Abstract: A hydrophilic oxygen permeable contact lens having a front surface which is not to be in contact with the cornea of a human eye when the contact lens is worn on the human eye, wherein at least the front surface of the contact lens is coated with a hydrophilicity rendering material which renders the front surface hydrophilic and which is selected from the group consisting of: (A) hydrophilic silicone oil which is represented by the formula given in the specification and whose viscosity at a temperature of 20.degree. C. is not higher than 5,000 centipoise; (B) polysaccharide or its derivative; and (C) denatured collagen whose average molecular weight is in a range of 400.about.100,000. Also disclosed is a method of producing the hydrophilic oxygen permeable contact lens.

Abstract: A method for making improved optical quality lenses is described which includes arranging a mold having a molding surface, a curable optical quality resin composition, and a plastic lens preform of optical quality material such that the resin composition is disposed between, and in contact with, the plastic lens preform and the mold; upon curing, the resin composition forms a cured plastic attached portion that is bonded to the plastic lens preform. The resin composition and plastic lens preform are selected such that the attached portion has a higher scratch resistance, a lower chromatic aberration, and/or a higher ease of edging than the lens preform.

Abstract: A decorative emblem for a vehicle comprises an oval bezel and a transparent lens. A groove with an angled sidewall is formed in the top surface of the bezel. The sidewall forms an angle with the bottom wall of the groove between 88.degree.30' and 82.degree.30' around the oval bezel so that the sidewall overlies the bottom wall making the groove wider at its bottom than at its top to lock the lens in place. The lens covers the top surface and is formed thereon by pouring a liquid lens material on the top surface of the bezel filling the groove. The liquid lens material cures to a hardened condition and the angled sidewall locks the lens in position over the top surface. The lens is transparent so that colors and designs on the bezel are visible.

Abstract: An optical disk records digital information in optically-reflective layers that each vary in thickness between constructive interference of a monochromatic light and destructive interference of the said monochromatic light. The difference in the intensity of a reflected light beam subjected to interferometric constructive and destructive interference is used to communicate digital data from the optically-reflective layers and a detector. The optical disk provides for multiple layers of digital information that are tuned for interferometric response at correspondingly different monochromatic wavelengths of light. Another embodiment of the present invention is a mass-production process for making such an interferometric optical disk. Another embodiment of the present invention is a variation that includes layers that are emitting or absorbing depending on dopants.

Abstract: A lens, having an optical power surface, which may have multiple radii portions or aspherical portions as well as spherical portions, is molded in a coined mold. A pair of core pins, positioned within the mold cavity during the lens forming process, will produce a pair of haptic-mounting holes within the lens. As the lenses are subsequently tumbled to remove flash, indentations will form adjacent to the haptic-mounting holes. These indentations allow for tangential attachment of the haptic to the lens which, in turn, enables maximum flexibility without exceeding the width of the optic.

Abstract: An implantable ophthalmic lens manufactured at least partly out of soft, elastic and pliable material substantially in the shape of a saucer is described. It includes an outer optical face forming one side of the lens, and an inner optical face forming the other side of the lens. A center portion of the inner optical face of the lens as well as the lens rim each have the shape of meniscus derived from the corresponding meniscus of a liquid precursor prior to solidification, the center portion meniscus and the rim meniscus being connected by an annular ring, all surfaces of the lens except the center portion of the inner optical face and the lens rim being replicas of a solid mold from which it is formed. The inner optical face center portion and the lens rim have the shape of a liquid precursor solidified in contact with an inert fluid.

Abstract: The polymethyl methacrylate (PMMA) or copolymer thereof used to produce one-piece intraocular lenses is modified by a compression molding process to produce a much tougher material with improved mechanical properties. The process takes material in rod form and compresses into lens blanks. The molded lens blanks receive little or no compression strain in the center 4 mm optic zone. The compression is limited to the periphery region outside the center 4 mm zone. The intraocular lens fabricated from the molded lens blank exhibits greatly increased haptic mechanical properties and resistance to breakage.

Abstract: A method is provided for applying a coating to an ophthalmic device by applying a coating to a face of the mold used to make the device and partially curing the coating, or, if the viscosity is sufficiently high, leaving the coating uncured. Then the liquid used to form the lens is poured into the mold and the liquid and coating are concurrently cured.

