JPH0567932B2 - - Google Patents
Info
- Publication number
- JPH0567932B2 JPH0567932B2 JP60063876A JP6387685A JPH0567932B2 JP H0567932 B2 JPH0567932 B2 JP H0567932B2 JP 60063876 A JP60063876 A JP 60063876A JP 6387685 A JP6387685 A JP 6387685A JP H0567932 B2 JPH0567932 B2 JP H0567932B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- symbol
- lens
- manufacturing
- concave
- 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 - Fee Related
Links
- 238000000034 method Methods 0.000 claims description 22
- 238000004519 manufacturing process Methods 0.000 claims description 14
- 238000006116 polymerization reaction Methods 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 230000003068 static effect Effects 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 6
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011550 stock solution Substances 0.000 description 4
- KOMNUTZXSVSERR-UHFFFAOYSA-N 1,3,5-tris(prop-2-enyl)-1,3,5-triazinane-2,4,6-trione Chemical compound C=CCN1C(=O)N(CC=C)C(=O)N(CC=C)C1=O KOMNUTZXSVSERR-UHFFFAOYSA-N 0.000 description 2
- LTHJXDSHSVNJKG-UHFFFAOYSA-N 2-[2-[2-[2-(2-methylprop-2-enoyloxy)ethoxy]ethoxy]ethoxy]ethyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCCOCCOCCOCCOC(=O)C(C)=C LTHJXDSHSVNJKG-UHFFFAOYSA-N 0.000 description 2
- DBCAQXHNJOFNGC-UHFFFAOYSA-N 4-bromo-1,1,1-trifluorobutane Chemical compound FC(F)(F)CCCBr DBCAQXHNJOFNGC-UHFFFAOYSA-N 0.000 description 2
- WHNWPMSKXPGLAX-UHFFFAOYSA-N N-Vinyl-2-pyrrolidone Chemical compound C=CN1CCCC1=O WHNWPMSKXPGLAX-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- STVZJERGLQHEKB-UHFFFAOYSA-N ethylene glycol dimethacrylate Substances CC(=C)C(=O)OCCOC(=O)C(C)=C STVZJERGLQHEKB-UHFFFAOYSA-N 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 1
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 235000016496 Panda oleosa Nutrition 0.000 description 1
- 240000000220 Panda oleosa Species 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920002338 polyhydroxyethylmethacrylate Polymers 0.000 description 1
- -1 polysiloxane Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000005297 pyrex Substances 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- G02C7/04—Contact lenses for the eyes
Landscapes
- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Eyeglasses (AREA)
Description
【発明の詳細な説明】
〔技術分野〕
本発明は識別標識を有するコンタクトレンズの
製造方法に関する。さらに詳しくは、眼の中に入
れても違和感がない程度に小さな記号でありなが
ら、光線の反射具合により明瞭な識別標識を有す
るコンタクトレンズの製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a method of manufacturing contact lenses having identification marks. More specifically, the present invention relates to a method for manufacturing a contact lens that has an identification mark that is small enough to cause no discomfort when placed in the eye, but that is clearly identified by the way light is reflected.
ソフトコンタクトレンズまたはハードコンタク
トレンズは小さなものであり、しかも眼の中に入
れるものであるので、識別標識を刻印することが
困難であつた。
Since soft or hard contact lenses are small and are inserted into the eye, it has been difficult to imprint identification marks on them.
しかし識別標識がないと、工場で製造し、検査
し、出荷する際に混同による混乱を起こしたり、
小売店や、使用者も混同を生ずることがある。 However, without identification marks, confusion may occur due to confusion during manufacturing, inspection, and shipping at the factory.
Retailers and users can also cause confusion.
そこで従来よりコンタクトレンズに識別マーク
を入れることが検討されている。 Therefore, consideration has been given to adding identification marks to contact lenses.
例えば紫外線を照射して感光性樹脂を溶解する
方法（特開昭50−120642号公報）、感光性染料に
よる印刷を用いる方法（特開昭54−58508号公
報）、刻印する方法（特公昭53−2692号公報）感
光樹脂を塗り、紫外線を照射することにより凸状
マークを形成した成形金型を用いる方法（特開昭
53−10447号公報）等が知られている。 For example, a method of dissolving a photosensitive resin by irradiating it with ultraviolet rays (Japanese Patent Publication No. 50-120642), a method using printing with photosensitive dye (Japanese Patent Application Laid-Open No. 54-58508), and a method of engraving (Japanese Patent Publication No. 53-1989) -2692 Publication) A method using a mold in which a convex mark is formed by coating a photosensitive resin and irradiating it with ultraviolet light (Japanese Patent Laid-Open Publication No. 2692)
53-10447) etc. are known.
