Настройки

Укажите год
-

Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

Подробнее
-

Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год
Применить Всего найдено 7922. Отображено 100.
10-05-2012 дата публикации

Methods materials and systems for producing a contact lens and contact lenses produced using said methods materials and systems

Номер: US20120113384A1
Автор: Jonathan Baruch Pasternak, Vladimir Sherman
Принадлежит: LEUKO OPHTHALMIC Tech Ltd

Disclosed are methods, materials and systems for producing contact lenses and contact lenses produced using said methods, materials and systems. According to some embodiments, a contact lens produced by said methods, materials and systems includes an extra-ocular indicator (“EOI”) adapted to alter in color upon removal of said lens from an eye. The EOI may be at least partially composed of a pigment adapted to become relatively more visible when the contact lens is outside an eye than when the contact lens is placed in an eye.

Подробнее
Номер записи: 1
12-07-2012 дата публикации

Method for Producing Photochromatic Optical Elements, and Photochromatic Optical Elements

Номер: US20120176657A1
Автор: Giancarlo Marinelli
Принадлежит: Individual

The present invention refers to a process for the preparation of photochromatic optical elements, and corresponding photochromatic optical elements. Starting from a given optical body, the process according to the invention comprises the following steps: depositing a first layer comprising a transparent resin at least onto a part of said optical body; depositing onto the first layer previously deposited a second layer comprising photochromatic pigments.

Подробнее
Номер записи: 2
23-08-2012 дата публикации

Colored ink for pad transfer printing of silicone hydrogel lenses

Номер: US20120213922A1
Автор: Barry L. Atkins, Gregory Carlson, Michael Hugh Quinn
Принадлежит: Individual

The present invention provides a method for making colored silicone hydrogel contact lenses. The method of the invention comprises the steps of: (a) providing a contact lens constructed of a silicone hydrogel; (b) applying a color coat to at least a portion of a surface of the lens with an ink, wherein the ink comprises at least one colorant, a silicone-containing binder polymer, one or more vinylic monomers, and optionally a diluent, wherein the silicone-containing binder polymer is a copolymerization product of a polymerizable mixture including (i) at least one hydrophilic vinylic monomer; (ii) at least one functionalizing vinylic monomer; (iii) at least one silicone-containing vinylic monomer or macromer; (c) curing the ink in the presence of an adhesion promoter, thereby causing the color coat to adhere to the lens.

Подробнее
Номер записи: 3
20-09-2012 дата публикации

Stacked integrated component media insert for an ophthalmic device

Номер: US20120234453A1
Автор: Adam Toner, Daniel B. Otts, Frederick A. Flitsch, James Daniel Riall, Randall B. Pugh
Принадлежит: Johnson and Johnson Vision Care Inc

This invention discloses methods and apparatus for providing a media insert with an energy source to an ophthalmic lens. The energy source is capable of powering a component included within the ophthalmic lens. In some embodiments, an ophthalmic lens is cast molded from a silicone hydrogel and the component includes an electro-optical lens portion.

Подробнее
Номер записи: 4
20-09-2012 дата публикации

Apparatus for manufacturing stacked integrated component media inserts for ophthalmic devices

Номер: US20120234493A1
Автор: Adam Toner, Daniel B. Otts, Frederick A. Flitsch, James Daniel Riall, Randall B. Pugh
Принадлежит: Johnson and Johnson Vision Care Inc

This invention discloses methods and apparatus for providing a media insert with an energy source to an ophthalmic lens. The energy source is capable of powering a component included within the ophthalmic lens. In some embodiments, an ophthalmic lens is cast molded from a silicone hydrogel and the component includes an electro-optical lens portion.

Подробнее
Номер записи: 5
13-12-2012 дата публикации

Method of preparing an ophthalmic lens fitted with a memory mark

Номер: US20120314186A1
Автор: Dominique Leguy, Eva Lazuka-Nicoulaud, Loic Levraud
Принадлежит: Essilor International Compagnie Generale dOptique SA

A method of preparing an ophthalmic lens ( 20 ) for mounting in an eyeglass frame, the ophthalmic lens including a memory mark ( 28 ) that is situated on one of its ophthalmic faces ( 22 ) and that forms a code storing in digital form at least one item of information relating to a mechanical, geometrical, or optical characteristic of the ophthalmic lens. The method includes three steps: a) acquiring a raw image of at least a portion of the optical face of the ophthalmic lens on which an image of the memory mark appears; b) processing the raw image acquired in step a) in order to decode the information stored in the code; and c) centering and then shaping the ophthalmic lens as a function of the information decoded in step b).

Подробнее
Номер записи: 6
21-03-2013 дата публикации

METHOD FOR MANUFACTURING OPTICAL ELEMENT, AND OPTICAL ELEMENT MOLDING DIE

Номер: US20130069257A1
Автор: Kamada Yoshihiro, Ogura Kazuyuki
Принадлежит:

Provided is an optical element manufacturing method for manufacturing optical elements having opposing optical surfaces by using a pair of molding dies having molding surfaces, in which each molding die is provided with a molding surface for molding a first optical element and a molding surface for molding a second optical element, wherein the later molding surface is distinct from the former one and is used to adjust the relative positions of the pair of molding dies, and in which each molding die is used to perform the steps of: molding the second optical element; determining the misalignment between the opposing optical surfaces from the transmitted wavefront aberration of the second optical element; adjusting the relative position between the molding dies on the basis of the determined relative displacement; and molding the first optical element by using the molding dies, the relative position of which has been adjusted. 16-. (canceled)7. A method of manufacturing a first optical element having opposing optical surfaces , comprising steps of:molding a second optical element by using a pair of molding dies having a pair of first opposing surfaces to mold optical surfaces of the first optical element and a pair of second opposing surfaces to mold the second optical element, the second optical element having a configuration different from a configuration of the first optical element;measuring an amount of misalignment of a relative position of the opposing optical surfaces of the second optical element based on transmitted wavefront aberration caused by the second optical element molded by the pair of second opposing surfaces; andadjusting the relative position of the pair of molding dies based on the amount of the misalignment of the relative position measured in the measuring step;molding the first optical element by using the pair of molding dies, the relative position of which has been adjusted in the step of adjusting the relative position, andwherein the pair ...

Подробнее
Номер записи: 7
04-04-2013 дата публикации

Method of creating a visible mark on lens using a leuco dye

Номер: US20130083287A1
Автор: Stacey V. MAGGIO, Stephen C. Pegram, Yongcheng Li
Принадлежит: Johnson and Johnson Vision Care Inc

The present invention relates to a method for manufacturing a contact lens having a visible mark including the steps of (i) curing a hydrogel having reactive components including a leuco dye and a silicone component to form the contact lens and (ii) activating the leuco dye in at least a portion of said contact lens to change the color of the leuco dye to create the visible mark; wherein the leuco dye contains at least one methacrylate, acrylate, or styrene functional group, and the leuco dye polymerizes with the silicone component during the curing step.

Подробнее
Номер записи: 8
02-05-2013 дата публикации

PRODUCTION OF OPHTHALMIC DEVICES BASED ON PHOTO-INDUCED STEP GROWTH POLYMERIZATION

Номер: US20130106007A1
Автор: Medina Arturo Norberto, Scott Robert, Smith Dawn Alison
Принадлежит: NOVARTIS AG

The invention provide a new lens curing method for making hydrogel contact lenses. The new lens curing method is based on actinically-induced step-growth polymerization. The invention also provides hydrogel contact lenses prepared from the method of the invention and fluid compositions for making hydrogel contact lenses based on the new lens curing method. In addition, the invention provide prepolymers capable of undergoing actinically-induced step-growth polymerization to form hydrogel contact lenses. 212-. (canceled)15. The method of claim 1 , wherein the mold is a reusable mold.16. The method of claim 15 , wherein the step (3) is performed by means of a spatial limitation of actinic radiation to crosslink the prepolymer.1719-. (canceled)2124-. (canceled)25. The prepolymer of claim 20 , wherein the copolymer with pendant or terminal functional groups is obtained by copolymerization of a composition comprising(1) at least one hydrophilic vinylic monomer,(2) at least one silicone-containing monomer having one ethylenically unsaturated double bond, at least one siloxane-containing macromer having one ethylenically unsaturated double bond, at least one siloxane-containing macromer having two or more ethylenically unsaturated double bonds, a polysiloxane having two or more ethylenically unsaturated double bonds, a perfluoroalkyl polyether having two or more ethylenically unsaturated double bonds, a polysiloxane/perfluoroalkyl polyether block copolymer having two or more ethylenically unsaturated double bonds, or a combination of two or more thereof,(3) optionally at least one hydrophobic vinylic monomer; and(4) optionally one or more hydrophilic prepolymers having multiple acryloyl or methacryloyl groups,provided that at least one of components (1)-(4) further comprises at least one functional group through which a cinnamic acid moiety or an dialkylalmeimide group can be covalently linked to the obtained copolymer.26. The prepolymer of claim 20 , wherein the copolymer ...

Подробнее
Номер записи: 9
23-05-2013 дата публикации

SILICONE HYDROGEL LENSES WITH CONVERTIBLE COMFORT AGENTS

Номер: US20130127077A1
Автор: Qiu Yongxing
Принадлежит: NOVARTIS AG

The invention provides a silicone hydrogel contact lens including a hydrolyzable polymer. The hydrolyzable polymer can be converted by hydrolysis into a hydrophilic polymer which is capable of imparting the silicone hydrogel contact lens a hydrophilic surface without post-curing surface treatment. 110-. (canceled)11. A method for making silicone hydrogel contact lenses , comprising the steps of:(a) obtaining a mold having a first mold half and a second mold half, wherein the first mold half includes a first molding surface and the second mold half includes a second molding surface, wherein the first and second mold halves are configured to receive each other such that a lens-forming cavity is formed between the first molding surface and the second molding surface;(b) dispensing a silicone hydrogel lens-forming material into the lens-forming cavity of the mold, wherein the silicone-hydrogel lens-forming material comprises a non-crosslinkable hydrolyzable polymer and at least one member selected from the group consisting of a silicone-containing monomer, a silicone-containing macromer, a silicone-containing prepolymer, and a mixture thereof;(c) curing the lens-forming material within the lens-forming cavity to form a silicone hydrogel contact lens containing the non-crosslinkable hydrolyzable polymer; and(d) converting the non-crosslinkable hydrolyzable polymer in the silicone hydrogel contact lens into hydrophilic polymer, whereby the hydrophilic polymer in the silicone hydrogel contact lens is capable of imparting the silicone hydrogel contact lens a hydrophilic surface without post-curing surface treatment.12. The method of claim 11 , wherein the mold is reusable and the curing step is performed by means of a spatial limitation of actinic radiation.13. The method of claim 11 , wherein the first or second hydrolyzable polymer is hydrolyzed into the hydrophilic polymer in a primary package containing the silicone hydrogel contact lens during autoclave.14. The method ...

Подробнее
Номер записи: 10
13-06-2013 дата публикации

Method of Treating a Lens Forming Surface of at Least One Mold Half of a Mold for Molding Ophthalmic Lenses

Номер: US20130147072A1
Автор: Bothe Harald, Matsuzawa Yasuo
Принадлежит: NOVARTIS AG

A method of treating of a lens forming surface () of at least one mold half () of a mold for molding an ophthalmic lens, in particular of the lens forming surface of a glass mold half for molding a contact lens, especially a soft contact lens, includes the steps of: 121. Method of treating of a lens forming surface () of at least one mold half () of a mold for molding an ophthalmic lens , in particular of the lens forming surface of a glass mold half for molding a contact lens , especially a soft contact lens , the method including the steps of:{'b': '10', 'providing a plasma () under atmospheric pressure, and'}{'b': 2', '10', '2', '2, 'exposing the lens forming surface () to the plasma () under atmospheric pressure thereby hydrophilizing the lens forming surface () without depositing any material on the lens forming surface ().'}2. Method according to claim 1 , wherein the mold comprises a male mold half and a female mold half claim 1 , and wherein the lens forming surfaces of both the male mold half and the female mold half are exposed to the plasma.3. Method according to claim 2 , wherein the lens forming surfaces of the male mold half and of the female mold half are exposed to the plasma for different periods of time.4. Method according to claim 1 , wherein the mold comprises a male mold half and a female mold half claim 1 , and wherein the lens forming surface of only one of the male and female mold halves is exposed to the plasma.5. Method according to claim 4 , wherein the lens forming surface of only the female mold half is exposed to the plasma.6. Method according to any one of the preceding claims claim 4 , wherein the plasma is a plasma of a gas selected from the group consisting of argon claim 4 , helium claim 4 , nitrogen claim 4 , oxygen claim 4 , tetrafluoroethane claim 4 , air claim 4 , or a mixture of argon and oxygen claim 4 , argon and nitrogen claim 4 , argon and air claim 4 , argon and tetrafluoroethane claim 4 , helium and oxygen claim 4 , ...

Подробнее
Номер записи: 11
20-06-2013 дата публикации

OPTICAL ELEMENT AND METHOD FOR THE PRODUCTION THEREOF

Номер: US20130154137A1
Автор: Wanninger Mario
Принадлежит: OSRAM Opto Semiconductors GmbH

Described is an optical element for guiding electromagnetic radiation. The optical element includes a base body and at least one film, wherein the film is configured to adhere to the base body to form an intimate connection with the base body without using an adhesion promoting interlayer and is arranged such that the electromagnetic radiation passes through it. 1. A method for producing an optical element comprising a base body , a film , and a reflector film , in which said film is configured to adhere to said base body and to form a connection with said base body without using an adhesion-promoting interlayer , said film being disposed between said base body and said reflector film , said film and reflector film defining an air gap between said reflector film and said film , said method comprisingplacing the film in an injection mold, andfilling the injection mold with a filler material operative to form the base body, such that said connection is formed between said filler material and said film.2. The method as in claim 1 , wherein said reflector film is arranged on said film with said air gap existing between said reflector film and said film.3. The method as in claim 1 , wherein said filler material is a transparent material.4. The method as in claim 3 , wherein said filler material contains at least one of the following materials: an epoxy resin claim 3 , acrylic resin or silicone resin.5. The method as in claim 1 , wherein the filler material contains particles for scattering electromagnetic radiation.6. The method as in claim 1 , wherein said base body is produced by injection molding.7. The method as in claim 1 , wherein said film is transparent or translucent.8. The method as in claim 1 , wherein said film contains particles for scattering electromagnetic radiation.9. The method as in claim 1 , wherein said film contains a phosphor.10. The method as in claim 1 , wherein said film has a non-smooth structure.11. The method as in claim 1 , wherein said film ...

Подробнее
Номер записи: 12
20-06-2013 дата публикации

Ophthalmic Lens Molds, Ophthalmic Lenses Molded Therein, And Related Methods

Номер: US20130155372A1
Автор: Almond Sarah L., Bialek Edyta S., Bruce Ian, Morsley David Robert, Norris Lee Darren, Rogers Richard C., Sheader Benjamin S., Siddiqui A.K.M. Shahab
Принадлежит: COOPERVISION INTERNATIONAL HOLDING COMPANY, LP

Methods of manufacturing contact lenses using ophthalmic lens molds having a molding surface comprising a thermoplastic polymer, the molding surface having a percent polarity from 3% to 20% and a surface energy from about 25 mN/m to about 40 mN/m to cast mold a polymerizable composition having a surface tension from about 20 mN/m to about 25 mN/m, wherein a surface energy differential of the surface tension of the polymerizable composition less the surface energy of the molding surface less than or equal to zero (0); and silicone hydrogel contact lens bodies so manufactured are described. 1. A method of manufacturing a silicone hydrogel contact lens body , comprising:providing a first mold member and a second mold member, the first mold member comprising a concave molding surface configured to mold an anterior surface of a contact lens and the second mold member comprising a convex molding surface configured to mold a posterior surface of a contact lens, the first mold member and the second mold member being configured to form a lens-shaped cavity therebetween when combined as a mold assembly, the molding surface of at least one of the first mold member and the second mold member comprising a thermoplastic polymer, the molding surface having a percent polarity from 3% to 20% and a surface energy from about 25 mN/m to about 40 mN/m;placing a polymerizable composition comprising a) at least one silicon-containing monomer and b) at least one hydrophilic monomer in the first mold member, the polymerizable composition having a surface tension from about 20 mN/m to about 25 mN/m, and a surface energy differential of the surface tension of the polymerizable composition less the surface energy of the molding surface is less than or equal to zero (0);assembling the mold assembly by placing the second mold member in contact with the first mold member so as to form a lens-shaped cavity therebetween with the polymerizable composition contained in the lens-shaped cavity of the ...

Подробнее
Номер записи: 13
27-06-2013 дата публикации

METHOD FOR PRODUCING PLASTIC LENS

Номер: US20130161844A1
Автор: SATO Kiyonori, TAKATORI Norio
Принадлежит:

There is provided a method for producing a plastic lens in which, without heating a die, a resin injected and filled into a cavity can be maintained at a temperature higher than a glass transition temperature of the resin only for a time until the filling of the resin into the cavity terminates, whereby the generation of a surface defect such as jetting or a flow mark, or a weld line can be prevented. In producing the plastic lens having a predetermined lens shape by injecting and filling a molten raw material resin into a cavity formed between a movable die and a fixed die a part or all of a molding surface of at least one of inserts and as cavity forming members is formed by using insulating materials and made of a glass raw material. 1. A method for producing a plastic lens in which a molten raw material resin is injected and filled into a cavity formed between a pair of divided dies , to produce the plastic lens having a predetermined lens shape , the method comprising:forming a part or all of a molding surface of at least one of the pair of divided dies which forms the cavity, by use of an insulating material made of a glass raw material; andinjecting and filling the raw material resin into the cavity, to mold the raw material resin into the predetermined lens shape.2. The method for producing the plastic lens according to claim 1 , wherein a minus lens in which the thickness of a lens center is small and the thickness of a lens peripheral edge portion is large is an object to be molded.3. The method for producing the plastic lens according to claim 1 , wherein the molding surface is formed by using claim 1 , as the insulating material claim 1 , an amorphous glass raw material having a thermal conductivity of 0.4 to 1.3 W/m·K.4. The method for producing the plastic lens according to claim 1 , wherein a surface temperature of the raw material resin is maintained at a temperature higher than a glass transition temperature of the resin claim 1 , until the filling ...

Подробнее
Номер записи: 14
27-06-2013 дата публикации

Ophthalmic Device Molds And Related Methods

Номер: US20130161846A1
Автор: Bialek Edyta S., Bruce Ian, Goodenough Neil, Morsley David Robert, Norris Lee Darren
Принадлежит: COOPERVISION INTERNATIONAL HOLDING COMPANY, LP

Ophthalmic device molds made from a first portion of a molding surface formed from a first polymer and a second portion of the molding surface formed from a second polymer are described. When combined, the first portion and the second portion of the molding surface form an entire molding surface suitable for molding an entire surface, such as an anterior surface or a posterior surface of an ophthalmic device. Methods of manufacturing ophthalmic devices using these molds, including contact lenses, are also described. 2. The method of claim 1 , wherein the first polymer comprises at least one vinyl alcohol copolymer which is not an ethylene-vinyl alcohol copolymer.3. The method of claim 1 , wherein the first polymer comprises NICHIGO G-POLYMER™.4. The method of claim 1 , wherein the second polymer comprises polypropylene.5. The method of claim 1 , wherein the step of using the first polymer to form the first portion of the molding surface comprises injection molding the first polymer.6. The method of claim 5 , wherein the step of injection molding the first polymer uses a process setting selected from the group consisting of: melt temperature from about 180° C. to about 250° C. claim 5 , barrel temperature from about 180° C. to about 250° C. claim 5 , throat temperature from about 30° C. to about 70° C. claim 5 , mold tool temperature from about 30° C. to about 95° C. claim 5 , holding time from about 1 second to about 5 seconds claim 5 , injection speed from about 50 mm/second to about 250 mm/second claim 5 , plasticizing speed from about 100 mm/second to about 300 mm/second claim 5 , injection pressure from about 50 Bar to about 180 Bar claim 5 , holding pressure from about 10 Bar to about 200 Bar claim 5 , back pressure from about 5 Bar to about 25 Bar claim 5 , and any combination thereof.7. The method claim 1 , wherein the step of using the first polymer to form the first portion of the molding surface comprises lathing the first polymer.8. The method of claim 1 ...