Abstract: A process for the extrusion of plastic plates with very finely structured surface using an extrusion system which is equipped with an extruder and a three roll polishing stack containing a roller with the structuring surface. The system is designed for coextrusion and the plastic plates are produced via two extruders as a coextrudate CX from a highly viscous basic molding compound BF and a low viscosity molding compound NF which is extruded on BF. The surface of said plates is structured via the three roll polishing stack. Fresnel lenses produced by the process may be used in solar collectors.

Abstract: A method for manufacturing light panels consisting of a plate shaped carrier with light conducting fibers fixed therein according to a given pattern. The method includes the steps of inserting the top end of each fiber from a fiber supply through openings in a mold. The mold is then filled with a castable plastic layer which is allowed to set to form a carrier. The carrier retains the fibers with the top ends of the fibers extending above the carrier. The top ends of the fibers extending above the carrier are melted by heat from a laser to form a melted nob at the top end of each fiber to act as a lense. A cover layer is applied on the carrier to embed the top end of each fiber and to protect the carrier. The carrier can be removed from the mold to allow the mold to be refilled with another castable plastic layer to form a next carrier for repeating the process. Removable plugs may be initially inserted into the openings of the mold to facilitate removal of the carrier at a desired angle.

Abstract: In order to provide an optical element with an aspheric surface, as well as a process by which the optical element can be mass-produced with high efficiency and consistent precision, the improved optical element with an aspheric surface includes a glass substrate and an overlying light-transmissive resin layer worked to have an aspheric surface. This optical element can be produced by molding a light-transmissive resin composition as it is cured between a glass substrate and a mold having an aspheric surfaced shape. The preferred light-transmissive resin has a Rockwell hardness of 40-80 on the M scale at -40.degree. C. to 60.degree. C.

Abstract: A resin-molded automotive lens, and a method for producing same, in which sink marks are prevented from being formed in a thin lens surface portion of the lens. In a resin-molded lens having a thin lens surface portion and a thick portion such as a seal leg portion or boss portions formed integrally with at least a part of this lens surface portion, the lens surface portion and the thick portion are formed in separate injections. That is, the thick portion is molded with resin integrally with another lens surface portion in advance, and thereafter the thin lens surface portion is molded with resin integrally with this thick portion, so that in this portion it is possible to reduce the influence of cooling of the resin when the lens surface portion is molded to thereby prevent sink marks from being formed in the lens surface portion.

Abstract: A transfer-pad printing composition comprising either a latex or solution coating composition comprising a coating vehicle and a monomeric or polymeric hydroxylated and/or carboxylated surface active wetting agent that is coating compatible with the pad surface such that the coating composition, provided in the shape of a pattern, is precisely imprinted on its surface and the pad can precisely transfer the design to another surface that is receptive to the coating. The process of transfer-pad printing with the composition. Also, articles made by such transfer printing.

Abstract: A method for producing a semiconductor device according to the present invention includes the steps of: disposing a functional element in each cavity of a multi-cavity circuit board, the multi-cavity circuit board having a number of cavities opening upward; overlaying a sealing resin sheet with a predetermined thickness containing, as a sealing resin, one of a thermoplastic resin and a thermosetting resin which is melted by heating and is cured by further heating on the multi-cavity circuit board so as to cover all of the cavities thereof; heating and pressurizing the sealing resin sheet on the multi-cavity circuit board so that the sealing resin sheet is melted to be filled in each of the cavities; and curing the molten resin filled in each of the cavities.

Abstract: An optical disk records digital information in optically-reflective layers that each vary in thickness between constructive interference of a monochromatic light and destructive interference of the said monochromatic light. The difference in the intensity of a reflected light beam subjected to interferometric constructive and destructive interference is used to communicate digital data from the optically-reflective layers and a detector. The optical disk provides for multiple layers of digital information that are tuned for interferometric response at correspondingly different monochromatic wavelengths of light. Another embodiment of the present invention is a mass-production process for making such an interferometric optical disk. Another embodiment of the present invention is a variation that includes layers that are emitting or absorbing depending on dopants.

Abstract: A polymeric infrared window (10) is described which comprises a sheet of polymeric material (14). Sheet 14 further may comprise a layer of molecular weave polymer material (34) fixed to a electromagnetic interference shield (32). In addition, a polymeric sheet (42) may be embossed with a binary defractive pattern (40) to create a polymeric defractive lens (38).

