Did You Know...
...that a workman who left the soap mixing machine on too long was responsible for making Ivory Soap? He was so embarrassed by his mistake that he threw the mess in a stream. Imagine his dismay when the evidence of his error floated to the surface! Result: Ivory soap, the soap that floats.
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| Number | Title | Issue Date |
| 7274461 | Optical lens system and position measurement system using the same An optical lens system includes a lens surface capable of forming concentric interference patterns on an object as if light emitted from a single light source were virtually emitted from two or more light sources within a plane containing an optical axis of the sing... | 09/25/2007 |
| 7237893 | Light adjustable lenses capable of post-fabrication power modification via multi-photon processes The invention relates to novel photoinitiators and their use in light adjustable compositions. The initiatives comprise two or more multiphoton chromophores linked by a bridging compound. The bridging compound consists of a material that is compatible with the base ... | 07/03/2007 |
| 7217289 | Treatment of photic disturbances in the eye An ocular lens treated so that at least a portion of the lens perimeter diminishes peripheral light focus on the interior of the eye in use, so as to ameliorate phobic eye disturbances. The lens perimeter of intraocular lenses, artificial corneas and contact lenses ... | 05/15/2007 |
| 7097305 | Method of producing a corrective spectacle lens and lens blank used for same A method for manufacturing a correctable lens for glasses from an injectable thermo-plastic polymer material, or other moldable polymer, includes the step of molding a polymer blank provided with the contour of the corrective lens. The polymer blank is joined with a... | 08/29/2006 |
| 7008058 | Progressive spectacle lens having two aspherical progressive surfaces A progressive spectacle lens having two aspherical and in particular progressive surfaces, i.e. surfaces contributing to the rise in the effect (addition Add.) from the distance vision portion to the near vision portion, in which the sagittal heights z | 03/07/2006 |
| 6956087 | High refractive index polysiloxane prepolymers A process for producing polysiloxane prepolymers of improved homogeneity for use in the production of relatively high refractive index polymeric compositions is described herein. Polymeric compositions so produced are useful in the production of ophthalmic devices s... | 10/18/2005 |
| 6805712 | Process for the production of polysiloxane-based polymeric compositions for use in medical devices A process for producing polysiloxane prepolymers of improved homogeneity for use in the production of relatively high refractive index polymeric compositions is described herein. Polymeric compositions so produced are useful in the production of ophthalmic devices s... | 10/19/2004 |
| 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 or equal to 1.60 and having a front face (4) constitu... | 03/23/2004 |
| 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 at a center portion located on an axis of rotational symm... | 10/04/1994 |
| 5054904 | Aspheric lens blank The present invention provides an aspherical spectacle lens blank. The lens blank is generally circular in shape and includes a central circular zone which is surrounded by three or more concentric outer zones. For a plus power lens, the outer zones decre... | 10/08/1991 |
| 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 point on the lens is a function C(r) of the distance r from... | 09/24/1991 |
| 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 ray tracing techniques in conjunction with Modulation Transf... | 09/24/1991 |
| 4997268 | Corrective lens configuration An optical lens for eyewear for correcting severe myopia molded from a lens blank having an outer perimeter portion and an inner central portion, and having an inside and outside surface, the inside and outside surface of the outer perimeter portion being... | 03/05/1991 |
| 4895439 | Aspheric spectacle lens This patent discloses a spectacle lens having an aspheric front surface and a planar rear surface. The front surface of the spectacle lens includes a circular central zone and two or three annular zones surrounding the central zone. Each annular zone has ... | 01/23/1990 |
| 4784482 | Multifocal spectacle lens with high positive focal power A multifocal spectacle lens is described with a high positive focal power, with a convex front surface which comprises an aspheric focal portion with an additional near segment, a transition zone surrounding the focal portion and a rim zone, and with an i... | 11/15/1988 |
