Abstract: The present invention relates to a TiO2-containing quartz glass substrate for an imprint mold having a main surface and a side surface, in which the side surface has an arithmetic average roughness (Ra) of 1 nm or less, and the side surface has a root mean square (MSFR_rms) of concaves and convexes in the wavelength region of from 10 ?m to 1 mm being 10 nm or less.

Abstract: A method for injection molding of plastic-material lenticular bodies for lights; of motor vehicles and similar, the method comprising the steps of coupling a punch half-mold with a first matrix half-mold so as to define, on the surface of the punch half-mold, a first closed cavity that copies in reverse the shape of the first plastic-material sheet; filling said first cavity with a first plastic polymer in a liquid state, injecting the first plastic polymer in the first cavity from an injection point located at said first segment of the peripheral edge of the first plastic-material sheet; and finally separating, after the first plastic polymer has solidified to form the first plastic-material sheet, the punch half-mold from the first; matrix half-mold maintaining the first plastic-material sheet still on the surface of the punch half-mold.

Abstract: The present invention relates to a polyurethane prepared from a mixture comprising: (a) at least one polyethylene glycol; (b) at least one di-isocyanate; (c) at least one polydialkyl siloxane diol; and (d) at least one diol of formula (I) wherein n is an integer from 1 to 25; wherein the polyethylene glycol, di-isocyanate, polydialkyl siloxane diol and diol are reacted under substantially anhydrous conditions. Further aspects of the invention relate to a process for preparing a polyurethane.

Abstract: Systems and methods are disclosed that provide an infrared-transmissive dome, such as for infrared imaging applications. For example, an infrared-transmissive dome, for an embodiment, includes a main body providing a hollow, hemispherical-shaped dome; wherein the main body is made of an ultra-high molecular weight or a very-high molecular weight polyethylene material; and wherein the main body has a wall thickness equal to or less than approximately 0.012 inches to allow infrared transmittance greater than approximately sixty five percent through the main body for infrared imaging in a wavelength range of approximately three to fourteen micrometers.

Abstract: There is provided an injection mold to manufacture an injection-molded product formed of a molten resin that is injected into a molding space and is solidified. The injection mold includes an insert that forms a high quality required surface corresponding to a high quality required surface of an injection-molded product. The high quality required surface forming insert includes a first insert member corresponding to a high surface accuracy required portion in the high quality required surface, and a second insert member corresponding to a high surface accuracy not-required portion in which the surface accuracy that is required is lower than that of the high surface accuracy required portion in the high quality required surface and which has thermal conductivity lower than that of the first insert member.

Abstract: A hard coating composition including at least the following components (A) to (E): Component (A): A poly(methyl)glycidyl ether compound derived from a chain aliphatic polyol or a chain aliphatic polyether polyol, which may or may not contain a hydroxyl group, Component (B): A silsesquioxane compound containing a cationic polymerizable group, Component (C): A silicate compound, Component (D): A silane compound containing a cationic polymerizable group, or a partial condensed compound thereof, or a mixture thereof, and Component (E): A cationic photopolymerization initiator, wherein the composition includes 5 to 40 parts by weight of the component (A), 60 to 95 parts by weight of the total of the components (B), (C) and (D), and 0.1 to 10 parts by weight of the component (E), each based on 100 parts by weight of the total of the components (A) to (D).

Abstract: The subject invention relates to a method of preparing a biocompatible polymer comprising epsilon-linked L-lysine having free alpha-amino and carboxy functions. The invention further encompasses the resulting biocompatible polymer and articles made from the polymer, in particular contact and intraocular lenses.

Abstract: The invention relates to a device for producing custom-made spectacles comprising a scanning unit and a producing unit, wherein the scanning unit is configured for scanning at least a part of a customer's face and wherein the producing unit comprises at least a printing device for printing a spectacle lens and/or a spectacle frame, wherein the printing device is configured for printing the spectacle lens and/or the spectacle frame in dependency of scanning data of the scanning unit.

Abstract: To provide a plastic optical element with reduced birefringence. An angle formed by a line segment that connects a gate corresponding part of a core lens to the center of the core lens and a line segment that connects a gate corresponding part of a molded portion to the center of the core lens is greater than or equal to 90 degrees and is less than or equal to 180 degrees when viewed in a direction along the optical axis of the plastic optical element.