Abstract: Diffractive lenses having gradial zones (62, 70, 78, 90, 98, 106, 114) are formed by separately, sequentially spin casting and polymerizing successive radial zones of the lens to produce optical phase differences of 2.pi. between adjacent gradial zones. Diffractive lenses may be molded in plano-plano(60), plano-concave (68) and plano-convex (76) geometries and also may be combined with conventional plano-plano (84), convex-convex (92), plano-concave (100) and plano-convex (108) refractive lenses.

Abstract: A method of producing a microstructure bearing article that includes the steps of molding the microstructure on the base, curing the resin that forms the microstructure, and heat treating the microstructure. The heat treating is performed at a temperature that is at least equal to a normal glass transition temperature of the resin. The heat treating raises the glass transition temperature of the resulting polymer above approximately 333.degree. K. such that groove tip impression is reduced. Such articles are useful in backlit displays which are useful in computers and the like.

Abstract: A method of replicating an optically flat surface includes providing a plastic optical element having a machined flat surface. The machined flat surface includes a plurality of ridges thereon. A coating material is applied to an optically perfect flat and the optical element is rolled and positioned on the coating material applied to the optically perfect flat such that grooves between the ridges with the coating material. The coating material sandwiched between the optical element and the optically perfect flat is cured and the optically perfect flat is removed from the cured coating material.

Abstract: New intraocular lenses and methods for producing such lenses. In one embodiment, the intraocular lens includes an optic; and at least one fixation member, e.g., haptic, secured to and extending from the optic, the fixation member being made from a rotated item including a polymer, the rotated item being derived by placing an item having a thickness and the same chemical make-up as the rotated item between two surfaces so that the surfaces each contact the item and are separated by the thickness, and rotating at least a portion of one of the surfaces around an axis substantially parallel to the thickness, provided that the intraocular lens has increased tensile strength relative to a substantially identical intraocular lens made from the original item. Methods of making intraocular lenses are also included.

Abstract: A birefringent interference polarizer which may be fabricated from readily available materials using established coextrusion techniques is provided. The polarizer has a level of light absorption near zero and can be fabricated to polarize and reflect light of specific wavelengths while transmitting light of other wavelengths. The polarizer includes multiple alternating oriented layers of at least first and second polymeric materials having respective nonzero stress optical coefficients which are sufficiently different to produce a refractive index mismatch between the first and second polymeric materials in a first plane which is different from the refractive index mismatch between the first and second polymeric materials in a second plane normal to the first plane. The refractive index mismatch in the first plane is preferably at least 0.03.

Abstract: Disclosed is a method for obtaining composite material comprising a network of cross-linked polymer and fluid molecules. Such materials, using molecules of liquid crystal, are notably used in display screens. The originality of the disclosure lies in the drying, in supercritical phase, of the molecules that have enabled the preparation of the network. Generally, the operation of evaporation drying of the solvent leads to a deterioration of the network structure. With the method according to the invention, the network keeps its initial structure, making it possible to obtain high performance characteristics in scattering of light. Application to display screens and protection for detectors.No abstract figure.

Abstract: A lens/mirror tower (LMT) of a multiple-disk array, optical storage system includes a plurality of lens and mirror elements integrally formed on a monolithic, optically-clear substrate. There is a specific lens/mirror set for each recording disk surface of the optical storage device; however, the mirror elements are preferably configured as one reflective surface of the substrate. The lenses are molded onto the opposite surface in a single operation that fixes their relative positions. The LMT is generally fabricated using a lens replication process. Initially, a glass substrate is formed with a trapezoidal configuration. A lens array mold is also formed with a plurality of cavities arranged in overlapping pairs. The cavities are filled with optical-quality resin and the mold is applied to the surface of the substrate opposing the reflective angular, e.g., 45.degree., surface. Once cured, the resin serves as an array of lenses that are aligned with the optical paths to the objective lenses of the disk array.

Abstract: A lens, having an optical power surface, which may have multiple radii portions or aspherical portions as well as spherical portions, is molded in a coined mold. A pair of core pins, positioned within the mold cavity during the lens forming process, will produce a pair of haptic-mounting holes within the lens. As the lenses are subsequently tumbled to remove flash, indentations will form adjacent to the haptic-mounting holes. These indentations allow for tangential attachment of the haptic to the lens which, in turn, enables maximum flexibility without exceeding the width of the optic.

Abstract: A method for the preparation of optical ferrules containing cylindrical members utilizes a guide receiving the cylindrical member, a sleeve receiving a piston therethrough, and a pin extending into the sleeve. The method also includes biasing to position the piston, using fill gates to dispense polymer into a defined cavity, and employing a containment which secures the components together. Injection molded optical fiber ferrules made according to the apparatus and process exhibit superior properties.

