Abstract: The invention concerns a process for the production of a personalised, optically variable element having polarising properties, and a film system for carrying out the process. To produce the optically variable element a film body which comprises two or more layers and which has an LCP layer comprising a liquid crystal material is applied to a substrate body which has an orientation layer for the orientation of liquid crystals. The orientation layer of the substrate body is personalised prior to application of the film body to the substrate body. The film body is then applied to the personalised orientation layer of the substrate body in such a way that the LCP layer of the film body lies on the personalised orientation layer of the substrate body for then orientation of liquid crystals of the LCP layer of the film body.

Abstract: High performance microlens arrays are fabricated by (i) depositing liquid on the hydrophilic domains of substrates of patterned wettability by either (a) condensing liquid on the domains or (b) withdrawing the substrate from a liquid solution and (ii) optionally curing the liquid to form solid microlenses. The f-number (f#) of formed microlenses is controlled by adjusting liquid viscosity, surface tension, density, and index of refraction, as well as the surface free energies of the hydrophobic and hydrophilic areas. The f-number of formed microlenses is also adjustable by controlling substrate dipping angle and withdrawal speed, the array fill factor and the number of dip coats used. At an optimum withdrawal speed f# is minimized and array uniformity is maximized. At this optimum, arrays of f/3.48 microlenses were fabricated using one dip-coat with uniformity better than ?f/f˜±3.8% while multiple dip-coats permit production of f/1.38 microlens arrays and uniformity better than ?f/f˜±5.9%.

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: A curable composition is provided comprising an oligomer having a plurality of pendent and/or terminal ethylenically unsaturated, free-radically polymerizable functional groups, a free-radically polymerizable crosslinking agent, and/or a diluent monomer, and a photoinitiator. The composition, when cured, is non-yellowing, exhibits low shrinkage and low birefringence making it suitable for many optical applications such as optical lenses, optical fibers, prisms, light guides, optical adhesives, and optical films.

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: This invention provides for an ophthalmic lens mold with at least one portion of the lens mold including multiple voxels of polymerized crosslinkable material. In addition, the present invention provides for apparatus for generating an ophthalmic lens mold including multiple voxels of polymerized crosslinkable material.

Abstract: The present invention relates to a mold half for making an ophthalmic lens, in particular a contact lens, wherein the mold half comprises a release sheet removably arranged on the mold surface of said mold half to separate a lens forming material from the mold surface, as well as to a method for applying a removable mold release sheet to said mold half. The mold half of the invention comprises a vacuum means to removably attach said release sheet to said mold surface, and preferably the mold half further comprises a pinch-off rim for forming the edge of said ophthalmic lens.

Abstract: The invention relates to a method for producing structured optical materials. It also relates to a device for producing structured optical materials, and to use of the method. In order to create a novel, continuous method for the production of structured optical materials, which is more economical than the known production method, it is proposed within the scope of the invention that optical material be applied to a carrier, a carrier or protective film be laminated onto the optical material, the resulting laminate be exposed to light and thereby structured, and subsequently a delamination of at least one of the films be performed.

Abstract: Described herein are devices for producing ophthalmic lenses including at least one mold half defining an optical surface where the mold half is made from a polymer that includes an aromatic polyimide, a polyphenylene, or a combination thereof. The devices exhibit numerous advantages including, but not limited to, good chemical resistance, durability, machineability, and UV absorbing properties. Also described are methods for producing ophthalmic lenses using the devices described herein. The ophthalmic lenses produced with the devices described herein exhibit excellent optical properties when compared to lenses produced from conventions molds.

Abstract: An element includes a first resin layer and a second resin layer disposed between a first glass lens substrate and a second glass lens substrate, a boundary surface between the first resin layer and the second resin layer having a diffraction grating shape including a plurality of inclined surfaces and wall surfaces. The second resin layer is composed of a fluororesin in which fine metal oxide particles are dispersed. Since a refractive index distribution easily occurs in this material during curing by application of ultraviolet light, by applying ultraviolet light substantially perpendicular to the inclined surfaces of the diffraction grating shape, a refractive index distribution is formed in the thickness direction perpendicularly to the inclined surfaces.

Abstract: Methods and apparatus are provided for making an ophthalmic lens. Apparatus are provided for filling contact lens shaped cavities of contact lens molding assemblies. Methods of coupling and fusing contact lens mold sections are also provided and generally include providing first and second mold sections which, when coupled together, are effective to form a lens-shaped cavity and contact regions between the mold sections. One or both of the mold sections may include one or more recessed regions or projections which provide areas of non-fusion and areas of fusion, respectively, when the mold sections have been filled with a contact lens precursor material and are fused together, for example, by focused ultrasound energy.

