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| Number | Title | Issue Date |
| 7985357 | Method of resin-sealing and molding an optical device There is provided a method of sealing and molding an optical device with resin by employing a die including a top piece, a bottom piece, an intermediate piece, and a mold release film pinched between the bottom and intermediate pieces and thus tensioned as prescribe... | 07/26/2011 |
| RE40152 | Injection molded thermoplastic spectacle lens suited for fully automated dip hardcoating Plastic injection-compression multi-cavity molding of flash-free improved-cleanliness thermoplastic spectacle lenses (16) are suitable to be robotically dip hardcoated. Special spring-loaded (25, 26) molds having variable-volume mold cavities are used ... | 03/18/2008 |
| 7268198 | Silicone hydrogel contact lenses Silicone hydrogels, including vinyl carbonate endcapped polysiloxanes containing a fluorinated side chain, are useful as biomaterials, especially hydrogel biomaterials, including contact lens materials. The hydrogels are the hydrated polymerization product of a mono... | 09/11/2007 |
| 7141248 | Methods of producing intraocular lenses Methods of producing an intraocular lens include introducing a solution into a lens forming enclosure, wherein the solution comprises discrete crosslinkable units of a size small enough to provide an optically clear solution while contributing to a high refractive i... | 11/28/2006 |
| 7050691 | Optical waveguide and method of manufacturing the same A method of manufacturing an optical waveguide having a core and a clad. The method includes forming a first clad by applying a resin on a substrate and curing the resin, applying a core material between a recessed mold which has a recess having a shape identical to... | 05/23/2006 |
| 7051290 | Graphical interface for receiving eyeglass prescription information A high volume lens curing system is described. The high volume lens curing system is configured to cure multiple eyeglass lenses in a continuous manner. The lens curing system includes a computer-implemented method configured to collect prescription information, sav... | 05/23/2006 |
| 6997693 | Casting mold half and casting mold for producing contact lenses A casting mold half (5, 5a) for producing contact lenses comprises a mount (50) and an insert (51, 51a), which is arranged at one end of the mount (50) and can be connected to the mount (50) and which has a shaping su... | 02/14/2006 |
| 6998073 | Pulse extraction of ocular medical devices A method of extracting residual materials from a polymeric, ophthalmic biomedical device, such as a contact lens, by using a mixture comprised of a primary solvent, such as carbon dioxide, and a polar co-solvent, such as isopropanol. By exposing the device to the co... | 02/14/2006 |
| 6913715 | Lens molds with protective coatings for production of contact lenses and other ophthalmic products This invention relates to the preparation of molds for the production of contact lenses and other ophthalmic articles. By using an inorganic material to coat the optical surfaces and sidewalls of mold parts made from clear-resin materials, manufacturers can produce ... | 07/05/2005 |
| 6896417 | Hollow cast article with slit, method and apparatus for production thereof In the production of a hollow cast article having a slit, the release of a hollow cast product from a mold is carried out while opening the hollow cast product. In one embodiment, a core provided with recessed parts (or projected parts) formed in a slit forming part... | 05/24/2005 |
| 6869549 | Method and mold for making ophthalmic devices This invention provides a method and a mold for improving the release of a molded ophthalmic device from a mold. The method comprises the steps of: providing a first mold half and second mold half each having opposing top surfaces at least one of which has been holl... | 03/22/2005 |
| 6821108 | Plastic castings molds The invention is concerned with the problem that with known plastic casting moulds, especially those of polypropylene, the lenses produced with these moulds have a slippery surface. The invention solves this problem through the use of polymers which are notable for ... | 11/23/2004 |
| 6638451 | Plastic casting molds The invention is concerned with the problem that with known plastic casting molds, especially those of polypropylene, the lenses produced with these molds have a slippery surface. The invention solves this problem through the use of polymers which are not... | 10/28/2003 |
| 6517995 | Fabrication of finely featured devices by liquid embossing Elastomeric stamps facilitate direct patterning of electrical, biological, chemical, and mechanical materials. A thin film of material is deposited on a substrate. The deposited material, either originally present as a liquid or subsequently liquefied, is... | 02/11/2003 |