Abstract: A method of making an intraocular lens including attaching a fixation member to an optic to form an IOL assembly with a length of the fixation member between a location on a peripheral surface of the optic and a distal end of the fixation member being elongated and substantially straight. The substantially straight length of the fixation member is permanently deformed into a curved configuration suitable for implantation in an eye of a patient.

Abstract: An improved intraocular lens has at least one filamentary haptic composed of a continuous matrix material interspersed with a toughening amount of discrete particles of a multistage, sequentially produced elastomeric polymer. An improved process for preparing a single-piece intraocular lens involves preparing a composite lens blank by molding pellets composed of a continuous polymeric material interspersed with particles of a multistage, sequentially produced elastomeric polymer about a central optic lens core so as to produce a single lens blank having a toughened annular region surrounding the central optic region, and then machining at least one filamentary haptic from the toughened annular region to prepare the lens.

Abstract: A method of producing a contact lens provided with an identifying mark is disclosed. According to this method, a printing liquid is first prepared by dissolving a pigment in an organic solvent which is permeable into a lens material for the contact lens. This printing liquid is applied to a predetermined portion of a lens surface of the contact lens, such that the printing liquid permeates into an interior of the lens, thereby to form a colored region on the lens surface. The colored region thus formed consists of a first portion permeating into the interior of the lens, and a second portion protruding from the lens surface. Then, the second portion of the colored region is removed so as to smooth the lens surface, whereby the identifying mark is constituted by the first portion of the colored region.

Abstract: Methods for producing intraocular lenses which can be non-surgically repositioned after being placed in an eye. Such methods include providing a lens blank at least a portion of which is a polymeric material having a glass transition temperature of at least about 40.degree. C., and forming from the lens blank an intraocular lens including an optic and a fixation member so that at least a portion of the fixation member is made of the polymeric material. The position of the optic in the eye can be changed by heating the fixation member to a temperature above the glass transition temperature.

Abstract: A method of forming dental products, such as dentures, denture relines, dental crowns, dental bridges and dental restorative materials, temporary crown, temporary bridge, provisional crown or provisional bridge, from two polymerizable paste compositions each having a complimentary component of a free radical catalyst system and a polymerizable acrylic compound. One of these paste compositions includes an oxidizing agent and a stabilizer and the other includes a reducing agent as components of a redox catalyst system for free radical polymerization. These paste compositions are mixed in a static mixer to form a polymerizing paste composition, which is then shaped into a dental prosthesis. A handheld mixing dispenser useful in carrying out this method, includes a static mixing conduit, and two containers enclosing the polymerizable paste compositions. The static mixing conduit encloses a static mixing member. The containers are adapted to be connected in fluid flow communication with the static mixing conduit.

Abstract: A continuous manufacturing method is provided by extruding a composite optical fiber from two polymeric solutions containing two different monomers having different refractive indices, and then allowing the monomers to diffuse in a diffusion region such that the two monomers are diffused into each other before the optical fiber is hardened.

Abstract: In the present invention dental prostheses are cured without the use of dental flasks using an electrically heated pressure vessel. The dental prosthesis is cured while in a plaster chamber which is placed in a curing container with ambient water. The apparatus includes a perforated table for supporting the curing container during heat curing. The vessel has a lid for sealing the top, an inlet for injection of compressed air, an outlet for exhausting of compressed air, and an electrical resistance heating means for heating water held in the vessel. The curing container holds ambient temperature water at a level which covers the plaster chamber prior to submerging the curing container in the vessel containing water at a temperature of 90.degree. C. to 100.degree. C. The table supports the curing container in the vessel so that the top edge of the curing container is above the level of water held by the vessel.

Abstract: An optical system to be incorporated in endoscopic instrumentation is provided. The optical system includes objective lens, relay lens and eye lens assemblies. The relay lens assembly includes at least one relay lens module for transferring an image between successive image planes. The relay lens module consists of two identical optical components in symmetrical arrangement relative to a center plane of symmetry. Each optical component includes a single curved lens and a doublet lens. In a preferred embodiment, the single and doublet lenses are thin lenses and are fabricated from polymeric materials. An illumination system is also provided and preferably includes a plurality of small diameter polymeric fibers in cooperation with a heat absorbing filter means.

