CA1091507A - Method of printing soft contact lenses - Google Patents
Method of printing soft contact lensesInfo
- Publication number
- CA1091507A CA1091507A CA312,884A CA312884A CA1091507A CA 1091507 A CA1091507 A CA 1091507A CA 312884 A CA312884 A CA 312884A CA 1091507 A CA1091507 A CA 1091507A
- Authority
- CA
- Canada
- Prior art keywords
- soft contact
- contact lens
- contact lenses
- printing
- letters
- 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
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 238000004040 coloring Methods 0.000 claims abstract description 5
- 239000007864 aqueous solution Substances 0.000 claims abstract description 3
- 230000008961 swelling Effects 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 230000005855 radiation Effects 0.000 claims description 4
- 238000007654 immersion Methods 0.000 claims description 2
- 239000002904 solvent Substances 0.000 claims description 2
- 239000000243 solution Substances 0.000 description 8
- 239000000976 ink Substances 0.000 description 7
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 108010010803 Gelatin Proteins 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000006103 coloring component Substances 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 230000004438 eyesight Effects 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- BALXUFOVQVENIU-KXNXZCPBSA-N pseudoephedrine hydrochloride Chemical compound [H+].[Cl-].CN[C@@H](C)[C@@H](O)C1=CC=CC=C1 BALXUFOVQVENIU-KXNXZCPBSA-N 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
-
- 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
- B29D11/00865—Applying coatings; tinting; colouring
- B29D11/00894—Applying coatings; tinting; colouring colouring or tinting
- B29D11/00903—Applying coatings; tinting; colouring colouring or tinting on the surface
-
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
- G02B1/041—Lenses
- G02B1/043—Contact lenses
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/021—Lenses; Lens systems ; Methods of designing lenses with pattern for identification or with cosmetic or therapeutic effects
Landscapes
- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- General Health & Medical Sciences (AREA)
- Eyeglasses (AREA)
- Printing Methods (AREA)
Abstract
METHOD OF PRINTING SOFT CONTACT LENSES
ABSTRACT OF THE DISCLOSURE
A method is provided for distinctly and durably printing minute letters or symbols necessary to represent characteristics of a soft contact lens on a selected marginal area of surface of the soft contact lens which comprises stamping letters or/and symbols on the surface of a soft contact lens by the use of an aqueous solution or paste of a light sensitive coloring composition which is hardened by the application of ultraviolet rays and then applying ultraviolet ray to the stamped surface of the soft contact lens.
ABSTRACT OF THE DISCLOSURE
A method is provided for distinctly and durably printing minute letters or symbols necessary to represent characteristics of a soft contact lens on a selected marginal area of surface of the soft contact lens which comprises stamping letters or/and symbols on the surface of a soft contact lens by the use of an aqueous solution or paste of a light sensitive coloring composition which is hardened by the application of ultraviolet rays and then applying ultraviolet ray to the stamped surface of the soft contact lens.
Description
BACKGROUND OF THE INVENTION
1. _ Field_of the Invention This invention relates to a method for distinctly ànd durably printing minute letters or symbols on the ` 15 surfaco of a soft contact lens.
.. ; . ~ .
~'~!, 2~ Description of the Prior Art ~; Soft contact lenses made from a hydrophilic thermo-plastic resin ha~e been developed recently. They are better than hard contact lenses in the good wear feeling and the .
`20 -considerable long time wearability given from the first '` wearing day. Therefore, soft contact lenses have been .. .
- replacing hard contact lenses. Many companies have produced ., various kinds of contact lenses of their own. But, these . ~ .
., . ~ '',` '' r 1 ~
.~'. ' -:
;~
~ ' "''':
.
5~7 contact lenses are so similar on~ another in the shape that even specialists of the maker can hardly differentiate their own product from others. Wearers can hardly tell between the left one and right one of a pair, and between the front and back of a lens, especially a thin lens, because soft contact lenses are so soft that the front is easily turned over to the back and vice versa. Therefore, lt is considered to be very significant for the sake of overcoming above said problems to mark on the surface of soft contact lenses. However, soft contact lenses easily get wet because of their hydrophilic property, so that there has been heretofore no effective method for distinctly and durably printing such minute letters or symbols as being printed on a marginal area of the surface of soft contact lens.
SUMMAP~Y OF THE INVENTION
It is an object of the present invention to provide a method for distinctly and durably printing minute letters or symbols on the surface of soft contact lenses.
.... . .