しかしながらこれらの公知例では、いずれもレ
ンズ表面より窪んだ凹形のマークを付与するもの
であつたので、水や涙で濡れていると判別しにく
いという欠点があつた。また感光性樹脂などレン
ズにとつて必ずしも必要のない樹脂を使用しなけ
ればならず、素材上からも困難な点があつた。 However, in all of these known examples, a concave mark recessed from the lens surface is provided, which has the disadvantage that it is difficult to distinguish when the lens is wet with water or tears. In addition, it was necessary to use resins such as photosensitive resins that were not necessarily necessary for lenses, which caused difficulties in terms of materials.
上記従来技術の欠点を改善するため、本発明は
レンズの表面に突出した形の識別マークを付与す
る技術を提供する。すなわち眼の中に入れても違
和感がない程度に小さな記号でありながら、光線
の反射具合により明瞭な識別標識を有するコンタ
クトレンズの製造方法を提供する。
In order to improve the above-mentioned drawbacks of the prior art, the present invention provides a technique for providing a protruding identification mark on the surface of a lens. That is, the present invention provides a method for manufacturing a contact lens that has an identification mark that is small enough to cause no discomfort even when placed in the eye, but that is clearly identified by the way light is reflected.
上記目的を達成するため、本発明は下記の構成
からなる。
In order to achieve the above object, the present invention consists of the following configuration.
(1) 凸鋳型と凹鋳型を用いてスタテイツクキヤス
ト重合方法でコンタクトレンズを製造する方法
において、凹鋳型としてレンズの周辺に当る部
分に、１記号が３mm2以下の大きさで、かつ記号
の突起高さが25ミクロン以下である記号をレー
ザー光照射により刻印した鋳型を用いることを
特徴とするコンタクトレンズの製造方法。(1) In the method of manufacturing contact lenses by the static cast polymerization method using a convex mold and a concave mold, a symbol with a size of 3 mm 2 or less and a symbol of A method for manufacturing a contact lens characterized by using a mold in which a symbol having a protrusion height of 25 microns or less is engraved by laser beam irradiation.
以下図面を用いて説明する。 This will be explained below using the drawings.
第１図Ａは本発明のコンタクトレンズの１実施
態様の平面図、第１図Ｂは同断面図を示す。 FIG. 1A shows a plan view of one embodiment of the contact lens of the present invention, and FIG. 1B shows a cross-sectional view of the same.
レンズ１の周辺部に識別記号２が設けられてい
る。周辺部に設けたのは、レンズ装着の際、光学
的なゆがみを眼に与えないためである。そして記
号は凸状であることが特徴である。凸状である
と、光線の反射が大きく異なり、小さな記号であ
つても判別し易い。 An identification symbol 2 is provided on the periphery of the lens 1. The reason why it is provided at the periphery is to prevent optical distortion from being caused to the eye when the lens is attached. The symbol is characterized by its convex shape. If the shape is convex, the reflection of light rays will be greatly different, making it easy to distinguish even small symbols.
また記号は、１記号が３mm2以下の大きさで、か
つ記号の突起高さが25ミクロン以下であることが
必要である。１つの記号があまりに大きいと、眼
に歪みを与え、また大きな記号は不必要であるこ
とにもよる。凸状記号の突起高さは、余りに高い
と眼に違和感を与えて好ましくない。以上の範囲
の記号であれば、記号の数は問わない。なお記号
とは、アルフアベツト、カナ、数字などいかなる
ものであつてもよい。 Additionally, the size of each symbol must be 3 mm 2 or less, and the protrusion height of the symbol must be 25 microns or less. This is because if a single symbol is too large, it causes distortion to the eye, and large symbols are unnecessary. If the height of the protrusion of the convex symbol is too high, it may give a sense of discomfort to the eyes, which is undesirable. The number of symbols does not matter as long as they are within the above range. Note that the symbol may be anything such as alphanumeric characters, kana characters, numbers, etc.