Подробнее
Номер записи: 15
27-06-2013 дата публикации

Polar Thermoplastic Ophthalmic Lens Molds, Ophthalmic Lenses Molded Therein, And Related Methods

Номер: US20130162942A1
Автор: Almond Sarah L., Bialek Edyta S., Bruce Ian, Morsley David Robert, Norris Lee Darren, Rogers Richard C., Sheader Benjamin S., Siddiqui A.K.M. Shahab
Принадлежит: COOPERVISION INTERNATIONAL HOLDING COMPANY, LP

Ophthalmic lens molds made from one or more thermoplastic polymers with average polarities from about 1% to about 7%, ophthalmic lenses including silicone hydrogel contact lenses molded using these less polar thermoplastic polymers, and related methods are described. When the molds are used to cast mold silicone hydrogel contact lenses, the resulting polymerized lens bodies have ophthalmically acceptably wettable surfaces. 1. A method of manufacturing a silicone hydrogel contact lens body , comprising:providing a first mold member and a second mold member, the first mold member comprising a concave molding surface configured to mold an anterior surface of a contact lens and the second mold member comprising a convex molding surface configured to mold a posterior surface of a contact lens, the molding surface of at least one of the first mold member and the second mold member comprising at least one polar thermoplastic polymer with an average polarity of from 1% to 7%, the first mold member and the second mold member being configured to form a lens-shaped cavity therebetween when combined as a mold assembly;placing a polymerizable composition comprising a) at least one silicone monomer, silicone macromer, silicone prepolymer, or combination thereof, and b) at least one hydrophilic monomer in the first mold member;assembling the mold assembly by placing the second mold member in contact with the first mold member so as to form a lens-shaped cavity therebetween with the polymerizable composition contained in the lens-shaped cavity of the mold assembly;curing the polymerizable composition in the mold assembly to form a cast-molded polymerized reaction product in the lens-shaped cavity of the mold assembly, the polymerized reaction product comprising a silicone hydrogel contact lens body;wherein the lens body has ophthalmically acceptably wettable anterior and posterior surfaces without application of a surface treatment to the lens body, or without the presence of an ...

Подробнее
Номер записи: 16
27-06-2013 дата публикации

Ophthalmic Device Molds Formed From Vinyl Alcohol Copolymer, Ophthalmic Devices Molded Therein, And Related Methods

Номер: US20130162943A1
Автор: Bialek Edyta S., Bruce Ian, Goodenough Neil, Morsley David Robert, Norris Lee Darren
Принадлежит:

Ophthalmic device molds made from at least one vinyl alcohol copolymer and having a static sessile drop contact angle of less than 70 degrees, ophthalmic devices such as ocular inserts and contact lenses and including silicone hydrogel devices formed using these molds, and related methods are described. The methods of manufacturing ophthalmic devices can use dry or wet demolding processes, or dry or wet delensing processes. 1. A method of manufacturing an ophthalmic device , comprising:(a) providing at least one vinyl alcohol copolymer,(b) using the at least one vinyl alcohol copolymer to form at least one of a first mold member and a second mold member, the at least one of the first mold member and the second mold member comprising a device-forming molding surface having a static sessile drop contact angle less than 60 degrees and which is free of a plasma treatment, wherein the first mold member comprises a molding surface configured to mold an anterior surface of an ophthalmic device and the second mold member comprises a molding surface configured to mold a posterior surface of an ophthalmic device, and the first mold member and the second mold member are configured to form an ophthalmic device-shaped cavity therebetween when combined as a mold assembly;(c) placing a polymerizable composition comprising at least one hydrophilic monomer in the first mold member or the second mold member;(d) assembling the mold assembly by contacting the first mold member and the second mold member so as to form the ophthalmic device-shaped cavity therebetween with the polymerizable composition contained in the ophthalmic device-shaped cavity of the mold assembly; and(e) curing the polymerizable composition in the mold assembly to form a cast-molded polymerized reaction product in the ophthalmic device-shaped cavity of the mold assembly, the polymerized reaction product comprising a polymeric ophthalmic device body.2. The method of claim 1 , wherein the ophthalmic device comprises ...

Подробнее
Номер записи: 17
27-06-2013 дата публикации

Variable focus ophthalmic device including liquid cyrstal elements

Номер: US20130166025A1
Автор: Daniel P. Ottis, Frederick A. Flitsch, Randall B. Pugh
Принадлежит: Johnson and Johnson Vision Care Inc

This invention discloses methods and apparatus for providing a Variable Optic Insert into an Ophthalmic Lens. An energy source is capable of powering the Variable Optic Insert included within the Ophthalmic Lens. In some embodiments, an Ophthalmic Lens is cast-molded from a silicone hydrogel. The various Ophthalmic Lens entities may include electroactive Liquid Crystal layers to electrically control refractive characteristics.

Подробнее
Номер записи: 18
04-07-2013 дата публикации

Contact lenses with identifying mark

Номер: US20130168884A1
Автор: Courtney Flem Morgan, Lance Kyle Lipscomb, Robert Carey Tucker, Sandra Corti
Принадлежит: NOVARTIS AG

The present invention is related to a method for making contact lenses with identifying mark, in particular to silicone hydrogel contact lenses. The present invention is also related to a method of high intensity UV curing the identifying mark print on the mold and high intensity UV treating mold for making silicone hydrogel contact lenses with identifying mark.

Подробнее
Номер записи: 19
04-07-2013 дата публикации

Ophthalmic Device Molds Formed From Highly Amorphous Vinyl Alcohol Polymer, Ophthalmic Devices Molded Therein, And Related Methods

Номер: US20130169926A1
Автор: Bialek Edyta S., Bruce Ian, Goodenough Neil, Morsley David Robert, Norris Lee Darren
Принадлежит: COOPERVISION INTERNATIONAL HOLDING COMPANY, LP

Ophthalmic device molds made from at least one highly amorphous vinyl alcohol polymer, ophthalmic devices such as ocular inserts and contact lenses and including silicone hydrogel devices formed using these molds, and related methods are described. The methods of manufacturing ophthalmic devices can use dry or wet demolding processes, or dry or wet delensing processes. 1. A method of manufacturing an ophthalmic device , comprising:(a) providing at least one highly amorphous vinyl alcohol polymer having an average level of crystallinity of less than 35%;(b) using the at least one vinyl alcohol polymer to form at least one of a first mold member and a second mold member, the first mold member comprising a molding surface configured to mold an anterior surface of an ophthalmic device and the second mold member comprising a molding surface configured to mold a posterior surface of an ophthalmic device, the first mold member and the second mold member configured to form an ophthalmic device-shaped cavity therebetween when combined as a mold assembly;(c) placing a polymerizable composition comprising at least one hydrophilic monomer in the first mold member or the second mold member;(d) assembling the mold assembly by contacting the first mold member and the second mold member so as to form the ophthalmic device-shaped cavity therebetween with the polymerizable composition contained in the ophthalmic device-shaped cavity of the mold assembly; and(e) curing the polymerizable composition in the mold assembly to form a cast-molded polymerized reaction product in the ophthalmic device-shaped cavity of the mold assembly, the polymerized reaction product comprising a polymeric ophthalmic device body.2. The method of claim 1 , wherein the at least vinyl alcohol polymer is a vinyl alcohol copolymer.3. The method of claim 2 , wherein the at least one vinyl alcohol polymer comprises an acetoacetic ester group-containing vinyl alcohol copolymer.7. The method of claim 1 , wherein the ...

Подробнее
Номер записи: 20
04-07-2013 дата публикации

Vinyl Alcohol Ophthalmic Lens Molds, Ophthalmic Lenses Molded Therein, And Related Methods

Номер: US20130169927A1
Автор: Bialek Edyta S., Bruce Ian, Goodenough Neil, Morsley David Robert, Norris Lee Darren
Принадлежит: COOPERVISION INTERNATIONAL HOLDING COMPANY, LP

Ophthalmic lens molds made from at least one vinyl alcohol copolymers with high amorphous content, ophthalmic lenses including silicone hydrogel contact lenses formed using these molds, packaged ophthalmic lenses present in a solution comprising the at least one vinyl alcohol copolymer with high amorphous content, and related methods are described. The methods of manufacturing ophthalmic lenses can use wet demolding, delensing or demolding and delensing processes involving dissolving the molds in water or an aqueous solution. 1. A method of manufacturing an ophthalmic lens , comprising:(a) providing at least one vinyl alcohol copolymer with high amorphous content wherein the at least one vinyl alcohol copolymer with high amorphous content is a vinyl alcohol copolymer with an average level of crystallinity from about 10% to about 30%;(b) using the at least one vinyl alcohol copolymer with high amorphous content to form at least one of a first mold member and a second mold member, the first mold member comprising a concave molding surface configured to mold an anterior surface of a lens and the second mold member comprising a convex molding surface configured to mold a posterior surface of a lens, the first mold member and the second mold member configured to form a lens-shaped cavity therebetween when combined as a mold assembly;(c) placing a polymerizable composition comprising at least one hydrophilic monomer in the first mold member or the second mold member;(d) assembling the mold assembly by contacting the first mold member and the second mold member so as to form the lens-shaped cavity therebetween with the polymerizable composition contained in the lens-shaped cavity of the mold assembly; and(e) curing the polymerizable composition in the mold assembly to form a cast-molded polymerized reaction product in the lens-shaped cavity of the mold assembly, the polymerized reaction product comprising an ophthalmic lens body.2. The method of claim 1 , wherein the at ...

Подробнее
Номер записи: 21
11-07-2013 дата публикации

COLORED CONTACT LENSES AND METHOD OF MAKING THE SAME

Номер: US20130175721A1
Автор: Corti Sandra, Morgan Courtney Flem
Принадлежит: NOVARTIS AG

The present invention generally relates to a method for making colored contact lenses, in particular to colored silicone hydrogel contact lenses. The present invention is also related to a method of a first high intensity UV curing the colored print on the mold and a second high intensity UV treating mold for making colored silicone hydrogel contact lenses. The present invention illustrates the right combination of the first high intensity UV exposure and the second high intensity UV exposure allows a lens that maintains good ion permeability (IP) value and a good print quality. 1. A method of making colored silicone-hydrogel contact lenses , comprising the steps of:(a) providing a mold assembly comprising a female mold half having a molding surface and a male mold half having a molding surface;(b) applying at least one color coat to at least a portion of at least one of the female molding surface and the male molding surface with an ink, wherein the ink comprises at least one colorant and a silicone-containing polymer binder;(c) irradiating the color coat on the molding surface with a first high intensity UV light to at least partially cure the color coat; and then(d) irradiating the exposed surfaces of the female mold and the male mold with a second high intensity UV light prior to;(e) filling a lens-forming fluid material comprising at least one silicone-containing vinylic monomer or macromer and at least one hydrophilic vinylic monomer into the irradiated mold assembly from step d);(f) exposing the mold assembly and the lens-forming fluid material to an energy source, wherein the energy source polymerizes the lens-forming fluid material;{'sup': 2', '2, 'wherein emission spectrum of the first high intensity UV light has a higher intensity in wavelength range 320-390 nm by at least 200 mW/cmand a lower intensity in wavelength range 250-260 nm by at least 10 mW/cmthan the second high intensity UV light.'}2. The method of claim 1 , wherein the intensity of the first ...

Подробнее
Номер записи: 22
11-07-2013 дата публикации

PROCESS FOR MAKING OPHTHALMIC LENSES

Номер: US20130175722A1
Автор: Alli Azaam, Canavan Kristy L., Ford James D., Mahadevan Shivkumar, Turner David C., ZANINI DIANA
Принадлежит: JOHNSON & JOHNSON VISION CARE, INC.

The present invention relates to aqueous processes for the production of silicone hydrogel contact lenses. 1. A contact lens made by a process comprising(a) curing in a mold a reaction mixture comprising at least one silicone containing component wherein said reaction mixture is substantially free from sparingly water soluble components or impurities having a retention time, relative to TRIS of less than about 0.9 to form a lens;(b) contacting said lens and mold with an aqueous solution at a temperature less than 99° C. for less than about 1 hour; to release said lens from the mold and(c) optionally post processing the lens, wherein said post processing, if conducted, is conducted with aqueous solutions for a time less than 6 hours.2. The contact lens of wherein said reaction mixture further comprises at least one hydrophilic component.3. The contact lens of wherein said hydrophilic component comprises at least one acrylic- or vinyl-containing monomer.4. The contact lens of wherein said hydrophilic component comprises at least one monomer selected from the group consisting of DMA claim 2 , 2-hydroxyethyl methacrylate claim 2 , glycerol methacrylate claim 2 , 2-hydroxyethyl methacrylamide claim 2 , N-vinyl pyrrolidone claim 2 , N-vinyl-N-methyl acrylamide claim 2 , polyethyleneglycol monomethacrylate claim 2 , methacrylic acid claim 2 , acrylic acid and combinations thereof5. The contact lens of wherein said aqueous processing time is less than about 4 hours.6. The contact lens of wherein said aqueous processing time is less than about 2 hours.7. The contact lens of wherein said aqueous processing time is less than about one hour.8. The contact lens of wherein said component or impurity is present in an amount of less than about 3000 ppm in the reaction mixture.9. The contact lens of wherein said component or impurity is present in an amount of less than about 1000 ppm in the reaction mixture.10. The contact lens of wherein said component or impurity is present in an ...

Подробнее
Номер записи: 23
11-07-2013 дата публикации

Silicone Hydrogel Ophthalmic Devices Molded In Vinyl Alcohol Copolymer Molds And Related Methods

Номер: US20130176530A1
Автор: Bialek Edyta S., Bruce Ian, Goodenough Neil, Morsley David Robert, Norris Lee Darren
Принадлежит: COOPERVISION INTERNATIONAL HOLDING COMPANY, LP

Silicone hydrogel ophthalmic devices, such as ocular inserts and contact lenses, formed in direct contact with molds comprising at least one vinyl alcohol copolymer and related methods are described. The at least one vinyl alcohol copolymer of the molds is a vinyl alcohol copolymer other than an ethylene-vinyl alcohol copolymer. The methods of manufacturing ophthalmic devices can use dry or wet demolding processes, or dry or wet delensing processes. 1. A method of manufacturing a silicone hydrogel ophthalmic device , comprising: (a) at least one siloxane monomer,', '(b) at least one hydrophilic monomer, and', '(c) at least one crosslinking agent;, 'providing a polymerizable composition, the polymerizable composition comprising'}polymerizing the polymerizable composition in an ophthalmic device mold assembly to form a polymeric ophthalmic device body, wherein at least one mold member of the ophthalmic device mold assembly comprises at least one vinyl alcohol copolymer which is not an ethylene-vinyl alcohol copolymer;contacting the polymeric ophthalmic device body with a washing liquid to remove extractable material from the polymeric ophthalmic device body; andpackaging the polymeric ophthalmic device body in an ophthalmic device packaging solution in an ophthalmic device package.2. The method of claim 1 , wherein the silicone hydrogel ophthalmic device is a silicone hydrogel contact lens claim 1 , the ophthalmic device mold assembly is a contact lens mold assembly claim 1 , the polymeric ophthalmic device body is a polymeric contact lens body claim 1 , the ophthalmic device packaging solution is a contact lens packaging solution claim 1 , and the ophthalmic device package is a contact lens package.3. The method of claim 1 , wherein claim 1 , following release of the polymeric device body from the mold assembly claim 1 , a layer of the at least one vinyl alcohol copolymer is not present on a surface of the polymeric device body.4. The method of claim 1 , wherein ...

Подробнее
Номер записи: 24
25-07-2013 дата публикации

Methods, devices, and systems for injection molding contact lenses

Номер: US20130188123A1
Автор: Gregg A. Dean
Принадлежит: Gregg A. Dean

Methods, devices, and systems for manufacturing ophthalmic lenses using direct injection molding are described. The present methods, devices, and systems include a mold block having a first mold insert and a second mold insert defining a lens-shaped cavity between them. A raised non-uniform region that projects into the lens-shaped cavity is incorporated in a peripheral zone of the molding surface of at least one of the mold inserts. When an ophthalmic lens is formed using the described mold block, at least one depression is produced in the lens. A gate placed at the non-uniform region allows the depression to hide any gate witness that may form when the mold is closed or separated.

Подробнее
Номер записи: 25
25-07-2013 дата публикации

High ionic strength process for contact lens modification

Номер: US20130188124A1
Автор: Christopher R. Loose, Jun Li, Zheng Zhang
Принадлежит: Semprus Biosciences Corp

Medical devices having a wettable, biocompatible surface are described herein. Processes for producing such devices are also described.

Подробнее
Номер записи: 26
01-08-2013 дата публикации

Laminated composite lens

Номер: US20130194539A1
Автор: Jerome A. Legerton
Принадлежит: Individual

The present invention is directed to a composite lens, comprising an anterior rigid gas permeable layer, and an annulus of soft material bonded to a posterior surface of the anterior rigid gas permeable layer, wherein a central zone of the composite lens is rigid and without a soft layer, wherein a peripheral zone of the composite lens is generally rigid in its anterior aspect and soft in its posterior aspect.

Подробнее
Номер записи: 27
22-08-2013 дата публикации

Full rings for a functionalized layer insert of an ophthalmic lens

Номер: US20130215377A1
Автор: Adam Toner, Daniel B. Otts, Frederick A. Flitsch, James Daniel Riall, Randall B. Pugh
Принадлежит: Individual

This invention discloses various designs for rings that make up the functionalized layers in a functional layer insert. More specifically, design parameters for the rings for incorporation into an ophthalmic lens. Additionally, functional aspects of the rings and materials for encapsulating the functional insert into an area outside the optical zone of the ophthalmic lens.

Подробнее
Номер записи: 28
29-08-2013 дата публикации

Lens manufacturing apparatus

Номер: US20130220217A1
Автор: Keishi Shimizu, Shin Yasuda, Tetsuro Kodera, Yoshio Nishihara
Принадлежит: Fuji Xerox Co Ltd

A lens manufacturing apparatus includes a conveying unit that conveys a workpiece having a sheet member and a resin base on the sheet member, an unevenness forming unit that moves a cutting blade in a direction different from the conveying direction of the workpiece and that makes a cut in the surface of the resin base to form concave and convex portions, a resin supply unit that includes nozzles supplying a lens resin to areas, in which the concave portions are not formed, between the convex portions formed on the surface of the resin base, and a resin curing unit that cures the supplied lens resin.