In one particular aspect the present invention provides a method of printing soft contact lenses with identifying - ind~cia, comprising the steps of:
~-. (a) causing the soft contact lens to swell by immersion i in a swelling agent selected from the group consisting of water and hydrophilic solvents;
(b) wiping the surface oE the soft contact lens in at ~, least the area to be printed to remove excess swelling agent;
; (c) stamping the prepared surface of the soft contact lens with identifying indicia comprised of an aqueous solution or paste of a light resistlve coloring composition hardenable by ultraviolet radiation; and (d) hardening said composition by application of ultraviolet radiation.
;` ' ~'' .
: . . . . . . .
~9iS~7 I
DETAII.ED DESCRIPTION OF THE PREFERR~D EMBODIMENTS
The light sensiti~e coloring composition of this invention includes all of known composition which contains a coloring component and is hardened by the photo polymeriza-tion reaction caused by irradiation of ultraviolet ray, andalso may include even unknown compositions which con~ain ` a coloring componen~ and are hardened by the photo polymeriza-tion reaction.
The following examples are presented in order to ` 10 illustrate the practice of the method of this invention.
Powdered light sensitive dye composition (Product of Toppan Printing Co., Ltd.) is dissolved in water in an amount ` of 5 - 30 wt.%. Ethylene glycol, glycerine, polyvinyl alcohol ~-or polyvinyl pyrrolidone is preferably added thereto in an ~ -amount of 5 - 20 wt.~, because the addition can prevent vaporization of water from the solution, so that the solution can be available for a long period of time. Thus prepared solution is soaked into a porous rubber stamp graved with necessary letters or symbols. The stamp is wiped to remove ` 20 excessive solution from the surface, and then impressed evenly to the surface of a soft contact lens. The soft contact lens to be stamped is taken out of the isotonic -.,sodium chloride solution, and wiped to remove the solution from the surface, and placed on a table to be stamped.
; 25 One stamping is kept for several seconds. I`hus, successive ,.,~ , ~ - 3 -:.
I
~ ~0915~7 ,.
,' stampings are feasible dozens of time without any spread of the solution on the surface of lens. The workability is very good. The stamped soft contact lens is irradiated - with ultraviolet ray by a ultraviolet lamp, so that the solution adhered on the surface by the stamping is color developed and becomes insoluble. The one beca~lle insoluble ~` is no longer dissolved and spread around on the surface by the following boiling in water or chemical treatments thereof, - so that the minute letters or symbols printed on the surface ~ ~.
-~ 10 of the soft contact lens are kept permanently as it is. ;
- Another method is cited whlch comprises using one of UV inks by the use of an intaglio transfer press. An intagll~o plate made of~c~opper or glass on which the letters or symbols are engraved i5 covered wlth~the~UV ink paste ~ and is.squeezed by a spatula to remain~the UV lnk paste only in the engraved part of the plate, Then~ the remained UV
.-, : : , ink pas~te is transferred to the conical transfer made of - a~sillcone resin or gelatin in the intaglio transfer press.
The~conical transfer is impressed~onto the surface of the :! , `:
`! 20 soft contact lens~from whlch water is wiped out in order to transfer the ink of the~letters or symbols to the surface of ~ the~soft~contact lens.~The resul-tlng lens is then subjected `~ to irradlation of ultrav~lolet~ ray~to make the UV ink insoluble. ;
~The~stamping may be carried out on the soft contac~
lens in dry state. But in this case, the ink is adhered ;~
., ~ ' .
.. ~ ., .,,, : ..," ., .:
~,.'; ,' ~ :.................... ' 15~7 :.
only onto the superficies of soft contact lens. However, ; soft contact lenses are used in the swelling state with water.
~-i Accordingly, the print carried out in the dry state may be peelled off because of the strain due to the swelling with water, and the letters or symbols printed may be deformed in the swelling state. Therefore, stamping is preferably ; carried out in the state of swelling, because the ink will -be able to penetrate inside the lens to some extent, so that `~ the letters or symbols printed are made more stable. One ~ ~ -method for bringing to the swelling state is that the lens is once removed from the isotonic sodium chloride solution - into a distilled water or ethanol in order to increase the - swelling degree thereof temporalily, and~then is printed.
Preferable prlnting position is 1 - 2 mm inside from - 15 the edge of the convex surface of the lens, because no - ;influence is yielded~to eye sight and wear feeling of the wearer by the printing and no print can be visible by viewers.