Abstract: A first array of first lens-base elements is formed on a substrate with spacing therebetween. The first lens-base elements are heated so that the first lens-base elements melt to form first lenses having round surfaces. A separation layer is formed to cover the first lenses and the substrate. A second array of second lens-base elements is formed, the second lens-base elements being placed on a region where the first lenses are not formed so as to partly overlap with the first lenses. The second lens-base elements are also heated so that the second lens-base elements melt to form second lenses having round surfaces. The lens array includes the substrate and the first and second lenses.

Abstract: A method of forming an optical element on the surface of a substrate by ejecting a curable light guide forming liquid from a nozzle onto the substrate and curing the curable light guide forming liquid. A waveguide may be formed by moving the nozzle in a linear pattern over the surface of the substrate during ejection of the liquid from the nozzle. Curing the liquid may include exposing the liquid to ultraviolet radiation, and the radiation may be applied to only a small portion of the liquid. A multilayered waveguide may be formed by ejecting a further light guide forming liquid onto the first and curing it. A core and cladding may be formed simultaneously by ejecting core forming liquid from an inner tube and cladding forming liquid from an annulus about the inner tube. The waveguide may be formed in a groove, and a splitter may be formed by branching a second waveguide from a first, or by laying out two parallel waveguides and connecting them.

Abstract: Method, apparatus and composition for making and coating a plastic lens. The method includes disposing a liquid composition and a photosensitive initiator into a mold cavity and directing ultraviolet light to act on the lens forming material in the cavity to produce a lens therefrom. An improved postcure process and scratch resistant coating process is disclosed.

Abstract: The method for the fabrication of a curved back projection screen includes coating the screen before forming a sheet into the proper curvature. In one embodiment the sheet includes lenticulations to improve the perceived luminous intensity thereof. Through this method a back projection screen is provided that overcomes the manufacturing difficulties associated with previously known methods.

Abstract: A method for attaching haptics to an optic of an intraocular lens including the steps of providing the peripheral edge of the optic with at least one hole, inserting an end of the haptic into the hole, aiming a laser which emits radiation within the visible spectrum which is matched to the absorption spectrum of the haptic at a portion of the haptic within the hole and firing the laser so that the radiation passes through the optic essentially without absorption and is absorbed by the haptic, thereby causing the haptic to swell an amount sufficient to mechanically anchor the end of the haptic within the optic.

Abstract: A method for making improved optical quality lenses is described. The method includes arranging a mold having a molding surface, a curable optical quality resin composition, and a plastic lens preform of optical quality material such that the resin composition is disposed between, and in contact with, the plastic lens preform and the mold. Upon curing, the resin composition forms a cured plastic attached portion that is bonded to the plastic lens preform. The resin composition and plastic lens preform are selected such that the attached portion has a higher scratch resistance, a lower chromatic aberration, and/or a higher ease of edging than the lens preform.

Abstract: A method of continuously forming an integrally molded structure in a multiaxis rotational molding operation includes the steps of rotating a multisection mold assembly about at least three axes. A first freshly formed polymerizable mixture is flowed over surfaces of an enclosed mold cavity within the multisection mold assembly. The flowing of the first mixture over the mold cavity surfaces and formation of a first resin therefrom is monitored. A second freshly formed polymerizable mixture is flowed under pressure through an orifice into the mold cavity. A liquid stream of the second mixture is formed. The liquid stream is gelled as it advances through the mold cavity to form a continuous filament with structural integrity. The filament is contacted with the first resin formed within the mold cavity. The filament is distributed over the first resin in a preselected pattern. A third freshly formed polymerizable mixture is flowed over the filament pattern formed within the mold cavity with the second mixture.

Abstract: A first binary diffractive optical element has a multi-level surface relief phase grating structure on a substrate. The first binary diffractive optical element can be divided into regions commensurate with resolution requirements of the intended optical application and the diffraction efficiency of each region of the binary diffractive optical element measured. The lowest measured diffraction efficiency for a region of the first binary diffractive optical element will be taken as the reference efficiency. The diffraction efficiencies for all the regions of the binary diffractive optical element will be reduced region by region to the common value of the lowest measured diffraction efficiency by introducing compensating diffractive losses to the regions by a second, corrector binary diffractive optical element which has a binary surface relief phase grating structure on a substrate.