Abstract: The present invention lies in the field of the industrial manufacturing of cast parts and relates to an apparatus and method for the automated production of parts of this type having very fine surface structures, particularly concentrator lens panels, which contain at least one, preferably annular, stepped region as per Fresnel lenses. Handling during the production of the lens panels is difficult, inter alia, because after the curing operation, on account of relatively large adhesion forces or cohesion forces, the mould is removable in a precisely reproducible manner from the product or from the system only with difficulty. It is the object of the present invention to provide a method and an apparatus for the automated production of concentrator lens panels.

Abstract: A daylighting sheet is provided which efficiently performs daylighting and in which, when the daylighting sheet is applied to an opening portion, such as a window of a building, it is possible to see an outdoor side from an indoor side. The daylighting sheet is formed by stacking a plurality of layers, the layers include: a translucent base material layer; and a light deflection layer that is formed on the base material layer, and the light deflection layer includes: light transmission portions that are aligned along one surface of the base material layer so as to be able to transmit light; and light deflection portions that are formed between the light transmission portions and deflect the light reaching the light deflection portions.

Abstract: A light guide plate with triangular micro prisms comprises a smooth surface and a prism surface. A plurality of micro prism bodies is arranged on the prism surface. The cross section of each prism body is a triangle. A light source is provided on the outside of the micro prism having the longest distance from the triangle vertex to the smooth surface. The side of the triangle which is far from the light source and receives the light from the light source is called the acceptance side. The angle between the acceptance side and the normal line of the smooth surface is 40 degree to 90 degree. The angles from the micro prism body having the shortest distance between the vertex of triangle and the smooth surface to the micro prism body having the longest distance between the vertex of triangle and the smooth surface are gradually increased. The light guide plate may be symmetrical or asymmetrical, and it may be a rectangular plate or a circular plate.

Abstract: A metal mold including: a first inner metal mold which forms a first lens surface and a first flat surface portion of a lens; a first outer metal mold which forms a second flat surface portion; a second inner metal mold which forms a second lens surface and a third flat surface portion; and a second outer metal mold which forms a fourth flat surface portion, and wherein a first protruded portion which forms a first concaved portion on the lens is formed all around an outer periphery of the first inner metal mold, the first concaved portion serving as clearance for a burr, and a second protruded portion which forms a second concaved portion on the lens is formed all around an outer periphery of the second inner metal mold, the second concaved portion serving as clearance for a burr.

Abstract: Embodiments include methods, systems, and/or devices that may be used to create aberration-corrected gradient index lenses. In some embodiments, data related to aberration measurements is received. This data is processed and an inverse map is generated to compensate for the aberration measurements. An intensity pattern corresponding to the inverse map is then projected onto a blank lens (e.g., to locally polymerize a mobile monomer) to create an exposed lens with a gradient index to correct for the aberration measurement. For example, in some embodiments, the lens may be an intraocular lens and the data can be generated by using a wavefront sensor to measure aberrations (e.g., an optical phase profile to correct defocus or astigmatism) in a patient's eye.

Abstract: The invention provides an extrusion material supply device suitable for use in melt extrusion molding, and a method for manufacturing an optical transmission body, in which a deterioration of an optical signal transmission loss is extremely small, and productivity intrinsic to an extrusion molding method is provided in combination. An extrusion material supply device 1 includes: a vertical hopper 2, which has a cooling unit 3 and a heat melting unit 4 continuous with a lower portion thereof, and houses a material rod R; cooling means 5 for cooling the cooling unit 3; an electric heater 6 that heats the heat melting unit 4; and gas pressurizing means 7 for sequentially supplying molten plastics M to a metal die by a gas pressure. The heat melting unit 4 is formed into a cylinder shape in which an inner diameter is larger than an inner diameter of the cooling unit 3 arranged above, and enables the molten plastics M to spread in the heat melting unit 4.

Abstract: A plastic optical element includes a member and covering portions formed on a first surface and a second surface of the member. A projecting portion made of a material out of which the member is made and a material out of which the covering portions are made is formed on a part of a side surface of the member, and the covering portion of the first surface and the covering portion of the second surface are connected to each other through the projecting portion.