Подробнее
Номер записи: 29
05-09-2013 дата публикации

ANTIMICROBIAL MEDICAL DEVICES

Номер: US20130228943A1
Автор: Gabriel Manal M., Lally John Martin, Qian Xinming, Qiu Yongxing
Принадлежит:

The present invention provides methods for making an antimicrobial medical device, preferably an antimicrobial ophthalmic device, more preferably an antimicrobial extended-wear contact lens, which contains silver nano-particles distributed uniformly therein. The antimicrobial medical device can exhibit antimicrobial activity over an extended period of time. 113-. (canceled)14. A method for making an antimicrobial medical device , comprising the steps of: obtaining a polymerizable fluid composition comprising a siloxane-containing macromer and a soluble silver salt; adding into the fluid composition at least one biocompatible reducing agent to form a mixture , wherein the amount of the biocompatible reducing agent added in the mixture is sufficient to reduce the silver salt into silver nanoparticles; mixing thoroughly the mixture for a period of time sufficient to reduce at least 40% of the silver salt into silver nanoparticles so as to form a polymerizable dispersion; introducing an amount of the polymerizable dispersion in a mold for making a medical device; and polymerizing the mixture in the mold to form the antimicrobial medical device containing silver nanoparticles.15. The method of claim 14 , wherein the medical device is an ophthalmic device.16. The method of claim 15 , wherein the polymerizable fluid composition is obtained by dissolving a desired amount of the silver salt in a formulation selected from the group consisting of formulations of lotrafilcon A claim 15 , lotrafilcon B claim 15 , etafilcon A claim 15 , genfilcon A claim 15 , lenefilcon A claim 15 , polymacon claim 15 , acquafilcon A claim 15 , and balafilcon.18. The method of claim 14 , wherein the polymerizable fluid composition comprises a siloxane-containing monomer and/or a hydrophilic monomer.19. The method of claim 18 , wherein the polymerizable fluid composition comprises: (a) about 20 to 40 weight percent of a siloxane-containing macromer claim 18 , (b) about 5 to 30 weight percent of a ...

Подробнее
Номер записи: 30
03-10-2013 дата публикации

LENS AND LENS FABRICATION METHOD

Номер: US20130256927A1
Автор: Choi Sung-wook, Shin Doo-Sik, Yu Hyun-Ho
Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

Provided is a lens fabrication method including filling liquid-phase resin in a first mold, primarily hardening the liquid-phase resin by heating the liquid-phase resin, secondarily hardening the primarily-hardened resin by irradiating Ultraviolet (UV) rays to the primarily-hardened resin to form a lens, and separating the lens from the first mold. 1. A lens fabrication method , comprising:filling liquid-phase resin in a first mold;primarily hardening the liquid-phase resin by heating the liquid-phase resin;secondarily hardening the primarily-hardened resin by irradiating Ultraviolet (UV) rays to the primarily-hardened resin to form a lens; andseparating the lens from the first mold.2. The lens fabrication method of claim 1 , wherein the first mold comprises a groove in which the liquid-phase resin is filled claim 1 , and the primarily hardening comprises:disposing a second mold comprising a first protruding portion on the first mold; andprimarily hardening the liquid-phase resin by heating the liquid-phase resin in a state where the first mold and the second mold are coupled.3. The lens fabrication method of claim 2 , wherein the second mold is formed of a high heat-conductivity material.4. The lens fabrication method of claim 2 , wherein the liquid-phase resin is heated in a heating furnace.5. The lens fabrication method of claim 4 , wherein the liquid-phase resin is heated to about 250-260° Celsius for about 5-15 seconds.6. The lens fabrication method of claim 2 , wherein the forming of the lens comprises:separating the second mold from the first mold;disposing a third mold comprising a second protruding portion on the first mold, the second protruding portion corresponds to a lens surface of the lens; andsecondarily hardening the primarily-hardened resin by irradiating the UV rays to the primarily-hardened resin in a state where the first mold and the third mold are coupled, to form the lens.7. A lens fabricated using a lens fabrication method according to . ...

Подробнее
Номер записи: 31
10-10-2013 дата публикации

METHOD FOR PRODUCING MOULDED OPTICAL PARTS

Номер: US20130265776A1
Автор: Botzen Manfred, Hermansen Christoph, Klinkenberg Christoph, Zöllner Olaf
Принадлежит: Bayer Intellectual Property GmbH

The invention relates to a method for producing an optical moulded body (), in particular a lens element (), comprising producing a pre-moulding () in a moulding tool by injection moulding of a first plastics material and producing at least one covering layer () on the pre-moulding () by injection moulding of a second plastics material, wherein the temperature of the moulding tool for producing the pre-moulding () is from 30% to 60% lower than the temperature of the moulding tool for producing the at least one covering layer (). 115-. (canceled)17. The method according to claim 16 , wherein an upper covering layer and a lower covering layer are applied to the pre-moulding by simultaneous injection moulding of the covering layers.18. The method according to claim 16 , whereinthe first plastics material is formed of the same plastics material as the second plastics material, orthe first plastics material is formed of a different plastics material than the second plastics material.19. The method according to claim 16 , wherein the plastics material is a transparent thermoplastic plastic claim 16 , in particular polycarbonate.20. The method according to claim 19 , whereinthe temperature of the moulding tool for producing the pre-moulding is from 50° C. to 100° C., preferably from 60° C. to 80° C., particularly preferably approximately 70°, and/orthe temperature of the moulding tool for producing the at least one covering layer is from 90° C. to 130° C., preferably approximately 120° C.21. The method according to claim 16 , wherein a pressure of from 250 bar to 800 bar claim 16 , preferably from 350 bar to 800 bar claim 16 , particularly preferably from 350 bar to 500 bar claim 16 , is generated in the moulding tool during the production of the pre-moulding.22. The method according to claim 16 , wherein the layer thickness ratio between the pre-moulding and the covering layers is from 60:40 to 70:30.23. The method according to claim 17 , wherein the layer thickness of ...

Подробнее
Номер записи: 32
10-10-2013 дата публикации

Optical Hydrogel Material with Photosensitizer and Method for Modifying the Refractive Index

Номер: US20130268072A1
Автор: Ding Li, Jani Dharmendra, Knox Wayne H., Linhardt Jeffrey G., Smith Thomas
Принадлежит:

A method for modifying the refractive index of an optical, hydrogel polymeric material. The method comprises irradiating predetermined regions of an optical, polymeric material with a laser to form refractive structures. To facilitate the formation of the refractive structures the optical, hydrogel polymeric material comprises a photosensitizer. The presence of the photosensitizer permits one to set a scan rate to a value that is at least fifty times greater than a scan rate without the photosensitizer in the material, yet provides similar refractive structures in terms of the observed change in refractive index. Alternatively, the photosensitizer in the polymeric material permits one to set an average laser power to a value that is at least two times less than an average laser power without the photosensitizer in the material, yet provide similar refractive structures. The method can be used to form refractive structures in corneal inlays and intraocular lenses following the insertion of such optical devices in an eye of a patient. 1. A method for modifying the refractive index of an optical , hydrogel polymeric material , the method comprising irradiating predetermined regions of the optical , hydrogel polymeric material with a laser to form refractive structures , wherein the refractive structures exhibit a change in refractive index , and exhibit little or no scattering loss , with respect to the non-irradiated regions of the material , and the optical , polymeric material comprises a photosensitizer to enhance the photoefficiency of two photon absorption by the polymeric material to form the refractive structures , wherein the photosensitizer permits one to irradiate the predetermined regions using a scan rate that is at least fifty times greater than a scan rate without the photosensitizer in the material , or permits one to set an average power of the laser to a value that is at least two times less than an average laser power without the photosensitizer in ...

Подробнее
Номер записи: 33
24-10-2013 дата публикации

METHOD OF MAKING OPHTHALMIC LENSES WITH A STRUCTURED SURFACE

Номер: US20130278892A1
Автор: Jiang Peiqi, Keegan Bruce
Принадлежит: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D' OPTIQUE)

A method for fabricating a Fresnel lens or other lens having a structured surface such as refractive and/or diffractive bi-focal or other multi-focal lenses includes press-coating the structured surface with a low or very low refractive index coating material. The coating is sufficient thick to adequately cover the structured surface so that a smooth coating surface with good optical properties is obtained, for example in the case of a Fresnel structure a thickness greater than 1.5 times and less than 5 times the Fresnel structure height, and is cured in situ. A film, e.g., of PET, PC or PU or a film stack, e.g. a TAC/PVA/TAC film stack is prepared and a heat melting adhesive is applied to the side of the film or film stack to be contacted with the coated structured surface of the lens blank. The film or film stack is then laminated to the cured coating. 1. A method for fabricating an ophthalmic lens having a structured surface such as a Fresnel lens blank , or a refractive and/or diffractive bi-focal or other multi-focal lens blanks , comprising providing a lens blank made of a suitable transparent optical quality material , the lens blank having a structured surface and a non-structured surface; applying a coating to the structured surface of the lens blank so that the coating covers the structured surface and has a suitably smooth free surface with a curvature corresponding generally to the base curvature of the structured surface , curing the coating in situ on the lens blank , providing a relatively rigid film or film stack , and laminating or bonding the film or film stack to the low or very low refractive index.2. A method for fabricating an ophthalmic lens according to claim 1 , characterized in that the lamination includes the application of an adhesive to the film or film stack and the application of the pressure to the film or film stack brought into contact with the cured coating material.3. A method for fabricating an ophthalmic lens according to claim ...

Подробнее
Номер записи: 34
07-11-2013 дата публикации

Soft contact lens application method, liquid for contact lenses and soft contact lens package

Номер: US20130293833A1
Автор: Hiroyuki Yamaguchi, Takashi Yamamoto, Yasunori Tanaka
Принадлежит: Menicon Co Ltd

An object of the invention is to provide an application method capable of facilitating the application of the soft contact lens without using any instrument, a liquid for contact lenses capable of being used for the application method, and a soft contact lens package. The present invention is a method for applying a soft contact lens, including a shrinkage step of shrinking a soft contact lens by contacting the soft contact lens with a liquid for contact lenses, the liquid for contact lenses being capable of shrinking the soft contact lens to a state of being more intensively shrunken than an equilibrium state thereof in a physiological saline; and an application step of applying the shrunken soft contact lens to the eye, in which after the application step, the size of the soft contact lens is restored.

Подробнее
Номер записи: 35
14-11-2013 дата публикации

METHOD FOR MANUFACTURING CONTACT LENSES AND CONTACT LENSES MANUFACTURED THEREFROM

Номер: US20130300010A1
Автор: CHANG Mei-Yun, CHUNG Jui-Feng
Принадлежит: BENQ MATERIALS CORPORATION

The invention provides a method for manufacturing contact lenses, including: (a) mixing a siloxane macromer represented by formula (I), a siloxane macromer represented by formula (II), a hydrophilic monomer, a crosslinking agent and an initiator to form a mixture for manufacturing contact lenses, wherein the mixture for manufacturing contact lenses is free of solvent; and (b) injecting the mixture into a mould of contact lenses and conducting a UV irradiating treatment or a thermal treatment to form contact lenses, wherein formula (I) and formula (II) are shown in following: 2. A method for manufacturing contact lenses according to claim 1 , wherein the siloxane macromer of formula (I) is present at an amount of 1 to 10 parts by weight claim 1 , the siloxane macromer of formula (II) is present at an amount of 30 to 60 parts by weight claim 1 , the hydrophilic monomer is present at an amount of 30 to 65 parts by weight claim 1 , the crosslinking agent is present at an amount of 0.05 to 2 parts by weight and the initiator is present at an amount of 0 claim 1 ,1 to 1 parts by weight based on the total amount of the mixture.4. A method for manufacturing contact lenses according to claim 3 , wherein the molecular weight of the siloxane macromer of formula (III) is 3 claim 3 ,300.6. A method for manufacturing contact lenses according to claim 5 , wherein the molecular weight of the siloxane macromer of formula (IV) is 1 claim 5 ,000.7. A method for manufacturing contact lenses according to claim 1 , wherein the crosslinking agent is selected from the group consisting of ethylene glycol dimethacrylate (EGDMA) claim 1 , trimethylolpropane triacrylate (TMPTA) claim 1 , tetraethylene ethylene glycol dimethacrylate (TEGDMA) claim 1 , tetraethylene ethylene glycol dimethacrylate (TrEGDMA) claim 1 , Poly(ethylene glycol) dimethacrylate claim 1 , trimethylolpropane trimethacrylate claim 1 , vinyl methacrylate claim 1 , ethylenediamine dimethyl acrylamide claim 1 , glycerol ...

Подробнее
Номер записи: 36
21-11-2013 дата публикации

Method of Shaping an Optical Element That is Elastically Deformed by an Adhesively-Bonded Ring

Номер: US20130306224A1
Автор: de Mollerat du Jeu Christian, Ferrari Marc, Hugot Emmanuel, Lemaitre Gerard
Принадлежит:

A method of shaping an aspherical optical element is provided that includes the steps of fastening an optical element blank to a ring, the blank presenting an optical surface that is to be shaped and a surface referred to as a rear surface; applying forces and moments to the ring in order to deform the optical element and its optical surface, which element is fastened to the ring; using abrasion to shape said deformed optical surface so as to restore a spherical or planar shape thereto; and extracting the blank from the ring so as to release the stresses deforming said shaped optical surface so as to allow it to acquire the desired aspherical shape. The method also includes the step of fastening the blank to the ring is performed by bonding the optical surface or the rear surface to a surface of the ring with a layer of adhesive. 1. A method of shaping an aspherical optical element , the method comprising the steps consisting in: an optical surface that is to be shaped and that is a “front” surface; and', 'an opposite surface referred to as a “rear” surface;, 'fastening an optical element blank to a ring, the optical element blank presenting two main surfaces which areapplying forces and moments to the ring in order to deform it in controlled manner, and also deform in controlled manner the blank and its optical surface, which blank is fastened to the ring;using abrasion to shape said deformed optical surface, as to restore it to a shape that is spherical or planar; andextracting the blank from the ring so as to release the stresses deforming said optical surface that has been shaped by abrasion so as to enable said surface to acquire the desired aspherical shape;wherein the method includes the step of fastening the blank to the ring is performed by bonding one of said main surfaces of the blank on a surface of the ring that is parallel thereto and that faces it, by means of a layer of adhesive.2. A method according to claim 1 , wherein the fastening step comprises ...

Подробнее
Номер записи: 37
28-11-2013 дата публикации

Method for Production Imaging Lens Unit

Номер: US20130313730A1
Автор: Fujii Takashi, Miyazaki Takemi, Mori Hajime
Принадлежит:

Method for manufacturing an image pickup lens unit. In the second molding step, by performing additional molding with respect to a first holder member in which a lens has been inserted, the separation of the lens can be prevented and, at the same time, a second holder member welded to the first holder member can be molded. Therefore, molding of the second holder member and the process of joining the second holder member with the first holder member can be performed together. Additionally, when the lens is fixed from the side of a third molding portion of a second mold , the lens and the third molding portion are brought in contact by an elastic biasing force, thereby reducing breakage or deformation of the lens 1. A method for manufacturing an image pickup lens unit including a lens having a first surface on which a first optical surface is formed and a second surface on which a second optical surface is formed on the opposite side of the first surface , a first holder member , and a second holder member configured to hold the lens so as to store the lens in cooperation with the first holder member , the method comprising:a first molding step of filling in a resin material in a mold and molding the first holder member having a positioning portion that is in contact with the second surface of the lens;a positioning step of inserting the lens in the first holder member present in the mold, and positioning the lens by bringing the lens in contact with the positioning portion of the first holder member; anda second molding step of bringing the lens and the mold in contact by an elastic biasing force at the time of fixing the lens from the side of the mold, filling in a resin material in the mold when the lens has been positioned and fixed with respect to the first holder member, and then molding the second holder member such that the second holder member is welded to the first holder member placed inside the mold and having the lens positioned therein, the second holder ...

Подробнее
Номер записи: 38
28-11-2013 дата публикации

PLASTIC OPTICAL ELEMENT AND METHOD OF MANUFACTURING THE SAME

Номер: US20130314798A1
Автор: KIKUCHI Wataru, Kobayashi Daigo
Принадлежит: CANON KABUSHIKI KAISHA

A plastic optical element includes a member and covering portions formed on a first surface and a second surface of the member. A projecting portion made of a material out of which the member is made and a material out of which the covering portions are made is formed on a part of a side surface of the member, and the covering portion of the first surface and the covering portion of the second surface are connected to each other through the projecting portion. 1. A plastic optical element comprising:a member including a first surface, a second surface opposite the first surface, and a side surface connecting the first surface and the second surface;a first covering portion covering the first surface; anda second covering portion made of a material the same as a material out of which the first covering portion is made, the second covering portion covering the second surface,wherein a protruding portion that is made of a material the same as a material out of which the member is made and a connecting portion that is made of a material the same as the material out of which the first covering portion is made and that is formed adjacent to the protruding portion, the connecting portion connecting the first covering portion and the second covering portion to each other, are formed on a part of the side surface of the member, andthe protruding portion and the connecting portion are integrated with each other so as to form a projecting portion.2. The plastic optical element according to claim 1 ,wherein the projecting portion is formed at two positions on the side surface of the member.3. The plastic optical element according to claim 1 ,wherein the material out of which the member is made and the material out of which the first covering portion and the second covering portion are made include the same material.4. The plastic optical element according to claim 1 ,wherein the material out of which the member is made and the material out of which the first covering portion ...

Подробнее
Номер записи: 39
12-12-2013 дата публикации

METHOD FOR PRODUCING A POLARISING LENS AND CORRESPONDING POLARISING LENS

Номер: US20130329185A1
Автор: CLERC Didier, LEDIEN Franck
Принадлежит: BNL Eurolens

A polarizing lens is constituted in succession by a mechanical support layer made of polycarbonate, the intermediate layer made of polyvinyl alcohol, and an outer layer made of cellulose triacetate. The invention also provides a method of fabricating such a lens. 1. A method of making a lens , the method comprising the steps of:preheating a laminated film comprising an outer layer of cellulose triacetate (CTA), an intermediate layer of polyvinyl alcohol (PVA), and an outer layer of polycarbonate (PC), with different temperatures for the outer layers of the laminated film;thermoforming the laminated film while heating the outer layers differently;placing the thermoformed film in a mold having the shape of the lens in such a manner that the cellulose triacetate outer layer extends against a wall of the mold;injecting polycarbonate into the mold in such a manner that the layer of polycarbonate fuses with the injected polycarbonate to form the mechanical support layer of the lens; andunmolding the lens as formed in this way.2. The method according to claim 1 , wherein the preheating is preceded by drying the film.3. The method according to claim 1 , wherein the thermoforming is performed in a mold comprising a convex part and a concave part.4. The method according to claim 3 , wherein claim 3 , during the thermoforming claim 3 , the convex part and the concave part are heated to different temperatures.5. The method according to claim 1 , wherein the deformation of the film during the thermoforming step is performed by applying controlled pressure.6. The polarizing lens obtained by the method according to claim 1 , the lens comprising in succession: a mechanical support layer comprising a polycarbonate thermoplastic polymer forming a rear face of the lens; and intermediate layer of polyvinyl alcohol; and an outer layer of cellulose triacetate forming a front face of the lens.7. The polarizing lens according to claim 6 , which lens is a correcting polarizing lens.8. The ...

