CA1135464A - Cast resin lenses - Google Patents
Cast resin lensesInfo
- Publication number
- CA1135464A CA1135464A CA000361576A CA361576A CA1135464A CA 1135464 A CA1135464 A CA 1135464A CA 000361576 A CA000361576 A CA 000361576A CA 361576 A CA361576 A CA 361576A CA 1135464 A CA1135464 A CA 1135464A
- Authority
- CA
- Canada
- Prior art keywords
- lens
- lens body
- post
- coating
- mold
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/0222—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould the curing continuing after removal from the mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/00009—Production of simple or compound lenses
- B29D11/00432—Auxiliary operations, e.g. machines for filling the moulds
- B29D11/00442—Curing the lens material
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
- C08J3/244—Stepwise homogeneous crosslinking of one polymer with one crosslinking system, e.g. partial curing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31507—Of polycarbonate
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Physics & Mathematics (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Thermal Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Mechanical Engineering (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Eyeglasses (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Surface Treatment Of Glass (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
Abstract Of The Disclosure The method of making a post-cured cast resin lens comprising the steps of: casting an allyl diglycol carbonate resin in a mold to the shape desired of the lens; partially curing the resin in the mold to produce a lens body; removing the partially cured lens body from the mold; coating the partially cured lens body with a readily removable material which is impervious to oxygen; exposing the coated lens body to a post-curing temperature above room temperature until substantially complete polymerization of all portions and surfaces of the lens body beneath the coating takes place;
and removing the coating for exposure and use of the post-cured lens which features high surface cure and abrasion resistance,
and removing the coating for exposure and use of the post-cured lens which features high surface cure and abrasion resistance,
Description
.35;~
I~I~ROVEM~Nl:~'S I~l CAST F~S IN LENSES
BAC~CGROU~D O~ THE Il~rVEl`JTTO~
Field of the Invention:
.
Manufacture or cast resin lenses with particular re~erence to im~rovements in post-cure procedures.
Discussion of the Prior Art:
In the manufacture of lenses of cast allyl diglycol carbonate and copolymers o~ the monomer and other rasins, it is desirable to remove the castings early in the cure cycle for ease o~ separation from the molds and to prevent costly ~reaXage of molds at separation. This ear7y removali however, requires post-curing of ~he caa~t lenses wherein exposure to oxygen normally inhibits further polymerization of the sur~aces - of the lenses A Accordingly, the lenses are left vulnerable to surface abrasion and are dir~icult to dye to uniform color densities.
In view of the foregoing, an object of this i~vention is to avoid the usual low sur~ace cure of post cured lenses that have been removed from their molds early in the pre-liminary curing cycle.
A further object is to accomplish grea~er than usualyield and quality of cast lens products with ~inimal cost and 35~
complication of equipment and/or procedure.
Other objects and advan-tayes of the invention will become appaxent from the following description.
According to an aspec-t OL the invention there is provided the method oE making a post-cured cast resin lens comprising the steps of: casting an allyl diglycol carbonate resin in a mold to the shape desired of the lens; partlally curing the resin in the mold to produce a lens body; removiny the partially cured lens body from the mold; coating the partially cured lens body with a readily removable material which is impervious to oxygen; exposing the coated lens body to a post curing temperature above room temperature until substantially complete polymerization of all portions and surfaces of the lens body beneath the coating takes place; and removing the aforesaid coating for exposure and use of the post-cured l.ens which features high surface cure and abrasion resistance.
DESCRIPTION OF THE D.RAWINGS
Fig. 1 is an illustratlon in cross-section of the apparatus and method used to cast resin lenses;
ms/
,.. .
~IL35~
Fig. 2 illustrates part:ial removal of a lens from its castiny apparatus;
Fig. 3 illustrates dip coating of the lens after complete remova~ from i~_s castin~ apparatus;
dm~ 3a -, .. .
.
3L~L3~
Fig~ 4 depicts a post-curing oven in,o which the coated lens is placed ~or post-curing;
Fig. 5 illustrates removai of the coasing material after final lens curing; and Fig. 6 illustrates, in cross section, an a7ternative form of lens to which the present invention is especially applicable.