Abstract: An absorber device comprises a substrate; one or more thin film radiation absorbers arranged on the substrate; an integrated optical system, comprising at least one first optical element; a cover medium arranged above the substrate and the one or more radiation absorbers. The at least one first optical element and at least one corresponding one of the one or more radiation absorbers are aligned with respect to their optical axis, such that an incoming radiation is directed onto the one or more radiation absorbers by the optical system. A method of manufacturing an absorber device is also provided.

Abstract: A lighting apparatus with uniform illumination distribution, according to various embodiments, can include a lens for area lighting. In one embodiment, the lens comprises a plurality of cross-sections identified by a thickness ratio defined at different angles. The thickness ratio is determined relative to the thickness of the cross-section defined at a center angle of the lens. In another embodiment, the lighting apparatus with uniform illumination distribution includes a lens having an inner surface and an outer surface. A profile of the inner surface and the outer surface is composed of a plurality of piecewise circular arcs defined with radii and circle centers. The lens is formed as a complex curve lens by joining the piecewise circular arcs of the inner surface and the outer surface.

Abstract: The present invention relates to a polarizing lens molded by inserting a polarizing sheet bent into a sphere or an asphere after having an aromatic polycarbonate sheet bonded via an adhesive layer to both surfaces of a film with polarized nature into a mold, and injecting aromatic polycarbonate, wherein heat treatment at a temperature not less than a temperature of 50° C. lower than the glass transition point and less than the glass transition point for an appropriate time has been performed after injecting aromatic polycarbonate to approximate a designed value of the lens curvature.

Abstract: A lens plate includes a transparent substrate wafer, and a plurality of lenses and spacers that are formed of a single portion of material on the transparent substrate wafer. An assembly includes a first lens plate that includes a first transparent substrate wafer, a plurality of first lenses and a plurality of spacers, the first lenses and spacers being formed of a single portion of material on said first transparent substrate wafer. The assembly also includes a second lens plate that includes a second transparent substrate wafer and a plurality of second lenses formed thereon, each of the plurality of second lenses corresponding to a respective one of the plurality of first lenses. The lens plates are aligned such that each of the plurality of first lenses aligns with the respective one of the plurality of second lenses, and the lens plates are bonded to one another.

Abstract: A method for producing an optical material includes a predetermined compound (a), compound (b), compound (c), compound (d), and compound (e). The method minimizes the occurrence of a defect where peeling traces are left on a lens. The first to the fifth step minimizes the defect where peeling traces are left. First: dissolving the compound (b) into the compound (a) to obtain a first solution. Second: adding the compound (e) to the first solution obtained in the first step and then mixing to obtain a second solution not comprising the compound (d). Third: adding the compound (c) to the second solution obtained in the second step to obtain a reaction mixture. Fourth: adding the compound (d) to the reaction mixture obtained in the third step and then mixing to obtain a resin composition for an optical material. Fifth: cast-molding the resin composition and then polymerizing to obtain the optical material.

Abstract: A method of producing a diffractive optical element includes forming on a textured surface of a first substrate (2) a predetermined pattern of an ink (3) including an activator for a metallization reaction and one or more binders; causing or allowing the binder to solidify; applying a first adhesive layer (4) on top on the solidified binder and activator; securing a second substrate (5) to the adhesive layer; removing the second substrate with adhered solidified binder and activator from the first substrate; and forming a metal coating (10) onto the activator-containing regions adhered to the second substrate.

Abstract: A method for obtaining an ophthalmic lens, includes: —the step of selecting a material that displays a threshold of pinhole formation during a machining step of a finished surface (20) in a material-removing depth (D) of 0.07 mm, which is at least 15% higher than the threshold of pinhole formation during a machining step of a finished surface in a material-removing depth (D) of 0.22 mm; —the step of selecting a set point for finishing depth of cut (A) between 0.015 mm and 0.075 mm; and—the step of selecting a set point for finishing feed between 85% and 99% of the threshold of pinhole formation for the material-removing depth (D) given by the sum of the selected set point for finishing depth of cut (A) and the blank roughness (B?).

Abstract: An optical component of the present invention is composed of a ZnSe polycrystal body, and the ZnSe polycrystal body is constituted by crystal grains with an average grain size larger than or equal to 50 ?m and smaller than or equal to 1 mm and has a relative density higher than or equal to 99%.