| 6365329 | Process for making multiple data storage disk stampers from one master A method of making a stamper for use in a data storage disk molding process. The method includes making a first stamper including the steps of providing a stamper body having an information layer thereon. The information layer is covered with a first meta... | 04/02/2002 |
| 6201036 | Light-curable polymer material, method for making an elastic intraocular lens, and an elastic intraocular lens A light-curable polymer material for making an intraocular lens is a mixture of components consisting of oligourethanemethacrylate, octylmethacrylate, oligocarbonatemetharcrylate, 2,2-dimethoxy-2-phenylacetophenone and 2,4-ditretbutylortoquinone, wherein ... | 03/13/2001 |
| 6190838 | Process for making multiple data storage disk stampers from one master A method of making a stamper for use in a data storage disk molding process. The method includes making a first stamper including the steps of providing a stamper body having an information layer thereon. The information layer is covered with a first meta... | 02/20/2001 |
| 6187888 | Cast molding material for plastic lens and process for the production of plastic lens A cast-molding material for a plastic lens which is almost free from causing defective dyeing when dyed, and a process for producing plastic lenses almost free from causing defective dyeing, the cast-molding material containing, as essential components, a... | 02/13/2001 |
| 6171529 | Method of releasing a transparent polymer material from a mold and its use in the fabrication of a transparent polymer material article such as an ophthalmic lens A method of releasing from the mold a transparent polymer material article formed in a cavity of a two-part mold by polymerizing a liquid polymerizable substance includes the step of uniformly heating the article in the mold to a mold release temperature ... | 01/09/2001 |
| 6024902 | Injection molded paired thermoplastic spectacle lenses suited for fully automated dip hardcoating Plastic injection-compression multi-cavity molding of flash-free improved-cleanliness thermoplastic spectacle lenses (16) are suitable to be robotically dip hardcoated. Special spring-loaded (25, 26) molds having variable-volume mold cavities are used in ... | 02/15/2000 |
| 5982565 | Plastic lens and method of making the same A plastic lens includes an optically functioning section, a flange section disposed at an outer periphery thereof, a reference surface formed at an outer peripheral portion of the flange section and adapted to become a reference for attachment, and a tape... | 11/09/1999 |
| 5939136 | Process for preparation of optical fiber devices using optical fibers with thermally removable coatings A method of making an optical fiber device, which comprises the steps of providing an optical fiber element comprising an optical fiber having at least one thermally removable coating thereon, and thermally removing all or a predetermined portion of the t... | 08/17/1999 |
| 5853627 | Plastic molding apparatus and method A plastic molding apparatus and method employs a pair of dies having at least one cavity with a mirror surface and wherein a plastic base material which is pre-molded is inserted into the cavity and clamped by the pair of dies. The plastic base material i... | 12/29/1998 |
| 5849222 | Method for reducing lens hole defects in production of contact lens blanks Improved homogeneity and uniformity of surface energy characteristics in a mold surface for hydrophilic contact lens production is achieved with the temporal application of a surface active agent such as Tween 80, to facilitate wetting of the optical surf... | 12/15/1998 |
| 5820895 | Conductive probe for heating contact lens mold assemblies during demolding Demolding apparatus for reliably and repeatedly mechanically separating contact lens mold assemblies without damaging the contact lens formed therebetween. The mold assembly includes a frontcurve mold having a central mold section with a surrounding flang... | 10/13/1998 |
| 5750060 | Method and apparatus for injection compression molding and ejecting paired thermoplastic spectacle lens suited for fully automated dip hardcoating Plastic injection-compression multi-cavity molding of flash-free improved-cleanliness thermoplastic spectacle lenses (16) are suitable to be robotically dip hardcoated. Special spring-loaded (25, 26) molds having variable-volume mold cavities are used in ... | 05/12/1998 |