DXSCR-LPTION OF THE PREFE~RED E~ODIl~EL~S
.
With the discovery ~hat o~ygen inhibits polymari~ation of surraces of cast resin lenses in post curing operations, this invention has devissd a post cure procedure which avoids the usual inade~uate surface pol~merization. To k~is end, a lens L cast in a cell 10 between a paix o mold halves 12 and 14 i5 removed, i.e. "picked", early in tha curing c~cle for purposes or easing its removal and to free the mold halves for easy cleaning and reuse as well as to prevent moldpiece breakage by excessive lens material adherence which may result from full curins in the moldpieces~
Early removal of a cast lens from a castin~ mold is herein considered as being any time prior to completion o~
polymeri~ation of the casting precursor but after there has been sufficient gelation to permit handling. It is also pointed out that the casting cell may be designed to produce ,~
~3S~
finished ophthalmic surfaces on one or both sides of lens L.
Hence~ use of the ter~.. "lens" herein is intended to include all forms of the article, i.e. ei.her cor,lpletely surface finished or finished on one side only as in the case o' lens articles which are co~only called blanks.
The removed partially cured lens must, however, be further cured for completion of i~s polymerization into a usable article~ In view 07' exposure to oxygen which inhibits surface polymerization in ordinary post-curing lQ operations, the picked lens is herein provided wi~h coating 16 (Figs. 3 and 4) by dipping (Fig. 3) in~o a readil~ re-movable inert coating material 18 (Fig. 3) sucn as polyvinyl alcohol which is impervious to oxygen. Coating 16, which may alternatively be painted or sprayed in place, protects lens surface 20 from e~posure to environmental oxygen so th~t post curing in oven 22 ~Fig. 4) can proceed with an assurance of full curing (polymerization) o~ all lens sur~aces as wel~ a~
theinterior. By such means, the lenses are arforded im-proved scratch resistance and an adaptabilit~ to eas~ and uniform dyeing.
Post curing in oven 22 at a temperature oi~ approximately 200F for approximately one to th~ee hours will produce de-sirable final polymeriz~tion of lenses or blan~s of the well recognized normal size and~or shape. Greater than usual lens ~r blanX sizes may require longer cycling ana/or higher ~l~35~
curing temperatu es for comple~e in~ernal cure. This would be immediately reco~nized b~ those of ordinar skill in the art who would further Lind no difLiculty in determining proper extensions of post-curing time.
Removal of coating 16, e.g. in a warm aqueous alkaline solution 24 of 1% sodium carbonate, renders t'ne lens ready for use. It may be alternatively or additionally washed in clear warm water if desired. Warming of the aqueous alkaline solution or clear water to approximately 190F will produce desirable results.
Userul coating materials 18 (Fig. 3) are:
1% PU~ Distilled (Polyvinyl alcohol) Wa~er1,000 grams PV~ 10 grams Wetting Agent4 arops
I~I~ROVEM~Nl:~'S I~l CAST F~S IN LENSES
BAC~CGROU~D O~ THE Il~rVEl`JTTO~
Field of the Invention:
.
Manufacture or cast resin lenses with particular re~erence to im~rovements in post-cure procedures.
Discussion of the Prior Art:
In the manufacture of lenses of cast allyl diglycol carbonate and copolymers o~ the monomer and other rasins, it is desirable to remove the castings early in the cure cycle for ease o~ separation from the molds and to prevent costly ~reaXage of molds at separation. This ear7y removali however, requires post-curing of ~he caa~t lenses wherein exposure to oxygen normally inhibits further polymerization of the sur~aces - of the lenses A Accordingly, the lenses are left vulnerable to surface abrasion and are dir~icult to dye to uniform color densities.
In view of the foregoing, an object of this i~vention is to avoid the usual low sur~ace cure of post cured lenses that have been removed from their molds early in the pre-liminary curing cycle.
A further object is to accomplish grea~er than usualyield and quality of cast lens products with ~inimal cost and 35~
complication of equipment and/or procedure.
Other objects and advan-tayes of the invention will become appaxent from the following description.
