Matches 301 - 350 out of 457 < 1 2 3 4 5 6 7 8 9 10 >
Match Document Document Title
5571882 Polymersable carbohydrate esters, polymers therefrom and their use  
Compounds of formulae I and Ia R--Y--CO--R 3 --CO--O--A (I), R--Y--CO--R 3 --CO--O--CH 2 --A 1 (Ia), wherein R is a radically polymerizable...
5570143 Toric lens with axis mislocation latitude  
A toric lens for axis mislocation correction has optical topography on at least one surface of the lens which induces a depth of field effect on the eye and enables the principle meridians of power...
5555038 Unitary lens for eyewear  
A unique unitary lens for eyewear includes right and left lens regions formed of substantially spherical portions. The lens provides improved aerodynamics, aesthetic appearance and eye protection...
5550600 Ophthalmic lens having a negative refractive power  
An aspherical ophthalmic lens having a negative refractive power, an axis of symmetry and a periphery includes front and rear refractive surfaces. The front refractive surface has a meridional...
5502141 Method of making thiol methacrylate or acrylate and a lens made therefrom  
A thiol methacrylate or acrylate compound represented by the formula (1) or (2): ##STR1## wherein R 1 is H or CH and X is selected from: ##STR2## wherein R 1 is H or CH 3 and m is an integer of...
5478824 Adherent corrective lens  
A corrective lens that is removably adherent to, and substantially in contact with, a pane of a pair of spectacles without the use of a mechanical retention device, and that has at least one curved...
5457502 Lens for eyeglasses in which plurality of lenses formed of curved surface are coupled integrally  
Upper lens formed of a portion of a sphere having radius R 2 and lower lens formed of a portion of a sphere having radius R 1 are manufactured integrally by molding for forming the lens of...
5440358 Optical lens comprised of high surface hardness transparent resin  
The present invention relates to a high surface hardness transparent resin having excellent scratch resistance, heat resistance and chemical resistance, a glazing material, a protective cover for...
5428411 Protective eyewear device and lens therefor  
Protective eyewear for sports activities and the like having a resilient rigid frame is disclosed. Included is a sealing area around the eyes having a web which diverges outwardly in every...
5422422 High refractive index plastic base on an alkylthiol and an alkylpolythiol ester  
The invention relates to a high refractive index plastic produced by reaction of an alkylthiol with a multiply unsaturated monomer, wherein said alkylthiol (A) has at least 2, and up to 20 carbon...
5420213 Polysiloxanes, methods of making same and high refractive index silicones made from same  
A new class of polysiloxanes is disclosed. Such polysiloxanes have the formula ##STR1## wherein each R and R 4 is independently selected from alkyl radicals, substituted alkyl radicals, aryl...
5385955 Organosilane coating composition for ophthalmic lens  
A radiation-curable coating composition for ophthalmic lens is disclosed which comprises a mixture of a monoepoxysilane, colloidal silica, an alkylalkoxysilane or tetraalkoxysilane, and an...
5384606 Diffractive/refractive spectacle and intraocular lens system for age-related macular degeneration  
An ophthalmic lens system (11), including an IOL (15) having a negative IOL lens portion (22) and a positive lens (13) adapted to be outside the eye and direct light toward the negative IOL lens...
5373332 Plastic spectacle lens and method for making  
A plastic spectacle lens includes a protuberance portion intergrally formed with a peripheral portion of one of the concave and convex sides thereof for indicating information thereof. Indication...
5353072 Aspherical spectacle lens  
In an aspherical spectacle lens having a negative degree and an aspherical surface of rotational symmetry located on an object side, a surface power of the aspherical surface of rotational symmetry...
5343260 Composite ophthalmic lenses and their manufacture  
This invention is directed to the fabrication of composite lenses consisting of a transparent thermoset polymer exhibiting an index of refraction of at least 1.58 and a thin glass element of...
5335026 Eyeglass lens  
A lens for eyeglasses which corrects an astigmatism includes a first refracting surface and a second refracting surface. Each refracting surface has an optical center and a periphery. At least one...
5323192 Method and packaging system for facilitating fabrication of laminated lenses  
Fabrication of an eyeglass lens to meet a specific ophthalmic prescription is simplified by arranging back lens wafers of different sphere powers and cylinder corrections in order of the through...
5323191 Composite ophthalmic lenses  
This invention is directed to the production of glass-plastic lenses consisting of a thin glass element bonded to a relatively thick transparent lens or lens preform made of poly(diethylene...
5319007 Optical plastics and methods for making the same  
Ophthalmic lens compositions comprising a cured polymer mixture of (A) an unsaturated polyester resin composition, (B) a monomer of the formula ##STR1## (C) an optional vinyl, acrylate monomer, or...
5311356 Apparatus for simulating effects of optical lenses and methods for production and use  
Apparatuses, and methods for their production and use, with which the visual effects of optical lenses can be accurately and credibly simulated. The invention permits the simulation of the visual...
5272013 Articles made of high refractive index phenol-modified siloxanes  
Articles of manufacture having improved refractive index made of phenol-modified siloxanes are described. One use of these articles is as optical lenses.
5258024 Method of manufacture of a lens of transparent polymer having a modulated refractive index  
The present invention relates to a method of manufacture of an optical lens providing refractive index modulation, characterized in that, starting from a lens of transparent hydrophilic polymer...
5253111 Cemented plastic lens  
A cemented plastic lens is formed of two plastic lenses made of dissimilar synthetic resin materials having different coefficients of thermal expansion. The lenses have mating surfaces that have...
5239321 Eyelash supported correcting lens  
An optical lens is mounted to the eyelash of the upper eyelid, hanging thereon in spaced register with the wearer's eyeball cornea. In a first embodiment, the lens is carried by a pair of endwisely...
5235441 Holographic lenses  
A method of constructing holographic lenses for correction of a person's deficiencies comprises splitting a filtered laser beam onto an object under consideration and thence to a photographic film,...
5235357 Spectacle lenses having an inside-out conicoidal front surface and method for forming same  
Plus and minus power ophthalmic spectacle lenses for the correction of distance vision incorporating a convex aspherical front surface are provided. The front surface of the invention is described...
5229885 Infinitely variable focal power lens units precisely matched to varying distances by radar and electronics  
An automatic fast focusing infinitely variable focal power Lens Unit, to supply the infinitely variable focal power as required. The Lens Unit consists of two lenses, one of which is stationary,...
5220358 Edge coating for laminated lenses  
This invention is primarily directed to edged three-layer ophthalmic lenses having a coating covering the edge of the lens. The coating provides a cushion between the lens and an eyeglass frame and...
5214116 Resin derived from sulfur-containing unsaturated compound and having a high refractive index  
There is provided a resin having a high refractive index. The resin is a polymer comprising units derived from a sulfur-containing unsaturated compound. The present invention also provides novel...
5208614 Concavely indented lenses for eyeware  
Disclosed is an arcuately molded lens for use in active eyewear, having along the bottom edge of each right and left lens regions at least one downwardly concave indented area. The indented area...
5191061 Resin for high-refraction lens containing a sulfur-containing aromatic(meth)acrylate and a mercapto compound  
A cured resin for high-fraction lenses is disclosed, which is obtained by polymerizing a composition comprising (A) from 70 to 99 parts by weight of a sulfur-containing aromatic (meth)acrylate...
5187505 Laminated lens wafers  
A series of back wafers for a laminated ophthalmic lens, wherein successive members of the series have a diopter difference in their concave curvature which is sufficiently small to enable a member...
5153619 Flexlense  
An eye safety wear improvement, consisting of a flexible, adhesive, magnification lens, with a diopter power ranging from +1.25 to +4.00 and being adaptable to any eye protection goggles or glasses...
5148205 Ophthalmic lens having a changing refractive index  
An ophthalmic lens having a front and an eye-facing boundary surface and a varying refractive index, which contributes to the correction of aberrations. The ophthalmic lens is distinguished by...
5131738 Lens blank  
The present invention provides an aspherical spectacle lens blank for a normal, non-aphakic eyeglass wearer. The lens blank is generally circular in shape and includes a central circular zone which...
5132384 Optical material of low specific gravity and excellent impact resistance, optical molding product using the optical material and manufacturing method thereof  
The present invention discloses an optical material having excellent transparency, impact resistance and heat resistance and having a low specific gravity and a high refractive index comprising a...
5124734 Opthalmic lens  
An ophthalmic lens that includes a construction that provides a static grading or some other means that yields a nonuniform power function which depends on the surface of the lens. The lens also...
5094520 Goggles' lenses  
An axiosymmetric eccentric spherical polycarbonate lens (2) for goggles (1), comprising inner (7) and outer (8) spherical surfaces defined by centers of curvature 0 1 and 0 2 and by radii R 1 ...
5093447 Ophthalmic device formed of a copolymer plastic material from ethylenic siloxanylalkoxy ester  
Comfortable, oxygen permeable hard and semi-hard contact lenses are made from the copolymer of ethylenically unsaturated siloxanylalkoxy ester monomer, ethylenically unsaturated fluorocarbon ester...
5084545 Resin having a large refractive index, lenses comprising the resin and process for preparing the lens  
The present invention relates to a process for producing a resin useful in plastic lenses, to plastic lenses containing the resin and to a process for producing the lenses.
5073021 Bifocal ophthalmic lens constructed from birefringent material  
A dual focal length ophthalmic lens is formed from a birefringent material with its fast and slow axes perpendicular to the user's visual axis. The dual focal property arises due to the differing...
5052337 Lens dyeing method and apparatus comprising heating element contacting dyeing tank, heat controller and sensor for dye solution temperature  
An apparatus and process for tinting plastic material; specifically, polycarbonate and other plastic eyeglass lenses. The dye solution has an elevated boiling point which allows for dyeing of the...
5050979 Eyeglass lens  
An improved eyeglass lens which includes a front and back surface, one of which is refractive surface. The lens is defined by a meridian on the refractive surface which substantially increases for...
5050980 Aspherical spectacle lens  
An aspherical spectacle lens having a positive power. The lens has a front refractive surface and a rear refractive surface. The curvature of an arbitrary meridian passing through a predetermined...
5050981 Lens design method and resulting aspheric lens  
An aspheric lens for providing improved vision and a method for generating such a lens is described. The lens provides a sharp image focus while minimizing image aberrations. The method utilizes...
5044743 Corrective lens system  
A corrective lens system with selectable optical characteristics includes a lens element for placement in the optical path of a human eye ahead of the retina of the eye and a polarizer element for...
5042935 Blanks for making prescription eyeglass lenses  
In a method and apparatus for making a lens for a pair of prescription eyeglasses a lens blank is shaped and finished on one of its major surfaces through the use of a machine controlled by the...
5033838 Gradient index, null geometrical power unifocal ophthalmic lens  
A unifocal ophthalmic lens has a part-spherical concave surface and a part-spherical convex surface. Its refractive index varies radially from its optical axis to its periphery. It has a null...
5033839 Method of minimizing the maximum thickness of a unifocal ophthalmic lens and gradient index unifocal ophthalmic lens obtained by application of this method  
A unifocal ophthalmic lens has part-spherical concave and convex surfaces. Its refractive index varies radially from its optical axis to its periphery. The variation of the refractive index is...
Matches 301 - 350 out of 457 < 1 2 3 4 5 6 7 8 9 10 >