Abstract: Provided is a silicone hydrogel soft contact lens obtained by curing in a double-sided casting mold, a liquid mixture including glycerol mono(meth)acrylate and at least one type of silicone monomer having at least one hydroxyl group or polyethylene glycol group in the molecular structure thereof, the silicone hydrogel soft contact lens having a wettable surface without a polymerized lens-shaped material being subjected to post-processing to improve the water wetting properties of a surface thereof.

Abstract: A lens structure includes an elastomer formed as a lens. The lens has a planar surface and a curved surface opposed to the planar surface. The elastomer of the lens structure may be formed of a base polymer polydimethylsiloxane (PDMS) material. When the lens structure is applied proximate to a camera sensor array of an electronic device, such as a cell phone or a tablet, the combination can function as microscope. By altering parameters of the lens, such as the radius of curvature, it is possible to achieve a wide range of magnification.

Abstract: A method for designing an optical component for shaping laser light according to one embodiment of this invention measures the intensity distribution of an incident laser light, obtains the shapes in the short and long axial directions of a pair of aspheric lenses for each of the short and long axial directions of the incident laser light from the measured intensity distribution of the incident laser light and a desired intensity distribution, performs approximation of a high-order polynomial of the shapes in the short and long axial directions of the pair of aspheric lenses, corrects the high-order polynomials for the short or long axial directions using a correction factor, and obtains the shapes of the pair of aspheric lenses on the basis of the corrected high-order polynomials.

Abstract: An apparatus for manufacturing a lens array includes a first lens forming unit that has a plurality of blades forming partition walls on a polymer substrate on which a parallax image is formed and a plurality of nozzles discharging a polymer, a detecting unit that detects a position of the parallax image, and a scanning control unit that adjusts a scanning start position of the first lens forming unit based on the position of the parallax image detected by the detecting unit and controls forming of the partition walls by the blades and discharging of the polymer to a region between the partition walls through the nozzle on a surface of the polymer substrate on which the parallax image is formed.

Abstract: The present invention discloses methods and apparatus for methods and apparatus for manufacturing an Ophthalmic Lens with passive event coloration mechanisms, which may not require a power source. In some embodiments, the passive event coloration mechanisms may be combined with Rigid Inserts or Media Inserts, wherein the inserts may provide additional functionalities.

Abstract: Fixed side molding dies are removed from fixed side molding dies insertion hole portions in accordance with the disconnection in the connection/disconnection while maintaining a contact state that a second transfer portion is in contact with a portion other than a fixed side optical functional surface of each molded article at the time of mold opening of a fixed die and a movable die. Thereby a first transfer portion is released from the fixed side optical functional surface.

Abstract: A method for producing an optical film of the present invention includes: (1) a step for obtaining a (meth)acrylic resin by copolymerizing methyl methacrylate and a copolymerizable monomer containing an acryloyl morpholine in the presence of a polymerization initiator and a chain transfer agent; and (2) a step for obtaining an optical film by melt extruding a resin composition that contains the thus-obtained (meth)acrylic resin and a cellulose ester resin at a (meth)acrylic resin:cellulose ester resin ratio of from 95:5 to 30:70. The (meth)acrylic resin obtained in step (1) is characterized in that: (a) the weight average molecular weight (Mw) thereof is from 2.0×104 to 5.0×105; (b) the total amount of the remaining methyl methacrylate and the remaining copolymerizable monomer is 0.05-1% by mass; (c) the amount of the remaining polymerization initiator is 0.01-0.5% by mass; and (d) the amount of the remaining chain transfer agent is 0.01-0.5% by mass.

Abstract: The present invention provides silk photonic crystals that can be used to enhance light-induced effects. Also disclosed are biocompatible, functionalized, all-protein inverse opals and related methods.

Abstract: The present invention relates to a gas cell (1) for optical measurements of gas content and/or concentration comprising a cavity (1a), at least one aperture (11) for gas exchange, at least one first socket (12) for light emitting means (2) and at least one second socket (13) for light detecting means (3). The length of an optical measuring path (A) through the cavity (1a) is defined by a direct or indirect distance between a light emitting means (2) in the first socket (12) and a light detecting means (3) in the second an epoxy mold compound is used to form at least the parts of the gas cell (1) that define the optical measuring path (A).