Abstract: A method for manufacturing eyeglasses includes the steps of: forming a lens unit; providing a mold unit which includes first and second mold halves, the first mold half having a support surface which conforms to a rear surface of the lens unit and a first frame defining surface which extends around a portion of the support surface, the second mold half having a complementary surface which conforms to a front surface of the lens unit and which defines a lens receiving space with the support surface, and a second frame defining surface which extends around a portion of the complementary surface and which defines a frame forming cavity with the first frame defining surface, the first mold half being formed with an air passage having a first open end which opens at the support surface; placing the lens unit fittingly in the lens receiving space such that a first positioning unit formed on the rear surface engages a second positioning unit formed on the support surface; activating a vacuum pump connected operably

Abstract: Diffractive lenses having gradial zones (62, 70, 78, 90, 98, 106, 114) are formed by separately, sequentially spin casting and polymerizing successive radial zones of the lens to produce optical phase differences of 2.pi. between adjacent gradial zones. Diffractive lenses may be molded in plano-plano (60), plano-concave (68) and planoconvex (76) geometries and also may be combined with conventional plano-plano (84), convex-convex (92), plano-concave (100) and plano-convex (108) refractive lenses.

Abstract: A birefringent interference polarizer which may be fabricated from readily available materials using established coextrusion techniques is provided. The polarizer has a level of light absorption near zero and can be fabricated to polarize and reflect light of specific wavelengths while transmitting light of other wavelengths. The polarizer includes multiple alternating oriented layers of at least first and second polymeric materials having respective nonzero stress optical coefficients which are sufficiently different to produce a refractive index mismatch between the first and second polymeric materials in a first plane which is different from the refractive index mismatch between the first and second polymeric materials in a second plane normal to the first plane. The refractive index mismatch in the first plane is preferably at least 0.03.

Abstract: A flexible circuit film (103) having a plurality of electrical tracings (118) is provided. A mold (102) having a cavity (112) capable of accepting the flexible circuit film (103) is provided. The flexible circuit film (103) is placed into the mold (102). A first optical portion (203) is molded with the flexible circuit film (103) in the cavity (112) of the mold (102) so as to join the flexible circuit film (103) to the first optical portion (203).

Abstract: A transparent molded article for optical applications made from silicon nitride and a coating thereon of oxidic silicon nitride formed by chemical reaction of the silicon nitride with oxygen. The moldings can be shaped, depending on the area of application, to give various articles, for example optical waveguides, prisms, sensor elements or lenses, and are used in all areas where high optical demands are made.

Abstract: A method is provided for casting a progressive addition lens from: a mold incorporating a spherical portion and an add zone; a preformed lens having a convex curvature correlated with the concave curvature of the mold; and a polymerizable resin. The method includes the steps of: placing a predetermined volume of resin into a cavity of the mold; placing the preformed lens into the mold such that a layer of resin spreads out and covers any intervening space between the lens and the mold; and displacing superiorly or nasally by a predetermined magnitude the optical center of the preformed lens with respect to the geometrical center of the mold.

Abstract: A transfer molded semiconductor method arranges a semiconductor chip on a flat die pad so that, at least one predetermined edge surface of the semiconductor chip extends or protrudes over a corresponding edge of the flat die pad. The predetermined edge of the die pad is arranged on the opposite side of a gate beneath a lead frame at the other side. The arrangement suppresses the formation of voids at a side surface of the semiconductor chip, e.g., the side surface opposite the gate at which resin is injected.

Abstract: A photopolymerizable resin is formed from between about 50% to 90% by weight of a polymerizable base component, between about 1% and 20% by weight of a cross-linker, between about 0.5% and 6% by weight of a photoinitiator, and between about 0.5% and 20% by weight of a viscosity control agent. Preferably the resin has a viscosity above 25 and below 130 centistokes at 68.degree. F. In a preferred embodiment, the resin includes between about 0.5% and 3.0% by weight of fumed silica or fine mesh silica as a viscosity control agent, and is cured under the combined influence of heat and actinic radiation to form a clear, hard, plastic optic having a refractive index of greater than or equal to 1.50 and a scratch resistance greater than or equal to 1.0 in a Bayer abrader and hazemeter. A method and apparatus for forming improved ophthalmic lenses is also included.

Abstract: A circuit element for microwave and millimeter-wave bands and a method of producing the same. A dielectric line is made of a pure dielectric resin. A high-frequency wave absorbing member is made of a pure dielectric resin containing at least one of first, second and third powders dispersed therein. The first powder having a high specific inductive capacity, the second powder having a high magnetic permeability, and the third powder having a high specific resistance. A compression molding technique is used to fusion bond the high-frequency wave absorbing member to the dielectric line.