH3)—(CH2)x—CH?CH2 (wherein X is 1 or 2) with a compound (b) represented by (C6H5)2—Si—(OH)2 such that 50-150 moles of the compounds (a) is mixed per 100 moles of the compound (b), and then polycondensing the mixture at 40-15° C. for 0.1-10 hours in the presence of a catalyst.

Abstract: A 3D circular polarization apparatus comprises first and second acrylic layers, a quarter wave layer positioned between the first and second acrylic layers, and a linear polarizer layer adjacent to the quarter wave layer and positioned between the first and second acrylic layers. The 3D polarization apparatus may be produced by adhering a first acrylic layer to a first surface of a quarter wave layer, adhering a second surface of the quarter wave layer to a first surface of a linear polarizer layer, and adhering a second surface of the linear polarizer layer to a second acrylic layer to form the 3D polarization apparatus.

Abstract: A hybrid lens is provided in which a plastic lens made from an ultraviolet curing resin is affixed to a ceramic lens which uses as a glass material a light transmitting ceramic having a permeability of 70% or larger in a visible radiation range and a particle diameter of 40 micrometers to on the order of 120 micrometers and on which chipping flaws having a depth of 50 micrometers to on the order of 60 micrometers are formed.

Abstract: A zoom lens ZL installed in a single-lens reflex digital camera 1 and the like includes, in order from an object side, a first lens group G1 having positive refractive power, a second lens group G2 having negative refractive power, and a rear lens group GR having positive refractive power. The second lens group G2 includes at least one positive lens and a negative lens disposed adjacent to the object side of the positive lens having largest refractive power among the positive lenses. Each distance between lens groups varies upon zooming from a wide-angle end state and a telephoto end state. Thereby providing a zoom lens having excellent optical performance, an optical apparatus equipped the zoom lens, and a method for manufacturing the zoom lens.

Abstract: Systems and methods of manufacturing ophthalmic lenses, for example, soft, extended wear silicone hydrogel contact lenses, are provided. The systems generally include a housing having an illuminated chamber, a carrier, for example a tray, movable in the illuminated chamber from an inlet portion to an outlet portion of the housing, and the tray configured to carry a plurality of contact lens molds. Polymerizing light energy is provided, for example, by multiple fluorescent lamps, to the molds at an intensity effective to at least initiate polymerization of a monomer composition located in each of the molds. The light may be illuminated onto two opposing sides of each mold. In some cases, the intensity of the light provided to one side of the mold may be different to the light intensity provided to the opposing side of the mold. In addition, the system may include features that are effective to provide for an instantaneous start and an instantaneous end to the light induced cure of the monomer in the molds.

Abstract: Contact lens molds and systems and methods for producing contact lens molds are described. The contact lens mold sections include two optical quality surfaces, a flange circumscribing at least a portion of the two optical quality surfaces, and an elongate member extending from the flange. Two mold sections can contact one another to form a mold assembly having a contact lens shaped cavity. The mold sections are structured to form a contact lens having an edge that does not require further physical modification before placement on an eye. Systems and methods are described which direct a molten polymeric material into cavities corresponding to the mold sections.

Abstract: The present invention relates to a method for pattern formation and an apparatus for pattern formation, the method comprising: applying, between partition lines for pattern formation formed on a surface of a base member, a resin composition for pattern formation having small compatibility or substantially no compatibility with a resin forming the partition lines for pattern formation, in a state in which the surface of the base member with the partition lines for pattern formation formed whereon is placed face down; maintaining the state in which the resin composition for pattern formation is held on the surface of the base member that is placed face down in order to form the resin composition for pattern formation applied between the partition lines for pattern formation into a downward convex shape; and curing the resin composition for pattern formation that is formed into the downward convex shape in order to form a pattern.

Abstract: Method of making eyeglass lens are disclosed where the lens are made of layers which include an outer, convex hard coating, a layer of hard epoxy, a PVA film wherein the color is dipped in water without color dye, a layer of soft epoxy, a base material, and an inner, concave hard coating. Other methods configuration of lens also include a camouflaged patterned lens, a layer of hard epoxy, a polyurethane mixture, a PVA film wherein the color is dipped in water without color dye, a layer of soft epoxy, a base material, and an inner, concave hard coating.