Abstract: A method and apparatus used for forming a lens master for forming lenses on a wafer. The method includes using an inverted lens pin mold in conjunction with a dispense method to create both concave and convex lens masters for making lens stamps containing lens-shaped cavities. The lens-shaped cavities are used to imprint a plurality of lenses into a curable material.

Abstract: A method and stamp for forming lenses on a wafer. The stamp includes a mask arranged on a substrate and aligned with a plurality of lens-shaped cavities. The lens-shaped cavities are used to imprint a plurality of lenses into a curable material. The lenses are cured through the mask using radiation. The lenses are separated from the stamp and the uncured material is removed.

Abstract: An optical element molding die is designed for molding an optical element having a concave-convex structure. The optical element can be manufactured by a wet system that enables element formation over a large area and a curved surface, without using a lithographic process, and is advantageous in terms of mass production and equipment cost. The optical element molding die includes a substrate having a surface with a negative standard electrode potential in the oxidation reaction and an anodic oxidation layer provided on the substrate. A protective layer with the positive standard electrode potential is provided between the substrate and the anodic oxidation layer.

Abstract: An optical element is provided, which is small in distortion when at least three optical members including a resin layer sandwiched by the optical members are cemented together, has a high environmental resistance and optical performance, and has an excellent chromatic aberration correction effect. In the optical element, the resin layer is formed on one of light incident/exit surfaces of a first optical member, and a second optical member is cemented to the resin layer by a bonding material. A condition of ?g<?r is satisfied where ?r indicates an outer diameter of the resin layer and ?g indicates an effective region diameter of a surface of the second optical member which is cemented to the resin layer.

Abstract: This invention discloses methods and apparatus for providing an ophthalmic lens with a microcontroller and an energy source incorporated within the ophthalmic lens. The energy source is capable of powering the microcontroller included within the ophthalmic lens. In some embodiments, an ophthalmic lens is cast molded from a silicone hydrogel.

Abstract: A distributed refractive index lens and method of producing the lens are disclosed. The lens has a plurality of areas having refractive index distributions, and includes a plate-like member containing polysilane. The refractive index distribution of these areas is a distribution that includes a change in a refractive index in a direction parallel to a plane of the plate-like member, and includes a substantial uniform refractive index in a direction perpendicular to the plane.

Abstract: The present invention provides an optical sheet placed in a backlight assembly and the manufacturing method therefor. There are pluralities of first microstructures on the surface of the optical sheet. The optical sheet is mainly made of cured photo resin, for instance: ultraviolet glue. The optical sheet has higher performance and lower cost.

Abstract: This invention discloses methods and apparatus for providing a variable optic insert into an ophthalmic lens. An energy source is capable of powering the variable optic insert included within the ophthalmic lens. In some embodiments, an ophthalmic lens is cast molded from a silicone hydrogel.

Abstract: This invention discloses methods and apparatus for providing a media insert with an energy source to an ophthalmic lens. The energy source is capable of powering a component included within the ophthalmic lens. In some embodiments, an ophthalmic lens is cast molded from a silicone hydrogel and the component includes an electro-optical lens portion.

Abstract: This invention discloses methods and apparatus for providing an ophthalmic lens with an Energy Source capable of powering a component included within the ophthalmic lens. In some embodiments, an ophthalmic lens is cast molded from a silicone hydrogel and a battery in encapsulated within the ophthalmic lens.

Abstract: A method of forming a diffraction grating according to the present invention includes a step of preparing a mold having projections and recesses for forming a diffraction grating, a step of bringing the projections and recesses of the mold into contact with a resin layer in a chamber at a first pressure less than atmospheric pressure, a step of setting a pressure in the chamber to a second pressure more than the first pressure while maintaining the contact, and a step of hardening the resin layer while maintaining the contact between the resin layer and the projections and recesses so as to form a pattern for the diffraction grating on the hardened resin layer. The recesses in the projections and recesses of the mold form a closed pattern in the plane of the mold including the projections and recesses.

Abstract: Disclosed is an external light shielding film. The external light shielding film comprises a transparent substrate; and an external light shielding pattern formed on a surface of the transparent substrate and including a plurality of external light shielding parts. Each of the plurality of external light shielding parts has a polymer resin and at least one color-changeable colorant. The color of the plurality of external light shielding parts may vary according to an external heat source or vary depending on an intensity of an external light source, thereby improving a contrast ratio in a bright room, and a specific color may be visible even when the power of the display apparatus is OFF, thereby achieving an interior decorative effect.