According to the method of this invention, minute f letters or symbols which can represent necessary characte-; 20 rlstics, for example, name of manufacturer, vairous kinds of dimension such as base-curve, diameter, diopters, or production lot number, front side and back side etc. can be distinctly and durably pTinted on soft contact lenses.
It is clear that such lenses are by far more convenient ~3 25 than prior lenses with no print of those letters or symbols.
., .
., .'`','. .
:
: . . - -: : '. ` - : .. ~:
1. _ Field_of the Invention This invention relates to a method for distinctly ànd durably printing minute letters or symbols on the ` 15 surfaco of a soft contact lens.
.. ; . ~ .
~'~!, 2~ Description of the Prior Art ~; Soft contact lenses made from a hydrophilic thermo-plastic resin ha~e been developed recently. They are better than hard contact lenses in the good wear feeling and the .
`20 -considerable long time wearability given from the first '` wearing day. Therefore, soft contact lenses have been .. .
- replacing hard contact lenses. Many companies have produced ., various kinds of contact lenses of their own. But, these . ~ .
., . ~ '',` '' r 1 ~
.~'. ' -:
;~
~ ' "''':
.
5~7 contact lenses are so similar on~ another in the shape that even specialists of the maker can hardly differentiate their own product from others. Wearers can hardly tell between the left one and right one of a pair, and between the front and back of a lens, especially a thin lens, because soft contact lenses are so soft that the front is easily turned over to the back and vice versa. Therefore, lt is considered to be very significant for the sake of overcoming above said problems to mark on the surface of soft contact lenses. However, soft contact lenses easily get wet because of their hydrophilic property, so that there has been heretofore no effective method for distinctly and durably printing such minute letters or symbols as being printed on a marginal area of the surface of soft contact lens.
SUMMAP~Y OF THE INVENTION
It is an object of the present invention to provide a method for distinctly and durably printing minute letters or symbols on the surface of soft contact lenses.
.... . .
In one particular aspect the present invention provides a method of printing soft contact lenses with identifying - ind~cia, comprising the steps of:
~-. (a) causing the soft contact lens to swell by immersion i in a swelling agent selected from the group consisting of water and hydrophilic solvents;
(b) wiping the surface oE the soft contact lens in at ~, least the area to be printed to remove excess swelling agent;
; (c) stamping the prepared surface of the soft contact lens with identifying indicia comprised of an aqueous solution or paste of a light resistlve coloring composition hardenable by ultraviolet radiation; and (d) hardening said composition by application of ultraviolet radiation.
;` ' ~'' .
: . . . . . . .
~9iS~7 I
DETAII.ED DESCRIPTION OF THE PREFERR~D EMBODIMENTS
The light sensiti~e coloring composition of this invention includes all of known composition which contains a coloring component and is hardened by the photo polymeriza-tion reaction caused by irradiation of ultraviolet ray, andalso may include even unknown compositions which con~ain ` a coloring componen~ and are hardened by the photo polymeriza-tion reaction.
The following examples are presented in order to ` 10 illustrate the practice of the method of this invention.
Powdered light sensitive dye composition (Product of Toppan Printing Co., Ltd.) is dissolved in water in an amount ` of 5 - 30 wt.%. Ethylene glycol, glycerine, polyvinyl alcohol ~-or polyvinyl pyrrolidone is preferably added thereto in an ~ -amount of 5 - 20 wt.~, because the addition can prevent vaporization of water from the solution, so that the solution can be available for a long period of time. Thus prepared solution is soaked into a porous rubber stamp graved with necessary letters or symbols. The stamp is wiped to remove ` 20 excessive solution from the surface, and then impressed evenly to the surface of a soft contact lens. The soft contact lens to be stamped is taken out of the isotonic -.,sodium chloride solution, and wiped to remove the solution from the surface, and placed on a table to be stamped.
; 25 One stamping is kept for several seconds. I`hus, successive ,.,~ , ~ - 3 -:.
I
~ ~0915~7 ,.
,' stampings are feasible dozens of time without any spread of the solution on the surface of lens. The workability is very good. The stamped soft contact lens is irradiated - with ultraviolet ray by a ultraviolet lamp, so that the solution adhered on the surface by the stamping is color developed and becomes insoluble. The one beca~lle insoluble ~` is no longer dissolved and spread around on the surface by the following boiling in water or chemical treatments thereof, - so that the minute letters or symbols printed on the surface ~ ~.