本発明のコンタクトレンズとは、例えばポリビ
ニルピロリドンを主成分とする高含水ソフトコン
タクトレンズやポリヒドロキシエチルメタアクリ
レートを主成分とする低含水ソフトコンタクトレ
ンズがあげられる。またポリシロキサン結合を有
するハードコンタクトレンズでももちろん有効で
あり、ほかにシロキサン結合とウレタン結合を有
する酸素透過性のコンタクトレンズなどその種類
は問わない。この中で製造工程上の理由から特に
有効なのはソフトコンタクトレンズである。 The contact lenses of the present invention include, for example, high water content soft contact lenses containing polyvinylpyrrolidone as a main component and low water content soft contact lenses containing polyhydroxyethyl methacrylate as a main component. Of course, hard contact lenses having polysiloxane bonds are also effective, and any other types of contact lenses, such as oxygen-permeable contact lenses having siloxane bonds and urethane bonds, do not matter. Among these, soft contact lenses are particularly effective for manufacturing process reasons.
次に本発明方法について説明する。 Next, the method of the present invention will be explained.
本発明方法においては、凸鋳型と凹鋳型を用い
てスタテイツクキヤスト重合で製造することが必
要である。これはボタン法などのように、切削が
必要なく、効率よく製造できるとともに、精密な
レンズが作れるからである。なおスタテイツクキ
ヤスト重合とは、第２図に示すとおり凸鋳型１１
と凹鋳型１２を用いてこの中に重合溶液を充填
し、静置状態で注型重合する方法をいう。 In the method of the present invention, it is necessary to produce by static cast polymerization using a convex mold and a concave mold. This is because unlike the button method, cutting is not required, and it is possible to manufacture efficiently and to produce precise lenses. Static cast polymerization refers to static cast polymerization using a convex mold 11 as shown in Fig. 2.
This refers to a method in which a concave mold 12 is used, a polymerization solution is filled into the mold, and the polymerization is performed by casting in a stationary state.
そして、凹鋳型としてレンズの周辺に当る部分
に、１記号が３mm2以下の大きさで、かつ信号の突
起高さが25ミクロン以下である記号を刻印した金
型を用いることが必要である。そして好ましくは
１記号の大きさは１mm2以下、突起高さは10ミクロ
ン以下である。凹鋳型の転写によつてレンズに好
ましい記号を入れるためである。１３はかかる刻
印を示す。 Then, it is necessary to use a concave mold in which a symbol is engraved in the area corresponding to the periphery of the lens, each symbol having a size of 3 mm 2 or less and a signal protrusion height of 25 microns or less. Preferably, the size of one symbol is 1 mm 2 or less, and the protrusion height is 10 microns or less. This is to put a desirable symbol on the lens by transferring the concave mold. 13 indicates such a marking.
凹鋳型は金属、プラスチツク、ガラスなどいか
なるものでもよいが、好ましくは石英ガラス、高
純度シリカガラスまたはセラミツクスである。こ
れは精密な重合ができるため、および不純物など
が溶出しないためである。 The concave mold may be made of any material such as metal, plastic, or glass, but is preferably made of quartz glass, high-purity silica glass, or ceramics. This is because precise polymerization is possible and impurities are not eluted.
また刻印は、レーザー光照射処理により溶融す
る方法が用いられる。微細な記号を精度よく入れ
ることができるためである。レーザー光照射処理
は、例えば薄い金属板に記号が型抜きしてあるマ
スクを用い、これを通じてレーザー光をシヨツト
する。刻印の深さは、レーザー光の強さとシヨツ
ト回数により設定することができる。 Further, a method of melting the stamp by laser beam irradiation treatment is used. This is because minute symbols can be inserted with high precision. The laser beam irradiation process uses, for example, a mask in which symbols are cut out from a thin metal plate, and the laser beam is shot through this mask. The depth of the marking can be set by the intensity of the laser beam and the number of shots.
