Abstract: Disclosed is a Luneberg lens that is formed of a plurality of wedge sections that can be easily assembled into a sphere. The wedge sections can be formed of an injection molded plastic, which can dramatically reduce the cost of manufacturing the lens. Different configurations of wedge sections are disclosed.

Abstract: Circuit feature casting for manufacture observation is disclosed herein. According to an aspect, a method includes applying a molding material to a feature of a circuit to substantially cover the feature with the molding material. The method also includes curing the molding material. Further, the method includes separating the molding material from the feature to reveal a cast of the feature of the circuit.

Abstract: Apparatuses and methods for multistage molding of contact lenses containing low oxygen permeable components or oxygen impermeable components. Components may be embedded within a contact lens by forming a device on a polymer substrate, molding a spacer onto a male mold, bonding the device to the spacer, removing the polymer substrate, and molding the remainder of the contact lens.

Abstract: A method of acquiring a sample for evaluation of a SiC single crystal, comprising: a step of cutting a SiC ingot in a radial direction at a thickness position, which is located in a range from a curved surface which forms a distal end surface in a crystal growth direction to a seed crystal, to obtain a head member which includes the curved surface, wherein the SiC ingot used in the step is a SiC ingot in which SiC thereof is crystal-grown from a seed crystal along a c axis direction; and a step of polishing a silicon surface of the head member to obtain a sample for evaluation.

Abstract: A deformable mirror has a mirror front face and a mirror back exposed surface. An elastomeric support structure is connected to the mirror back exposed surface. The elastomeric support structure includes a multitude of microchannels wherein the microchannels have a closed end located proximate the mirror back exposed surface and an open end located away from the mirror back exposed surface. A fluid pressure source is connected to the open end of the microchannels. A power source and control system are connected to the fluid pressure source.

Abstract: A method for forming a lens housing containing a polymeric lens including inserting a mandrel having a distal face with negative features of the desired polymeric lens into a cylinder and filling a reservoir formed between the distal face and a distal end of the cylinder with a curable polymeric lens material. The curable polymeric lens material is cured in place within the reservoir thereby forming the desired polymeric lens. The proximal surface of the polymeric lens is formed and shaped by the distal face of the mandrel, while the distal surface of the polymeric lens is dependent upon the amount of the curable polymeric lens material placed in the reservoir and the volume of the reservoir.

Abstract: A method for injection molding of a plus power lens element comprises injecting a melt of thermoplastic material comprising at least one UV absorber at a temperature higher than a glass transition temperature (Tg) of the thermoplastic material in an initial molding cavity delimited by two facing mold inserts. During the injecting, the two facing mold inserts are moved toward one another to define a final molding cavity whose volume is less than that of the initial molding cavity. After cooling and opening of the mold cavity, the plus power lens element is recovered. One of the two facing mold inserts comprises a flat surface facing the initial molding cavity, thereby to form a flat surface on one side of the plus power lens element, and the other of the two facing mold inserts comprises a concave surface facing the initial molding cavity, thereby to form a convex surface on an opposite side of the plus power lens element.

Abstract: A method of measuring an axis angle of a toric contact lens including a posterior toric central zone having a cylindrical axis, and an anterior lens surface forming a ballast that has an axis of orientation offset from the cylindrical axis at a selected rotational angle is disclosed.

Abstract: The present invention relates to coatings for devices such as medical devices that are useful for coating a variety of different types of material surfaces, including polymer and metal surfaces. The present invention also includes the method of using the coated device and methods to make the coated device and coating.

Abstract: A film for glass bonding includes a thiourethane layer comprising a heterocyclo-alkanediyl-based repeat unit indicated by Formula 1, and a linear alkanediyl-based repeat unit indicated by Formula 2, and a base layer, disposed on a surface of the thiourethane layer, comprising a polyvinyl acetal resin and a plasticizer. In the Formula 1, R1 is —O— or —S—, and X is a heterocyclo-alkanediyl group having carbon atoms of 3 to 10 and sulfur atoms of 1 to 5, and in the Formula 2, R2 is —O— or —S—, and n2 is an integer of 4 to 10.

Abstract: There is described a method of separating excess lens forming material from a molded ophthalmic lens, in particular a contact lens. After polymerization and/or cross-linking of a lens forming material (P) within a mold cavity (4) of a mold (1) comprising female and male mold halves (2, 3) to form an ophthalmic lens non-polymerized and/or non-cross-linked lens forming material is flushed away from the mold halves (2, 3) with a jet of a fluid flushing medium, such as, e.g., water or a solvent or an inert gas. Subsequently the molded lens is dried. In accordance with the invention the flushing is accomplished with the mold halves (2, 3) still in the closed position. There is also described an apparatus for carrying out the method.