Подробнее
Номер записи: 40
26-12-2013 дата публикации

LENS COMPRISING LOW AND HIGH MOLECULAR WEIGHT POLYAMIDES

Номер: US20130341811A1
Автор: Alli Azaam, Mahadevan Shivkumar
Принадлежит:

The present invention relates to a contact lens formed from components including (i) at least one silicone component, (ii) at least one low molecular weight polyamide having a weight average molecular weight of less than 200,000, and (iii) at least one high molecular weight polyamide having a weight average molecular weight of greater than 200,000, wherein the low molecular weight polyamide does not contain a reactive group. 1. A method of manufacturing a contact lens , said method comprising the steps of:(i) dispensing to a mold a reactive mixture comprising (i) at least one silicone component, (ii) at least one low molecular weight polyamide having a weight average molecular weight of less than 200,000, (iii) at least one high molecular weight polyamide having a weight average molecular weight of greater than 200,000, and (iv) less than about 15 wt % diluent, wherein said low molecular weight polyamide does not contain a reactive group;(ii) curing said reactive mixture within said mold to form said contact lens; and(iii) removing said contact lens from said mold, without liquid.2. The process of claim 1 , wherein said at least one low molecular weight polyamide has a weight average molecular weight of less than 100 claim 1 ,0003. The process of claim 1 , wherein said at least one high molecular weight polyamide has a weight average molecular weight of greater than 400 claim 1 ,0004. The process of claim 2 , wherein said low molecular weight polyamide is a polyvinylpyrrolidone.5. The process of claim 3 , wherein said high molecular weight polyamide is a polyvinylpyrrolidone.6. The process of claim 4 , wherein said high molecular weight polyamide is a polyvinylpyrrolidone.7. The process of claim 6 , wherein said low molecular weight polyamide is selected from the group consisting of PVP K30 claim 6 , PVP K15 claim 6 , PVP K12 and mixtures thereof.8. The process of claim 6 , wherein said high molecular weight polyamide is selected from the group consisting of PVP K60 ...

Подробнее
Номер записи: 41
09-01-2014 дата публикации

Electro-Active Diffractive Lens and Method for Making the Same

Номер: US20140009700A1
Автор: James John, Joshua N. Haddock, Peter Crossley, Philip Rawlins, Roger Clarke, William Kokonaski
Принадлежит: PixelOptics Inc

Aspects of the present invention provide an electro-active lens and method for manufacturing the same that encapsulates liquid crystal using solid transparent optical material using an improved liquid crystal seal feature. The seal feature greatly reduces the visibility of the liquid crystal seal feature in an assembled electro-active lens. The seal feature is also structurally robust such that the electro-active lens can be processed to fit a spectacle frame without disturbing containment of the liquid crystal and without disrupting electrical connectivity to the lens used to alter the refractive index of the liquid crystal, thereby ensuring fabrication of a commercially viable electro-active lens.

Подробнее
Номер записи: 42
16-01-2014 дата публикации

OPTICAL MEMBER AND METHOD FOR PRODUCING SAME

Номер: US20140016204A1
Автор: HAKUTA Shinya, SONODA Shinichiro, YUUYA Shigenori
Принадлежит: FUJIFILM Corporation

Provided is an optical member, including: a substrate having an at least partially curved surface; a concave-convex structure at an outermost surface, the concave-convex structure being prepared by hydrothermal treatment of a layer formed by gas-phase deposition of at least one of simple aluminum and a compound containing aluminum on the substrate; and a dielectric layer formed by gas-phase deposition between the substrate and the concave-convex structure. 1. An optical member , comprising:a substrate having an at least partially curved surface;a concave-convex structure at an outermost surface, the concave-convex structure being prepared by hydrothermal treatment of a layer formed by gas-phase deposition of at least one of simple aluminum and a compound containing aluminum on the substrate; anda dielectric layer formed by gas-phase deposition between the substrate and the concave-convex structure.2. The optical member according to claim 1 ,wherein the layer formed by gas-phase deposition of at least one of simple aluminum and a compound containing aluminum is composed of at least one of aluminum and alumina.3. The optical member according to claim 1 ,wherein the hydrothermal treatment is an immersion treatment into hot water having a temperature of 60° C. or more but a boiling point thereof or less, or an alkaline aqueous solution having a temperature of 60° C. or more but a boiling point thereof or less.4. The optical member according to claim 1 ,wherein the hydrothermal treatment is an exposure treatment to water vapor.5. The optical member according to claim 1 ,wherein an average height of a convex portion of the concave-convex structure is 5 nm to 1,000 nm.6. The optical member according to claim 2 ,wherein an average thickness of the outermost layer composed of aluminum formed by gas-phase deposition is 100 nm or less before the hydrothermal treatment.7. The optical member according to claim 2 ,wherein an average thickness of the outermost layer composed of ...

Подробнее
Номер записи: 43
06-02-2014 дата публикации

CONTACT LENS MANUFACTURING METHOD

Номер: US20140035176A1
Автор: Hamilton Ronald
Принадлежит: DAYSOFT LIMITED

In manufacturing a contact lens, a contact lens mould arrangement in which the engagement between the mould halves is unconstrained and at least one mould half is sufficiently pliable or flexible that during the curing of the contact lens composition at one mold half may move or flex relative to the other to define a post-cure mould cavity of smaller volume than the pre-cure mould cavity and during which the curvatures of the first and/or second mould surfaces are allowed to change provides a significantly more efficient manufacturing process and enables one mould half to be readily utilized as a blister cup for contact lens packaging. 2. The method according to claim 1 , wherein the first and/or second mould halves exhibit no discontinuity in flexibility across the corresponding first and/or second mould surface.3. The method according to claim 1 , wherein claim 1 , prior to curing claim 1 , the first and/or second mould surfaces have a different curvature to the corresponding surface of the pre-hydrated contact lens formed.4. The method according to claim 1 , wherein at least the first mould half is formed of a material sufficiently pliable under curing conditions that during curing claim 1 , the radial dimension defined by the diameter of the annular ridge changes to accommodate the volumetric reduction of lens-forming composition due to curing.5. The method according to claim 1 , wherein the only contact between the first and second mould halves is at the lens cavity-defining circumference claim 1 , whereby the annular ridge abuts the surface of the opposing mould half.6. The method according to claim 1 , wherein the annular ridge is formed on the first mould half.7. The method according to claim 6 , wherein the first mould surface defines a return claim 6 , thereby allowing the pre-hydrated lens to be retained in the first mould half upon separation of the mould halves.8. The method according to claim 7 , which further comprises releasing at least the edges of ...

Подробнее
Номер записи: 44
06-02-2014 дата публикации

Electro-Active Opthalmic Lens Having an Optical Power Blending Region

Номер: US20140036226A1
Автор: Ronald D. Blum, William Kokonaski
Принадлежит: E Vision Smart Optics Inc

A spectacle lens is disclosed. The disclosed lens provides a vision correcting area for the correction of a wearer's refractive error. The viewing correction area provides correction for non-conventional refractive error to provide at least a part of the wearer's vision correction. The lens has a prescription based on a wave front analysis of the wearer's eye and the lens can further be modified to fit within an eyeglass frame.

Подробнее
Номер записи: 45
06-03-2014 дата публикации

METHODS AND APPARATUS FOR FORMING A TRANSLATING MULTIFOCAL CONTACT LENS

Номер: US20140063444A1
Автор: Adams Jonathan P., Widman Michael, Wildsmith Christopher
Принадлежит: JOHNSON & JOHNSON VISION CARE, INC.

The present invention discloses a translating multifocal contact lens including one or more of multiple Optic Zones, a lower-lid contact surface, and an under-lid support structure and method steps and apparatus for implementing the same. In preferred embodiments, a translating multifocal lens with at least a portion of one surface may be Free-formed comprising one or both of a lower-lid contact surface and an under-lid support structure capable of limiting the amount of translation of a lens across a surface of an eye when an eye changes from one Optic Zone to another. 1. An apparatus for forming a translating multifocal contact lens , the apparatus comprising:a light source emanating light in a wavelength comprising actinic radiation;a processor in logical communication with a memory wherein said memory stores executable code, executable upon demand to cause the processor to generate one or more control signals for controlling the digital mirror device to project the actinic radiation through an arcuate substrate to:form a contact lens comprising an anterior surface and a posterior surface on a voxel by voxel basis, wherein said anterior surface and said posterior surface comprise respective arcuate shapes and meet at a Lens Edge;form an optical-power region to provide vision correction for an eye of a user wherein said optical-power region comprises multiple Optic Zones;form a lower-lid contact surface wherein the lower-lid contact surface limits the amount of said lens translocation upon the eye of the user when the user changes direction of vision and the user's line of sight moves from at least one Optic Zone to another said Optic Zone; andform an under-lid support structure.2. The apparatus of wherein the lens comprises a Free-form lens.3. The apparatus of wherein the anterior surface comprises one or more of a peripheral region; a Stabilization Zone; and an optical-power region.4. The apparatus of wherein the Lens Edge extends radially from the outer edge of ...

Подробнее
Номер записи: 46
20-03-2014 дата публикации

LIQUID FORMULATION FOR OPHTALMIC DEVICES

Номер: US20140081396A1
Автор: Maillard Mathieu
Принадлежит: PARROT SA

According to a first aspect, the invention relates to an intraocular variable focus implant comprising a non-conducting liquid with a melting temperature above 0° C., a conducting liquid, a liquid interface formed by the non-conducting and conducting liquids, a first electrode in contact with the conducting liquid, a second electrode insulated from the conducting liquid, wherein the liquid interface is movable by electro wetting according to a change in a voltage applied between the first and second electrodes. 1. An intraocular variable focus implant comprising:a non-conducting liquid with a melting temperature above 0° C.;a conducting liquid;a liquid interface formed by the non-conducting and conducting liquids;a first electrode in contact with the conducting liquid; anda second electrode insulated from the conducting liquid,wherein the liquid interface is movable by electrowetting according to a change in a voltage applied between the first and second electrodes.2. The intraocular variable focus implant of claim 1 , wherein the non-conducting liquid comprises a mixture of compounds wherein at least one of the compounds has a melting temperature above an intraocular temperature.38-. (canceled)9. The intraocular variable focus implant of claim 2 , wherein one of the compounds in the non-conducting liquid acts as a membrane between the non-conducting and conducting liquids below the intraocular temperature and above 0° C.10. The intraocular variable focus implant of claim 1 , wherein the non-conducting liquid comprises one or more compounds selected from the group consisting of a linear alkane [CH] where n is greater than 15 and less than 22 claim 1 , a diphenyl alkane [CH—(CH)] where n is greater than 1 and less than 5 claim 1 , vinyl triphenylsilane claim 1 , diphenylsulfide claim 1 , palmitic acid claim 1 , 1 claim 1 ,4 claim 1 ,-di-ter-butylbenzene claim 1 , 1-methylfluoene claim 1 , 9 claim 1 ,10-dihydroanthracene claim 1 , fluorene claim 1 , ...

Подробнее
Номер записи: 47
27-03-2014 дата публикации

SYSTEM FOR FORMING AND MODIFYING LENSES AND LENSES FORMED THEREBY

Номер: US20140084501A1
Автор: Bille Josef F.
Принадлежит:

A lens for placement in a human eye, such as intraocular lens, has at least some of its optical properties formed with a laser. The laser forms modified loci in the lens when the modified loci have a different refractive index than the refractive index of the material before modification. Different patterns of modified loci can provide selected dioptic power, toric adjustment, and/or aspheric adjustment provided. Preferably both the anterior and posterior surfaces of the lens are planar for ease of placement in the human eye. 1110-. (canceled)111. A method for modifying an optical property of a lens sized for placement in a human eye comprising the steps of:a) holding the lens external to an eye, the lens having an anterior surface, a posterior surface and an optical axis, and formed of an optical material having a first refractive index; andb) forming a contiguous three-dimensional patterned microstructure within a layer of the lens by modifying a plurality of contiguous loci in the layer by optically distributing a focused pulsed laser beam on each locus of said plurality of contiguous loci, causing a nonlinear absorption of photons by the optical material of each modified locus resulting in the optical material of the modified loci having a second refractive index that is different than the optical material before modification;wherein the contiguous three-dimensional patterned microstructure comprises a phase shifting optical structure that modifies the optical property of the lens, said phase shifting optical structure comprising a plurality of full-wave, phase-wrapped zones that compensate for optical path length differences within an array of neighboring rays.112. The method of claim 111 , wherein the contiguous three-dimensional patterned microstructure formed in the forming step comprises a refractive structure.113. The method of claim 111 , wherein the layer is planar.114. The method of claim 111 , wherein the layer is substantially perpendicular to the ...

Подробнее
Номер записи: 48
27-03-2014 дата публикации

Methods of wound care and treatment

Номер: US20140086963A1
Автор: Anthony B. Wood, Gregory J. Archambeau, Richard L. Watson
Принадлежит: Microdiffusion Inc

Particular embodiments disclosed herein relate to gas-enriched fluids, methods of making the same, systems for making the same and/or methods of treatment utilizing the gas-enriched fluids for wound care related conditions and/or diseases. In certain embodiments, the gas-enriched fluid is oxygen-enriched water. Certain embodiments relate to cosmetic and/or therapeutic fluids and/or methods of treatment utilizing the fluids in order to treat a cosmetic and/or therapeutic symptom of wound care and/or increase proper wound healing.

Подробнее
Номер записи: 49
03-01-2019 дата публикации

Ophthalmic lens with glucose sensitive pad and method for manufacturing same

Номер: US20190000359A1
Автор: Hsiu-Wen Chien
Принадлежит: Hon Hai Precision Industry Co Ltd

An ophthalmic lens with glucose sensitive pad to indicate body glucose levels by changing color when in contact with tears from the eye includes a matrix, the matrix comprising a contact surface, the contact surface defining a micro-channel; and at least one glucose sensitive pad received in the micro-channel. A method for manufacturing an ophthalmic lens with glucose sensitive pad is also provided.

Подробнее
Номер записи: 50
07-01-2021 дата публикации

LIGHT MODIFIER COMPRISED OF PRINTED OPTICAL ELEMENTS

Номер: US20210001578A1
Автор: Nykerk Todd
Принадлежит:

Disclosed is a method for making a lens for a vehicle light. The process involves the growth of a clear or translucent ink on a clear or transparent substrate. The deposited ink forms light-modifying optical elements on the lens, which is then incorporated into a vehicle light assembly. 1. A process for making a light modifying article for an illumination device , the process comprising:providing a clear or translucent substrate;growing at least one optical element on the substrate using a printing process using an ink that is either clear or translucent.2. The process of comprising:incorporating the article as a lens into the illumination device, the illumination device being configured for mounting into a vehicle.3. The process of wherein the growing step comprises:growing a plurality of optical elements onto the substrate.4. The process of wherein the growing step comprises:growing the plurality of optical elements onto a portion of the article, and leaving another portion of the article void of optical elements.5. The process of wherein the growing step comprises:creating the plurality of optical elements layer by layer thus defining chasms between each of the optical elements in the plurality, and plateaus at the top of each of the optical elements before completion of the article.6. The process of comprising:incorporating the substrate into a vehicle lamp assembly such that the at least one optical element is on the interior of the assembly on a substrate surface facing a light source.7. The process of comprising:incorporating the substrate into a vehicle lamp assembly such that the at least one optical element is on the exterior of the assembly opposite a light source.8. The process of wherein the substrate comprises Polycarbonate.9. The process of wherein the substrate comprises Polymethyl Methacrylate (PMMA).10. The process of comprising:applying an adhesion promoting material onto the substrate before executing the growing step.11. The process of ...

Подробнее
Номер записи: 51
07-01-2021 дата публикации

METHOD FOR MANUFACTURING SPECTACLE LENSES ACCORDING TO A PRESCRIPTION

Номер: US20210001579A1
Автор: Meschenmoser Ralf, Pittolo Michael
Принадлежит:

A method for manufacturing a spectacle lens according to a prescription includes: 1. A method for manufacturing a spectacle lens according to a prescription , the method comprising:providing a semi-finished spectacle lens blank having a first face possessing a final curvature, the first face being coated with a permanent top coating, and a second face opposite the first face; blocking the first face being coated with a permanent top coating by mounting the semi-finished spectacle lens blank on a block piece such that the first face of the semi-finished spectacle lens blank faces the block piece; or', 'fixing the semi-finished spectacle lens blank on a vacuum chuck or a holding chuck such that the first face of the semi-finished spectacle lens blank faces the vacuum chuck or the holding chuck;, 'performing one ofsurfacing the blocked semi-finished spectacle lens blank or the fixed semi-finished spectacle lens blank on the second face to obtain a surfaced spectacle lens blank having a final curvature of the second face;deblocking the surfaced spectacle lens blank from the block piece or removing the surfaced spectacle lens blank from the vacuum chuck or the holding chuck prior to a subsequent coating step of the second face; and{'sup': '2', 'providing an outer surface of the first face being coated with the permanent top coating of the finished spectacle lens ready for use for a spectacles wearer and having a surface energy of less than 20 mJ/m.'}2. A method for manufacturing a spectacle lens according to a prescription , the method comprising:{'sup': '2', 'providing a semi-finished spectacle lens blank having a first face possessing a final curvature, the first face being coated with a permanent top coating having a surface energy of less than 20 mJ/m, and a second face opposite the first face;'}applying an adhesive tape on top of the permanent top coating and onto an edge between the first face and the second face; blocking the first face being coated with a ...

Подробнее
Номер записи: 52
05-01-2017 дата публикации

Ophthalmic Device Molds Formed From Water-Soluble Vinyl Alcohol Copolymer, Ophthalmic Devices Molded Therein, And Related Methods

Номер: US20170001391A1
Автор: Bialek Edyta S., Bruce Ian, Goodenough Neil, Morsley David Robert, Norris Lee Darren
Принадлежит: COOPERVISION INTERNATIONAL HOLDING COMPANY, LP

Ophthalmic device molds made from at least one water-soluble vinyl alcohol copolymer, ophthalmic devices such as ocular inserts and contact lenses and including silicone hydrogel devices formed using these molds, packaged ophthalmic devices present in a solution comprising the at least one water-soluble vinyl alcohol copolymer, and related methods are described. The methods of manufacturing ophthalmic devices can use wet demolding processes, or wet delensing processes or both wet demolding and wet delensing processes involving dissolving the molds in water or an aqueous solution. 116-. (canceled)17. A silicone hydrogel contact lens , comprising:a cast-molded silicone hydrogel polymeric contact lens body comprising the reaction product of a polymerizable composition, the polymerizable composition comprising at least one silicon-containing monomer and at least one hydrophilic monomer;wherein the silicone hydrogel polymeric contact lens body is a cast-molded lens body formed from the polymerizable composition in a mold assembly comprising a first mold member and a second mold member, at least one of the first mold member and the second mold member comprising at least one water-soluble vinyl alcohol copolymer;wherein the at least one water-soluble vinyl alcohol copolymer is a vinyl alcohol copolymer essentially free of ethylene units.18. A packaged silicone hydrogel contact lens , comprising:a blister package formed of a hydrophobic polymer material;a cast-molded silicone hydrogel polymeric contact lens body comprising the reaction product of a polymerizable composition, the polymerizable composition comprising at least one silicone monomer and at least one hydrophilic monomer; anda liquid comprising the dissolution product of at least one water-soluble vinyl alcohol copolymer in an ophthalmically acceptable packaging solution;wherein the at least one water-soluble vinyl alcohol copolymer is a vinyl alcohol copolymer essentially free of ethylene units.19. A mold for ...