Abstract: A method for manufacturing an optical disc master using an existing exposure system, and a method for manufacturing an optical disc having higher recording capacity. The method for manufacturing an optical disc, using a master to produce the optical disc having an irregular pattern thereon, the master being produced by the steps of forming a resist layer composed of a resist material including an incomplete oxide of a transition metal such as W or Mo on a substrate, the oxygen content of the incomplete oxide being smaller than the oxygen content of the stoichiometric composition corresponding to a valence of the transition metal; selectively exposing the resist layer with laser according to a recording signal pattern; and developing the resist layer to form the predetermined irregular pattern.

Abstract: The present invention relates to a radiation curable resin composition which comprises epoxy (meth)acrylate, a monofunctional (meth)acrylate, a bifunctional (meth)acrylate having a specific structure, and a bifunctional (meth)acrylate obtained from an aliphatic dihydric alcohol having an oxyalkylene structure and (meth)acrylic acid and further contains a thermoplastic resin, thereby causing satisfactory adhesion to plastic substrates, sufficient shape retention, and excellent shape recovery properties, and satisfaction in moldability including casting efficiency and shape reproducibility, as well as a high refractive index and appropriateness for use as a lens sheet.

Abstract: An Si—O containing hydrogenated carbon film as an optical film has a refractive index in a range from at least 1.48 to at most 1.85 for light of 520 nm wavelength and an extinction coefficient of less than 0.15 for light of 248 nm wavelength, wherein the refractive index and the extinction coefficient are decreased with energy beam irradiation. By utilizing such an Si—O containing hydrogenated carbon film, it is possible to provide various types of optical elements and an optical device including the same.

Abstract: Provided are diffuser, method of manufacturing same, and liquid crystal display device employing the diffuser. Liquid crystal display device includes: backlight unit; liquid crystal panel on which image is formed by using light emitted by backlight unit, and comprising: color filter comprising plurality of pixels each of which comprises plurality of subpixels that are alternately arranged and transmit light in different wavelength bands; and liquid crystal layer whose transmittance is adjusted under electrical control; and diffuser disposed on a top surface or a bottom surface of the liquid crystal panel and comprising diffusing areas and transparent areas which alternate with each other at intervals corresponding to the width of the subpixels, wherein the liquid crystal layer comprises liquid crystal areas corresponding to the diffusing areas and liquid crystal areas corresponding to the transparent areas and the transmittances of the liquid crystal areas are adjusted according to the subpixels.

Abstract: A process for the manufacture of an ophthalmic lens, e.g. a contact lens, comprises the steps of: dispensing a polymerizable and/or cross-linkable starting material comprising a photoinitiator into a mold (2, 20,21) and exposing the starting material in the mold (2,20,21) to UV-light in order to cause polymerization and/or cross-linking of the starting material in the mold so as to form the ophthalmic lens. Exposing the starting material to UV-light is performed by using at least one solid-state UV-light emitting die (80) or UV-LED (1) to the emitted light of which the starting material contained in the mold (2,20,21) is exposed.

Abstract: The present invention relates to a resin composition for optical components, which is an ultraviolet-curable transparent resin composition used as a material for an optical component, in which the resin composition includes (A) an epoxy resin having two or more epoxy groups in one molecule thereof, (B) an oxetane compound having one or more oxetanyl groups in one molecule thereof and (C) a photo-acid generator, and in which the component (C) is contained in an amount of 0.01 to 2.0 parts by weight based on 100 parts by weight of a total amount of the components (A) and (B). The present invention also relates to an optical component obtained by using the resin composition for optical components, and a production method thereof.

Abstract: Systems and methods of manufacturing ophthalmic lenses, for example, silicone hydrogel contact lenses, are provided. The present systems and methods provide certain amounts of ultraviolet light to contact lens mold assemblies that comprise a silicone hydrogel precursor composition. For example, the systems and methods may provide ultraviolet light at an intensity from 20 ?W/cm2 to 4000 ?W/cm2. The ultraviolet light intensity can be provided as substantially uniform levels to provide consistent curing for batches of silicone hydrogel contact lenses.

Abstract: When manufacturing an optical recording medium by forming a resin layer on a surface of a substrate and then forming a center hole that passes through the substrate and the resin layer, a method of manufacturing an optical recording medium according to the present invention forms the center hole by forming, in the resin layer, a circular cut with a larger diameter than the center hole so as to surround a formation position of the center hole and then pressing in a punching blade for forming the center hole from a rear surface side of the substrate. By doing so, detachment of the resin layer and the production of burrs at or near the center hole can be avoided while reducing the manufacturing cost.