Abstract: An optical lens mold includes a mold body, a magnetic fluid, a plurality of thermocouples, a plurality of electromagnets, a controlling unit and a power source. The mold body defines a plurality of injection chambers and a cooling channel surrounding the plurality of injection chambers. The magnetic fluid contains magnetic particles and flows in the cooling channel. The thermocouples are capable of sensing temperatures of the plurality of injection chambers correspondingly. The electromagnets are positioned above the cooling channel corresponding to the plurality of thermocouples. The plurality of thermocouples and the plurality of electromagnets are connected to the controlling unit via the power source, the controlling unit is capable of the comparing the standard temperature value with temperature values sensed by the plurality of thermocouples, and maintaining the temperature of the plurality of injection chambers in a normal state.

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: A detachable threaded rod is used in an injection mold, and includes an operation portion, a molding portion, and a screw. The operation portion includes a rod part, the rod part defines a mating hole and a screw hole on a bottom surface of the mating hole. The molding portion includes a front end, a rear end, and a side surface connected between the front end and the rear end. The molding portion defines a cavity on a front end. The molding portion includes a mating portion extending from the rear end and received in the mating hole. The mating portion defines a through hole communicating with the cavity. The molding portion defines external threads on the side surface. The screw penetrates the through hole and screwing in the screw hole, the operation portion is fixed with the molding portion by the screw.

Abstract: Methods and apparatuses for coating at least a portion of a curved surface of a lens with a polarizing liquid are disclosed throughout the specification. For example, there is provided a method comprising providing a lens having a curved surface, and applying a polarizing liquid to at least a portion of the curved surface by shear flow with a flexible apparatus. Other methods are included. Apparatuses include ophthalmic lenses having polarized coatings formed according to any of the disclosed methods.

Abstract: A mold core includes first and second main bodies and an adjustment assembly. The first main body includes a front surface, a rear surface opposite to the front surface, and a receiving cavity passing through the front and rear surfaces. The front surface defines two first cavities at opposite sides of the receiving cavity. A connection line of centers of the first cavities intersects with a symmetry axis of the first cavities to form a first intersection point. The second main body includes a forming surface defining second cavities. A connection line of centers of the molding cavities intersects with a symmetry axis of the second cavities to form a second intersection point. The forming surface is coplanar with the front surface. The adjustment assembly abuts the first and the second main bodies to compensate an offset between the first and second intersection points to satisfy a predetermined range.

Abstract: The present invention encompasses, in part, a method and apparatus for lens casting in which two molds, preferably formed of plastic, are interconnected or joined together via a ring to form a mold cavity having substantially the same dimensions of the lens to be formed therein. The invention is further directed to compositions and methods used in lens casting. In a first implementation the invention includes a mold having a ring having an interior periphery; a front mold formed of a plastic and having a lens-forming surface, an edge circumscribing the lens-forming surface that is sized to be complementarily received within a portion of the interior periphery of the ring, and a base having dimensions greater than the interior periphery; and a rear mold formed of a plastic and having a lens-forming surface.

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 optical wavefront correction plate incorporates a unique, three-dimensional spatial retardation distribution utilizing the index of refraction change of resin mixture in its cured state. The optical wave plate comprises a pair of transparent plates, containing a layer of a monomers and polymerization initiators, such as resin mixture. This resin mixture exhibits a variable index of refraction as a function of the extent of its curing. Curing of the resin mixture may be made by exposure to light, such as ultraviolet light, and may be varied across and through the surface of the resin mixture to create a particular and unique three-dimensional wavefront retardation profile. The optical wave plate provides improved performance in large area mirrors, lenses, telescopes, microscopes, and ophthalmic diagnostic systems.

Abstract: A plastic article is formable by using a metal die having a cavity to accommodate melted resin therein at a given pressure. The plastic article includes a transfer face to which is transferred a face shape of the metal die, a projection disposed at least one face other than the transfer face, an incomplete transfer face having a concave shape disposed at the same face on which the projection is disposed, formed by an incomplete transfer of a face shape of the cavity of the metal die, and an incomplete transfer face having a convex shape disposed at least one face other than the transfer face.

