JP4787884B2 - コンタクトレンズの製造方法 - Google Patents
コンタクトレンズの製造方法 Download PDFInfo
- Publication number
- JP4787884B2 JP4787884B2 JP2008555990A JP2008555990A JP4787884B2 JP 4787884 B2 JP4787884 B2 JP 4787884B2 JP 2008555990 A JP2008555990 A JP 2008555990A JP 2008555990 A JP2008555990 A JP 2008555990A JP 4787884 B2 JP4787884 B2 JP 4787884B2
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- JP
- Japan
- Prior art keywords
- mold
- contact lens
- polymerizable material
- manufacturing
- workpiece
- 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.)
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Classifications
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- 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
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
- B29C41/04—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould
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- 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
- B29D11/00038—Production of contact lenses
- B29D11/00115—Production of contact lenses made by rotational casting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B11/00—Making preforms
- B29B11/06—Making preforms by moulding the material
-
- 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
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
- B29C41/04—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould
- B29C41/042—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould by rotating a mould around its axis of symmetry
- B29C41/047—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould by rotating a mould around its axis of symmetry the mould cavity lying totally outside the axis, e.g. toroidal moulds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2011/00—Optical elements, e.g. lenses, prisms
- B29L2011/0016—Lenses
- B29L2011/0041—Contact lenses
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Ophthalmology & Optometry (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Eyeglasses (AREA)
Description
12 本体部
16 ワークホルダ
18 ワーク
20 開口部
26 内底面
28 アルミシール
30 成形キャビティ
32 重合性モノマー
48 駆動軸部材
49 中心軸
62 空隙
64 液面
66 レンズブランク
72 コンタクトレンズ
Claims (8)
- 成形型の成形キャビティ内に重合性材料を注入して重合せしめることによりレンズブランクを成形し、該レンズブランクを切削加工することによって目的とするコンタクトレンズを得るコンタクトレンズの製造方法において、
前記重合性材料を前記成形キャビティ内に自由表面を有する状態で注入した後に、鉛直方向に延びる回転中心軸に対して前記成形型の底面を外側に向けた状態で該成形型を該回転中心軸回りに回転せしめつつ重合成形することによって前記レンズブランクを成形することを特徴とするコンタクトレンズの製造方法。 - 複数の前記成形型を用いて、それぞれの前記成形キャビティ内に前記重合性材料を注入して、それら複数の成形型を同一の前記回転中心軸回りで同時に回転せしめつつ重合成形する請求項1に記載のコンタクトレンズの製造方法。
- 前記成形型として樹脂、ガラス、金属の何れかで形成されたものを用いる請求項1又は2に記載のコンタクトレンズの製造方法。
- 前記成形型として一方に開口する開口部を有する成形型を用いて、前記重合性材料を該開口部から注入し、覆蓋部材によって前記成形キャビティ内に空隙を有する状態で該開口部を密封状態に覆蓋した後に該重合性材料を重合成形する請求項1乃至3の何れか一項に記載のコンタクトレンズの製造方法。
- 前記成形型として熱可塑性樹脂で形成されたものを用いると共に、該成形型の前記開口部に前記覆蓋部材としてのアルミニウム箔を熱溶着することによって該開口部を密封状態に覆蓋する請求項4に記載のコンタクトレンズの製造方法。
- 前記重合性材料を脱酸素雰囲気中で重合成形する請求項1乃至5の何れか一項に記載のコンタクトレンズの製造方法。
- 前記成形型に対して前記重合性材料に及ぼされる重力よりも遠心力が大きくなる回転速度を与えると共に、該成形型を該重合性材料に及ぼされる重力と遠心力との合力方向に傾斜せしめた状態で回転せしめる請求項1乃至6の何れか一項に記載のコンタクトレンズの製造方法。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2007/051682 WO2008093421A1 (ja) | 2007-02-01 | 2007-02-01 | コンタクトレンズの製造方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPWO2008093421A1 JPWO2008093421A1 (ja) | 2010-05-20 |
JP4787884B2 true JP4787884B2 (ja) | 2011-10-05 |
Family
ID=39673741
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2008555990A Active JP4787884B2 (ja) | 2007-02-01 | 2007-02-01 | コンタクトレンズの製造方法 |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP4787884B2 (ja) |
WO (1) | WO2008093421A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2023120606A1 (ja) * | 2021-12-24 | 2023-06-29 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62111707A (ja) * | 1985-11-11 | 1987-05-22 | Fuji Rubber Kk | 照光表示部の製造方法 |
JP2000343539A (ja) * | 1999-06-08 | 2000-12-12 | Menicon Co Ltd | 多種材コンタクトレンズブランクの成形用型並びに多種材コンタクトレンズブランクの製造方法 |
JP2006171270A (ja) * | 2004-12-15 | 2006-06-29 | Hoya Corp | コンタクトレンズの製造方法 |
-
2007
- 2007-02-01 JP JP2008555990A patent/JP4787884B2/ja active Active
- 2007-02-01 WO PCT/JP2007/051682 patent/WO2008093421A1/ja active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62111707A (ja) * | 1985-11-11 | 1987-05-22 | Fuji Rubber Kk | 照光表示部の製造方法 |
JP2000343539A (ja) * | 1999-06-08 | 2000-12-12 | Menicon Co Ltd | 多種材コンタクトレンズブランクの成形用型並びに多種材コンタクトレンズブランクの製造方法 |
JP2006171270A (ja) * | 2004-12-15 | 2006-06-29 | Hoya Corp | コンタクトレンズの製造方法 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2008093421A1 (ja) | 2010-05-20 |
WO2008093421A1 (ja) | 2008-08-07 |
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