Abstract: Described herein are methods for increasing the ion permeability of a silicone hydrogel contact lens by adding a small amount of an ion-permeability-enhancing (“IP-enhancing”) hydrophilic vinylic monomer or macromer into a lens-forming material for cast-molding silicone hydrogel contact lenses, while not altering significantly the water content and/or the oxygen permeability of resultant lenses from the lens-forming material.

Abstract: An optically readable code support (30) to be associated with or be part of a capsule intended for delivering a beverage in a beverage producing device, the support comprising at least one sequence of symbols represented on the support so that each symbol is sequentially readable by a reading arrangement of an external reading device while the capsule is driven in rotation along an axis of rotation, wherein the symbols are essentially formed of a succession of light reflective surface portions (610-615) and light absorbing surface portions (600-604); said light absorbing surface portions providing a lower light-reflective intensity than the light-reflective surface portions, wherein the code support comprises at least one base layer (500) extending continuously at least along said sequence of symbols, wherein the light-absorbing surface portions are roughened surface portions having a higher rugosity (Rz) than the light-reflective surface portions.

Abstract: In order to produce high-quality optical elements stably at all times without the flow of molten resin inside an injection molding cavity being hindered by the protrusion of the outer peripheral edge of a lens after compression molding, a cavity formed when a pair of molds for molding is closed is provided with: an optical-function-part molding cavity (27); an annular connection-part molding cavity (28) connected to the outer peripheral edge of the optical-function-part molding cavity; and an edge-part molding cavity (29) connected to the outer peripheral edge of the connection-part molding cavity. In a compression molding step, a protrusion part is formed by making a portion of a compression molding material bulge out from the connection-part molding cavity into the edge-part molding cavity (29). In an injection molding step, the molds are filled by injecting an injection molding material into the edge-part molding cavity (29).

Abstract: Methods of manufacturing a contact lens are provided. Such methods include using an adjustable mandrel to fixedly retain a single mold section carrying a polymerized contact lens product and delensing the contact lens product from the single mold section. Adjustable mandrels are also provided.

Abstract: Disclosed are methods, materials and systems for producing contact lenses and contact lenses produced using said methods, materials and systems. According to some embodiments, a contact lens produced by said methods, materials and systems includes an extra-ocular indicator (“EOI”) adapted to alter in color upon removal of said lens from an eye. The EOI may be at least partially composed of a pigment adapted to become relatively more visible when the contact lens is outside an eye than when the contact lens is placed in an eye.

Abstract: Methods for manufacturing ophthalmic devices and apparatus for treatment of ophthalmic devices are provided. The apparatus includes a tank, liquid, baffle and ophthalmic devices. The methods include placing the liquid, baffle and ophthalmic devices in a tank including at least one element which produces bubbles and/or convection currents. The baffle is structured and/or positioned to prevent bubbles from contacting the ophthalmic devices in the tank, to reduce the force of the convection currents, or both.

Abstract: The invention provide a method for cast-molding hydrogel contact lenses, especially silicone hydrogel contact lenses by using plastic molds of a poly(cycloalkylene-dialkylene terephthalate) copolymer. These plastic molds do not need to be degassed and stored in an oxygen-free atmosphere (e.g., N2 or Ar) before being used for cast-molding silicone hydrogel contact lenses in the absence of oxygen and resultant silicone hydrogel lenses can still have relatively high ion permeability and relatively low variation in targeted optical power, compared with silicone hydrogel lenses made from a conventional mold material, such as polypropylene. The invention also provides plastic molds for cast-molding silicone hydrogel contact lenses.

Abstract: The present disclosure provides systems and methods for fabricating a patterned lens through hot stamping techniques. In certain example embodiments, a lens material is placed in a heat press. The heat press includes at least one shim having a patterned surface. The shim is pressed onto the lens material with the patterned surface contacting the lens material. The heat press heats the lens material to malleability and the pattern of the shim is pressed into the lens material. The lens material is then cooled and a patterned lens is fabricated.

Abstract: The present invention describes methods for creating single-piece or multi-piece Rigid Inserts that may be included in an Ophthalmic Lenses or may comprise the Ophthalmic Lens, wherein the Rigid Insert may be formed through the processing of thin sheet material by thermoforming Single piece annular Rigid Inserts may perform the function of providing a template for printed patterns to be included in Ophthalmic Lenses. Single piece full Rigid Inserts may perform the function of polarizing light or filtering light based on the properties of materials used to form the insert. Multi-piece Rigid Inserts may incorporate activation and energization elements. The present invention also includes apparatus for implementing such methods, as well as Ophthalmic Lenses and inserts formed with the Rigid Insert pieces that have been thermoformed.