| 5718849 | Method and apparatus for injection-compression molding & ejecting paired thermoplastic spectacle lens suited for fully automated dip hardcoating Plastic injection-compression multi-cavity molding of flash-free improved-cleanliness thermoplastic spectacle lenses are suitable to be robotically dip hardcoated. Special spring-loaded molds having variable-volume mold cavities are used in an injection-c... | 02/17/1998 |
| 5679385 | Apparatus for treating an ophthalmic lens mold An apparatus for causing the polymerized excess monomer to separate from a molded lens by increasing the surface energy of the flange area of one mold piece, causing the polymerized excess monomer to stick thereto. Specifically when manufactured under ine... | 10/21/1997 |
| 5674557 | Method for transiently wetting lens molds in production of contact lens blanks to reduce lens hole defects Hydrophilic contact lens molds are transiently modified to provide a water dynamic contact angle equal to or less than 100° by treatment with a wetting agent which may be water or a surfactant composition which provides a mold surface having a water wett... | 10/07/1997 |
| 5573715 | Method for treating an ophthalmic lens mold An apparatus and method for causing the polymerized excess monomer to separate from a molded lens by increasing the surface energy of the flange area of one mold piece, causing the polymerized excess monomer to stick thereto. Specifically when manufacture... | 11/12/1996 |
| 5358672 | Method for removing finished articles from glass, plastic or metallic molds A method for demolding a molded article from a mold assembly having at least one mold with a molding surface includes the steps of: providing at least one tape segment on the molding surface of the mold before performing the molding process such that the ... | 10/25/1994 |
| 5326505 | Method for treating an ophthalmic lens mold An apparatus and method for directing accelerated electrons to at least part of one surface of one ophthalmic mold piece prior to filling with monomer and lens polymerization. In particular it has been found that generation of the ionized oxygen by means ... | 07/05/1994 |
| 5316702 | Method of producing durable bonds between an optical preform and an optical resin layer cast on the preform surface A method of casting an ophthalmic optic is described. A mold, an optical preform and a polymerizable resin are provided. The resin is disposed between the mold and the optical preform. The preform and the resin interact to produce a contact angle between ... | 05/31/1994 |
| 5294379 | Laser assisted demolding of ophthalmic lenses An apparatus and method for removing a molded ophthalmic lens from between the mold portions in which it is produced. A source of intense electromagnetic radiation, preferably a carbon dioxide (CO2) laser of about 80 Watts at a wavelength of 10... | 03/15/1994 |
| 5271875 | Method for molding lenses A mold assembly includes first and second mold sections having respective first and second mold cavity defining surfaces, the first mold cavity defining surface terminating in an encircling peripheral rim and the second mold cavity defining surface termin... | 12/21/1993 |
| 5264161 | Method of using surfactants as contact lens processing aids An improved method for manufacturing hydrophilic polymeric devices wherein surfactants are added to the hydration bath to assist in the mold release and processing of hydrophilic polymeric devices, especially hydrophilic contact lenses.... | 11/23/1993 |
| 5254000 | Organic polymer lens mold A mold for an organic polymer, ophthalmic lens element has separate upper and lower mold members with each mold member being composed of a thermoplastic polymer. The lower mold member has a central, bowl-shaped cavity with contours that conform to those o... | 10/19/1993 |
| 5230840 | Method of manufacturing thermoplastic/resin molded optical member A method of manufacturing thermoplastic resin molded optical members comprising a thermoplastic resin material into a mold, defoaming thermoplastic resin material in vacuo at a specific temperature for causing the loaded thermoplastic resin material to me... | 07/27/1993 |
| 5204126 | Mold surfaces with ultra thin release films A film forming composition including a film forming substance having amphiphilic molecules and being dispersed in a gel-like carrier having a non-liquid state below about 20° C. The carrier stabilizes the film forming substance, and inhibits diffusion of... | 04/20/1993 |
| 5178800 | Method for forming plastic optical quality spectacle lenses A fast, relatively inexpensive method and simple is disclosed for producing a finished plastic multifocal or progressive lens from a preformed lens which has a predetermined lens correction (i.e., curvature or prescription) at its optical center. The disc... | 01/12/1993 |