According to an aspec-t OL the invention there is provided the method oE making a post-cured cast resin lens comprising the steps of: casting an allyl diglycol carbonate resin in a mold to the shape desired of the lens; partlally curing the resin in the mold to produce a lens body; removiny the partially cured lens body from the mold; coating the partially cured lens body with a readily removable material which is impervious to oxygen; exposing the coated lens body to a post curing temperature above room temperature until substantially complete polymerization of all portions and surfaces of the lens body beneath the coating takes place; and removing the aforesaid coating for exposure and use of the post-cured l.ens which features high surface cure and abrasion resistance.
DESCRIPTION OF THE D.RAWINGS
Fig. 1 is an illustratlon in cross-section of the apparatus and method used to cast resin lenses;
ms/
,.. .
~IL35~
Fig. 2 illustrates part:ial removal of a lens from its castiny apparatus;
Fig. 3 illustrates dip coating of the lens after complete remova~ from i~_s castin~ apparatus;
dm~ 3a -, .. .
.
3L~L3~
Fig~ 4 depicts a post-curing oven in,o which the coated lens is placed ~or post-curing;
Fig. 5 illustrates removai of the coasing material after final lens curing; and Fig. 6 illustrates, in cross section, an a7ternative form of lens to which the present invention is especially applicable.
DXSCR-LPTION OF THE PREFE~RED E~ODIl~EL~S
.
With the discovery ~hat o~ygen inhibits polymari~ation of surraces of cast resin lenses in post curing operations, this invention has devissd a post cure procedure which avoids the usual inade~uate surface pol~merization. To k~is end, a lens L cast in a cell 10 between a paix o mold halves 12 and 14 i5 removed, i.e. "picked", early in tha curing c~cle for purposes or easing its removal and to free the mold halves for easy cleaning and reuse as well as to prevent moldpiece breakage by excessive lens material adherence which may result from full curins in the moldpieces~
Early removal of a cast lens from a castin~ mold is herein considered as being any time prior to completion o~
polymeri~ation of the casting precursor but after there has been sufficient gelation to permit handling. It is also pointed out that the casting cell may be designed to produce ,~
~3S~
finished ophthalmic surfaces on one or both sides of lens L.
Hence~ use of the ter~.. "lens" herein is intended to include all forms of the article, i.e. ei.her cor,lpletely surface finished or finished on one side only as in the case o' lens articles which are co~only called blanks.
The removed partially cured lens must, however, be further cured for completion of i~s polymerization into a usable article~ In view 07' exposure to oxygen which inhibits surface polymerization in ordinary post-curing lQ operations, the picked lens is herein provided wi~h coating 16 (Figs. 3 and 4) by dipping (Fig. 3) in~o a readil~ re-movable inert coating material 18 (Fig. 3) sucn as polyvinyl alcohol which is impervious to oxygen. Coating 16, which may alternatively be painted or sprayed in place, protects lens surface 20 from e~posure to environmental oxygen so th~t post curing in oven 22 ~Fig. 4) can proceed with an assurance of full curing (polymerization) o~ all lens sur~aces as wel~ a~
theinterior. By such means, the lenses are arforded im-proved scratch resistance and an adaptabilit~ to eas~ and uniform dyeing.
Post curing in oven 22 at a temperature oi~ approximately 200F for approximately one to th~ee hours will produce de-sirable final polymeriz~tion of lenses or blan~s of the well recognized normal size and~or shape. Greater than usual lens ~r blanX sizes may require longer cycling ana/or higher ~l~35~
curing temperatu es for comple~e in~ernal cure. This would be immediately reco~nized b~ those of ordinar skill in the art who would further Lind no difLiculty in determining proper extensions of post-curing time.
Removal of coating 16, e.g. in a warm aqueous alkaline solution 24 of 1% sodium carbonate, renders t'ne lens ready for use. It may be alternatively or additionally washed in clear warm water if desired. Warming of the aqueous alkaline solution or clear water to approximately 190F will produce desirable results.