Подробнее
Номер записи: 53
04-01-2018 дата публикации

COMPOSITIONS, SYSTEMS AND METHODS FOR PATIENT SPECIFIC OPHTHALMIC DEVICE

Номер: US20180001581A1
Автор: Patel Jayant K., Patel Kieren J., Sun Cheng, Talati Rushi K., Zhang Hao F.
Принадлежит:

Systems, methods, and devices to fabricate one or more device components are disclosed. An example method includes fabricating one or more subject specific device components generated from receiving one or more images of one or more features of the first eye of the subject; designing a three dimensional virtual geometric model of the ophthalmic device using the one or more images; generating a plurality of virtual cross-sections of the three-dimensional virtual geometric model, wherein the cross-sections are defined by a set of physical parameters derived from the three-dimensional model; and fabricating the one or more subject specific features using the plurality of virtual cross-sections of the three dimensional model to direct an additive manufacturing method. 1. A method for generating an ophthalmic device for a first eye of a subject , the method comprising:a. receiving one or more images of one or more features of the first eye of the subject;b. designing a three dimensional virtual geometric model of the ophthalmic device using the one or more images;c. generating a plurality of virtual cross-sections of the three-dimensional virtual geometric model, wherein the cross-sections are defined by a set of physical parameters derived from the three-dimensional model;d. fabricating the ophthalmic device using the plurality of virtual cross-sections of the three dimensional model to direct an additive manufacturing method.2. The method of claim 1 , wherein the receiving one or more images of the one or more features of the eye of a subject further comprises use of ultrasound claim 1 , bio-microscopy claim 1 , optical coherence tomography claim 1 , tomography claim 1 , magnetic resonance imaging claim 1 , computed tomography scanning claim 1 , light microscopy claim 1 , photoacoustic microscopy claim 1 , wave-front sensing claim 1 , corneal tomography claim 1 , biometry claim 1 , intraocular biometry or fundus photography to generate the one or more images.3. The ...

Подробнее
Номер записи: 54
02-01-2020 дата публикации

Hydrogel contact lenses with lubricious coating thereon

Номер: US20200001555A1
Автор: Jared Nelson, John Dallas Pruitt, Yongxing Qiu
Принадлежит: NOVARTIS AG

The invention is generally related to soft contact lenses which comprise a non-silicone hydrogel lens body and a hydrogel coating thereon. The non-silicone hydrogel lens body is composed of a hydrogel material which is free of silicone and comprises at least 50% by mole of repeating units of at least one hydroxyl-containing vinylic monomer. The hydrogel coating comprises a first polymeric material having first reactive functional groups and a hydrogel layer derived from a second polymeric material having second reactive functional groups, and the hydrogel layer is covalently attached onto the anchor layer through linkages each formed between one first reactive functional group and one second reactive functional group. The soft contact lens has a surface lubricity better than the lubricity of the non-silicone hydrogel lens body and has a friction rating of about 2 or lower after 7 cycles of manual rubbing, a water content of from about 10% to about 85% by weight and an elastic modulus of from about 0.2 MPa to about 1.5 MPa when being fully hydrated at room temperature.

Подробнее
Номер записи: 55
02-01-2020 дата публикации

ULTRA-HIGH DK MATERIAL

Номер: US20200002452A1
Автор: Bonafini, JR. James A.
Принадлежит: Acuity Polymers, Inc.

A method of producing an ultra-high Dk material includes contacting and reacting a fluoroalkyl methacrylate; an alkyl glycol dimethacrylate; a hydrophilic agent, such as methacrylic acid; a hydroxyalkyl tris(trimethylsiloxy)silane; a hydroxyalkyl terminated polydimethylsiloxane; and styrylethyltris(trimethylsiloxy)silane. The reaction is conducted within an inert atmosphere at a pressure of at least 25 pounds per square inch (PSI) and for a period of time and at a temperature sufficient to produce the ultra-high Dk material. 2. The method of wherein the fluoroalkly methacrylate is hexafluoroisopropyl methacrylate; the alkyl glycol dimethacrylate is neopentyl glycol dimethacrylate; the hydroxyalkyl tris(trimethylsiloxy)silane is 3-methacryloyloxypropyl tris(trimethylsiloxy)silane; the hydroxyalkyl terminated polydimethylsiloxane is 4-methacryloxybutyl terminated polydimethylsiloxane; the hydrophilic agent is methacrylic acid.3. The method of wherein the styrylethyltris(trimethylsiloxy)silane comprises 14% of the material claim 2 , by weight.4. The method of wherein the styrylethyltris(trimethylsiloxy)silane comprises between 7% and 20% of the material claim 1 , by weight.5. The method of wherein the styrylethyltris(trimethylsiloxy)silane comprises 14% of the material claim 4 , by weight.6. The method of wherein the material has a Dk value greater than 175.7. The method of wherein the reaction is conducted under a nitrogen claim 1 , argon or helium atmosphere.8. The method of wherein the reaction is conducted between 25 psi and 1 claim 1 ,000 psi.9. The method of wherein the reaction is conducted within a vessel wherein the ultra-high Dk material is formed in the shape of the vessel.10. The method of wherein vessel is selected whereby the high Dk material is formed as a lens claim 9 , blank or rod.11. The method of wherein the vessel is constructed of a vessel material that is permeable to the inert gas comprising the inert atmosphere.12. The method of wherein the ...

Подробнее
Номер записи: 56
07-01-2016 дата публикации

WAFER-LEVEL LENS SYSTEMS AND METHODS FOR MANUFACTURING THE SAME

Номер: US20160004049A1
Автор: DENG Jau-Jan, Yin Chuen-Yi
Принадлежит:

A wafer-level lens system includes one or more wafer-level lenses, each of the one or more wafer-level lenses having a substrate with opposing first and second surfaces, a first lens element of a first material and disposed on the first surface, and a second lens element of a second material and disposed on the second surface, wherein, for at least one of the one or more wafer-level lenses, the first material is different from the second material. Another wafer-level lens system includes three wafer-level lenses optically coupled in series with each other, each of the three wafer-level lenses having a substrate with opposing first and second surfaces, a first lens element disposed on the first surface and having an aspheric surface facing away from the first surface, and a second lens element disposed on the second surface and having an aspheric surface facing away from the second surface. 2. The wafer-level lens system of claim 1 , wherein claim 1 , for at least one of the one or more wafer-level lenses claim 1 , the first material has index of refraction different from that of the second material.3. The wafer-level lens system of claim 2 , wherein claim 2 , for at least one of the one or more wafer-level lenses claim 2 , the first material has Abbe number different from that of the second material.4. The wafer-level lens system of claim 1 , the one or more wafer-level lenses defining three wafer-level lenses optically coupled in series with each other.5. The wafer-level lens system of claim 4 , for each of the three wafer-level lenses claim 4 , each of the first and second lens element having an aspheric surface facing away from the substrate.6. The wafer-level lens system of claim 4 , the one or more wafer-level lenses comprising a first wafer-level lens located furthest from the image plane claim 4 , the first lens element and the second lens element of the first wafer-level lens composed of different materials.7. The wafer-level lens system of claim 4 , having ...

Подробнее
Номер записи: 57
04-01-2018 дата публикации

OPTICAL COMPONENT, OPTICAL COMPONENT MANUFACTURING METHOD, AND CAMERA

Номер: US20180003917A1
Автор: Tobita Shusuke
Принадлежит:

A portion of a holder is in contact with a lens surface, a holding portion configured to hold a lens in the holder is provided, and a mold shrinkage factor of a material that forms the holder is smaller than a mold shrinkage factor of a material that forms the lens by no less than 0.3%. 1. An optical component comprising:a lens having a lens surface held in a holder;a portion of the holder in contact with the lens surface; anda holding portion configured to hold the lens in the holder,wherein a mold shrinkage factor of a material that forms the holder is smaller than a mold shrinkage factor of a material that forms the lens by no less than 0.3%.2. The optical component according to claim 1 ,wherein the holding portion is a portion in which a projection portion projecting from an attachment portion formed on the lens cuts into the holder.3. The optical component according to claim 2 ,wherein the projection portion has a diameter that increases toward the attachment portion.4. The optical component according to claim 1 ,wherein the lens is an eyepiece, and an ocular-side lens surface is in contact with the holder.5. The optical component according to claim 1 ,wherein a material that forms the holder is a material in which reinforced fiber is mixed in a material containing polycarbonate, ABS, PS, PMMA, or a composite material thereof.6. The optical component according to claim 5 ,wherein the reinforced fiber has a content of no less than 10% by weight nor more than 50% by weight relative to the material that forms the holder.7. The optical component according to claim 1 ,wherein the material that forms the lens contains a cyclic olefin.8. A camera comprising:an optical component including a lens that has a lens surface and that is held in a holder,a portion of the holder in contact with the lens surface, anda holding portion configured to hold the lens in the holder is provided,wherein a mold shrinkage factor of a material that forms the holder is smaller than a mold ...

Подробнее
Номер записи: 58
02-01-2020 дата публикации

THINNED AND FLEXIBLE SEMICONDUCTOR ELEMENTS ON THREE DIMENSIONAL SURFACES

Номер: US20200004048A1
Автор: Flitsch Frederick A. Flitsch A., James Daniel Riall James Daniel Riall Daniel, Otts Daniel B., Pugh Randall B, Toner Adam
Принадлежит:

Methods to form a device whereon flexible component elements are attached upon three-dimensional surfaces are described. In some aspects, the present invention includes incorporating flexible semiconductor devices onto three-dimensional surfaces with electrical contacts. In some aspects, the formed device may be incorporated in an ophthalmic device. 1. An ophthalmic device comprising:a three-dimensional feature having a cylindrical shape;electrical contacts formed upon the three-dimensional surface;an electronic element attached to the electrical contacts, wherein the electronic element comprises a thinned flexible semiconductor bent to conform to the three-dimensional feature along at least a portion of the cylindrical shape.2. The ophthalmic device of claim 1 , wherein the electronic element is formed from a rectilinear-shaped material.3. The ophthalmic device of claim 1 , wherein the three-dimensional feature comprises a variable optic component.4. The method of claim 1 , wherein the semiconductor comprises crystalline silicon claim 1 , polycrystalline silicon claim 1 , or amorphous silicon.5. The ophthalmic device of claim 1 , wherein the three-dimensional eature and the electronic element are housed within a media insert.6. The ophthalmic device of claim 1 , wherein the three-dimensional feature is formed in a helical shape in three dimensions and wherein the thinned flexible semiconductor is bent in the third dimension to take on the helical shape of the substrate.7. The ophthalmic device of claim 1 , wherein cylindrical shape of the substrate insert has a radius of within about 7 mm and 9 mm.8. The ophthalmic device of claim 1 , wherein the thinned flexible semiconductor comprises a semiconductor-on-insulator substrate.9. The ophthalmic device of claim 1 , wherein the thinned flexible semiconductor comprises at least one interconnection feature configured to shield at least a portion of the thinned flexible semiconductor from incident light radiation. This ...

Подробнее
Номер записи: 59
01-01-2015 дата публикации

Methods for Adhering a Substrate to a Polymer Layer

Номер: US20150005602A1
Автор: Jeffrey George Linhardt, Zenghe Liu
Принадлежит: Google LLC

The present disclosure provides a method including forming a polymer layer defining a side of an eye-mountable device. The method may also include providing an adhesive in a ring-shaped pattern on a ring-shaped substrate or on the first polymer layer. The method may also include providing the ring-shaped substrate on the first polymer layer in a predetermined rotational orientation. The method may also include applying a force to one or more of the ring-shaped substrate and the polymer layer to adhere the first polymer layer to the ring-shaped substrate. The method may also include curing the ring-shaped substrate and the first polymer layer.

Подробнее
Номер записи: 60
12-01-2017 дата публикации

Method Of Making Contact Lenses

Номер: US20170008240A1
Автор: Blaine Jonathan Andrew Lindley, Clamp John Haldyn, Clark David John, Maine Phillip James, Miller Gary Colin
Принадлежит:

The invention relates to a method of making a contact lens, the method comprising identifying the eccentricity of a lens produced in a mould half, lathing the lens and adjusting the path of the lathe to take account of the eccentricity, and a computer programme for controlling the lathe. 1. A method of making a contact lens , the method comprising:(i) providing a first master mould for producing a first mould half and a second master mould for producing a second mould half(ii) producing at least one precursor mould comprising the first mould half and the second mould half, wherein the first mould half is for providing a first lens surface having at least one optical feature and the second mould half is for providing a second lens surface which requires lathing to provide at least one added optical feature;(iii) producing a moulded precursor contact lens in each of the at least one moulds, wherein the step of producing the lens results in at least one identifiable undesirable attribute;(iv) identifying the at least one undesirable attribute on the precursor contact lens;(v) determining the extent of the at least one undesirable attribute;(vi) providing at least one lens producing mould formed from the master moulds, each lens producing mould having a first mould half and a second mould half, wherein the first mould half is for providing a first lens surface having at least one optical feature and the second mould half is for providing a second lens surface which requires lathing to provide at least one added optical feature;(vii) producing the contact lens in at least one lens producing mould;(viii) removing the second mould half, whereby the contact lens remains positioned on the first mould half; and(ix) lathing the second lens surface using a lathe tool, wherein the path of the lathe tool is controlled by a computer programme, and wherein the computer programme adjusts the path to compensate for the undesirable attribute of the test contact lens identified in step ...

Подробнее
Номер записи: 61
10-01-2019 дата публикации

METHOD FOR ASSEMBLING THREE-DIMENSIONAL OPTICAL COMPONENTS AND ASSEMBLY KIT

Номер: US20190009481A1
Автор: Biskop Joris
Принадлежит:

A method for assembling a three-dimensionai optical component from a base body, including providing the base body and loading the base body on a substrate into a printer in a providing step, depositing droplets of printing ink on a first surface of the base body in a first printing step in order to build up an intermediate first pre-structure, depositing droplets of printing ink on a second surface of the base body in a second printing step in order to build up an intermediate second pre-structure, rotating the first pre-structure and arranging the first pre-structure on a support structure in a rearrangement step between the first printing step and the second printing step, wherein the support structure includes a carrier substructure and an extension of the base body rests at least partially on the carrier substructure. The teachings further relate to an assembled optical component and an assembly kit. 1. A method for assembling three-dimensional optical component from a base body , comprising:providing the base body and loading the base body on a substrate into a printer in a providing step,depositing droplets of printing ink on a f surface of the base body in a first printing step in order to build up an intermediate first pre-structure,depositing droplets of printing ink on a second surface of the base body in a second printing step in order to build up an intermediate second pre-structure,rotating the first pre-structure and arranging the first pre-structure on a support structure in a rearrangement step between the first printing step and the second printing step,wherein the support structure comprises a carrier substructure and an extension of the base body rests at least partially on the carrier substructure.2. The method according to claim 1 , wherein the support structure comprise deformation-control substructure.3. The method according to claim 1 , wherein the base body comprises a flat disk.4. The method according to claim 1 , wherein the substrate is a ...

Подробнее
Номер записи: 62
10-01-2019 дата публикации

CONTACT LENS WITH SURFACE MODIFICATION AND THE METHOD FOR ITS PREPARATION

Номер: US20190009482A1
Автор: Lai Yu-Chin, LIAO Ya-Hsuan, LIN Ming-Nan, YEH Min-Tzung
Принадлежит:

A surface-modified contact lens, having a surface contact angle hysteresis of less than 15°, includes a lens body and a first surface modification layer disposed on a surface of the lens body. The first surface modification layer comprises a first reactive hydrophilic polymer. The surface of the lens body has a first functional group or a second functional group, and the first reactive hydrophilic polymer has a third functional group or a fourth functional group. A first covalent cross-link bond is formed between the surface of the lens body and the first surface modification layer. The first covalent cross-link bond is formed by reacting the first functional group or the second functional group of the surface of the lens body with the third functional group or the fourth functional group of the first reactive hydrophilic polymer. 1. A surface-modified contact lens having a surface contact angle hysteresis of less than 15° , comprising:a lens body; anda first surface modification layer disposed on a surface of the lens body, the first surface modification layer comprising a first reactive hydrophilic polymer,wherein the surface of the lens body has a first functional group or a second functional group, and the first reactive hydrophilic polymer has a third functional group or a fourth functional group;wherein a first covalent cross-link bond is formed between the surface of the lens body and the first surface modification layer, the first covalent cross-link bond being formed by reacting the first functional group or the second functional group of the surface of the lens body with the third functional group or the fourth functional group of the first reactive hydrophilic polymer;wherein the first functional group and the third functional group are selected from the group consisting of a vinyl group and an epoxy group;wherein the second functional group and the fourth functional group are selected from the group consisting of an amino group, a ammonium salt, a ...

Подробнее
Номер записи: 63
09-01-2020 дата публикации

METHODS OF FORMING CONTACT LENSES TO CONTAIN BIOACTIVE AGENTS

Номер: US20200009811A1
Автор: Chen Charlie, Yang Tahua
Принадлежит:

A method of forming and/or using a contact lens is disclosed. In one step, bioactive agents are pad printed to form a layer. In another step, the layer is cured to form a portion of the contact lens. The contact lens is shipped to users in dry state without immersing in aqueous packaging solution. 1. A method of forming and/or using a contact lens comprising:pad printing bioactive agents to form a layer; andcuring the layer to form a portion of the contact lens.2. The method of wherein the pad printing the bioactive agents to form the layer comprises pad printing the bioactive agents on a pre-manufactured contact lens claim 1 , and the curing the layer to form the portion of the contact lens comprises curing the layer on the pre-manufactured contact lens to form the portion of the contact lens.3. The method of wherein the pad printing the bioactive agents to form the layer comprises pad printing the bioactive agents to form the layer during manufacture of the contact lens.4. The method of further comprising claim 1 , after the pad printing and curing claim 1 , shipping the contact lens in a dry state.5. The method of further comprising forming the contact lens so that the layer of the pad printed bioactive agents is disposed within an interior of the contact lens between exterior layers.6. The method of wherein the pad printing the bioactive agents to form the layer comprises pad printing the bioactive agents outside of a center portion claim 1 , comprising an intended line of vision claim 1 , of the contact lens.7. The method of further comprising pad printing the layer directly onto a second layer.8. The method of further comprising pad printing the layer directly onto the second layer which is disposed on a portion of a mold.9. The method of further comprising pad printing the second layer on the portion of the mold.10. The method of further comprising filling the portion of the mold with a monomer mix.11. The method of further comprising surface treating the ...