-~ 10 of the soft contact lens are kept permanently as it is. ;
- Another method is cited whlch comprises using one of UV inks by the use of an intaglio transfer press. An intagll~o plate made of~c~opper or glass on which the letters or symbols are engraved i5 covered wlth~the~UV ink paste ~ and is.squeezed by a spatula to remain~the UV lnk paste only in the engraved part of the plate, Then~ the remained UV
.-, : : , ink pas~te is transferred to the conical transfer made of - a~sillcone resin or gelatin in the intaglio transfer press.
The~conical transfer is impressed~onto the surface of the :! , `:
`! 20 soft contact lens~from whlch water is wiped out in order to transfer the ink of the~letters or symbols to the surface of ~ the~soft~contact lens.~The resul-tlng lens is then subjected `~ to irradlation of ultrav~lolet~ ray~to make the UV ink insoluble. ;
~The~stamping may be carried out on the soft contac~
lens in dry state. But in this case, the ink is adhered ;~
., ~ ' .
.. ~ ., .,,, : ..," ., .:
~,.'; ,' ~ :.................... ' 15~7 :.
only onto the superficies of soft contact lens. However, ; soft contact lenses are used in the swelling state with water.
~-i Accordingly, the print carried out in the dry state may be peelled off because of the strain due to the swelling with water, and the letters or symbols printed may be deformed in the swelling state. Therefore, stamping is preferably ; carried out in the state of swelling, because the ink will -be able to penetrate inside the lens to some extent, so that `~ the letters or symbols printed are made more stable. One ~ ~ -method for bringing to the swelling state is that the lens is once removed from the isotonic sodium chloride solution - into a distilled water or ethanol in order to increase the - swelling degree thereof temporalily, and~then is printed.
Preferable prlnting position is 1 - 2 mm inside from - 15 the edge of the convex surface of the lens, because no - ;influence is yielded~to eye sight and wear feeling of the wearer by the printing and no print can be visible by viewers.
According to the method of this invention, minute f letters or symbols which can represent necessary characte-; 20 rlstics, for example, name of manufacturer, vairous kinds of dimension such as base-curve, diameter, diopters, or production lot number, front side and back side etc. can be distinctly and durably pTinted on soft contact lenses.
It is clear that such lenses are by far more convenient ~3 25 than prior lenses with no print of those letters or symbols.
., .
., .'`','. .
:
: . . - -: : '. ` - : .. ~:
Claims
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A method of printing soft contact lenses with identifying indicia, comprising the steps of:
(a) causing the soft contact lens to swell by immersion in a swelling agent selected from the group consisting of water and hydrophilic solvents;
(b) wiping the surface of the soft contact lens in at least the area to be printed to remove excess swelling agent;
(c) stamping the prepared surface of the soft contact lens with identifying indicia comprised of an aqueous solution or paste of a light resistive coloring composition hardenable by ultraviolet radiation; and (d) hardening said composition by application of ultraviolet radiation.
(a) causing the soft contact lens to swell by immersion in a swelling agent selected from the group consisting of water and hydrophilic solvents;
(b) wiping the surface of the soft contact lens in at least the area to be printed to remove excess swelling agent;
(c) stamping the prepared surface of the soft contact lens with identifying indicia comprised of an aqueous solution or paste of a light resistive coloring composition hardenable by ultraviolet radiation; and (d) hardening said composition by application of ultraviolet radiation.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP124100/1977 | 1977-10-18 | ||
| JP12410077A JPS5458508A (en) | 1977-10-18 | 1977-10-18 | Method of printing on soft contact lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1091507A true CA1091507A (en) | 1980-12-16 |
Family
ID=14876917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA312,884A Expired CA1091507A (en) | 1977-10-18 | 1978-10-06 | Method of printing soft contact lenses |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS5458508A (en) |