Userul coating materials 18 (Fig. 3) are:
1% PU~ Distilled (Polyvinyl alcohol) Wa~er1,000 grams PV~ 10 grams Wetting Agent4 arops
2% PV~ Distilled Water 1,000 gxams PU~ 20 grams Wetting Agent 4 drops 4% PU~ Distilled Water ~,000 grams PU~ 40 grams We~ting Agen~ 4 drops In the foregoing examples of coating solutions, the use of polyvinyl alcohols of molecular weights between 10,000 ,, . :-, ~
3~9~6~
and 90,000 are preferred~ Sui'able ~,etting agents are alXyl aryl sodium sul~onate, sodium lauryl sulrate, octylphenyl poly-thoxye~hanol and/or othe- high molecular weigh~ sulfones.
Solu~ion 24 of sodium carbonate ~Fig. 5) w~ich is used to remove coating 16 may alternatively comprise one vr co~.-binations OI sodium hydroxide, potassium hydroxide and potassiu~ car'.oonate in approximately from 1% to 5% solutions~
Plain water may also be used.
While Figs. 1~5 of the drawings have illustrated lens L
as having smooth, i.e. uninterrupted, opposite si~e surfaces, it should be und~rstood that this invention is equally appli-cable to the post-curing of all of the other ror~s of lenses encountered in the field such as those ~no~n as multifocals, for example. These lenses may have one or more sharp ledges 1, 26 cast partially or fully ac:ross one of their sides as illustrated in Fig. 6~ Ledged lenses, being somewhat more dirficult to remove from casting molds than continuous surface lenses, are particular candidates for.early removal and post-curing according to this inve.ntion.
~hile this invention has been directed more particularly to lenses cast of allyl diglycol car'~onate or copolymers or the mono~er, it should be understood that it is equally appli-cable to the post-curing of articles formed by means or method other than casting and/or materials other than allyl digl~col ,~ car~onate which may be similarly adversely af~ected by ex-~L35~
posure to atmospheric gases during post curing. Also, those seeXing details of prior art lens cas-ting ope.rations ma~
refer to U.S. Patents 2,542,386; 3,13~,000 3,056,166 and/or .
3,8~1,683 as examples.
It is intended that the foregoing disclosure and ac-compan~ing illustrations be exemplar~ or the in~ren~ion and not dellmiting OL its scope~ All modifications of process or equipment apparent to those s~illed in the art are con- .
sidered to be within the scope of this invention.
and 90,000 are preferred~ Sui'able ~,etting agents are alXyl aryl sodium sul~onate, sodium lauryl sulrate, octylphenyl poly-thoxye~hanol and/or othe- high molecular weigh~ sulfones.
Solu~ion 24 of sodium carbonate ~Fig. 5) w~ich is used to remove coating 16 may alternatively comprise one vr co~.-binations OI sodium hydroxide, potassium hydroxide and potassiu~ car'.oonate in approximately from 1% to 5% solutions~
Plain water may also be used.
While Figs. 1~5 of the drawings have illustrated lens L
as having smooth, i.e. uninterrupted, opposite si~e surfaces, it should be und~rstood that this invention is equally appli-cable to the post-curing of all of the other ror~s of lenses encountered in the field such as those ~no~n as multifocals, for example. These lenses may have one or more sharp ledges 1, 26 cast partially or fully ac:ross one of their sides as illustrated in Fig. 6~ Ledged lenses, being somewhat more dirficult to remove from casting molds than continuous surface lenses, are particular candidates for.early removal and post-curing according to this inve.ntion.
~hile this invention has been directed more particularly to lenses cast of allyl diglycol car'~onate or copolymers or the mono~er, it should be understood that it is equally appli-cable to the post-curing of articles formed by means or method other than casting and/or materials other than allyl digl~col ,~ car~onate which may be similarly adversely af~ected by ex-~L35~
posure to atmospheric gases during post curing. Also, those seeXing details of prior art lens cas-ting ope.rations ma~
refer to U.S. Patents 2,542,386; 3,13~,000 3,056,166 and/or .
3,8~1,683 as examples.
It is intended that the foregoing disclosure and ac-compan~ing illustrations be exemplar~ or the in~ren~ion and not dellmiting OL its scope~ All modifications of process or equipment apparent to those s~illed in the art are con- .
sidered to be within the scope of this invention.