Подробнее
Номер записи: 64
11-01-2018 дата публикации

SILICONE HYDROGELS COMPRISING N-ALKYL METHACRYLAMIDES AND CONTACT LENSES MADE THEREOF

Номер: US20180011223A1
Автор: Alli Azaam, Sinha Dola
Принадлежит:

The present invention relates to silicone hydrogels exhibiting desired combinations of physical and mechanical properties, formed from a reactive monomer mixture comprising at least one N-alkyl methacrylamide, and at least one silicone-containing component. These silicone hydrogels may also contain hydrophilic components, crosslinking agents and toughening monomers. These silicone hydrogels are useful in preparing biomedical devices, ophthalmic lenses, and contact lenses. 1. A silicone hydrogel having a modulus of at least about 1000 psi and a water content of at least about 10% , formed from a reactive mixture comprising at least one N-alkyl methacrylamide and at least one silicone-containing component.2. A non-ionic silicone hydrogel having a modulus of about 140 to about 2000 psi and a water content of about 20 to about 50% , formed from a reactive mixture comprising at least one N-alkyl methacrylamide and at least one silicone containing component.3. The silicone hydrogel of or further comprising a water content of about 20 to about 40%.4. The silicone hydrogel of or further comprising at least one photoinitiator.5. The silicone hydrogel of wherein said silicone hydrogel is cured via exposure to light claim 4 , or visible light.6. The silicone hydrogel of or wherein said silicone containing component comprises at least one silicone chain having 3-30 claim 4 , 3-25 claim 4 , 3-20 or 3-15 siloxane repeating units.7. The silicone hydrogel of wherein said at least one silicone chain is a polydialkyl siloxane chain.8. The silicone hydrogel of wherein said at least one silicone chain is a polydimethyl siloxane chain.9. The silicone hydrogel of wherein said at least one silicone chain is a polydiaryl siloxane chain.10. The silicone hydrogel of or wherein said reactive mixture comprises about 20 to about 60 wt % or about 30 about 50 wt % of said silicone containing component claim 6 , based upon all reactive components.11. The silicone hydrogel of or wherein said ...

Подробнее
Номер записи: 65
11-01-2018 дата публикации

Direct Surfacing Optimized Lens Blank

Номер: US20180011343A1
Автор: Olund David, Orozco Rodriguez José A.
Принадлежит: Vision Ease, LP

A semi-finished ophthalmic lens for formation of a plurality of different finished ophthalmic lenses requiring reduced amounts of lens material to be removed for formation of the finished ophthalmic lenses and reduced rates of departure of a surfacing tool and methods of making the same. 1. A semi-finished ophthalmic lens comprising:a first optical surface having a first curve; anda second optical surface having a second curve that approximates second optical surfaces of a plurality of finished ophthalmic lenses at coordinates at which lenses of the plurality of finished ophthalmic lenses have maximum thicknesses;the lenses of the plurality of finished ophthalmic lenses comprising first optical surfaces having the first curve;the lenses of the plurality of finished ophthalmic lenses comprising optical powers that are different from one another.2. The semi-finished ophthalmic lens of further comprising a polycarbonate.3. The semi-finished ophthalmic lens of further comprising a thiourethane.4. The semi-finished ophthalmic lens of wherein the first optical surface comprises a variable radius curve.5. The semi-finished ophthalmic lens of wherein the first optical surface comprises a single base curve.6. The semi-finished ophthalmic lens of wherein the first optical surface forms a front surface of the semi-finished ophthalmic lens.7. The semi-finished ophthalmic lens of wherein the coordinates at which lenses of the plurality of finished ophthalmic lenses have maximum thicknesses are coordinates near edges of the lenses of the plurality of finished ophthalmic lenses.8. The semi-finished ophthalmic lens of wherein the coordinates at which lenses of the plurality of finished ophthalmic lenses have maximum thicknesses are coordinates near centers of the lenses of the plurality of finished ophthalmic lenses.9. The semi-finished ophthalmic lens of further comprising an edge defining an edge shape that approximates edge shapes of lenses of a plurality of finished edged ...

Подробнее
Номер записи: 66
14-01-2021 дата публикации

PRIMER FOR TAC FILM AND LAMINATE

Номер: US20210011196A1
Автор: Berzon Ronald A.
Принадлежит:

Embodiments of the disclosure relate to primer compositions for increasing the adhesion between a polarizing film laminate to a cast-polymerized lens. The chemisorptive primers may react with cast-polymerized lens monomers and/or interact with the polarizing film laminate to provide exceptionally strong adhesion between the film laminate and the ophthalmic lens. 114.-. (canceled)15. An optical article comprising:an ophthalmic lens comprising at least one polymerized monomer;a functional laminate comprising a thermoplastic film on each of a forward-facing surface and a rear-facing lens-contacting surface;a primer coating deposited on the lens-contacting surface of the functional laminate; at least one reactive oligomer or high molecular weight polymer with a Mw between about 2,000 and about 100,000 in an amount ranging from 1 wt. % to 25 wt. %;', 'at least one UV or thermal initiator; and', 'at least one monomer capable of reacting with the lens polymerized monomer, wherein the monomer is present in an amount ranging from 0.25 wt. % to 15 wt. %, wherein the primer coating monomer is the same as the lens polymerized monomer or is different from the lens polymerized monomer and is, in that case, selected to include the same reactive functional group as the lens monomer., 'wherein on the functional laminate, said primer coating comprises16. The optical article of claim 15 , wherein the primer coating comprises a solvent in an amount ranging from 60 wt. % to 98.75 wt. %.17. The optical article of claim 15 , wherein the at least one reactive oligomer or high molecular weight polymer has a reactive functionality of 1 or more.18. The optical article of claim 17 , wherein the at least one reactive oligomer or high molecular weight polymer has a reactive functionality of 2.19. The optical article of claim 15 , wherein the at least one reactive oligomer or high molecular weight polymer is a urethane dimethacrylate.20. The optical article of claim 15 , wherein the at least one ...

Подробнее
Номер записи: 67
10-01-2019 дата публикации

OPTICAL ELEMENTS WITH TOROIDAL ENGAGEMENT INTERFACES AND METHOD FOR ASSEMBLING SUCH ELEMENTS

Номер: US20190011609A1
Автор: LAMONTAGNE Frédéric
Принадлежит:

Optical assemblies include optical elements aligned through the engagement of toroidal protrusions and toroidal grooves. A plurality of optical elements each having an inner portion having and a surrounding outer portion form a stack. Pairs of contiguous optical elements along the stack engage each other at an engagement interface including a toroidal protrusion on the outer portion of one optical element and a toroidal groove on the outer portion of the other optical element. The toroidal protrusions and groove have a symmetry of revolution about an optical axis of the inner portion of the corresponding optical element, with toroidal protrusions and toroidal grooves engaging each other having a same radius of revolution. Similar toroidal engagement of an optical element is with an annular support. 1. An optical assembly , comprising: a toroidal protrusion extending along the outer portion of one of the contiguous optical elements of said pair, the toroidal protrusion having a symmetry of revolution about the optical axis of the inner portion of the corresponding optical element; and', 'a toroidal groove extending in the outer portion of the other one of the contiguous optical elements of said pair, the toroidal groove having a symmetry of revolution about the optical axis of the inner portion of the corresponding optical element;, 'a plurality of optical elements, each optical element comprising an inner portion having an optical axis and an outer portion surrounding the inner portion, said optical elements forming a stack, the optical axes of the inner portions of said optical elements being aligned along said stack, at least one pair of contiguous optical elements along said stack engaging each other at an engagement interface, the engagement interface comprisingwherein the toroidal protrusion and the toroidal groove have a same radius of revolution and engage each other.2. The optical assembly according to claim 1 , wherein each optical element is one of a lens ...

Подробнее
Номер записи: 68
14-01-2021 дата публикации

EYEGLASS LENS AND METHOD OF MAKING SAME

Номер: US20210011308A1
Автор: FRINGS David, LUDERICH Joerg, POEPPERL Christian
Принадлежит:

A spectacle lens () which has, on its outer edge (A) and/or on its front or rear surface (B), at least one functional layer (A), the at least one functional layer (A, ) being formed by a substance that is applied in liquid form to the edge (A) and/or the front or rear surface (B) of the spectacle lens (), is integrally bonded to the glass and is chemically cured or radiation-cured, and said at least one functional layer (A, ) having an optical function, magnetic function or electrical or electronic function. Also a method for producing a spectacle lens, in particular machined from a lens blank, wherein a material is applied in liquid form to the edge (A) and/or the front or rear surface (B) of the edged spectacle lens () and is chemically cured or radiation-cured, said material forming at least one functional layer (A, ) on the glass, which functional layer having an optical function, magnetic function or electrical or electronic function. 1. An eyeglass lens having an outer edge , a front surface , and a or rear surface and provided witha functional layer formed by a substance and applied to the edge, front, or rear surface of the eyeglass lens in liquid form and integrally bonded with the lens and cured chemically or by radiation, the functional layer having an optical, magnetic, electric, or electronic function.2. The eyeglass lens according to claim 1 , wherein the functional layer performs an optical function bya) forming a mechanical polish of the edge in that a roughness of the functional layer is smaller than a roughness of the edge on which the functional layer is applied, orb) forming a waveguide on or along part of the edge circumferentially of the lens orc) forming a thermochromic or electrochromic layer on or along part of the front or back eyeglass lens surface, ord) forming a light-emitting element.3. The eyeglass lens according to claim 1 , wherein the functional layer performs a magnetic function with a magnetic field generated by the functional ...

Подробнее
Номер записи: 69
03-02-2022 дата публикации

CONTACT LENSES WITH SOFTER LENS SURFACES

Номер: US20220032564A1
Автор: Chiang Chung-Yuan, Dauenhauer Ciara, Oyler Paul William, Pruitt John Dallas, Qiu Yongxing, Tucker Robert Carey
Принадлежит:

The invention is related to a coated contact lens, especially a coated silicone hydrogel contact lens, which comprises an anterior surface, an opposite posterior surface, and a layered structural configuration from the anterior surface to the posterior surface. The layered structural configuration comprises an outer anterior surface hydrogel layer, an inner layer, and an outer posterior surface hydrogel layer. The inner layer is a lens bulk material. The coated contact lens has a superior lens surface softness and a good lens surface hydrophilicity while optionally having a desirably-lower polyquaternium-1 uptake. 1. A method for making coated contact lenses , comprising the steps of:(1) obtaining a contact lens precursor which has a concave surface and an opposite convex surface and comprises a lens bulk material and first reactive functional groups on and/or near the anterior and posterior surfaces, wherein the first reactive functional groups are selected from the group consisting of carboxyl groups, amino groups, azetidinium groups, epoxide groups, aziridine groups, vinylsulfone groups, thiol groups, and combinations thereof;(2) immersing the contact lens precursor in an aqueous solution in a container, wherein the aqueous solution has a room temperature and comprises (a) at least one hydrophilic polymeric material and (b) a pH-buffering system for maintaining pH of the aqueous solution, wherein the pH-buffering system comprises at least two buffering agents, wherein the total concentration of all buffering agents present in the aqueous solution is from about 10 mM to 100 mM, wherein the aqueous solution has a room temperature and a pH of from about 6.8 to about 7.5, wherein the totally concentration of all ions present in the aqueous solution is less than 241 mM, provided that the total concentration of all ions each having two or more charges in the aqueous solution is less than 80 mM, wherein said at least one hydrophilic polymeric material comprises second ...

Подробнее
Номер записи: 70
19-01-2017 дата публикации

Encapsulated Electronics

Номер: US20170014074A1
Автор: Babak Amirparviz, James ETZKORN
Принадлежит: Verily Life Sciences LLC

An eye-mountable device includes an electrochemical sensor embedded in a polymeric material configured for mounting to a surface of an eye. The electrochemical sensor includes a working electrode and a reference electrode that reacts with an analyte to generate a sensor measurement related to a concentration of the analyte in a fluid to which the eye-mountable device is exposed. An example assembly process includes: forming a sacrificial layer on a working substrate; forming a first layer of a bio-compatible material on the sacrificial layer; providing an electronics module on the first layer of the bio-compatible material, forming a second layer of the bio-compatible material to cover the electronics module; and annealing the first and second layers of the bio-compatible material together to form an encapsulated structure having the electronics module fully encapsulated by the bio-compatible material.

Подробнее
Номер записи: 71
17-01-2019 дата публикации

CONTACT LENS FOR DETECTING GLUCOSE LEVEL IN TEARS AND METHOD FOR MAKING THE SAME

Номер: US20190015022A1
Автор: CHIEN HSIU-WEN
Принадлежит:

A contact lens for detecting body glucose in tears includes a gel substrate, a plurality of platinum nanoparticles dispersed in the gel substrate, and a biosensor received in the gel substrate. The biosensor receives the glucose from tears as glucose oxidase and the glucose acid and hydrogen peroxide (HO) produced are decomposed to water and hydrogen peroxide. The platinum nanoparticles function as a catalytic agent to accelerate the degradation of the hydrogen peroxide into water and oxygen, avoiding or reducing hypoxia of the eye. 1. A method for making a contact lens for detecting glucose level in tears comprising:providing a mold comprising a male mold portion and a female mold portion, the female mold portion defining a groove;placing a biosensor in the groove, the biosensor comprising glucose oxidase;adding a gel precursor in the groove containing the biosensor, the gel precursor comprising hydrophilic monomers, a cross-linking agent, a photo-initiator, and a plurality of platinum nanoparticles; andcovering the male mold portion with the female mold portion; andexposing the covered mold to ultraviolet radiation.2. The method of claim 1 , further comprising claim 1 , causing the gel precursor to polymerize to form a gel substrate claim 1 , dispersing the platinum nanoparticles in the gel substrate claim 1 , and receiving the biosensor in the gel substrate claim 1 , thereby forming the contact lens.3. The method of claim 1 , wherein each of the plurality of platinum nanoparticles has a diameter of about 5 nm to about 200 nm.4. The method of claim 1 , wherein the hydrophilic monomers have a mass percentage of about 68.4% to about 99.2% of a total mass of the gel precursor claim 1 , the cross-linking agent has a mass percentage of about 0.03% to about 14.2% of the total mass of the gel precursor claim 1 , the photo-initiator has a mass percentage of about 0.12% to about 18.6% of the total mass of the gel precursor claim 1 , and the plurality of platinum ...

Подробнее
Номер записи: 72
19-01-2017 дата публикации

POLYMERIZABLE COMPOSITION FOR OPTICAL MATERIAL AND OPTICAL MATERIAL

Номер: US20170015776A1
Автор: Goto Kenichi, KAWAGUCHI Masaru, NAKAGAWA Toshihiko, TSUKADA Hidetaka, Yamasaki Satoshi
Принадлежит: Mitsui Chemicals, Inc.

A polymerizable composition for an optical material of the present invention includes polyisocyanate (a) including aliphatic polyisocyanate (a1) and a modified aliphatic polyisocyanate (a2), an episulfide (b), and a polythiol (c). 1. A polymerizable composition for an optical material including:polyisocyanate (a) including aliphatic polyisocyanate (a1) and a modified aliphatic polyisocyanate (a2);an episulfide (b); anda polythiol (c).2. The polymerizable composition for an optical material according to claim 1 ,wherein the modified aliphatic polyisocyanate (a2) is an isocyanurate of the aliphatic polyisocyanate.3. The polymerizable composition for an optical material according to claim 1 ,wherein the aliphatic polyisocyanate (a1) and/or the aliphatic polyisocyanate in the modified aliphatic polyisocyanate (a2) are obtained from plant-derived materials.5. The polymerizable composition for an optical material according to claim 1 ,wherein the episulfide (b) includes an episulfide obtained from plant-derived materials.6. The polymerizable composition for an optical material according to claim 1 ,wherein the aliphatic polyisocyanate (a1) and/or the aliphatic polyisocyanate in the modified aliphatic polyisocyanate (a2) is at least one selected from 1,5-pentamethylene diisocyanate, 1,6-hexamethylene diisocyanate, 1,7-heptamethylene diisocyanate, lysine diisocyanate, lysine triisocyanate, dimer acid diisocyanate, octamethylene diisocyanate, and decamethylene diisocyanate.7. The polymerizable composition for an optical material according to claim 1 ,wherein the polythiol (c) is at least one selected from 4-mercaptomethyl-1,8-dimercapto-3,6-dithiaoctane, 4,8 or 4,7 or 5,7-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane, pentaerythritol tetrakis mercaptoacetate, pentaerythritol tetrakis mercaptopropionate, 2,5-bis(mercaptomethyl)-1,4-dithiane, bis(mercaptoethyl)sulfide, 1,1,3,3-tetrakis(mercaptomethylthio)propane, 4,6-bis(mercaptomethylthio)-1,3-dithiane, 2-(2,2-bis( ...

Подробнее
Номер записи: 73
18-01-2018 дата публикации

Mold for contact lens with non-rotationally symmetric rim or edge

Номер: US20180015678A1
Автор: Matias Heinrich, Philippe Jubin, Radhakrishnan Damodharan
Принадлежит: Johnson and Johnson Vision Care Inc

A mold for a front curve of an ophthalmic lens includes an inner region having a non-rotationally symmetric shape, an outer region having a rotationally symmetric shape, and a continuous middle region between the inner region and the outer region. A first portion of the middle region is in contact with the inner region, defining a non-rotationally symmetric rim or edge of a front surface of the ophthalmic lens. A second portion of the middle region is in contact with the outer region and is rotationally symmetrical.

Подробнее
Номер записи: 74
17-01-2019 дата публикации

Device and production method for the same

Номер: US20190015542A1
Автор: Masataka Nakamura, Rumiko Kitagawa
Принадлежит: TORAY INDUSTRIES INC

Disclosed is a device including a substrate and a gel layer made of a hydrophilic polymer having a hydroxyl group. The gel layer is fixed to at least a part on a surface of the substrate in a thickness of 1 nm to 3,000 nm and an elastic modulus of a device surface is 6.00×10 3 Pa or less.

Подробнее
Номер записи: 75
03-02-2022 дата публикации

Monomer composition for contact lenses, polymer for contact lenses, contact lens, and method of producing the contact lens

Номер: US20220035076A1
Автор: Eiji Harata, Koh KOBAYASHI, Norio Iwakiri, Ryuya GOTANDA, Shu TAKASHIMA, Yosuke Matsuoka
Принадлежит: NOF Corp

Provided is a contact lens that can exhibit excellent breaking elongation and surface hydrophilicity even when produced using a hydrophobic mold made of polypropylene or the like without performing a surface hydrophilic treatment. Further provided are a monomer composition and a polymer that can be suitably used for obtaining the contact lens. This monomer composition contains (A) a siloxanyl group-containing itaconic acid diester monomer, (B) an amide group-containing monomer, (C) a hydroxy group-containing monomer, (D) a siloxanyl group-containing (meth)acrylate, and (E) a cross-linking agent in a specific ratio.

Подробнее
Номер записи: 76
03-02-2022 дата публикации

INCREASED STIFFNESS CENTER OPTIC IN SOFT CONTACT LENSES FOR ASTIGMATISM CORRECTION

Номер: US20220035178A1
Автор: Alli Azaam, Sinha Dola
Принадлежит:

A molded contact lens comprising a stiffer optic zone relative to the peripheral zone of the contact lens provides an optical element for correcting astigmatism without the need for or substantially minimizing the need for the correction of rotational misalignment. The higher elastic modulus optic zone vaults over the cornea thereby allowing a tear lens to form. The tear lens follows or assumes the shape of the back surface of the contact lens. The combination of the tear lens and the optical zone provide an optical element for correction of refractive error. 1. (canceled)2. The contact lens of or wherein said first material further comprising a water content of about 20 to about 40%.3. The contact lens of or wherein said first reactive mixture further comprises at least one photoinitiator.4. The contact lens of or wherein the first and second materials are cured via exposure to light.59-. (canceled)10. The contact lens of or wherein said first reactive mixture comprises about 5 wt % to about 50 wt % of at least one N-alkyl methacrylamide , based upon all reactive components.13. The contact lens of wherein said N-alkyl methacrylamide is N-methyl methacrylamide.14. The contact lens of or wherein said first reactive mixture comprises about 5 to about 15 wt % at least one crosslinking component.15. The contact lens of wherein the modulus of the second material is about 1000 to about 100 claim 14 ,000 psi.1617-. (canceled)18. The contact lens of wherein said first reactive mixture further comprises about 5 wt % to about 40 wt % of at least one hydroxyl functional silicone containing component.19. The contact lens of wherein said hydroxyl functional silicone containing component is a hydroxyl functional polysiloxane selected from the group consisting of polydialkyl siloxanes and polydiaryl siloxanes.20. The contact lens of wherein said first reactive mixture comprise about 10 to about 40 wt % hydroxyl functional polysiloxane.21. The contact lens of wherein said hydroxyl ...