Abstract: The invention relates to a method for producing an optical lens element (2), particularly for illumination purposes, particularly for producing a headlight lens (2) for a vehicle headlight, particularly for a motor vehicle headlight (1), wherein a blank (136) made of a transparent plastic is shaped in an injection molding tool (131, 132) by means of an injection molding method, and the blank (136) is subsequently pressed into the lens element (2) by means of a final shape mold (140, 141, 142), particularly in a polished manner.

Abstract: An article of polarized eyewear has a lens with a first substrate lens material transparent to visible light and a pattern of elongated structures formed from at least a second material having a complex index of refraction that is deposited onto a curved surface of the first substrate lens material. The pitch between adjacent elongated structures is less than 300 nm and the width of each elongated structure is less than 90% of the pitch.

Abstract: A method for making an optical element comprises polymerizing a first monomer to form a first polymer, the first polymer having a spatially varying degree of cure that provides a predetermined refractive index profile; and polymerizing a second monomer in the presence of the first polymer to form a second polymer intermixed with the first polymer, the second polymer stabilizing the first polymer and the refractive index profile.

Abstract: The present invention provides a method of manufacturing a lens, in which the method includes exposing a photoresist to light using a phase shift mask. Here, the phase shift mask includes layout portions respectively corresponding to pixels and lens, in which each of the layout portions has: a light-blocking portion which has a shape of a substantially circle or a substantially concentric zone; a light-transmitting portion which has a shape of a substantially circle or a substantially concentric zone; a phase shift portion which has a shape of a substantially circle or a substantially concentric zone; and a light-blocking frame. Furthermore, the light-transmitting portion, the light-blocking portion and the phase shift portion are arranged alternately so as to form concentric circles, and the light-blocking frame corresponds to a whole or a part of a perimeter of the lens.

Abstract: A method, for producing an optical member, includes attaching a holding member, which is used integrally with a lens, to the lens so that the holding member is brought into contact with a periphery of the lens to hold the lens, and then forming an optical thin film on a surface of the lens by a spin coating to obtain the optical member.

Abstract: The invention provides methods of manufacturing toric lenses, apparatuses useful in the method of the invention, and lenses produced according to the method in which method the position of one mold half in relation to its complementary mold half is more precisely controlled so that tilting and rotation of the mold halves in relation to each other is substantially eliminated.

Abstract: A device for forming optical lenses includes a base, a driving mechanism mounted on the base, a controller connected to the driving mechanism and a roll forming die. The controller is configured for controlling the driving mechanism. The roll forming die includes a roller, a number of mold cores attached to the roller, and a molding material container disposed on the base and spaced with the roller. The roller is mechanically coupled to the driving mechanism such that the roller can be driven to rotate by the driving mechanism, the roller, the mold cores and the molding material container are arranged to cooperatively form workpieces. A number of mounting holes are defined in the roller; each of the mold cores is mounted in a corresponding mounting hole. The device for forming optical lenses can reduce internal stress of produced optical lenses.

Abstract: The present disclosure provides an apparatus and method for manufacturing polymer solar cells. The apparatus is designed to adapt many techniques used in the compact disc manufacturing industry to the manufacture of polymer solar cells.

Abstract: The present invention provides a method and a formulation for consistently producing a silicone hydrogel material having relatively high oxygen permeability, relatively high ion permeability, and low modulus, and contact lenses prepared from a formulation of the invention or made of a silicone hydrogel material of the invention.

Abstract: The invention relates to a method and an apparatus for manufacturing an optical device by means of a replication method comprising the steps of: a) filling a gap between a substrate and a mold with a liquid light-transmissive polymeric material, b) curing the polymeric material to obtain a replica layer, c) removing the mold. In order to manufacture optical devices, such as lenses having a larger NA-value, it is proposed according to the present invention that the replication method is repeated at least two times while using the same or different molds, and that the substrate, together with one or more replica layers obtained during one or more previous runs of the replication method, is used as a substrate for the next run of the replication method.

Abstract: A method for producing a mold for a zonal optical element including forming a circular portion where, while rotating a work around a rotation axis corresponding to the optical axis as a center, a tip is relatively moved relative to the work to form the circular portion at the mold side corresponding to the circular portion on the processing surface of the work perpendicular to the rotation axis; forming a zonal surface where the tip is relatively moved relative to the work to form a zonal surface at the mold side corresponding to the zonal surface; and forming a corner portion between the boundary portion at the mold side and the zonal surface at the mold side wherein a raked surface of the tip is in contact with a portion corresponding to the boundary wall surface.