Claims (9)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. The method of making a post-cured cast resin lens comprising the steps of:
casting an allyl diglycol carbonate resin in a mold to the shape desired of said lens;
partially curing said resin in said mold to produce a lens body;
removing the partially cured lens body from said mold;
coating the partially cured lens body with a readily removable material which is impervious to oxygen;
exposing the coated lens body to a post curing temperature above room temperature until substantially complete polymerization of all portions and surfaces of said lens body beneath said coating takes place; and removing the aforesaid coating for exposure and use of the post-cured lens which features high surface cure and abrasion resistance.
casting an allyl diglycol carbonate resin in a mold to the shape desired of said lens;
partially curing said resin in said mold to produce a lens body;
removing the partially cured lens body from said mold;
coating the partially cured lens body with a readily removable material which is impervious to oxygen;
exposing the coated lens body to a post curing temperature above room temperature until substantially complete polymerization of all portions and surfaces of said lens body beneath said coating takes place; and removing the aforesaid coating for exposure and use of the post-cured lens which features high surface cure and abrasion resistance.
2. The method according to claim 1 wherein said lenses are coated with polyvinyl alcohol.
3. The method according to claim 2 wherein said lenses are coated by dipping in a solution of polyvinyl alcohol.
4. The method according to claim 3 wherein said solution comprises approximately from 1% to 4% polyvinyl alcohol in water.
5. The method according to claim 3 wherein said solution includes a wetting agent.
6. The method according to claim 1 wherein said coatings are removed with an approximately 1% to 5% solution in water of an ingredient selected from the group consisting of sodium carbonate, sodium hydroxide, potassium hydroxide and potassium carbonate.
7. The method according to claim 6 wherein said solution is warmed for improved coating removal.
8. The method according to claim 7 wherein said warmed solution is approximately 1% sodium carbonate at a temperature of approximately 190°F.
9. The method according to claim 1 wherein said cast lenses comprise at least one optically finished surface over which said coatings are applied.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/088,318 US4273809A (en) | 1979-10-25 | 1979-10-25 | Method of preparing cast resin lenses |
| US088,318 | 1979-10-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1135464A true CA1135464A (en) | 1982-11-16 |
Family
ID=22210671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000361576A Expired CA1135464A (en) | 1979-10-25 | 1980-10-02 | Cast resin lenses |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4273809A (en) |
| BR (1) | BR8006852A (en) |
| CA (1) | CA1135464A (en) |
| DE (1) | DE3040221A1 (en) |
| FR (1) | FR2467679A1 (en) |
| GB (1) | GB2061982B (en) |
Families Citing this family (58)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3126551C2 (en) * | 1981-07-04 | 1983-12-15 | Rolf Dr. 8700 Würzburg Siegel | Manufacturing process for materials for immobilizing proteins and carbohydrate groups |
| US4540532A (en) * | 1984-02-02 | 1985-09-10 | Coburn Optical Industries, Inc. | Method and apparatus for molding ophthalmic lenses |
| EP0209382A3 (en) * | 1985-07-16 | 1988-01-13 | Mitsubishi Petrochemical Co., Ltd. | Cast molding of acrylic plastics |
| US4693446A (en) * | 1985-09-20 | 1987-09-15 | Techna Vision, Inc. | Gasket for molding plastic lenses |