実施例 １
干渉球面を有する凸鋳型（中心部曲率半径R1
＝5.8mm）と干渉球面（周辺部に突起５がある）
を有する凹鋳型（中心部曲率半径R2＝5.8mm、内
直径Ｓ＝10mm）とを用いて、ソフトコンタクトレ
ンズを製造した。凹鋳型と凸鋳型との間の空間の
中心部の厚さＴは0.2mmであつて、凸凹鋳型のい
ずれも高純度シリカガラス“パイレツクス”（商
品名）から切削研磨法で製作した。そして鋳型の
周辺部に、加熱下でレーザー光線を照射し、記号
の大きさは一辺が約0.5mm、突起高さ５ミクロン
とした。
Example 1 Convex mold with interference spherical surface (center radius of curvature R 1
= 5.8mm) and interference spherical surface (with protrusion 5 on the periphery)
A soft contact lens was manufactured using a concave mold (center radius of curvature R 2 =5.8 mm, inner diameter S = 10 mm). The thickness T of the center of the space between the concave mold and the convex mold was 0.2 mm, and both of the concave and convex molds were manufactured from high-purity silica glass "Pyrex" (trade name) by cutting and polishing. The surrounding area of the mold was then irradiated with a laser beam under heating, and the size of the symbol was approximately 0.5 mm on each side and the protrusion height was 5 microns.
重合原液は下記のものを用いた。 The following polymerization stock solution was used.
２−ヒドロキシエチルメタクリレート（HEMA）
100ｇ
エチレングリコールジメタクリレート
（EGDMA） 0.1ｇ
アゾビスイソブチロニトリル（AIBN） 0.3ｇ
原液を凹鋳型にあふれるほどに入れ、凸鋳型を
乗せた。気泡をまきこむことはほとんどなかつ
た。凸凹鋳型組立物をクランプではさみ、空気槽
で加熱した。はじめ20Kgｆでしめつけ60℃で0.5
時間保ち、次に80Kgｆに増じめ100℃で1.5時間保
つた。室温まで放冷したあとクランプをはずし
た。凸凹鋳型を引離すと、多くの場合レンズは凹
鋳型に付着した。鋳型に残つたレンズは鋳型との
間にかすかなすきまが出来ている場合が多いの
で、真空を利用して吸取ることができた。吸取れ
ぬものは、鋳型を指で強圧して変形すると吸取る
ことができた。レンズを水中で１時間煮沸したと
ころ、透明な含水ソフトコンタクトレンズとなつ
た。2-Hydroxyethyl methacrylate (HEMA)
100g ethylene glycol dimethacrylate (EGDMA) 0.1g azobisisobutyronitrile (AIBN) 0.3g The stock solution was poured into a concave mold until it overflowed, and a convex mold was placed on it. There were almost no air bubbles. The uneven mold assembly was held between clamps and heated in an air bath. Tighten at 20Kgf at first and 0.5 at 60℃.
The temperature was then increased to 80 kgf and kept at 100°C for 1.5 hours. After cooling to room temperature, the clamp was removed. When the concave and concave molds were pulled apart, the lenses often adhered to the concave molds. Lenses left in the mold often have a slight gap between them, so we were able to use a vacuum to suck them out. What could not be absorbed could be absorbed by pressing the mold with one's fingers to deform it. When the lens was boiled in water for 1 hour, it became a transparent, water-containing soft contact lens.
鋳型から取出した含水していないレンズの引張
強度は50Kgｆ／cm2以上、含水レンズの含水率37
％、含水ンズの光透過率（全厚に対する、以下と
同じ）90％、含水レンズの引張強度８Kgｆ／cm2で
あつた。識別記号は明瞭であり、工場検査や販売
店で混同することはなかつた。 The tensile strength of the non-water-containing lens removed from the mold is 50Kgf/ cm2 or more, and the water content of the water-containing lens is 37.
%, the light transmittance of the water-containing lens (relative to the total thickness, same as below) was 90%, and the tensile strength of the water-containing lens was 8 Kgf/cm 2 . The identification symbols were clear and there was no confusion during factory inspections or at dealers.
実施例 ２
中心部曲率半径R1＝6.0mmであつて回転方物面
に近い形の非干渉面を有する凸凹鋳型を石英ガラ
スから研磨法で製作した。この凹鋳型を実施例１
で用いたと同じ方法で刻印した。そして実施例１
と同様にソフトコンタクトレンズを製造した。Example 2 A convex-concave mold having a center radius of curvature R 1 =6.0 mm and a non-interference surface shaped like a paraboloid of rotation was manufactured from quartz glass by a polishing method. Example 1 of this concave mold
It was engraved using the same method used. And Example 1
Soft contact lenses were manufactured in the same manner.
原液としては下記の組成のものを用いた。 The stock solution used had the following composition.
Ｎ−ビニルピロリドン（NVP） ……70ｇ
メチルメタクリレート（MMA） ……30ｇ
テトラエチレングリコールジメタクリレート
（TEGDMA） ……0.05ｇ
トリアリルイソシアヌレート（TAIC） ……0.1ｇ
AIBN ……0.03ｇ
実施例１と同じように原液を鋳型に充填し、10
Kgｆの力で100℃、0.5時間のあと30Kgｆ、120℃、
1.5時間で重合させ、熱いうちに凹凸鋳型を引離
した。多くの場合レンズは凸鋳型に強力に付着し
ていた。凸鋳型の表面が非常に清浄な場合は、冷
却しても決してとれない程付着力は強かつた。レ
ンズが取れない場合は、そのまま水に３時間浸漬
するとその間に自然に離れた。透明な含水ソフト
コンタクトレンズが得られた。N-vinylpyrrolidone (NVP)...70g Methyl methacrylate (MMA)...30g Tetraethylene glycol dimethacrylate (TEGDMA)...0.05g Triallyl isocyanurate (TAIC)...0.1g AIBN...0.03g Example 1 and Fill the mold with the stock solution in the same way, and
100℃ with Kgf force, 0.5 hours, then 30Kgf, 120℃,
Polymerization took place for 1.5 hours, and the uneven mold was separated while still hot. In many cases the lenses were strongly attached to the convex mold. If the surface of the convex mold was very clean, the adhesion was so strong that it could never be removed even after cooling. If the lens cannot be removed, just soak it in water for 3 hours and it will separate naturally during that time. A transparent hydrous soft contact lens was obtained.
鋳型から取出した含水していないレンズの引張
強度は50Kgｆ／cm2、含水レンズの含水率68％、含
水レンズの光透過率90％（95％／0.1mm）含水レ
ンズの引張強度12Kgｆ／cm2であつた。 The tensile strength of the non-hydrated lens taken out from the mold is 50 Kgf/cm 2 , the water content of the hydrated lens is 68%, the light transmittance of the hydrated lens is 90% (95%/0.1mm), and the tensile strength of the hydrated lens is 12 Kgf/cm 2 It was hot.
得られたレンズは識別標識がルーペではつきり
わかり、実施例１と同じく扱い易いものであつ
た。 The identification mark on the obtained lens was clearly visible with a magnifying glass, and it was easy to handle as in Example 1.
得られたレンズを着用テストしたところ、兎眼
において２週間の連続装着が可能であつた。 When the obtained lens was subjected to a wear test, it was possible to wear it continuously for two weeks in case of lagophthalmia.
本発明はレンズの表面に突出した形の識別マー
クを付与するので、光線の反射具合により明瞭な
識別標識を有する。また眼の中に入れても違和感
がない程度に小さな記号であるので、着用性がよ
い、そのほか下記の効果を奏する。
Since the present invention provides a protruding identification mark on the surface of the lens, the identification mark becomes clearer due to the degree of reflection of light rays. Furthermore, since the symbol is small enough that it does not feel uncomfortable when placed inside the eye, it is easy to wear and has the following effects.
着用者が装用するレンズの左右の判別が容易
となる。 It becomes easy to distinguish between the left and right lenses worn by the wearer.
装用後レンズの動きなどスリツトランプを通
して容易に判る。 After wearing, you can easily see the movement of the lens through a slit lamp.
製造工程において混同がなくなり、品質管理
が容易となる。 This eliminates confusion in the manufacturing process and facilitates quality control.
刻印された記号は永久的に残り、耐久性がよ
い。 The engraved symbol remains permanently and is durable.
第１図Ａは本発明の製造方法によつて得られる
コンタクトレンズの１実施態様の平面図、第１図
Ｂは同断面図を示す。第２図は本発明方法の好ま
しい実施態様を示す。
１；レンズ、２；識別記号、１１；凸鋳型、１
２；凹鋳型、１３；刻印。
FIG. 1A is a plan view of one embodiment of a contact lens obtained by the manufacturing method of the present invention, and FIG. 1B is a sectional view thereof. FIG. 2 shows a preferred embodiment of the method of the invention. 1; Lens, 2; Identification symbol, 11; Convex mold, 1
2; Concave mold, 13; Engraved.
Claims (1)
ト重合方法でコンタクトレンズを製造する方法に
おいて、凹鋳型としてレンズの周辺に当る部分
に、１記号が３mm2以下の大きさで、かつ記号の突
起高さが25ミクロン以下である記号を、レーザー
光照射により刻印した鋳型を用いることを特徴と
するコンタクトレンズの製造方法。 ２ 凹鋳型が石英ガラス、高純度シリカガラスま
たはセラミツクスであることを特徴とする特許請
求の範囲第１項記載のコンタクトレンズの製造方
法。 ３ 刻印がレーザー光照射処理による溶融、また
は切削であることを特徴とする特許請求の範囲第
１項記載のコンタクトレンズの製造方法。[Claims] 1. In a method of manufacturing contact lenses by a static cast polymerization method using a convex mold and a concave mold, a symbol 1 with a size of 3 mm 2 or less is placed on the periphery of the lens as the concave mold. , and the protrusion height of the symbol is 25 microns or less. A method for manufacturing a contact lens characterized by using a mold in which a symbol is engraved by laser beam irradiation. 2. The method for manufacturing a contact lens according to claim 1, wherein the concave mold is made of quartz glass, high-purity silica glass, or ceramics. 3. The method for manufacturing a contact lens according to claim 1, wherein the marking is performed by melting or cutting by laser beam irradiation treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6387685A JPS61223820A (en) | 1985-03-29 | 1985-03-29 | Contact lens and its manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6387685A JPS61223820A (en) | 1985-03-29 | 1985-03-29 | Contact lens and its manufacture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61223820A JPS61223820A (en) | 1986-10-04 |
| JPH0567932B2 true JPH0567932B2 (en) | 1993-09-27 |
Family
ID=13241933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6387685A Granted JPS61223820A (en) | 1985-03-29 | 1985-03-29 | Contact lens and its manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61223820A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6857744B2 (en) | 2001-09-17 | 2005-02-22 | Menicon Co., Ltd. | Method of marking ophhalmic lens by using laser radiation of femtosecond pulse width |
| JP2005070640A (en) * | 2003-08-27 | 2005-03-17 | Konica Minolta Holdings Inc | Optical element for optical communication module or optical pickup device |
| WO2008081599A1 (en) | 2006-12-28 | 2008-07-10 | Menicon Co., Ltd. | Production method of contact lens with mark and contact lens with mark |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5178800A (en) * | 1990-10-10 | 1993-01-12 | Innotech, Inc. | Method for forming plastic optical quality spectacle lenses |
| WO1991008105A2 (en) * | 1989-12-05 | 1991-06-13 | Blum Ronald D | Method for forming plastic optical quality spectacle lenses |
| GB0002091D0 (en) * | 2000-01-28 | 2000-03-22 | Aspect Vision Care Ltd | Toric lens manufacture |
| US7014316B2 (en) | 2000-02-10 | 2006-03-21 | Matsushita Electric Industrial Co., Ltd. | Optical lens with marking and manufacturing method thereof |
| US8357196B2 (en) | 2009-11-18 | 2013-01-22 | Abbott Medical Optics Inc. | Mark for intraocular lenses |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5310447A (en) * | 1976-07-16 | 1978-01-30 | Nippon Contact Lense | Method of forming mark on mold |
-
1985
- 1985-03-29 JP JP6387685A patent/JPS61223820A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5310447A (en) * | 1976-07-16 | 1978-01-30 | Nippon Contact Lense | Method of forming mark on mold |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6857744B2 (en) | 2001-09-17 | 2005-02-22 | Menicon Co., Ltd. | Method of marking ophhalmic lens by using laser radiation of femtosecond pulse width |
| US6997554B2 (en) | 2001-09-17 | 2006-02-14 | Menicon Co., Ltd. | Method of marking ophthalmic lens by using laser radiation |
| JP2005070640A (en) * | 2003-08-27 | 2005-03-17 | Konica Minolta Holdings Inc | Optical element for optical communication module or optical pickup device |
| WO2008081599A1 (en) | 2006-12-28 | 2008-07-10 | Menicon Co., Ltd. | Production method of contact lens with mark and contact lens with mark |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61223820A (en) | 1986-10-04 |
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