Подробнее
Номер записи: 77
21-01-2021 дата публикации

METHOD OF MAKING SILICONE CONTAINING CONTACT LENS WITH REDUCED AMOUNT OF DILUENTS

Номер: US20210016527A1
Автор: Alli Azaam, Mahadevan Shivkumar
Принадлежит:

The present invention relates to a method of manufacturing a contact lens including the steps of: (i) adding reactive components to a mold, wherein the reactive components comprise (a) at least one hydroxy-containing silicone component having a weight average molecular weight from about 200 to about 15,000 g/mole and (b) at least one mono-ether terminated, mono-methacrylate terminated polyethylene glycol having a weight average molecular weight from about 200 to about 10,000 g/mole; (ii) curing the reactive components within the mold to form the contact lens; and (iii) removing the contact lens from said mold. 1. A contact lens that is a reaction product of a reactive mixture comprising (a) at least one hydroxy-containing silicone component having a weight average molecular weight from about 200 to about 15 ,000 g/mole (b) at least one monofunctional polyethylene glycol having a weight average molecular weight from about 200 to about 10 ,000 g/mole and (c) a photochromic compound; and less than about 15 wt % diluents.2. The contact lens of claim 1 , wherein said at least one mono-methacrylate terminated polyethylene glycol is a mono-ether terminated claim 1 , mono-methacrylate terminated polyethylene glycol.3. The contact lens of claim 2 , wherein said at least one at least one mono-methacrylate terminated polyethylene glycol is mPEG 475.4. The contact lens of claim 1 , wherein said reactive mixture comprises less than five percent claim 1 , by weight claim 1 , of one or more diluents.5. The contact lens of claim 3 , wherein said reactive mixture comprises less than five percent claim 3 , by weight claim 3 , of one or more diluents.6. The contact lens of comprising a polymer having a Tg (heating) of between about 115 and about 125° C.7. The contact lens of claim 1 , wherein said reactive mixture comprises from about 10 to about 20 weight % of at least one hydoxyalkyl containing monomer.8. The contact lens of claim 5 , wherein said reactive mixture comprises less ...

Подробнее
Номер записи: 78
18-01-2018 дата публикации

EYEGLASSES

Номер: US20180017809A1
Автор: HE Zhao-Yun
Принадлежит:

Eyeglasses include two lenses and a frame unit. Each lens is integrally formed as one piece by injection molding, and includes a lens body, and a nose side protrusion and an ear side protrusion extending oppositely and respectively from two opposite lateral ends of the lens body. The frame unit includes a bridge and two end pieces. The bridge has a bridge body, and two nose side fixing portions respectively formed on two opposite ends of the bridge body and respectively connected to the nose side protrusions of the lenses. Each end piece has a lens connecting end connected to the ear side protrusion of a respective lens. 1. Eyeglasses comprising:at least one lens integrally formed as one piece by injection molding, and including a lens body, and at least one protrusion protruding outwardly from a lateral end of said lens body; anda frame unit connected to said at least one lens and having at least one fixing portion fixedly connected to said at least one protrusion.2. Eyeglasses comprising:two lenses, each of which is integrally formed as one piece by injection molding and each of which includes a lens body, and a nose side protrusion and an ear side protrusion extending oppositely and respectively from two opposite lateral ends of said lens body; anda frame unit including a bridge and two end pieces, said bridge having a bridge body, and two nose side fixing portions respectively formed on two opposite ends of said bridge body and respectively connected to said nose side protrusions of said lenses, each of said end pieces having a lens connecting end connected to said ear side protrusion of a respective one of said lenses.3. The eyeglasses as claimed in claim 2 , wherein each of said nose side fixing portions of said bridge defines a first groove receiving said nose side protrusion of the respective one of said lenses claim 2 , said lens connecting end of each of said end pieces being formed with an ear side fixing portion that defines a second groove receiving ...

Подробнее
Номер записи: 79
21-01-2021 дата публикации

METHOD FOR PRODUCING ORGANIC MERCAPTO COMPOUND OR INTERMEDIATE THEREOF, (POLY)THIOL COMPONENT, POLYMERIZABLE COMPOSITION FOR OPTICAL MATERIAL, MOLDED PRODUCT, OPTICAL MATERIAL, AND LENS

Номер: US20210017128A1
Автор: Kuboi Hironori, OHSHIMIZU Kaoru
Принадлежит: Mitsui Chemicals, Inc.

A method for producing an organic mercapto compound or an intermediate thereof according to the present invention has a reaction step of reacting an alcohol compound including a sulfur atom with a thioamide compound having a structure in which an organic group is bonded to at least one bonding hand of a thioamide group, under acidic conditions. 1. A method for producing an organic mercapto compound or an intermediate thereof , comprising:a reaction step of reacting an alcohol compound including a sulfur atom with a thioamide compound having a structure in which an organic group is bonded to at least one bonding hand of a thioamide group, under acidic conditions.2. The method for producing an organic mercapto compound or an intermediate thereof according to claim 1 ,{'sup': '2', 'wherein a topological polar surface area of the thioamide compound is 10.00 to 51.00 Å.'}4. The method for producing an organic mercapto compound or an intermediate thereof according to claim 3 ,{'sup': '1', 'wherein, in the compound represented by General Formula (2), Ris a monovalent aryl group having 6 to 10 carbon atoms, which optionally be substituted, a monovalent aliphatic group having 1 to 10 carbon atoms, which optionally be substituted, or a monovalent heteroaryl group having 3 to 10 carbon atoms, which optionally be substituted, and substituents of these groups optionally include a hetero atom, and'}{'sup': 2', '3', '2', '3, 'Rand Rare hydrogen atoms or Rand Rare bonded to each other to form a nitrogen-containing heterocyclic ring having 3 to 10 carbon atoms.'}5. The method for producing an organic mercapto compound or an intermediate thereof according to claim 1 , {'br': None, 'sup': '1', 'sub': 'n', 'Q\ue8a0OH\u2003\u2003(1)'}, 'wherein the alcohol compound is represented by General Formula (1),'}{'sup': '1', 'wherein in Formula (1), Qis an n-valent organic group including a sulfur atom and having 1 to 30 carbon atoms, and n is an integer of 1 to 10.'}7. The method for producing ...

Подробнее
Номер записи: 80
16-01-2020 дата публикации

SILICONE HYDROGEL LENSES WITH WATER-RICH SURFACES

Номер: US20200017713A1
Автор: Nelson Jared, Pruitt John Dallas, Qiu Yongxing, Thekveli Sibichen J., Tucker Robert Carey
Принадлежит:

The invention is related to a hydrated silicone hydrogel contact lens having a layered structural configuration: a lower water content silicone hydrogel core (or bulk material) completely covered with a layer of a higher water content hydrogel totally or substantially free of silicone. A hydrated silicone hydrogel contact lens of the invention possesses high oxygen permeability for maintaining the corneal health and a soft, water-rich, lubricious surface for wearing comfort. 164-. (canceled)65. A silicone hydrogel contact lens , comprising:a silicone hydrogel bulk material covered with an outer surface hydrogel layer,{'sub': 'SiHy', 'wherein the silicone hydrogel bulk material comprises (i) repeating units derived from a silicone-containing vinylic monomer, a silicone-containing vinylic macromer, a silicone-containing prepolymer or combinations thereof and (ii) repeating units derived from a hydrophilic vinylic monomer, and has a first water content (designated as WC) of from about 10% to about 70% by weight,'}wherein the outer surface hydrogel layer comprises a crosslinked polymeric material which comprises poly(ethylene glycol) chains which are designated as PEG chains, andwherein the silicone hydrogel contact lens has a silicon atomic percentage of about 5% or less of total elemental percentage as measured by XPS analysis of the silicone hydrogel contact lens in dried state,wherein the silicone hydrogel contact lens, when being fully hydrated, has: an oxygen transmissibility of at least about 40 barrers/mm; an elastic modulus (or Young's Modulus) of from about 0.3 MPa to about 1.8 MPa; and an averaged water contact angle of about 80 degrees or less.66. The silicone hydrogel contact lens of claim 65 , wherein the PEG chains are derived from at least one member selected from the group consisting of: PEG-N H; HN-PEG-NH; HN-PEG-COOH; a multi-arm PEG with one or more amino groups; a PEG dendrimer with one or more amino groups; and combinations thereof.67. The silicone ...

Подробнее
Номер записи: 81
21-01-2021 дата публикации

PUPIL-ONLY PHOTOCHROMIC CONTACT LENSES DISPLAYING DESIRABLE OPTICS AND COMFORT

Номер: US20210018765A1
Автор: Duis Donnie J., Grammer Holly L., LI YONGCHENG, Sonoda Leilani K.
Принадлежит:

A method for making a hydrogel, photochromic contact lens including supplying a first lens composition comprising a contact lens monomer and a photochromic material to a front contact lens mold and supplying a second lens composition to said contact lens mold wherein the viscosity of said first composition is at least about 1000 cp greater than the viscosity of said second contact lens composition, and the makeup of said second composition matches the of said first composition to reduce strain between said compositions of the resulting lens. 1. A method for making a photochromic , hydrogel contact lens comprising:dosing a first hydrogel lens composition to a front contact lens mold part; wherein the first hydrogel lens composition comprises at least one contact lens monomer and a photochromic material;dosing a second hydrogel lens composition to said contact lens mold part on the top of the first composition wherein the first composition has a viscosity greater than the viscosity of said second contact lens composition;positioning a second mold part proximate to the first mold part thereby forming a lens cavity with the first lens composition and the second composition within the lens cavity, and curing said first and second compositions to form said hydrogel contact lens having an actual sagittal depth within about 100 microns of a design sagittal depth,wherein the curing is by photopolymerization such that radiation is directed to both the front curve mold half and the base curve mold half.2. The method of wherein the said second contact lens composition is dosed as a ring around the first composition.3. The method of wherein the base curve mold is deposited on to the front curve mold at substantially the time when the first and second lens compositions merge together.4. The method of wherein said first composition comprises a first contact lens monomer claim 1 , a photochromic material and a first balancing monomer; and said second lens composition comprises a ...

Подробнее
Номер записи: 82
22-01-2015 дата публикации

LENSES FOR COSINE CUBED, TYPICAL BATWING, FLAT BATWING DISTRIBUTIONS

Номер: US20150023028A1
Автор: Allen Gary, CHINNIAH JEYACHANDRABOSE, YODER Benjamin
Принадлежит:

A lighting apparatus with uniform illumination distribution, according to various embodiments, can include a lens for area lighting. In one embodiment, the lens comprises a plurality of cross-sections identified by a thickness ratio defined at different angles. The thickness ratio is determined relative to the thickness of the cross-section defined at a center angle of the lens. In another embodiment, the lighting apparatus with uniform illumination distribution includes a lens having an inner surface and an outer surface. A profile of the inner surface and the outer surface is composed of a plurality of piecewise circular arcs defined with radii and circle centers. The lens is formed as a complex curve lens by joining the piecewise circular arcs of the inner surface and the outer surface. 1. A lighting apparatus with substantially uniform illumination distribution , comprising:a lens formed of a series of inter-connected cross-sections, each being representative of a unique thickness ratio;wherein (i) one of the cross-sections has a minimum thickness of x units at a first angle along an optical axis and (ii) another one of the cross-sections has a maximum thickness ratio with respect to the minimum thickness, at a second angle along the axis;wherein the thickness ratios of all of the other cross-sections is a function of the minimum thickness, each of the other thickness ratios corresponding to a different angle; andwherein each of the thickness ratios can vary within a range of about +/−10-15%.2. The lighting apparatus of claim 1 , wherein the maximum ratio is about 1.6;wherein the first angle is about 90° and the second angle is about 0°;wherein additional cross-sections have thickness ratios of about 1.04, 1.1, 1.2, and 1.3 with respect to the minimum thickness, respectively;wherein a first of the additional cross-sections is adjacent to the one cross-section, each of the additional cross-sections being adjacent to another of the additional cross-sections; ...

Подробнее
Номер записи: 83
26-01-2017 дата публикации

OPTICAL PART, METHOD OF MANUFACTURING THE OPTICAL PART, AND CAMERA

Номер: US20170023762A1
Автор: Tobita Shusuke
Принадлежит:

An optical part includes a lens and a holder having the lens fixed thereto. The holder is a cylindrical member including a front surface, a back surface, an outer peripheral surface, and an inner peripheral surface. The back surface contacts the lens, and part of the inner peripheral surface penetrates the lens. 1. An optical part comprising:a lens; anda holder having the lens fixed thereto,wherein the holder is a cylindrical member including a front surface, a back surface, an outer peripheral surface, and an inner peripheral surface, andwherein the back surface contacts the lens, and part of the inner peripheral surface penetrates the lens.2. The optical part according to claim 1 ,wherein the lens is an eyepiece, and includes an eyepiece-side lens surface, an objective-side lens surface, and a side surface, andwherein the eyepiece-side lens surface and the inner peripheral surface contact each other.3. The optical part according to claim 2 ,wherein the back surface intercepts light that is incident from the objective-side lens surface and that is reflected by the side surface.4. The optical part according to claim 1 ,wherein the inner peripheral surface penetrates the lens by an amount that is greater than or equal to 0.038 mm towards an inner side of the lens from an intersection line of the inner peripheral surface and a lens surface.5. The optical part according to claim 1 ,wherein the holder is made of polycarbonate, and the polycarbonate contains a glass filler in a range of 10 wt % to 20 wt % of the entire weight of the holder.6. The optical part according to claim 1 ,{'b': '10', 'wherein an angle formed by an optical axis of the lens and a straight line connecting an intersection point, where an intersection line of the back surface and a parallel plane that includes the optical axis of the lens and that is parallel to the optical axis of the lens intersects an intersection line of the parallel plane and the inner peripheral surface, and a point that is ...

Подробнее
Номер записи: 84
10-02-2022 дата публикации

Optical lens and method for manufacturing same

Номер: US20220043183A1
Автор: Atsushi MOTEGI, Katsushi NISHIMORI, Kensuke Oshima, Kentaro Ishihara, Masahiro Kanda, Mitsutake SUEMATSU, Mitsuteru Kondo, Noriyuki Kato, Shinya Ikeda, Shoko Suzuki, Tatsunobu OGATA
Принадлежит: Mitsubishi Gas Chemical Co Inc

Provided is an optical lens formed by integrally molding a lens part that is an optically effective portion and has a light incidence/emission surface, and a lens edge part that is an optically ineffective portion and has a surface thereof except the light incidence/emission surface. The lens edge part includes a non-transparent region in part or all thereof, the lens part and the lens edge part include a thermoplastic resin, and the non-transparent region in the lens edge part contains a total of 0.1-5 mass % of one or more of a black dye and a black pigment.

Подробнее
Номер записи: 85
28-01-2021 дата публикации

METHODS FOR PRODUCING HELMET INSERTS WITH MATERIALS HAVING MULTIPLE MECHANISMS OF HARDENING

Номер: US20210024775A1
Автор: Chen Kai, Desimone Joseph M., Goodrich James, JR. Robert K., Pinschmidt, Poelma Justin, Robeson Lloyd M., Rolland Jason P.
Принадлежит:

A method of forming a three-dimensional object, wherein said three-dimensional object is an insert for use between a helmet and a human body, is described. The method may use a polymerizable liquid, or resin, useful for the production by additive manufacturing of a three-dimensional object, comprising a mixture of (i) a light polymerizable liquid first component, and (ii) a second solidifiable component that is different from said first component. 1. A method of forming a three-dimensional object , wherein said three-dimensional object is an insert for use between a helmet and a human body , comprising:(a) providing a carrier and an optically transparent member having a build surface, said carrier and said build surface defining a build region therebetween;(b) filling said build region with a polymerizable liquid, said polymerizable liquid comprising a mixture of (i) a light polymerizable liquid first component, and (ii) a second solidifiable component that is different from said first component;(c) irradiating said build region with light through said optically transparent member to form a solid polymer scaffold from said first component and also advancing said carrier away from said build surface to form a three-dimensional intermediate having a shape of said insert, said three-dimensional intermediate containing said second solidifiable component carried in said scaffold in unsolidified and/or uncured form; and(d) subsequent to said irradiating step, heating, microwave irradiating, or both heating and microwave irradiating, second solidifiable component in said three-dimensional intermediate to form said insert.2. The method of claim 1 , wherein said second solidifiable component comprises a polymerizable liquid solubilized in or suspended in said first component.3. The method of claim 1 , wherein said second solidifiable component comprises:(i) a polymerizable solid suspended in said first component;(ii) a polymerizable solid solubilized in said first component; ...

Подробнее
Номер записи: 86
02-02-2017 дата публикации

PROCESSING METHOD FOR LENS FILM

Номер: US20170028656A1
Автор: TSAO HAN-WEI, WU TUNG-YEN
Принадлежит:

A processing method for a lens film is provided. The lens includes a master slice and a base plate. The processing method includes: performing a shaping process on the base plate to form a curvature; performing a cleaning process to form a microstructure on a surface of the master slice; applying a fixed amount of adhesive between the base plate and the master slice, performing a pressing operation on the base plate and the master slice by the mold to form a lens; and performing a curing process on the lens to complete the processing of the lens film. Thus, an optimal attaching effect that the lens is attached without air bubbles and wrinkles can be achieved. 1. A processing method for a lens film , the lens at least comprising a master slice and a base plate , the processing method for a lens film comprises steps of:{'b': '1', 'Step : performing a shaping process on the base plate to form a curvature for the base plate;'}{'b': '2', 'Step : performing a cleaning process to form a microstructure on a surface of the master slice;'}{'b': '3', 'Step : positioning and placing the base plate and the master slice in a mold , wherein the mold at least comprises an upper mold and a lower mold , a lower end portion of the upper mold and an upper end portion of the lower mold are joined in a corresponding protruding/recessed manner, and the base plate and the master slice are placed between the upper mold and the lower mold;'}{'b': '4', 'Step : applying a fixed amount of adhesive between the base plate and the master slice;'}{'b': '5', 'Step : performing a pressing operation on the base plate and the master slice by the mold to form the lens ; and'}{'b': '6', 'Step : performing a curing process on the lens to complete the processing of the lens film.'}2. The processing method for a lens film according to claim 1 , wherein the shaping process is one method of hot pressing forming claim 1 , hot pressing extension forming claim 1 , vacuum suction baking forming claim 1 , heating ...

