JP2005297225A - 光学部品ユニットのレーザ接合方法および装置 - Google Patents
光学部品ユニットのレーザ接合方法および装置 Download PDFInfo
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- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
- B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
- B29C66/1224—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a butt joint-segment
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- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
- B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
- B29C66/1226—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least one bevelled joint-segment
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- B29C66/00—General aspects of processes or apparatus for joining preformed parts
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- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/65—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles with a relative motion between the article and the welding tool
- B29C66/652—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles with a relative motion between the article and the welding tool moving the welding tool around the fixed article
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- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
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- B29C66/00—General aspects of processes or apparatus for joining preformed parts
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- B29C66/74—Joining plastics material to non-plastics material
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Abstract
【解決手段】 樹脂によって形成された収容部品5の内壁6に沿って収容する凸レンズ8を前記内壁6に固定する光学部品ユニットのレーザ接合方法であって、レーザ照射装置1により長辺が前記内壁6に沿った方向となるレーザラインビーム11を長辺方向に移動させながら前記内壁6に照射し、レーザ照射部の樹脂を局部的な熱溶融によって粘性流動状態となし、この粘性流動状態の樹脂を前記凸レンズ8と前記内壁6との間に押し込める。
【選択図】 図1
Description
ところで、従来ではレーザ溶接の方法によるガラスと樹脂との接合は非常に難しいものと考えられてきた。しかし、例えば、特許文献1に記載するように、最近になってレーザを用いてガラスと樹脂との接合が可能となってきた。この方法はレーザによって樹脂を局部的に熱溶融させて粘性流動状態となし、光学部品と樹脂製収容部品との間に樹脂が押し込められるようにするものである。
これは、光学部品からの内壁上面までの高さが0.5mmの収容部品にレーザラインビームを十分な耐抜け強度が得られるレーザパワーで照射するときに有効であり、ビーム幅が300μm以下とすることで溶融痕(溶融部の幅)が小さくなり、内壁上面よりも溶融痕が盛り上がって他の部品と干渉することが無ない。また、光学部品の下面に対向する収容部品の受け面をレーザ照射することが無く、光学部品の下面の表面に樹脂の分解ガスが付着することが無い。さらに、収容部品の受け面の表面が溶融後固化するときに凹凸が生じることに起因して光学部品間距離が変動して特性の低下を招くことも無い。
前記レンズは、凸レンズであることが好ましい。
前記収容部品は、円筒形状あるいは円筒形状の一部分を省いた形状であることが好ましい。
前記集光光学系は、マスクと対面する2個の凸レンズを具備することが好ましい。
本発明の光学部品のレーザ接合装置は、レーザを照射する内壁の位置を変更するためにレーザ照射手段を移動させる照射位置移動装置を具備することが好ましい。
前記収容部品は、円筒形状あるいは円筒形状の一部分を省いた形状であることが好ましい。
(実施の形態1)
図1は、本実施の形態に係る光学部品固定装置100の構成を示す模式図である。光学部品のレーザ接合装置をなす光学部品固定装置100は、光学部品をなす凸レンズ8が収容された収容部品5を保持する保持部材9を備えている。
レーザ光源3は、収容部品5に形成された内壁6を構成する樹脂を粘性流動状態となし、かつ局所的に分解が起こる状態にすることができる波長810nmのレーザ11を照射する。集光光学系2は、レーザ光源3から出射したレーザ11を収容部品5の内壁6へビーム幅300μm以下のレーザラインビームとするものであり、1個の非球面レンズであることが小型、軽量なため好ましい。集光光学系2は、複数の凸レンズや凹レンズあるいは非球面レンズの組み合わせでも、ビーム幅300μm以下に集光が可能であれば、特に問題は無い。
図3は、本実施の形態にかかる光学部品固定装置100の構成を示す模式図である。図1に示した光学部品固定装置100の構成要素と同一の構成要素には同一の参照符号を付して、その詳細な説明を省略する。
本実施の形態は、図4に示すように、レーザ光源3から照射されたレーザを2組の凸レンズからなる集光光学系2により、収容部品5の内壁6にビーム幅300μm以下の集光されたレーザラインビーム11として照射する以外は、先の実施の形態2と同様である。
本実施の形態においても、凸レンズ8の中心からの120゜等配分位置3箇所を同時にレーザ照射するため、熱変形に伴う位置ずれおよび残留応力を緩和することができ、精度の高いレンズ固定を実現することができる。また、3箇所同時にレーザラインビーム11を照射するため、加工タクトを半減することができる。また、内壁6の上面からの溶融痕の盛り上がりが無いために他の部品との干渉が起こらず、様々な製品に対応することができる。また、受け面13の溶融痕が無いため、受け面13の分解ガスが凸レンズ8の裏面へ付着する不良を防止することが可能となる。さらに、受け面13のレーザ照射による凹凸の発生に起因するレンズ間距離の変動という不良を防止することも可能となる。