| 4719248 | Ultraviolet blocking agents for contact lenses Novel ultraviolet absorbing compounds useful in contact lenses and methods for curing contact lenses containing UV absorbers are disclosed.... | 01/12/1988 |
| 4577942 | Laminated high correction eyeglass lens Disclosed is a high index of refraction glass base lens in combination with readily castable CR-39 or equivalent plastic veneer overlay. The high index of refraction glass serves to bend light quickly and radically to eliminate the need for excessive lens... | 03/25/1986 |
| 4573777 | Aspheric spectacle lens blank The present invention provides a spectacle lens blank for an aphakic eye and which is adapted to be worn in front of the eye by patients following extra capsular surgery. The lens blank includes a lens body having a posterior surface and an aspherical ant... | 03/04/1986 |
| 4573776 | Biconvex aphakic prosthetic lens This invention relates to a reduced magnification, thinner lens structure, and improved vision for an aphakic patient by biconvexing the lens with the occular side of the lens having a correction of +0.25 to +6.00 diopters, and offsetting the tunnel visio... | 03/04/1986 |
| 4538887 | Aspheric spectacle lens blank The present invention provides a spectacle lens blank for an aphakic eye and which is adapted to be positioned at a predetermined position in front of the eye. The lens blank includes a lens body having a posterior surface and an anterior surface. The ant... | 09/03/1985 |
| 4504128 | Spectacle lens with high positive refractive power A spectacle lens with a high positive refracting power, whose front surface has an aspheric, rotationally symmetric effective part. The effective part is configured in accordance with the following equation: ##EQU1## where z is the sagitta, h is the ... | 03/12/1985 |
| 4289387 | Ophthalmic spectacle lenses having a hyperbolic surface Ophthalmic spectacle lenses are provided with powers ranging from -20 to +7 diopters, for minus powered lenses, with a posterior surface of a hyperboloidal form and, for positive powered lenses with an anterior surface of a hyperboloidal form. Such hyperb... | 09/15/1981 |
| 4195919 | Contact lens with reduced spherical aberration for aphakic eyes Contact lenses, particularly for aphakic eyes, are characterized by a rear conicoid optical surface that is fitted to the cornea and a front prolate ellipsoidal optical surface of particular power, these surfaces having functionally related configurations... | 04/01/1980 |
| 4185897 | Prosthetic aspheric spectacle lens for aphakia A prosthetic, aspheric spectacle lens for aphakic patients comprising a posterior surface and an anterior surface having a spherically curved zone and an aspheric peripheral zone surrounding the central zone. The aspheric peripheral zone has an optimized ... | 01/29/1980 |
| 4181409 | Aspheric lens series A series of non-lenticular ophthalmic lenses for use in the correction of aphakia having, in the case of each lens of the series, a front surface of rotationally symmetrical aspheric cross-sectional curvature designed for wide field of view with considera... | 01/01/1980 |
| 4129361 | Eye testing device for prescribing eyeglasses A device for determining a prescription lens for eyeglasses to be used by highly hyperopic patients, in which a frame mounted lens is inserted in a trial lens mounting to project on either side of the frame with one surface of the lens formed with an asph... | 12/12/1978 |
| 4079470 | Artificial intraocular lens A chemically durable, biologically inert optical implant lens formed of a low density natural or synthetic crystal, such as Corundum, Sapphrie, Ruby, Sircon, Strontium Titanate, Diamond, Anatase or Ruby.... | 03/21/1978 |
| 4073578 | Spectacle lens for aphakia patients A spectacle lens having an anterior surface curvature, the anterior surface having a spherically shaped central vision surface area from 12 to 16 diopters and a peripheral, aspherical surface area surrounding the center vision spherical area, the aspheric... | 02/14/1978 |
| 3996627 | Artificial intraocular lens A chemically durable, inert optical implant lens and glass composition for the manufacture of same.... | 12/14/1976 |
| 3950082 | Ophthalmic lens for presbyopia and aphakia There is presented a multifocal ophthalmic lens of homogeneous transparent optical material useful for the correction of the refractive error and the accommodative insufficiency or absence of accommodation in presbyopia and in aphakia, the lens characteri... | 04/13/1976 |
