Matches 201 - 250 out of 461 < 1 2 3 4 5 6 7 8 9 10 >
Match Document Document Title
5785903 Method of molding high-viscosity materials  
This invention provides a method of molding which can feed the high-viscosity material quickly and accurately as well as with good operability. For achieving quick heating and cooling cycles in a...
5780140 Retroreflective microprismatic material with top face curvature and method of making same  
Retroreflective material is disclosed which is formed of an array of microprisms which reflect light more uniformly by forming a concave curvature in the base face of the prisms.
5778126 Ferrule for optical fiber and optical connector using a ferrule  
A ferrule includes a cylindrical ceramic main body and a metal or plastic back body mated to an end of the ceramic main body. The cylindrical ceramic main body has an axial bore adapted for holding...
5770119 Laser demolding method  
An automated demolding apparatus for reliably and repeatedly mechanically separating contact lens mold portions of a mold assembly without damaging the contact lens formed there between. Before...
5767200 Optical resin materials with distributed refractive index  
An optical resin, of which the refractive index continuously changes in a specific direction, is produced by filling a polymerization container with a mixed solution containing at least one type of...
5759318 Apparatus and method for releasably fusing mold lens pieces  
A method and apparatus for releasably securing mold pieces used to mold an artificial eye lens, for example a hydrophilic contact lens. The apparatus includes an ultrasonic welding system to...
5759470 Method for creating embedded crossover pattern baselayer  
The invented methods provide a means for reducing or eliminating manual astments that are required during the fabrication (winding) of fiber optic dispensers. This reduction is accomplished through...
5759221 Method of press molding glass optical elements  
A method of press-molding glass optical elements by press-molding glass, having a high melting point, at a temperature of 650° C. and higher using a die for press-molding glass optical elements...
5753150 Low oxygen molding of soft contact lenses  
A process for providing degassed complementary concave and convex lens molds to filling and mold assembly stations in a continuous or semicontinuous automated soft contact lens manufacturing...
5733585 Apparatus for rotationally aligning a feature of an optical tool with a gate in an injection molding apparatus  
A selectively, rotatably adjustable riser pin for aligning a predetermined characteristic on an asymmetrical mold surface with the gate of an injection molding machine for enhanced flow dynamics of...
5730911 Process for the manufacture of a substrate made of transparent organic glass and substrate thus obtained  
The process comprises: (a) the introduction into a mould of a composition which is polymerizable into a transparent organic glass (b) the polymerization of the composition under conditions...
5723076 Method of producing large polycrystalline plates from optical and scintillation materials  
Method of manufacturing large polycrystalline plates from optical and scintillation materials consists in heating a crystalline blank up to the temperature of 0,5T melt . <T<T melt ., where T...
5716633 Collagen-hydrogel for promoting epithelial cell growth and regeneration of the stroma and artificial lens using the same  
A collagen-hydrogel for promoting epithelial cell growth and regeneration of the stroma is shown. Also shown is an optical lens for the eye, fabricated from the collagen-hydrogel, which, when...
5712327 Soft gas permeable contact lens having improved clinical performance  
A hydrophilic soft gas permeable contact lens having substantially improved clinical performance by the provision of a sufficient higher proportion of hydroxy acrylic units to silicon units in the...
5693738 Composition for urethane-base plastic lens, urethane-base plastic lens obtained from the composition, and process for the production of the plastic lens  
A composition for a urethane-base plastic lens, comprising: (a) at least one ester compound selected from the group consisting of isocyanate compounds, isothiocyanate compounds and...
5693268 Wedge demolding of cast lens mold assemblies  
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...
5681871 Method for preparing ultraviolet radiation absorbing contact lenses  
Disclosed is a process for producing an ultraviolet radiation absorbing contact lens from a lens shaped polymer having hydroxyl groups pendant therefrom and having dispersed therein a UV absorbing...
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...
5674283 Implantable ophthalmic lens, a method of manufacturing same and a mold for carrying out said method  
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...
5671193 Rotary polygonal mirror and method of manufacturing the same  
A rotary polygonal mirror for a deflection scanning device includes a regular prism-shaped main body portion consisting of a resin material, a projecting portion which projects from an upper...
5670096 Retroreflective article comprising a transparent base sheet and nacreous pigment coating, method for making such a base sheet, and method for making a forming master  
A retroreflective article comprising a transparent base sheet having first and second broad faces, the second face being substantially planar and the first face having an array of substantially...
5662979 Substrate for optical disc  
A substrate according to the present invention is applicable to an optical disc on which an information signal is recorded. Formed on the substrate are prepits in the form of irregularities which...
5645665 Intraocular lens fabrication  
This invention describes a method for fabricating an intraocular lens made rom clear Teflon™, Mylar™, or other thermoplastic material having a thickness of about 0.025 millimeters. These...
5635580 Process for the production of polyurethane lens  
The present invention relates to a process for the production of a polyurethane lens, which comprises the step (a) of providing a polyisocyanate compound and two or more polythiol compounds which...
5629074 Durable polymeric optical systems  
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...
5618474 Method of forming curved surfaces by etching and thermal processing  
A smooth contoured structure is formed from a planar surface by etching mesas of equal height into the surface and heat treating the structure to mass transport material above the desired contour...