Подробнее
Номер записи: 87
17-02-2022 дата публикации

PROGRESSIVE POWER INTRAOCULAR LENS, AND METHODS OF USE AND MANUFACTURE

Номер: US20220047384A1
Автор: Alarcon Heredia Aixa, CANOVAS VIDAL CARMEN, PIERS PATRICIA ANN, Weeber Hendrik A.
Принадлежит:

Apparatuses, systems and methods for providing improved intraocular lenses (IOLs), include features for reducing side effects, such as halos, glare and best focus shifts, in multifocal refractive lenses and extended depth of focus lenses. Exemplary ophthalmic lenses can include a continuous, power progressive aspheric surface based on two or more merged optical zones, the aspheric surface being defined by a single aspheric equation. Continuous power progressive intraocular lenses can mitigate optical side effects that typically result from abrupt optical steps. Aspheric power progressive and aspheric extended depth of focus lenses can be combined with diffractive lens profiles to further enhance visual performance while minimizing dysphotopsia effects. The combination can provide an increased depth of focus that is greater than an individual depth of focus of either the refractive profile or the diffractive profile 1. An ophthalmic lens , comprising:a first surface and a second surface disposed about an optical axis, the lens being characterized by an extended depth of focus; anda refractive profile imposed on one of the first surface or the second surface; and{'claim-text': ['wherein the refractive profile comprises a continuous high order aspheric surface profile that results in a radial power progressive lens; and', 'wherein the combination of the refractive profile and diffractive profile provides an increased depth of focus that is greater than an individual depth of focus of either the refractive profile or the diffractive profile.'], '#text': 'a diffractive profile imposed on one of the first surface or the second surface;'}2. The lens of claim 1 , wherein the diffractive profile affects chromatic aberration.3. The lens of claim 1 , wherein the diffractive profile has a phase delay greater than 1λ.4. The lens of claim 1 , wherein the diffractive profile overlaps the refractive profile.5. The lens of claim 1 , wherein the refractive profile and the diffractive ...

Подробнее
Номер записи: 88
01-02-2018 дата публикации

Mesh Size Control of Lubrication in Gemini Hydrogels

Номер: US20180030209A1
Автор: Angelini Thomas E., Nixon Ryan M., Pitenis Angela A., Sawyer Wallace G., Schulze Kyle D., Uruena Juan Manuel
Принадлежит:

A device comprises a surface that is a hydrogel having a targeted mesh size that permits a low-speed friction coefficient near or lower that that typically reported for cartilage of 0.01 to 0.02, a transition. The device can be a contact lens to sit on the cornea where, during a blink, eyelid slides past the eye surface at about 100 mm s. The hydrodynamic lubrication of the hydrogel of the device separates the contact lens surface from the surfaces of the tarsal conjunctiva and marginal conjunctiva of the eyelid. Other devices that can comprise the hydrogel of a targeted mesh size are those that can contact cartilage of articulating joints. 121-. (canceled)22. A soft contact lens , comprising a lens body of a silicone hydrogel material and a coating of a non-silicone hydrogel thereon , wherein the silicone hydrogel material comprises first repeating units of at least one hydrophilic vinylic monomer and second repeating units of at least one silicone-containing vinylic monomer , a silicone-containing vinylic macromer , or a combination thereof , wherein the coating has a thickness of at least 20 nm , wherein the soft contact lens has a surface mesh size of 4.5 nm to 10.6 nm.23. The soft contact lens according to claim 22 , wherein the coating has a thickness of 0.1 μm to 20 μm.24. The soft contact lens according to claim 22 , wherein the coating has a thickness of 0.25 μm to 15 μm.25. The soft contact lens according to claim 22 , wherein the soft contact lens has a surface mesh size of 4.5 nm to 10.6 nm.26. The soft contact lens according to claim 22 , wherein the soft contact lens has a surface mesh size of 6.0 nm to 10.6 nm.27. The soft contact lens according to claim 22 , wherein the soft contact lens has: an elastic modulus of from about 0.1 MPa to 1.8 MPa; a water content of from about 10% to 80% by weight when fully hydrated; a water-break-up time of at least about 10 seconds; a water contact angle of about 100 degrees or less; or any combination thereof.28. ...

Подробнее
Номер записи: 89
17-02-2022 дата публикации

Method of coating an eyeglass lens

Номер: US20220048066A1
Автор: Christian POEPPERL, Christian Tuss, Herger ALT, Joerg Luderich, Michael Kreis
Принадлежит: Shape Engineering GmbH

The invention relates to a method for coating eyeglass lenses, in particular for coating the edge of eyeglass lenses by means of a needle metering device or jet metering device, wherein the eyeglass lens and the metering device are moved relative to one another and at the same time a coating material is applied to the eyeglass lens, in particular to the edge thereof, from the metering device. The control data for controlling the movement of the eyeglass lens and/or of the metering device are determined before and/or during the application process on the basis of geometric data of the metering device and geometry data of the eyeglass lens surface to be coated, said geometry data of the eyeglass lens surface to be coated being measured or being drawn from a data store.

Подробнее
Номер записи: 90
01-02-2018 дата публикации

OPTICAL PART AND METHOD FOR MANUFACTURING OPTICAL PART

Номер: US20180031796A1
Автор: Kobayashi Daigo
Принадлежит:

A plastic lens is fixed by a holder biting into the plastic lens, a side surface of the plastic lens has a gate trace, and a bite amount into the plastic lens of the holder closest to the gate trace is smaller than an average bite amount into the plastic lens of the holder. 1. An optical part comprising:a plastic lens having a side surface connecting a first optical surface and a second optical surface, between the first optical surface and the second optical surface; anda holder, wherein:the plastic lens is fixed by a holder biting into the plastic lens,the side surface of the plastic lens has a gate trace, and a bite amount into the plastic lens of the holder closest to the gate trace is smaller than an average bite amount into the plastic lens of the holder.2. The optical part according to claim 1 , wherein a bite amount of the holder closest to the gate trace into the plastic lens is zero.3. The optical part according to claim 1 , wherein the optical part is a rectangle having a plurality of side surfaces claim 1 , and among the plurality of side surfaces claim 1 , a bite amount of the holder on a side surface having the gate trace is smaller than a bite amount of the holder on a side surface adjacent to the side surface having the gate trace.4. The optical part according to claim 1 , wherein the lens is an eyepiece lens and has an eyepiece side lens surface and an objective side lens surface claim 1 , and the holder bites into the eyepiece side lens surface.5. The optical part according to claim 1 , wherein a material forming the holder is a material including reinforcing fiber in a material including polycarbonate claim 1 , ABS claim 1 , PS claim 1 , PMMA claim 1 , or a composite material thereof.6. The optical part according to claim 5 , wherein a content of the reinforcing fiber in the material forming the holder is 10% by weight or more and 50% by weight or less.7. The optical part according to claim 1 , wherein an average bite amount into the plastic lens ...

Подробнее
Номер записи: 91
01-02-2018 дата публикации

Toric Contact Lens Having A Ballast Mark Representing A Lens Identification Code

Номер: US20180031863A1
Автор: Ochrombel Rene
Принадлежит:

A toric contact lens () having a front surface and a rear surface, one of said front and rear surfaces includes a toric optical zone and a lens edge surrounding the contact lens (). The contact lens further has a ballast axis () and includes at least one ballast mark () identifying the position of the ballast axis (). Each ballast mark () includes a one-dimensional dot pattern () having a lens identification code and being arranged to extend radially towards the lens edge at an angular position relative to the position of the ballast axis (). The angular position of the one-dimensional dot pattern identifies the position of the ballast axis. 111134142433. A toric contact lens () having a front surface and a rear surface , one of said front and rear surfaces including a toric optical zone , and a lens edge surrounding said contact lens () , said contact lens () further having a ballast axis () and comprising at least one ballast mark ( , , ) identifying the position of the ballast axis () ,{'b': 41', '42', '43', '5', '3', '5', '3, 'wherein each ballast mark (, , ) comprises a one-dimensional dot pattern (), the one-dimensional dot pattern comprising a lens identification code and being arranged to extend radially towards the lens edge at an angular position relative to the position of the ballast axis (), the angular position of the one-dimensional dot pattern () identifying the position of the ballast axis ().'}215. The contact lens () according to claim 1 , wherein the one-dimensional dot pattern () represents a binary code including the lens identification code.3167571. The contact lens () according to claim 1 , wherein each of the front and rear surfaces comprise a central optical zone () which is surrounded by a peripheral zone () claim 1 , and wherein the one-dimensional dot pattern () is arranged in the peripheral zone () of the contact lens ().4167571. The contact lens () according to claim 2 , wherein each of the front and rear surfaces comprise a central ...

Подробнее
Номер записи: 92
30-01-2020 дата публикации

CONTACT LENS FOR INCREASING TEAR PRODUCTION

Номер: US20200030615A1
Автор: Ackermann Douglas Michael, Doraiswamy Anand, FRANKE Manfred, HAMILTON Daniel N., LOUDIN James Donald
Принадлежит:

Described here are devices, systems, and methods for increasing tear production by stimulating the cornea, conjunctiva, and/or subconjunctiva. In some variations, the devices may be in the form of a contact lens. The contact lens may comprise a lens body and a stimulator chip, where the stimulator chip is embedded in the lens body. An external power source wirelessly transmits energy to the stimulator chip, where the stimulator chip may convert the energy to an electric waveform to stimulate the cornea, conjunctiva, and/or subconjunctiva. Stimulation may activate the lacrimal reflex to increase tear production. The devices and systems for increasing tear production may be used in methods of treating dry eye, reducing the symptoms of tired eye, increasing comfort for contact lens wearers, and extending the number of years a contact lens user can wear contacts. Also described are methods of manufacturing a contact lens. 120-. (canceled)21. A method of treating dry eye disease in an eye of a subject , comprising: 'a photodiode for receiving the energy from the external power source to activate the stimulator, the photodiode configured to convert the energy to the stimulus; and', 'receiving, by a stimulator, energy from an external power source, the stimulator configured to be positioned in a subconjunctival space of the eye and deliver a stimulus to a lacrimal nerve for increasing tear production, the stimulator comprisingdelivering, from the stimulator, the stimulus to the lacrimal nerve of the subject to cause an increase in tear production, thereby treating the dry eye disease in the subject.22. The method of claim 21 , further comprising: periodically replacing the stimulator in the eye of the subject claim 21 , the replacing including removing the stimulator from a first location in the eye and placing a new stimulator in a second location in the eye.23. The method of claim 21 , wherein the external power source comprises a laser diode.24. The method of claim 21 , ...

Подробнее
Номер записи: 93
31-01-2019 дата публикации

Methods of producing three-dimensional objects from materials having multiple mechanisms of hardening

Номер: US20190031911A1
Автор: James Goodrich, Jason P. Rolland, Joseph M. Desimone, Justin POELMA, Kai Chen, Lloyd M. Robeson, Robert PINSCHMIDT
Принадлежит: Carbon Inc

A method of forming a three-dimensional object is carried out by: (a) providing a carrier and an optically transparent member having a build surface, the carrier and the build surface defining a build region therebetween; (b) filling the build region with a polymerizable liquid, the polymerizable liquid including a mixture of (i) a light polymerizable liquid first component, and (ii) a second solidifiable component that is different from the first component; (c) irradiating the build region with light through the optically transparent member to form a solid polymer scaffold from the first component and also advancing the carrier away from the build surface to form a three-dimensional intermediate having the same shape as, or a shape to be imparted to, the three-dimensional object, and containing the second solidifiable component carried in the scaffold in unsolidified and/or uncured form; and (d) concurrently with or subsequent to the irradiating step, solidifying and/or curing the second solidifiable component in the three-dimensional intermediate to form the three-dimensional object.

Подробнее
Номер записи: 94
04-02-2021 дата публикации

APPARATUS AND METHODS FOR MOLDING RIGID OCULAR LENSES

Номер: US20210031471A1
Автор: Newman Stephen D.
Принадлежит:

One embodiment of a rigid gas permeable ocular lens may be formed by a process including forming a portion of a mold including a first side having a profile shaped to form an anterior surface of the rigid gas permeable ocular lens, applying a liquid lens material to the first side of the portion of the mold, and at least partially curing the liquid lens material to form the rigid gas permeable ocular lens. Methods of forming molds for rigid gas permeable ocular lenses, including molds for casting rigid gas permeable ocular lenses having a desired surface smoothness and desired dimensional tolerances are also provided. 1. A method of forming a rigid gas permeable orthokeratology lens , comprising:forming at least a portion of a contact lens mold including a first surface having a profile shaped to form an anterior surface of the orthokeratology lens;forming at least a portion of the contact lens mold including a second surface having a profile shaped to form a posterior surface of the orthokeratology lens;applying a liquid lens material between the first surface and the second surface of the contact lens mold; andat least partially curing the liquid lens material in the contact lens mold to form the orthokeratology lens.2. The method of claim 1 , wherein at least one surface of the rigid gas permeable orthokeratology lens has an Rroughness of less than about 5 nanometers.3. The method of claim 2 , further comprising cast molding the rigid gas permeable orthokeratology lens.4. The method of claim 2 , wherein the at least a portion of the mold is free of polishing prior to forming the rigid gas permeable orthokeratology lens to produce the rigid gas permeable orthokeratology lens with the Rroughness of less than about 5 nanometers.5. The method of claim 1 , wherein at least partially curing the liquid lens material comprises exposing the liquid lens material to actinic radiation.6. The method of claim 1 , wherein: machining a first blank to form a male injection mold ...

Подробнее
Номер записи: 95
05-02-2015 дата публикации

Method For Producing Polarizing Lenses, And Polarizing Lens Obtained By Said Method

Номер: US20150036097A1
Автор: CLERC Didier, LEDIEN Franck, MARTINS Sébastien
Принадлежит:

The invention relates to a polarizing lens consisting, in order, of a polyamide mechanical substrate, a polyvinyl alcohol intermediate layer, and a cellulose triacetate outer layer. The invention also relates to a method for manufacturing such a lens. 1. A process for producing a lens , comprising:preheating a laminated film, comprising first and second outer layers with the first outer layer having first and second opposing surfaces and comprising cellulose triacetate (CTA), an intermediate layer having first and second opposing surfaces and comprising polyvinyl alcohol (PVA), wherein the first surface of the intermediate layer is disposed over the second surface of the first outer layer and the second outer layer has first and second opposing surfaces and is comprised of polyamide, wherein the first surface of the second outer layer is disposed over the second surface of the intermediate layer, and wherein preheating the laminated film comprises preheating the first outer layer to a first temperature and preheating the second outer layer to a second, different temperature;thermoforming the preheated laminated film, wherein the first outer layer is heated at a third temperature and the second outer later is heated at a fourth, difference temperature;disposing the thermoformed film in a lens-shaped mold having at least first and second opposing surfaces, wherein the first surface of the first outer layer of the laminated film is adapted to couple to the first surface of the lens-shaped mold;injecting polyamide into the lens-shaped mold such that the second outer layer couples with the injected polyamide to form a mechanical support layer of the lens; anddecoupling the lens from the lens-shaped mold.2. The process as claimed in claim 1 , wherein preheating the laminated film further comprises:drying the laminated film.3. The process as claimed in claim 1 , wherein thermoforming the preheated laminated film comprises:thermoforming the preheated laminated film in a ...

Подробнее
Номер записи: 96
30-01-2020 дата публикации

Headlight lens assembly

Номер: US20200032974A1
Автор: Kyle HAPPY
Принадлежит: Nissan North America Inc

A headlight lens assembly includes a projector lens portion and an outer portion. The projector lens portion is configured to couple to a projector, and is formed by a multi-step molding process. The outer portion is formed as one piece with the projector lens portion during at least one step of the multi-step molding process.

Подробнее
Номер записи: 97
04-02-2021 дата публикации

Dyeing system

Номер: US20210032809A1
Автор: Koji Abe, Minoru Inuzuka, Motoshi Tanaka, Ryoji Shibata
Принадлежит: Nidek Co Ltd

A dyeing system includes a conveyance device, a reader, a dye fixing device, and a controller. The conveyance device conveys a conveyance unit including the resin body. The reader reads information relating to the conveyance unit. The dye fixing device heats the resin body in the conveyance unit conveyed by the conveyance device and fixes a dye adhering to a surface of the resin body, on the resin body. The controller acquires a parameter for a process executed to the resin body in the conveyance unit, based on the information read by the reader. The controller controls the dye fixing device based on the acquired parameter.

Подробнее
Номер записи: 98
30-01-2020 дата публикации

SPECTACLE LENSES AND METHODS FOR PRODUCING THE SAME FROM A SINGLE SEMI FINISHED LENS

Номер: US20200033634A1
Автор: MATSUSHIMA Masaaki
Принадлежит: HOYA LENS THAILAND LTD.

A method, program, computer program, system for obtaining multiple lenses from one single semi-finished lens, and to corresponding lenses; steps are foreseen for obtaining lens specification information, and generating, on the basis of the lens specification information, integrated surface data including lens surface data and junction surface data. The lens surface data includes data representing at least one surface for each of the at least two lens units; the junction surface data includes data representing at least one junction surface joining respective surfaces of the at least two lens units. The integrated surface data represents a physical surface that is to be obtained by machining one single semi-finished lens. 1. A method for designing lens units using a computer , the method comprising steps of:obtaining lens specification information; said lens surface data comprises data representing at least one surface for each of at least two lens units,', 'said junction surface data comprises data representing at least one junction surface joining respective surfaces of said at least two lens units, and', 'the integrated surface data represents a physical surface that is to be obtained by machining one single semi-finished lens., 'generating, based on the lens specification information, integrated surface data comprising lens surface data and junction surface data, wherein'}2. The method according to claim 1 , wherein said junction surface comprises a continuous surface.3. The method according to claim 2 , wherein said continuous surface is a surface for which at least a first partial derivative exists in at least some points.4. The method according to claim 2 , wherein said continuous surface is a surface for which at least a second partial derivative exists in at least some points.5. The method according to claim 1 , further comprising a step of generating machining programming data corresponding to said integrated surface data claim 1 , wherein the machining ...

Подробнее
Номер записи: 99
11-02-2016 дата публикации

DEVICES AND PROCESSES FOR FABRICATING MULTI-COMPONENT OPTICAL SYSTEMS

Номер: US20160039158A1
Автор: Meyers William E., Neidlinger Hermann H.
Принадлежит:

The present disclosure relates to devices and processes for fabricating a multi-component optical system. A device is an integral mold comprising an attachment portion and a cup portion having a cavity, and the mold further comprises a first optical component. The cavity of the mold contains additional optical components to form a multi-component optical system blank. Another device is a multi-component optical system blank. A process for fabricating a multi-component optical system blank comprises providing an integral mold comprising a first optical component, adding at least a second optical component, shaping the mold after addition of an optical component, and shaping the resultant blank into an optical system. A further device is a multi-component optical system produced in a process disclosed herein. 1. A mold for fabricating a multi-component optical system blank comprising:a cup portion, wherein the cup portion comprises an inner wall and a first cavity defined by the inner wall; andan attachment portion;wherein the mold comprises a first optical component, andwherein the mold comprises a portion of the blank.2. The mold of claim 1 , further comprising a reference surface.3. The mold of claim 1 , wherein the cup portion further comprises a bottom wall and a first axial wall.4. The mold of claim 3 , wherein the inner wall is concave.5. The mold of claim 3 , the inner wall further comprising a first bottom surface and a first axial surface.6. The mold of claim 1 , wherein the first cavity contains a second optical component.7. The mold of claim 6 , wherein the first cavity contains an nth optical component.8. The mold of claim 7 , wherein at least one optical component is selected from a group consisting of polarization filters claim 7 , refractive lenslets claim 7 , diffractive lenslets claim 7 , selective chromatic filters claim 7 , bandpass filters claim 7 , circular polarizing filters claim 7 , linear polarizer filters claim 7 , gray attenuator filters ...

Подробнее
Номер записи: 100