Abstract: The gauge lens with anti-fog includes a substantially planar transparent lens substrate having an outer surface and an inner surface and a thin film possessing anti-fog properties adjacent and substantially covering the inner surface of the lens substrate to provide a low angle of contact for water and moisture. The anti-fog film is bonded to the lens substrate during the molding process that produces the lens substrate shape. The anti-fog film comprises a hydrophilic material or is coated with a hydrophilic coating. In addition to the anti-fog film, in another embodiment, the outer surface of the lens substrate has a hard coat film adjacent and substantially covering the outer surface of said lens. The materials for the lens substrate, anti-fog film, and hard coat film are selected based on the application, performance, and stability of the gauge lens in the environment that it is operated.

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: There is described a method of separating excess lens forming material from a molded ophthalmic lens, in particular a contact lens. After polymerization and/or cross-linking of a lens forming material (P) within a mold cavity (4) of a mold (1) comprising female and male mold halves (2, 3) to form an ophthalmic lens non-polymerized and/or non-cross-linked lens forming material is flushed away from the mold halves (2, 3) with a jet of a fluid flushing medium, such as, e.g., water or a solvent or an inert gas. Subsequently the molded lens is dried. In accordance with the invention the flushing is accomplished with the mold halves (2, 3) still in the closed position. There is also described an apparatus for carrying out the method.

Abstract: Apparatus and methods for injection molding intraocular lenses includes an embodiment having first and second runners extending into first and second optic cavities of a mold configured to make a dual optic lens device.

Abstract: A mold set includes: a first mold and a second mold placed so that they sandwich an optical material and face each other; and a first spacer and a second spacer provided between the first and second molds, wherein: the first spacer secures an interval between the first and second molds at a first temperature achieved in a process of pressurizing the optical material; the first spacer shrinks in a mold opening-closing direction more greatly than the second spacer while the first temperature is changing to a second temperature achieved in a process of cooling the optical material; and the second spacer secures the interval between the first and second molds at the second temperature.

Abstract: A method for producing a mold for molding a lens wherein the upper surface of a glass material to be molded is molded by a thermal sag method using a continuous heating furnace. A mold having a curvature distribution on the molding surface is used, the highest temperature direction from the geometric center of the molding surface to the highest temperature point in the furnace is determined in one or more regions by measuring the temperature at a plurality of measuring points on the molding surface and the mold is rotated during the forming of the mold in which an eyeglass lens is subsequently molded.

Abstract: A method of manufacturing a mold includes following steps. Providing a solution, which includes a solvent, a solute and a plurality of nanoparticles. Providing a first substrate. Spin coating the solution on the first substrate, and then vaporizing the solvent to form a first mold on the first substrate. Thus, an upper surface of the first mold has a plurality of first porous structures. The present invention further includes forming an optical film having protrusion patterns with the aforementioned mold.

Abstract: A method for making a silicone hydrogel contact lens is provided. In one embodiment, a prepolymer mixture is polymerized in a lens mold in an atmosphere having less than about 10000 ppm oxygen to form a silicone hydrogel contact lens suitable for extended wear as characterized by producing less than 10% corneal swelling after a period of continuous wear of 7 days including normal sleep periods. In one embodiment, the prepolymer mixture comprises at least one oxyperm material containing hydrophilic groups, wherein the at least one oxyperm material is a siloxane-containing macromer or monomer, at least one ionoperm material, and a cross-linking agent. In certain embodiments, the polymerization of the prepolymer mixture may be carried out in an atmosphere having less than about 1000 ppm oxygen.

Abstract: The present invention provides molds useful in contact lens production, which molds incorporate a centering and spacing feature in the form of tabs on one of the mold halves. The spacing feature both centers the mold halves in relationship to each other and permits free flow of excess monomer from the mold. Additionally, the spacing feature aids in height control of the one mold half in relation to the other mold half.

Abstract: An apparatus and method for releasing a lens molded in a cavity between posterior and anterior mold sections and adhered thereto. A post is configured to support a flange of the posterior section while the anterior section remains spaced from the post. Posterior section is compressed between a pin applied to an outer concave surface of the posterior section and the post, thereby initially releasing peripheral regions of the posterior section and subsequently the remaining portions thereof. Upon separation, the anterior section together with the lens drops onto the post so that its outer convex surface rests on the post. A collar unit with gas channels presses against a flange of the anterior section while blowing jets of gas towards an interface between a “monomer” ring formed around the lens. In this manner, initially the “monomer” ring and then peripheral regions of the lens are separated from the anterior section.