2 集光光学系
3 レーザ光源
4 照射位置移動装置
5 収容部品
6 内壁
7 樹脂
8 凸レンズ
9 保持部材
10 集光光学系駆動装置
11 レーザ
12 反力
13 受け面
14 マスク
100 光学部品固定装置
Claims (14)
- 樹脂によって形成された収容部品の内壁に沿って収容する光学部品を前記内壁に固定する光学部品ユニットのレーザ接合方法であって、レーザ照射手段により長辺が前記内壁に沿った方向となるレーザラインビームを長辺方向に移動させながら前記内壁に照射し、レーザ照射部の樹脂を局部的な熱溶融によって粘性流動状態となし、この粘性流動状態の樹脂を前記光学部品と前記内壁との間に押し込めることを特徴とする光学部品ユニットのレーザ接合方法。
- 内壁に照射するレーザラインビームはビーム幅が300μm以下であることを特徴とする請求項1記載の光学部品ユニットのレーザ接合方法。
- 光学部品は、ガラスによって構成されたレンズであることを特徴とする請求項1又は2記載の光学部品ユニットのレーザ接合方法。
- レンズは、凸レンズであることを特徴とする請求項3記載の光学部品ユニットのレーザ接合方法。
- 収容部品は、円筒形状あるいは円筒形状の一部分を省いた形状であることを特徴とする請求項1記載の光学部品ユニットのレーザ接合方法。
- 樹脂によって形成された収容部品の内壁に沿って収容する光学部品を前記内壁に固定する光学部品のレーザ接合装置であって、前記光学部品を収容した収容部品を保持する保持部材と、長辺が前記内壁に沿った方向となるレーザラインビームを長辺方向に移動させながら前記内壁に照射してレーザ照射部の樹脂を局部的な熱溶融によって粘性流動状態となし、この粘性流動状態の樹脂を前記光学部品と前記内壁との間に押し込めるレーザ照射手段とを具備することを特徴とする光学部品ユニットのレーザ接合装置。
- 内壁に照射するレーザラインビームはビーム幅が300μm以下であることを特徴とする請求項6記載の光学部品ユニットのレーザ接合装置。
- レーザ照射手段は、レーザを出射するために設けられたレーザ光源と、前記レーザ光源から出射した前記レーザを前記収容部品の内壁へ集光する集光光学系とを有することを特徴とする請求項6記載の光学部品ユニットのレーザ接合装置。
- 集光光学系は、非球面レンズであることを特徴とする請求項8記載の光学部品ユニットのレーザ接合装置。
- 集光光学系は、マスクと対面する2個の凸レンズを具備することを特徴とする請求項8記載の光学部品ユニットのレーザ接合装置。
- レーザを照射する内壁の位置を変更するためにレーザ照射手段を移動させる照射位置移動装置を具備することを特徴とする請求項6記載の光学部品ユニットのレーザ接合装置。
- 照射位置移動装置は、レーザ照射手段を収容部品の内壁の周方向に沿って回転移動させることを特徴とする請求項11記載の光学部品ユニットのレーザ接合装置。
- 収容部品は、円筒形状あるいは円筒形状の一部分を省いた形状であることを特徴とする請求項6記載の光学部品ユニットのレーザ接合装置。
- 樹脂によって形成された収容部品と、前記収容部品の内壁に沿って収容された光学部品とを具備する光学部品ユニットであって、前記光学部品から前記内壁の頂端まで高さが1mm以下で、前記収容部品の内壁にレーザ照射痕を有し、前記レーザ照射痕は内壁を局部的に熱溶融させて粘性流動状態とした樹脂が前記光学部品と前記内壁との間に押し込められてなり、かつ前記内壁からの盛り上がりが0.1mm以下であり、且つ収容部品の光学部品受け面に溶融痕がないことを特徴とする光学部品ユニット。
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| JP2004112612A JP4413059B2 (ja) | 2004-04-07 | 2004-04-07 | 光学部品ユニット用のレーザ接合装置および光学部品ユニットのレーザ接合方法 |
| US11/098,435 US7411748B2 (en) | 2004-04-07 | 2005-04-05 | Optical component unit, laser joining method and apparatus for joining optical component |
| CNB200510063894XA CN100354114C (zh) | 2004-04-07 | 2005-04-07 | 光学零件单元、光学零件的激光接合方法及装置 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2163373A3 (de) * | 2008-09-12 | 2015-03-18 | JENOPTIK Automatisierungstechnik GmbH | Airbagabdeckung mit Schusskanal sowie Verfahren und Vorrichtung zur Herstellung einer solchen Airbagabdeckung |
| US20150280767A1 (en) * | 2014-03-31 | 2015-10-01 | Apple Inc. | Laser welding of transparent and opaque materials |
| US10200516B2 (en) | 2014-08-28 | 2019-02-05 | Apple Inc. | Interlocking ceramic and optical members |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2163373A3 (de) * | 2008-09-12 | 2015-03-18 | JENOPTIK Automatisierungstechnik GmbH | Airbagabdeckung mit Schusskanal sowie Verfahren und Vorrichtung zur Herstellung einer solchen Airbagabdeckung |
| US20150280767A1 (en) * | 2014-03-31 | 2015-10-01 | Apple Inc. | Laser welding of transparent and opaque materials |
| US9787345B2 (en) * | 2014-03-31 | 2017-10-10 | Apple Inc. | Laser welding of transparent and opaque materials |
| US10200516B2 (en) | 2014-08-28 | 2019-02-05 | Apple Inc. | Interlocking ceramic and optical members |
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