| US5529728A (en) * | 1986-01-28 | 1996-06-25 | Q2100, Inc. | Process for lens curing and coating |
| US6201037B1 (en) | 1986-01-28 | 2001-03-13 | Ophthalmic Research Group International, Inc. | Plastic lens composition and method for the production thereof |
| US5415816A (en) | 1986-01-28 | 1995-05-16 | Q2100, Inc. | Method for the production of plastic lenses |
| US6730244B1 (en) | 1986-01-28 | 2004-05-04 | Q2100, Inc. | Plastic lens and method for the production thereof |
| US5278243A (en) * | 1992-01-14 | 1994-01-11 | Soane Technologies, Inc. | High impact resistant macromolecular networks |
| SE9202925D0 (en) * | 1992-10-07 | 1992-10-07 | Kabi Pharmacia Ab | METHOD IN THE PRODUCTION OF INTRAOCULAR LENSES |
| FR2731226B1 (en) * | 1995-03-03 | 1997-04-25 | Essilor Int | PROCESS FOR PRODUCING A TRANSPARENT ORGANIC GLASS SUBSTRATE AND SUBSTRATE THUS OBTAINED |
| US6022498A (en) | 1996-04-19 | 2000-02-08 | Q2100, Inc. | Methods for eyeglass lens curing using ultraviolet light |
| US6280171B1 (en) | 1996-06-14 | 2001-08-28 | Q2100, Inc. | El apparatus for eyeglass lens curing using ultraviolet light |
| US5989462A (en) * | 1997-07-31 | 1999-11-23 | Q2100, Inc. | Method and composition for producing ultraviolent blocking lenses |
| US6228289B1 (en) * | 1998-09-25 | 2001-05-08 | Q2100, Inc. | Plastic lens systems and methods |
| US6379746B1 (en) | 1999-02-02 | 2002-04-30 | Corning Incorporated | Method for temporarily protecting glass articles |
| US6419873B1 (en) | 1999-03-19 | 2002-07-16 | Q2100, Inc. | Plastic lens systems, compositions, and methods |
| US8003022B2 (en) * | 1999-09-21 | 2011-08-23 | Carl Zeiss Vision Australia Holdings Limited | Method of forming a coated optical element |
| US6960312B2 (en) | 2000-03-30 | 2005-11-01 | Q2100, Inc. | Methods for the production of plastic lenses |
| US6698708B1 (en) | 2000-03-30 | 2004-03-02 | Q2100, Inc. | Gasket and mold assembly for producing plastic lenses |
| US6723260B1 (en) | 2000-03-30 | 2004-04-20 | Q2100, Inc. | Method for marking a plastic eyeglass lens using a mold assembly holder |
| US6716375B1 (en) | 2000-03-30 | 2004-04-06 | Q2100, Inc. | Apparatus and method for heating a polymerizable composition |
| US6632535B1 (en) | 2000-06-08 | 2003-10-14 | Q2100, Inc. | Method of forming antireflective coatings |
| US6612828B2 (en) | 2001-02-20 | 2003-09-02 | Q2100, Inc. | Fill system with controller for monitoring use |
| US6962669B2 (en) | 2001-02-20 | 2005-11-08 | Q2100, Inc. | Computerized controller for an eyeglass lens curing apparatus |
| US7124995B2 (en) * | 2001-02-20 | 2006-10-24 | Q2100, Inc. | Holder for mold assemblies and molds |
| US7083404B2 (en) * | 2001-02-20 | 2006-08-01 | Q2100, Inc. | System for preparing an eyeglass lens using a mold holder |
| US6709257B2 (en) | 2001-02-20 | 2004-03-23 | Q2100, Inc. | Eyeglass lens forming apparatus with sensor |
| US6752613B2 (en) | 2001-02-20 | 2004-06-22 | Q2100, Inc. | Apparatus for preparing an eyeglass lens having a controller for initiation of lens curing |
| US7037449B2 (en) | 2001-02-20 | 2006-05-02 | Q2100, Inc. | Method for automatically shutting down a lens forming apparatus |
| US7052262B2 (en) | 2001-02-20 | 2006-05-30 | Q2100, Inc. | System for preparing eyeglasses lens with filling station |
| US7025910B2 (en) | 2001-02-20 | 2006-04-11 | Q2100, Inc | Method of entering prescription information |
| US6893245B2 (en) | 2001-02-20 | 2005-05-17 | Q2100, Inc. | Apparatus for preparing an eyeglass lens having a computer system controller |
| US6758663B2 (en) | 2001-02-20 | 2004-07-06 | Q2100, Inc. | System for preparing eyeglass lenses with a high volume curing unit |
| US7074352B2 (en) | 2001-02-20 | 2006-07-11 | Q2100, Inc. | Graphical interface for monitoring usage of components of a lens forming apparatus |