| AU (1) | AU523306B2 (en) |
| CA (1) | CA1091507A (en) |
| DE (1) | DE2845374A1 (en) |
| FR (1) | FR2406513A1 (en) |
| GB (1) | GB2006114B (en) |
| IT (1) | IT1099942B (en) |
| NL (1) | NL177902C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4704017A (en) * | 1984-04-16 | 1987-11-03 | Schering Corporation | Process for manufacturing colored contact lenses |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4238524A (en) * | 1978-03-06 | 1980-12-09 | American Optical Corporation | Process for identification marking clear plastic articles |
| JPS58104286A (en) * | 1981-12-16 | 1983-06-21 | ジェイエスアール株式会社 | Production of colored molded product |
| DE3219890A1 (en) * | 1982-05-27 | 1983-12-01 | Toyo Contact Lens Co., Ltd., Nagoya, Aichi | Method of marking soft contact lenses |
| US4629285A (en) * | 1984-02-21 | 1986-12-16 | Fusion Uv Curing Systems Corporation | Color coded optical fiber waveguides and method for coloring same |
| EP0177606A4 (en) * | 1984-04-06 | 1988-02-08 | Barnes Hind Inc | Tinting contact lenses. |
| IL77453A (en) * | 1985-01-04 | 1992-09-06 | Schering Corp | Colored contact lenses and method for making same |
| JPH0125932Y2 (en) * | 1985-05-29 | 1989-08-03 | ||
| US6201037B1 (en) | 1986-01-28 | 2001-03-13 | Ophthalmic Research Group International, Inc. | Plastic lens composition and method for the production thereof |
| US6730244B1 (en) | 1986-01-28 | 2004-05-04 | Q2100, Inc. | Plastic lens and method for the production thereof |
| US5415816A (en) | 1986-01-28 | 1995-05-16 | Q2100, Inc. | Method for the production of plastic lenses |
| US4719657A (en) * | 1986-03-27 | 1988-01-19 | Bausch & Lomb Incorporated | Method of forming iris variegation patterns on contact lenses |
| JPS62288812A (en) * | 1986-06-07 | 1987-12-15 | Nippon Contact Lens:Kk | Marking method for contact lens |
| BR9007801A (en) | 1989-11-01 | 1992-09-01 | Schering Corp | VERY NATURAL COLORED CONTACT LENS |
| FR2667073B1 (en) * | 1990-09-25 | 1994-05-06 | Essilor Internal Cie Gle Optique | METHOD FOR MARKING ARTICLES OF TRANSPARENT ORGANIC MATERIAL SUCH AS CONTACT LENSES. |
| 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 |
| US5936704A (en) | 1997-12-22 | 1999-08-10 | Gabrielian; Grant | Marked contact lens bearing optical marking element |
| JPH11223705A (en) * | 1998-02-05 | 1999-08-17 | Hoya Corp | Optical-lens coloring system |
| US6203156B1 (en) | 1998-03-31 | 2001-03-20 | Johnson & Johnson Vision Care, Inc. | Contact lenses bearing marks |
| US6024448A (en) * | 1998-03-31 | 2000-02-15 | Johnson & Johnson Vision Products, Inc. | Contact lenses bearing identifying marks |
| US6827440B2 (en) | 2000-01-03 | 2004-12-07 | Wesley Jessen Company | Colored contact lens with a more natural appearance |
| KR101094068B1 (en) * | 2011-10-19 | 2011-12-15 | 유병호 | Method for manufacturing three dimensions lens film |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1583492A (en) * | 1976-06-24 | 1981-01-28 | Toppan Printing Co Ltd | Method of dyeing or printing hydrogel resin |
-
1977
- 1977-10-18 JP JP12410077A patent/JPS5458508A/en active Pending
-
1978
- 1978-10-06 CA CA312,884A patent/CA1091507A/en not_active Expired
- 1978-10-12 AU AU40665/78A patent/AU523306B2/en not_active Expired
- 1978-10-16 FR FR7829401A patent/FR2406513A1/en active Granted
- 1978-10-17 NL NLAANVRAGE7810414,A patent/NL177902C/en not_active IP Right Cessation
- 1978-10-18 DE DE19782845374 patent/DE2845374A1/en not_active Withdrawn
- 1978-10-18 IT IT28866/78A patent/IT1099942B/en active
- 1978-10-18 GB GB7841077A patent/GB2006114B/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4704017A (en) * | 1984-04-16 | 1987-11-03 | Schering Corporation | Process for manufacturing colored contact lenses |
Also Published As
| Publication number | Publication date |
|---|---|
| NL177902B (en) | 1985-07-16 |
| AU523306B2 (en) | 1982-07-22 |
| IT1099942B (en) | 1985-09-28 |
| AU4066578A (en) | 1980-04-17 |
| GB2006114A (en) | 1979-05-02 |
| FR2406513A1 (en) | 1979-05-18 |
| IT7828866A0 (en) | 1978-10-18 |
| FR2406513B1 (en) | 1980-07-18 |
| JPS5458508A (en) | 1979-05-11 |
| NL177902C (en) | 1985-12-16 |
| GB2006114B (en) | 1982-02-24 |
| DE2845374A1 (en) | 1979-04-19 |
| NL7810414A (en) | 1979-04-20 |
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