Abstract: A lens is obtained by injection molding. The lens includes a plurality of projections arranged on a surface at a pitch smaller than or equal to a predetermined value to reduce reflection of light with a wavelength equal to or greater than the pitch, and a gate mark formed on an outer periphery of the optical element in the injection molding. A peripheral portion of the surface includes a first region whose circumferential position corresponds to the gate mark, and a second region being adjacent to the first region. Axes of first projections in the first region are inclined more outward than axes of second projections in the second region.

Abstract: A lens for non-prescription eyewear includes: a first surface having a first surface shape; and a second surface opposite the first surface, the second surface having a second surface shape, wherein the first surface includes a point of maximum curvature and the shape of the first surface measured along a line on the first surface decreases by at least 1.5 diopters at a distance 15 mm in every direction from the point of maximum curvature.

Abstract: Some embodiments relate to a method of processing a workpiece. The workpiece includes a first surface region having a first wettability coefficient, and a second surface region having a second wettability coefficient that differs from the first wettability coefficient. A liquid, which corresponds to an optical structure, is dispensed on the first and second surface regions of the workpiece, wherein the liquid self-aligns to the second surface region due to the difference between the first and second wettability coefficients. The self-aligned liquid is hardened to form the optical structure.

Abstract: A molded dichroic mirror and method of manufacture thereof. The dichroic minor may be molded from polysiloxane or lithia potash borosilicate and may be coated to reflect an infrared signal and configured to transmit a radio frequency signal between 33 GHz and 37 GHz.

Abstract: A lens mold includes a bottom mold and a top mold joining with the bottom mold. The bottom mold defines a first through hole. The top mold defines a second through hole. The lens mold further includes a bottom mold core and a top mold core. The bottom mold core is detachably received in the first through hole of the bottom mold. The top mold core is detachably received in the second through hole of the top mold. A plurality of microstructures is formed on a top surface of the bottom mold core near the top mold core to form a plurality of microstructures on a bottom surface of a lens formed by the lens mold. A method for manufacturing the lens with the lens mold is also provided. The lens is used as a secondary optical element for an LED.

Abstract: A molded plastic part prepared by injecting a resin in a cavity of a die so that a pressure is generated in the resin in the cavity and at least one transfer wall surface of the cavity is transferred to the resin. The plastic part has at least one transferred surface; at least one imperfectly transferred concave portion on a first surface thereof other than the transferred surface; and at least one imperfectly transferred convex portion on the first surface or a second surface thereof other than the transferred surface. The ratio (a)/(b) of the thickness (a) of the plastic part in a direction perpendicular to the transferred surface to the thickness (b) of the plastic part in a direction parallel to the transferred surface is less than 1.

Abstract: An embodiment of a microcapsule includes a shell surrounding a space, a liquid within the shell, and a light absorbing material within the liquid. An embodiment of a method of making microcapsules includes forming a mixture of a light absorbing material and an organic solution. An emulsion of the mixture and an aqueous solution is then formed. A polymerization agent is added to the emulsion, which causes microcapsules to be formed. Each microcapsule includes a shell surrounding a space, a liquid within the shell, and light absorbing material within the liquid. An embodiment of a method of using microcapsules includes providing phototriggerable microcapsules within a bulk material. Each of the phototriggerable microcapsules includes a shell surrounding a space, a chemically reactive material within the shell, and a light absorbing material within the shell.

Abstract: A method of manufacturing a lens module including following is provided. A first lens plate having a plurality of first lens sections, a second lens plate having a plurality of second lens sections and a third lens plate having a plurality of third lens sections are provided. The first lens sections of the first lens plate are separated to form a plurality of first lens units. The second and third lens plates are connected. A relative position between each of the first lens units and one of the second lens sections corresponding to the first lens unit is adjusted. Each of the first lens units and the second lens section corresponding to the first lens unit are connected. The second and third lens sections are separated to form a plurality of second lens units and a plurality of third lens units connected to the second lens units.