| US6712331B2 (en) | 2001-02-20 | 2004-03-30 | Q2100, Inc. | Holder for mold assemblies with indicia |
| US6790022B1 (en) | 2001-02-20 | 2004-09-14 | Q2100, Inc. | Apparatus for preparing an eyeglass lens having a movable lamp mount |
| US7045081B2 (en) | 2001-02-20 | 2006-05-16 | Q2100, Inc. | Method of monitoring components of a lens forming apparatus |
| US7004740B2 (en) | 2001-02-20 | 2006-02-28 | Q2100, Inc. | Apparatus for preparing an eyeglass lens having a heating system |
| US7011773B2 (en) | 2001-02-20 | 2006-03-14 | Q2100, Inc. | Graphical interface to display mold assembly position in a lens forming apparatus |
| US7051290B2 (en) * | 2001-02-20 | 2006-05-23 | Q2100, Inc. | Graphical interface for receiving eyeglass prescription information |
| US6875005B2 (en) | 2001-02-20 | 2005-04-05 | Q1200, Inc. | Apparatus for preparing an eyeglass lens having a gating device |
| US6676399B1 (en) | 2001-02-20 | 2004-01-13 | Q2100, Inc. | Apparatus for preparing an eyeglass lens having sensors for tracking mold assemblies |
| US6808381B2 (en) | 2001-02-20 | 2004-10-26 | Q2100, Inc. | Apparatus for preparing an eyeglass lens having a controller |
| US6726463B2 (en) | 2001-02-20 | 2004-04-27 | Q2100, Inc. | Apparatus for preparing an eyeglass lens having a dual computer system controller |
| US6863518B2 (en) | 2001-02-20 | 2005-03-08 | Q2100, Inc. | Mold filing apparatus having multiple fill stations |
| US6655946B2 (en) | 2001-02-20 | 2003-12-02 | Q2100, Inc. | Apparatus for preparing an eyeglass lens having a controller for conveyor and curing units |
| US6676398B2 (en) | 2001-02-20 | 2004-01-13 | Q2100, Inc. | Apparatus for preparing an eyeglass lens having a prescription reader |
| US6899831B1 (en) | 2001-02-20 | 2005-05-31 | Q2100, Inc. | Method of preparing an eyeglass lens by delayed entry of mold assemblies into a curing apparatus |
| US6790024B2 (en) | 2001-02-20 | 2004-09-14 | Q2100, Inc. | Apparatus for preparing an eyeglass lens having multiple conveyor systems |
| US6702564B2 (en) | 2001-02-20 | 2004-03-09 | Q2100, Inc. | System for preparing an eyeglass lens using colored mold holders |
| US7139636B2 (en) * | 2001-02-20 | 2006-11-21 | Q2100, Inc. | System for preparing eyeglass lenses with bar code reader |
| US7060208B2 (en) | 2001-02-20 | 2006-06-13 | Q2100, Inc. | Method of preparing an eyeglass lens with a controller |
| US6840752B2 (en) * | 2001-02-20 | 2005-01-11 | Q2100, Inc. | Apparatus for preparing multiple eyeglass lenses |
| SE0101702D0 (en) * | 2001-05-15 | 2001-05-15 | Ardenia Investments Ltd | Novel potentiating compounds |
| US7044429B1 (en) | 2002-03-15 | 2006-05-16 | Q2100, Inc. | Methods and systems for coating eyeglass lens molds |
| JP2003340843A (en) * | 2002-03-18 | 2003-12-02 | Canon Inc | Manufacturing method for composite mold element |
| US6464484B1 (en) | 2002-03-30 | 2002-10-15 | Q2100, Inc. | Apparatus and system for the production of plastic lenses |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA471512A (en) * | 1951-02-13 | Lester Mahoney Paul | Protective coatings for synthetic resin surfaces | |
| US2542386A (en) * | 1947-12-03 | 1951-02-20 | John O Beattie | Manufacture of plastic lenses from monomeric materials |
| US3109763A (en) * | 1955-09-20 | 1963-11-05 | Johns Manville Fiber Glass Inc | Method and apparatus for forming a fiber reinforced resin panel |
| US3056166A (en) * | 1959-07-20 | 1962-10-02 | Bausch & Lomb | Lens mold and apparatus |
| GB920609A (en) * | 1960-07-15 | 1963-03-13 | Combined Optical Ind Ltd | Improvements in or relating to the manufacture of lenses and the like |