Abstract: A process for fabricating a molding stamp mainly includes the steps of: (1) attaching a framework onto a substrate, the framework defining a number of through holes therein so that the framework and the substrate cooperatively define a number of molding cavities; (2) applying a UV curable resin in one of the molding cavities; (3) molding the UV curable resin in the one of the molding cavities using a printing stamp having a predetermined microlens pattern; (4) curing the UV curable resin to form a microlens unit; (5) removing the printing stamp; (6) repeating the steps (2) through (5) to form a number of microlens units on the substrate; (7) removing the framework from the substrate; (8) applying a thermosetting resin on the substrate to cover the microlens units; (9) curing the thermosetting resin to form the molding stamp; and (10) separating the molding stamp from the substrate.

Abstract: A method for manufacturing an ophthalmic lens comprising introducing a volume of photocurable lens material into a container, wherein said container comprises a mold surface. The method further comprises creating a digital 3-D mathematical model defining corrective needs of an eye and projecting programmed patterns of UV light through said mold via a pattern generator, wherein said programmed patterns of UV light cure said photocurable lens material into a lens shape defined by said mold surface and said digital model.

Abstract: A method of manufacturing a synthetic resin lens, comprising: adjusting a degree of change in transmittance of a lens member made of synthetic resin for a blue violet laser beam with accumulated application of the blue violet laser beam, by applying to the lens member an electromagnetic wave shorter in wavelength than the blue violet laser beam.

Abstract: An optical diffraction grating (10) is produced by providing a mold (50) having a plurality of inclined grooves (58), which have a small clearance angle (?). The mold (50) is covered by a curable material (M1). Said material is subsequently cured, i.e. hardened, and separated from the mold (50) to provide the diffraction grating (10). The inclined orientation of the grooves (58) allows expansion or contraction of the grating during the curing and separation steps such that the probability of mold breakage may be reduced. The inclined orientation of the grooves may also facilitate the separation of the grating (10) from the mold (50).

Abstract: A lens module and a method for fabricating the same are disclosed. The module comprises a substrate and a lens structure. The substrate comprises a through-hole therein. The lens structure is embedded in the through-hole.

Abstract: A method for producing a polymer optical waveguide including: (1) preparing a template that is made of a template forming curable resin and has a concave portion, (2) applying an ozone treatment or irradiating light having a wavelength of 300 nm or less to at least one of a surface of the template having the concave portion and a core formation surface of a cladding film substrate, (3) bringing the cladding film substrate into close contact with the template, (4) filling a core forming curable resin into the concave portion of the template with which the cladding film substrate is in close contact, (5) curing the filled core forming curable resin to form a core, (6) removing the template from the cladding film substrate, and (7) forming a cladding layer on the cladding film substrate on which the core has been formed.

Abstract: A method for manufacturing a silicon hydrogel gel contact lens having a hydrophilic surface is provided, whereby a hydrophilic biomedical material such as, HEMA, GMA, GMMA, NVP, MAA, MMA, PVA, PU, HA, collagen, chitosan, polydextrose, etc. is combined with a surface of a soft silicone gel or a silicone hydrogel material to form a sandwiched structure of a body of a contact lens. With this method, the surface of the soft silicone gel or the silicone hydrogel material can be completely coated with the hydrophilic biomedical material, so that a hydrophobic silicone dry spot on the surface resulting from a hydrophobic silicone component in the soft silicone gel or silicone hydrogel material is completely coated. Thus, a contact lens having a completely hydrophilic surface and a high oxygen-permeability is formed, which can be more comfortably worn for a longer time.

Abstract: A method of producing a polymer optical waveguide, the method including preparing a core-forming mold having a concave portion corresponding to at least one optical waveguide core, bringing a concave side of the core-forming mold into close contact with a flat substrate, filling a core-forming curable resin into the concave portion by suction and/or by utilizing a capillary phenomenon, curing the core-forming curable resin to form an optical waveguide core, and removing the optical waveguide core from the core-forming mold and the flat substrate.

Abstract: Disclosed is a method of forming a coated optical element. The method includes providing a mould assembly having opposed mould sections and applying a UV-curable hard coat monomer composition to the casting face of at least one of the mould sections to form a hard coat monomer layer. The hard coat layer is irradiated with UV radiation under conditions to form a partially cured hard coat layer. The assembled mould is filled with a high index optical element precursor material the optical element precursor material and the partially cured hard coat layer are cured to form a high index optical element having a hard coat.

Abstract: Method for manufacturing an ophthalmic lens (101, 102, 103, 104) comprising: a) providing a sample (100) with a layer (120) of a photoactive material which can be selectively activated to vary its index of refraction; b) exposing the layer of the photoactive material to activation radiation (44) and “in situ” providing the sample with a measuring radiation (76) and measuring the resulting refractive index local value of the sample, wherein the activation radiation (44) wave length differs of the measuring radiation (76) and wherein the activation radiation or the measuring radiation is reflected on the sample by a beam splitter (60) and the measuring radiation or the activation radiation respectively is transmitted through the same beam splitter (60) on the sample; c) repeating step b) if necessary and up to a desired activation level.

Abstract: A contiguous microlens array including a plurality of contiguous microlenses is described. Each microlens has substantially circular contours at the heights higher than the connection sections of the microlens with neighboring microlenses, and has substantially partially circular contours at the heights on the connection sections adjacent to the neighboring microlenses. The shape of the curved surface of a microlens in the microlens array is selectively adjusted according to its position in the array and the incident angle of light incident thereto.

Abstract: A contact lens fabrication method of fabrication a contact lens by means of: pressing a male molding block of a supplementary tool into a cavity of a mold to squeeze a contact lens material into shape and to simultaneously cut off an excessive part of the contact lens material from a contact lens by means of a cut angle of sharp edge of the mold, and then curing the contact lens, and then separating the supplementary tool from the mold to have the contact lens be adhered to the surface of the male molding block, and then filling a buffer solution into the supplementary tool to have the contact lens be dipped in the buffer solution after quality examination of the contact lens, and then sealing a sealing film to the supplementary tool to form a finished contact lens product for sale.

Abstract: In a waveguide 10 including a substrate 1, a lower clad 2, an upper clad 3, and a core 4, the outline of a cross section perpendicular to the light propagating direction of the core 4 surrounded by the lower clad 2 has a shape curved with respect to the center of the cross section. The separation in the waveguide is thereby prevented, and the reliability of the optical property is enhanced.

Abstract: The invention provide a method for making silicone hydrogel contact lenses. The method of the invention is characterized by using a solvent mixture including at least one organic solvent which dissolve the polymerizable material in a lens-forming composition and a small amount of water. By having a small amount of water in the lens-forming composition, the mechanical strength of lenses cast-molded from the lens-forming composition can be sufficiently high so that the lenses can survice during mold opening and demolding process, thereby increasing the production yield.

Abstract: An image sensing apparatus with artificial ommatidia includes an imaging optical lens group forming a concave focal surface, an artificial ommatidia unit having a curved top surface corresponding to the concave focal surface and a flat bottom surface, and an image sensor disposed under the artificial ommatidia unit. The artificial ommatidia unit is disposed under the imaging optical lens group so that the curved top surface is coincided with the concave focal surface of the imaging optical lens group. The artificial ommatidia unit having a plurality of artificial ommatidia collects light emitting from the imaging optical lens group, and guides the light to the bottom surface thereof.

Abstract: A system and method for providing photochromic segmented multifocal optical lenses. A latex primer formulation is provided for effectuating adhesion of a surface casting composition onto a lens having a photochromic coating. The method provides efficient, cost effective production of durable photochromic segmented lenses, via secure adhesion of a surface casting layer onto a photochromic substrate while maintaining desirable optical characteristics. A composite optical lens is advantageously formed having a photochromic base lens, a primer composition bonded to a convex surface of said base lens, and a cured casting composition bonded to said primer composition layer. The cured casting formulation includes a segment region to impart multifocal qualities onto the resultant composite optical lens.

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: Provided is an apparatus for fabricating an optical member. The apparatus includes a first roll around which a base film is wound, a second roll around which a base film on which a coating liquid is applied in a predetermined pattern is wound, two or more guide rolls disposed between the first and second rolls to convey the base film, an injection unit for injecting the coating liquid, a pattern molding unit engaged with one of the guide rolls to apply the injected coating liquid on the base film in the predetermined pattern, and a hardening unit for hardening the coating liquid applied on the base film.

Abstract: A manufacturing method of keypad panel includes the steps of preparing a mold formed by assembling a mold base, a transparent mold cavity and a fixed board; coating an ultraviolet curing resin on surfaces of the mold base and the transparent mold cavity of the mold; attaching a transparent or non-transparent plastic thin film onto the ultraviolet curing resin; compressing the ultraviolet curing resin flatly to squeeze the space and eliminate the air remained between the thin film and the ultraviolet curing resin as well as the ultraviolet curing resin and the transparent mold cavity; and performing a light projection to pass light through the transparent mold cavity to cure the ultraviolet curing resin, so as to complete manufacturing the keypad panel.