Abstract: An injection compression molding method of a lens is provided, where a toggle link mechanism (65) is actuated to close a molding die (50) and a movable die plate (64) is moved to a position establishing a cavity thickness of greater than a thickness of an article to be molded while the die is closed. After injecting a molten resin into the cavity, the molten resin is sealed in the cavity and the toggle link mechanism (65) is actuated to advance the movable die plate (64) toward a fixed die plate (61), the relative position of a rear die plate (62) and the movable die plate (64) is made constant at a position where extension of a tie bar (63) becomes a predetermined value, and the molten resin is cooled for a predetermined time after completion of pressurizing the resin.

Abstract: A process for the automatic manufacturing of different toric optical lenses having a front surface and a rear surface having a predetermined rotational orientation relative to one another, and with at least one of the front and rear surfaces having a toric portion, comprises forming a first toric lens by: introducing a starting material into a lens mold (3) comprising a male mold half (30) and a female mold half (31) defining a mold cavity between the shaping surfaces of the male and female mold halves, the shaping surfaces being arranged at a first rotational position relative to one another and at least one of them being toric, and curing the starting material in the mold cavity to form the first toric lens.

Abstract: An exemplary cutting apparatus for cutting components from a sprue includes a sprue retainer, a laser cutting unit, and a rotating driving unit. The sprue retainer has a supporting surface. The supporting surface defines a receiving hole, and grooves extending across the entire supporting surface. The grooves are in communication with the receiving hole. The laser cutting unit is disposed above the sprue retainer and is configured for emitting a laser beam to cut the sprue carried on the sprue retainer. The sprue retainer is coupled to the rotating driving such that the rotating driving unit is capable of driving the sprue retainer to rotate.

Abstract: The present disclosure relates to a method for making a mold for forming an anti-flare lens. The lens includes an optically active part and an optically inactive part. In the method, a mold core blank having a bottom surface and a top surface, is provided. The bottom surface is machined into a first surface portion, a second surface portion, and an annular surface portion. The second surface portion is located at a center of the mold core blank. The annular surface portion connects the second surface portion and the first surface portion. The first surface portion is roughened to form a roughened molding surface for forming the optically inactive part. The second surface portion is precisely machined to form a smooth molding surface for forming the optically active part. The annular surface is precisely machined to form a smooth transition surface.

Abstract: The invention is related to a method of the manufacture of an implantable lens from a liquid polymer precursor in an open mold, during which the liquid polymer precursor in metered into the open mold in a such measured amount, that comes into contact with a functional shaping inner surface of the open mold, which is located under a peripheral circular sharp edge of the stationary open mold or which reaches up to this peripheral circular sharp edge, at which point the open mold, which contains the liquid polymer precursor, is rotated around it's vertical axis at a speed, at which the edge of the surface of the liquid polymer precursor reaches the peripheral circular sharp edge of the open mold, after which the liquid polymer precursor is exposed to conditions, under which it transforms itself into a state of a clear solid polymer by polymerization and/or cross-linking, until such time, at which the stated transition is attained, and then the implantable intraocular lens is removed from the open mold.

Abstract: Taper portions 151 and 161 are provided in the cavity of a stationary side die 110 and the cavity of a movable side die 120 in an injection molding apparatus, respectively, and a floating mechanism 170 is provided so that one taper portions are able to freely follows the other taper portions while die clamping. This configuration makes it possible to correct axial misalignment in each of the cavities.

Abstract: A method of manufacturing an implantable lens from liquid polymer precursor in an open mold includes metering the liquid into the mold in a measured amount that comes into contact with a functional shaping inner surface of the mold located under a peripheral circular sharp edge of the stationary mold or which reaches up to this peripheral circular sharp edge, at which point the open mold is rotated around it's vertical axis at a speed at which the edge of the surface of the liquid polymer precursor reaches the peripheral circular sharp edge of the open mold, after which the liquid polymer precursor is exposed to conditions under which it transforms itself into a state of a clear solid polymer by polymerization and/or cross-linking, until the transition is attained, and then the implantable intraocular lens is removed from the mold.

Abstract: The invention provides a method of moulding a vision correction lens from a transparent resin. The resin is introduced into a mould cavity, the sides of which cavity which correspond to the front and rear surfaces of the lens being formed by two sheets, at least one of which is flexible. The amount of resin in the cavity is adjusted to deform the flexible sheet(s) so that the shape of the lens defined by the sheet(s) will provide a desired power, and the resin is then cured. The sheets can be transparent, and a user can look through them as the amount of resin is adjusted, to ensure that the lens is of the desired power. Further, the amount of resin in the cavity can be adjusted to accommodate changes in the refractive index of the resin as it cures.

Abstract: A method of manufacturing an optical member by mixing isocyanate terminal prepolymer component (A) and aromatic diamine component (B), and immediately after mixing, casting a mixture into a casting mold to obtain a molded article. A method of manufacturing a plastic lens by mixing said components (A) and (B), immediately after mixing, casting a mixture into a casting mold and polymerizing it to obtain a molded article. A gasket for molding plastic lenses comprised of a cylindrical member. A casting mold for molding plastic lenses using this gasket and a monomer casting jig.

Abstract: A method of casting a plastic lens starting material liquid using a casting apparatus comprising at least a mixing and discharging part and a casting part, and casting a plastic lens starting material liquid sequentially into multiple casting molds.

Abstract: A method for press molding a lens array is provided. First, a mold core is provided. The mold core has a first surface having a first alignment formed thereon using a lithography method, and a lens molding surface array and a second alignment formed thereon using an ultra-precision machining method. Then, a substrate is provided. The substrate has a second surface having a third alignment mark formed thereon using the lithography method. The substrate is first aligned with the mold core by aligning the third alignment mark with the first alignment mark, then is further aligned by offsetting the substrate the spacing between the first and second alignment marks to align the center of the substrate with the center of the lens molding surface array. Finally, a molding material is applied on the substrate, then the mold core is applied on the molding material to press mold the lens array.

Abstract: In a molding apparatus in which upper and lower dies are held in a bearing, there are provided pipes for introducing N2 gas used for controlling temperatures of balls of the bearing, whereby difference in temperature between the guide member and the upper and lower dies is controlled. With this structure, it is possible to prevent generation of an excessive compressive force between the upper die and the lower die and the bearing, to thereby prevent breakage of the dies. Further, it is also possible to prevent formation of gaps between the upper die and the lower die and the bearing, to thereby mold an optical element excellent in accuracy of an optical axis.

Abstract: Methods for producing contact lenses from a polymerizable composition are provided. The methods generally include providing a carrier carrying a plurality of molds each of which contains a polymerizable composition. A chamber is provided which contains a light source providing light to the chamber effective to facilitate polymerization of the polymerizable composition. The molds in the carrier are exposed to the light in the chamber. During this exposing, the light source is monitored, for example, using digital addressable lighting interface (DALI) technology.

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: This invention describes molds made from alicyclic co-polymers that are useful in the production of contact lenses and methods for their use.

Abstract: The invention provides molds useful in the production of contact lenses having seamless edges and in which molds movement of one mold half in relation to the other mold half is decreased. These results are attained by providing mold halves with shoulder stops and seam-matching features.

Abstract: The present invention provides a method for manufacturing a lens used in a camera module including the steps of: preparing a preform for manufacturing a lens; forming a front lens on a front surface of the preform; and forming an array lens by forming a rear lens on a rear surface of the preform during the formation of the front lens.

Abstract: An exemplary injection mold for manufacturing a fiber optic connector includes a first mold, a second mold, an insert, two first positioning bar, and four second positioning bars. The first mold and the second mold cooperatively define a mold cavity. The mold cavity includes two lens molding recesses. The two inserts are attached to the second mold and located in the mold cavity. A dimension of each second bar in cross section is substantially smaller than that of each first positioning bar. One first positioning bar and two second positioning bars are arranged around each insert to position the insert, such that the inserts is suspended in the mold cavity and precisely aligns with the respective molding recesses.

Abstract: A method of forming a mold, concludes: winding a tape around peripheral surfaces of a first molding die and a second molding die to assemble a mold; forming on the tape an injection port for injecting a resin material for forming a plastic lens into the mold; and forming a tab by cutting out a part of the tape non-circularly.

Abstract: An apparatus for molding optical fiber connector is provided. The optical fiber connector includes a main body. The main body has a blind hole for receiving an optical fiber two opposite surfaces being substantially parallel with the blind hole, and a lens portion aligned with the blind hole. The apparatus comprises a molding cavity and an insert for forming the blind hole. The molding cavity includes a central portion for forming the main body, a lens-forming portion for forming the lens portion, and two lateral portions for forming the corresponding surfaces. The molding cavity includes a first gate and a second gate for introducing molding material into the molding cavity. The first gate is located between the insert and one of the two lateral portions and the second gate is defined between the insert and the other one of the lateral potions.