5605656 Liquid filling method and lens manufacturing method  
A liquid filling method and in particular a lens material liquid filling method suitable for manufacturing a plastic lens. A thermal sensing portion (2a) of a temperature sensor (2) is set and kept...
5601627 Method for molding optical element  
There is disclosed a method for molding an optical element, by preparing an upper mold member and a lower mold member for press molding a glass material, heating the mold members together or...
5593621 Method of manufacturing plastic optical transmission medium  
A polymer is placed and heated within a cylinder 1. Then the polymer is subjected to a pressure and extruded in the form of fibers from a nozzle 3. When a diffusible material is injected from a...
5593620 Apparatus and method for releasably fusing lens mold pieces  
A method and apparatus releasably secure mold pieces used to mold an artificial eye lens, for example a hydrophilic contact lens. The apparatus includes an ultrasonic welding system to provide...
5567363 Manufacturing method of a polymer GRIN lens using sulfonation  
The present invention relates to a manufacturing method of a polymer GRIN lens which is used for focusing light in connections for example between two or more optical fibers and between an optical...
5556633 Drug delivery ophthalmic insert and method for preparing same  
A drug delivery ophthalmic insert prepared by forming a water soluble solid polymer into a paste by the addition of a small fixed amount of water, drying the paste and then sectioning the paste...
5539971 Method of manufacturing an endoscope  
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...
5534038 Tinting hydrogel materials with vat dyes  
Disclosed are processes for tinting hydrogel materials, such as contact lenses, by dissolving a leuco sulfate ester of a vat dye in an compatible monomer solution, adding an oxidizing initiator to...
5526454 Method for producing optical polymer components having integrated fibre-chip coupling by means of casting technology  
A method is proposed for producing passive and/or active optical polymer components having integrated fibre-chip coupling by means of casting technology. For this purpose, the master structure is...
5524419 Method and apparatus for molding contact lenses and making their container  
An improved, automated method and apparatus for molding contact lenses generally comprises the steps of: (1) forming anterior and posterior mold cavities in longitudinally spaced relation in first...
5519069 Contact lenses and materials and methods of making same  
An interpenetrating network copolymer, method of producing same, and method of producing optical lens blanks and finished lenses therefrom. The method broadly involves the preparation of first and...
5516467 Process for producing a tinted contact lens  
A process for producing a tinted contact lens, which includes dissolving a soluble vat dye in a monomer capable of dissolving the soluble vat dye therein, mixing the monomer having the soluble vat...
5493623 PZT fiber optic modulator having a robust mounting and method of making same  
A piezoelectric fiber optic phase modulator having a mount at a nodal point of the vibratory system of the modulator. The modulator is excited with an electric field applied in a direction parallel...
5481633 Method and optical device produced of optical polymer components having integrated vertical coupling structures  
A method of producing passive and/or active optical polymer components (10) having vertical coupling structures (45), wherein at least one structure (22) for receiving a light waveguide (40; 46),...
5454055 Method of making a cover for an integrated optical circuit, cover for an integrated optical circuit, and integrated optical circuit made with this cover  
A method for making a cover for an integrated optical circuit, a cover for an integrated optical circuit, and an integrated optical circuit made with this cover are proposed. The method serves to...
5438421 Orientation film of liquid crystal having bilaterally asymmetric ridges separated by grooves  
An orientation film for a liquid crystal display. The film is formed on a substrate and has a first irregular form repeated in a first direction and a second irregular form repeated in a second...
5435943 Method and apparatus for making an ophthalmic lens  
A method and apparatus for making an ophthalmic lens pumps monomer into one end of a gas permeable tube along its interior length while a chamber surrounding the gas permeable tube is maintained at...
5421848 Method for fabricating a lens having a variable refractive index  
The invention presents a method for the fabrication or production of three-dimensional lenses with a variable refractive index by wrapping a material with a given refractive index. It is preferred,...
5394498 Optical fiber array and process of manufacture  
A fiber optical array with precision fiber and positioning and a process for manufacturing such an array. The position of the ends of the optical fibers depends upon placement within a target that...
5389708 Sulfur-containing acid phosphoric ester internal release agent  
An internal release agent comprises a sulfur-containing acid phosphoric esters selected from the group consisting of thiophosphoric acid esters and dithiophosphoric acid esters of the formula,...
5376313 Injection molding a plastic assay cuvette having low birefringence  
A plastic assay cuvette having the desired optical properties for the analysis of a test sample or reaction mixture thereof, and a method for making such plastic assay cuvette, are described. The...
5375180 Process tolerant reverse delta-beta directional coupler switch and method of fabricating same  
A three or more section reverse Δβ directional coupler designed to operate at a number of coupling lengths (L/l) selected from a region of a corresponding switching diagram where the cross and...
5367593 Optical/electrical connector and method of fabrication  
An optical/electrical connector including a molded base having a well and a plurality of grooves extending from the well to a first outer edge of the base and alignment guides associated with the...
5367596 Method of making a modulated fiber optic image scanner  
A method of making an optical scanner is disclosed that includes light transmitting and receiving optical fibers to illuminate and scan an image to be copied, transmitted or stored.
Matches 201 - 250 out of 461 < 1 2 3 4 5 6 7 8 9 10 >