| FR81513E (en) * | 1962-03-13 | 1963-10-04 | Lentilles Ophtalmiques Rationn | Process for manufacturing optical elements and in particular ophthalmic lenses made of plastics |
| US3136000A (en) * | 1962-10-18 | 1964-06-09 | American Optical Corp | Mold for producing lenses and lens blanks from polymerizable materials |
| DE2142731A1 (en) * | 1971-08-26 | 1973-03-15 | Delog Detag Flachglas Ag | PROCESS FOR INCREASING THE SURFACE QUALITY OF FIBER WEBS IMPROVED WITH CURED RESIN |
| US3881683A (en) * | 1973-11-29 | 1975-05-06 | American Optical Corp | Gasket for lens mold |
| GB1484276A (en) * | 1974-08-22 | 1977-09-01 | Loctite Ltd | Dental filling composition |
| US3971872A (en) * | 1974-09-30 | 1976-07-27 | American Optical Corporation | Process for the production of an abrasion resistant optical element |
| US4064308A (en) * | 1975-05-19 | 1977-12-20 | American Optical Corporation | Abrasion and antifog-resistant optical element |
| US4129628A (en) * | 1976-07-19 | 1978-12-12 | Rca Corporation | Method of making a thermoplastic lens by vacuum forming |
| US4079160A (en) * | 1977-02-07 | 1978-03-14 | Joseph Philipson | Abrasion-resistant optical element |
-
1979
- 1979-10-25 US US06/088,318 patent/US4273809A/en not_active Expired - Lifetime
-
1980
- 1980-10-02 CA CA000361576A patent/CA1135464A/en not_active Expired
- 1980-10-21 GB GB8033937A patent/GB2061982B/en not_active Expired
- 1980-10-22 FR FR8022585A patent/FR2467679A1/en active Granted
- 1980-10-24 DE DE19803040221 patent/DE3040221A1/en not_active Withdrawn
- 1980-10-24 BR BR8006852A patent/BR8006852A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2467679A1 (en) | 1981-04-30 |
| GB2061982B (en) | 1983-08-17 |
| US4273809A (en) | 1981-06-16 |
| FR2467679B1 (en) | 1984-01-06 |
| BR8006852A (en) | 1981-04-28 |
| DE3040221A1 (en) | 1981-05-14 |
| GB2061982A (en) | 1981-05-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1135464A (en) | Cast resin lenses | |
| EP1245372B1 (en) | Mould and method for the production of ophthalmic lenses | |
| US3222432A (en) | Methods of producing optical and ophthalmic lenses from thermosetting resin materials | |
| US2787024A (en) | Method of making plastic covered golf balls | |
| US5158718A (en) | Contact lens casting | |
| GB1584883A (en) | Method of forming an ocular membrane | |
| DE58909119D1 (en) | Method and device for producing a housing shell of an in-the-ear hearing aid, and housing shell produced by the method. | |
| JPH0218012A (en) | Contact lens and manufacture thereof | |
| US4695241A (en) | Dip mold and process | |
| EP0699491A2 (en) | Forming die, casting method using the forming die, core and casting method using the core | |
| ATE152038T1 (en) | METHOD FOR PRODUCING A HYDROPHILE CONTACT LENS | |
| US2977636A (en) | Method of molding a hollow rubber article | |
| GB862960A (en) | Improved printing plates | |
| CA2145967A1 (en) | Casting method using core made of synthetic resin, core made of synthetic resin, and cast product | |
| EP2373479B1 (en) | Mold and method for manufacturing an ophtalmic lens | |
| US3816903A (en) | Method of fabricating an impregnated porous metal mould | |
| US5358672A (en) | Method for removing finished articles from glass, plastic or metallic molds | |
| US4069000A (en) | Mold for shaping and curing reinforced plastic material | |
| US2810161A (en) | Process for producing seamless cosmetic gloves | |
| US2408540A (en) | Method of forming scratchresistant articles | |
| US2994111A (en) | Method of making metallized plastic parts | |
| EP0190897A2 (en) | Moulding methods | |
| US4287931A (en) | Vacuum-forming procedure in metal casting | |
| JP3424848B2 (en) | Plastic lens manufacturing method | |
| JPS5793132A (en) | Production of rubber hose |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |