Matches 51 - 100 out of 250 < 1 2 3 4 5 >
Match Document Document Title
6953248 Progressive power lens  
A progressive power lens belonging to a series of lenses according to the present invention is provided. If a first lens and a second lens randomly chosen from the series of progressive power...
6948816 Method of manufacturing progressive power spectacle lens  
According to a method of manufacturing a progressive power spectacle lens, available vertex powers are divided into a plurality of vertex power groups, one surface of a spectacle lens has been...
6945649 Method for the production of a spectacle glass taking into account the optimum individual length of progression  
A method is described for determining the optical and individual progression length of a continuous vision lens on the basis of the measured cornea/bridge distance of a spectacle frame which is...
6932474 Progressive-power lens  
A progressive-power lens can be properly evaluated based on optical performance values of which definition methods are not unified, such as progressive zone length and addition diopter. In addition...
6886938 Progressive addition lenses with an additional zone  
The invention provides multifocal lenses containing at least four zones of refractive power. The zones are positioned such that the wearer is able to use the inferior-most portion of the lens to...
6883916 Progressive addition lenses  
The present provides progressive addition lens designs and lenses in which unwanted lens astigmatism is reduced as compared to conventional progressive addition lenses. The lenses of the invention...
6874887 Multifocal contact lens  
A multifocal contact lens includes a first, central zone for distance and intermediate vision and a second, outer zone for near vision. The first and second zones are conic sections joined...
6871955 Spectacle lens and manufacturing method therefor  
A spectacle lens is designed by using a value determined by either measuring or specifying for an individual spectacles wearer the value of the distance VR from a reference point on the back...
6851806 Progressive multifocal lens and method of designing the same  
To offer a novel combining formula for combining a progressive refractive surface and a toric surface, thereby to provide a novel progressive multifocal lens which has an eyesight correcting...
6848788 Progressive spectacle lens with low magnifying differences  
A spectacle lens comprises a region (distance portion) designed for viewing at large distances and in particular “to infinity”; a region (near portion) designed for viewing at short distances...
6837580 Progressive power lens  
A progressive power lens includes a convex front surface and a concave back surface which is also a progressive power surface. A pattern including distance and near reference area marks is printed...
6834957 Progressive spectacle lens having a genuine short progression area  
A progressive power spectacle lens in which a progressive length is less than or equal to 12 mm and width of the distance portion in a horizontally meridian y=+7 mm in dependence on power and...
6827441 Progressive lens with reduced distortion  
A progressive spectacle lens design has clear focal properties in the entire lens, and progressive variation in focal properties from the center of the lens down into a reading area. All current...
6808263 Progressive spectacle lens producing only slight dynamic distortion  
Described is a spectacle lens comprising a region (distance portion) designed for viewing at large distances and in particular “to infinity”; a region (near portion) designed for viewing at...
6802607 Progressive cylinder ophthalmic lenses  
The invention provides methods for designing lenses useful for correcting astigmatism in which there is a progressive cylinder power. The lens of the invention permits the cylinder power to act...
6793340 Progressive lens  
A progressive ophthalmic lens including a far vision zone, a near vision zone and an intermediate vision zone is provided having a relatively high, relatively wide near vision zone and a relatively...
6789895 Aspherical spectacle lens with prismatic power to correct phoria  
Disclosed is an aspherical spectacle lens having a prismatic power to correct hereophoria of an eye. The spectacle lens has front and back surfaces, one of which is a rotationally-asymmetrical...
6786600 Methods for generating a progressive surface and for production of multifocal progressive lenses  
A method for generating a progressive surface includes generating the surface from stored delta data and a substantially spherical surface calculated on-the-fly.
6779889 Progressive spectacle lens exhibiting only slight dynamic change of the properties of use during a horizontal viewing movements  
A spectacle lens comprises a region (distance portion) designed for viewing at greater distances, in particular, to infinity; a region (near portion) designed for viewing at short distances and, in...
6776487 Progressive spectacle lens having only a small change of binocular properties during a movement of glance  
A spectacle lens comprises a region (distance portion) designed for viewing at large distances and in particular “to infinity”; a region (near portion) designed for viewing at short distances...
6736505 Progressive power spectacle lens  
A progressive power spectacle lens has a progressive power surface on at least one of a front surface and a back surface of the spectacle lens. The progressive power surface includes a distance...
6712467 Progressive-power lens and design process for same  
The present invention provides a progressive-power lens affording superior wear comfort, even where a shallow base curve is employed in order to make the lens lighter and thinner, which is...
6709107 Composite ophthalmic lens and method for obtaining same  
The composite ophthalmic lens ( 1 ) comprises a first layer ( 2 ), at least 200 micrometers thick, forming a front part of said lens, of a first polymeric material of refractive index higher than...
6709106 Method for the manufacture of a spectacle lens, spectacle lens and spectacle lens family  
This disclosure relates to a spectacle lens family and methods of manufacturing the same, which in one embodiment has a multifocal property such that along a line between a far-vision reference...
6698884 Lenses and spectacles bearing lenses  
An optical lens element of wrap-around or shield type wherein the aperture of the lens outline or edge of at least one surface of the optical lens element is of generally ovaline shape and located...
6685316 Method of manufacturing progressive ophthalmic lenses  
What is described here is a method of manufacturing progressive ophthalmic lenses whereof each is produced in correspondence with the individual data of a specific spectacle wearer, and whereof...
6682194 Progressive multifocal ophthalmic lens with rapid power variation  
A progressive multifocal ophthalmic lens having a far vision region, an intermediate vision region and a near vision region, a main meridian of progression passing through said three regions, and a...
6669337 Progressive spectacle lens with low swaying effects  
Described is a spectacle lens comprising a region (distance portion) designed for viewing at large distances and in particular “to infinity”, a region (near portion) designed for viewing at...
6655802 Method for producing eyeglasses  
What is described here is a method of manufacturing spectacles comprising individual progressive ophthalmic lenses, including the following steps: selection of a spectacle frame, detection of the...
6652097 Progressive-power spectacle lens  
A progressive-power spectacle lens includes a distance portion having a dioptric power for distance vision, a near portion having a dioptric power for near vision, and an intermediate portion...
6607271 Method for mounting ophthalmic lenses  
The invention relates to a method for fitting, in a frame, a progressive ophthalmic lens prescribed for a wearer. It proposes that only the horizontal position of the wearer's pupil be measured on...
6595637 Progressive multifocal ophthalmic lens with fast power variation  
The invention relates to a multifocal ophthalmic lens, comprising an aspherical surface with a mean sphere and a cylinder at every point thereof, characterized by the equation: L <1/(−0.031×...
6540354 Multifocal ophthalmic lens  
A multifocal ophthalmic lens comprising a far vision region, a near vision region an intermediate vision region and a main meridian of progression passing through these three regions is provided in...
6505934 Progressive addition lenses with prism power added to improve wearer comfort  
The present invention provides progressive addition lenses into which vertical prism power is added. The resulting lens exhibits an improved image quality in comparison to conventional progressive...
6412948 Progressive power multifocal lens  
A series of progressive power multifocal lenses having a plurality of base curves which are designed to have substantially the same basic lens specifications and substantially the same optical...
6390623 Customized progressive addition lenses  
The invention provides progressive addition lenses designed for uses in which a large region of intermediate refractive power is desirable. The enlarged intermediate region is provided without...
6382789 Toric ophthalmic lenses  
A method is provided for determining, by optimization, an ophthtalmic lens for a spectacle wearer for whom an astigmatism has been prescribed, comprising the steps of: selecting a starting lens...
6366823 Design method for optical curved surface  
A design method for an optical curved surface, includes: dividing an optical curved surface into a plurality of rectangular areas that are divided by a lattice; defining an original lattice point...
6343861 Myopia lens  
A progressive ophthalmic lens element including a lens surface having an upper viewing zone having a surface to achieve a refracting power corresponding to distance vision, a lower viewing zone...
6325510 Progressive multifocal lens construction for eyeglasses  
A progressive multifocal lens for eyeglasses formed along a principle meridian curve, with a farsighted vision zone (1) having an optical power corresponding to that required for viewing distant...
6318859 Set of progressive multifocal ophthalmic lenses  
The invention concerns a set of progressive multifocal opthalmic lenses, each having a first progressive multifocal surface and a second surface preferably spherical. It proposes to define the set...
6302540 Method for the design of multifocal optical elements  
A method for designing a surface of a multifocal optical element, such as a progressive spectacle lens, includes the steps of partitioning a region into triangles, defining a set of functions, each...
6270220 Multifocal lens  
A multifocal lens having far and near vision zones is presented. The lens comprises a substrate in the form of a progressive addition lens and a modulation formed on a surface of the substrate. The...
6260967 Progressive lens  
A progressive ophthalmic lens element having a front surface that includes an upper viewing zone having a surface power suitable for distance vision, a lower viewing zone having a surface power...
6222621 Spectacle lens evaluation method and evaluation device  
The optimum optical properties of a spectacle lens that correspond with the state in which the spectacle lens is worn by respective wearers are found and evaluated. Three-dimensional shape data of...
6220705 Progressive multifocal ophthalmic lens  
In a progressive multifocal ophthalmic lens having an aspherical surface comprising a far vision region (VL), a near vision region (VP), an intermediate vision region, a main meridian of...
6220704 Progressive power lens  
An additional aspherical surface amount is defined by a sum of the optimum amount at a distance portion and the optimum amount at a near portion on a progressive refractive surface. Assuming that...
6213603 Progressive ophthalmic lens  
A progressive ophthalmic lens including at least one distant vision zone in which the power is suitable for distant viewing, at least one near vision zone in which the power is suitable for near...
6199984 Progressive addition lenses with varying power profiles  
The invention provides lenses, as well as methods for their design and production, in which the power distribution between the distance and near vision zone substantially meets the requirements of...
6199983 Apparatus and method for manufacturing a progressive multi-focal lens  
A manufacturing method of a progressive multi-focal lens which has a progressive surface area comprising a distance portion and a near portion, which have different refractive powers, and a...
Matches 51 - 100 out of 250 < 1 2 3 4 5 >