JP4078025B2

JP4078025B2 - Optical pickup unit adjustment assembly equipment

Info

Publication number: JP4078025B2
Application number: JP2000320193A
Authority: JP
Inventors: 久慶大島; 太郎照
Original assignee: Ricoh Co Ltd
Current assignee: Ricoh Co Ltd
Priority date: 2000-10-20
Filing date: 2000-10-20
Publication date: 2008-04-23
Anticipated expiration: 2020-10-20
Also published as: JP2002133707A

Description

【０００１】
【発明の属する技術分野】
本発明は光ピックアップユニットの調整組立装置に関する。
【０００２】
【従来の技術】
特開平１０−１９９０１５号公報にて、光学ヘッドの実装装置、方法に関し、ステージの座標軸と検出手段の座標軸の間の傾きを測定して記憶し、座標変換しながら位置決めすることを可能とし、発光手段の無発光状態で発光点を検出することを目的とした技術が開示されている。その構成を以下に記す。
【０００３】
第１のステージに支持された発光手段、受光手段及び第２のステージに支持された光学素子の位置を検出する手段と、該第１及び第２のステージの座標軸と該検出手段の座標軸の間の傾きを求めて記憶した座標変換モジュールと、該検出手段によって検出された発光手段及び受光手段の位置及び光学素子の位置を該座標変換モジュールに従って変換して、該第１のステージ及び第２のステージを制御する制御手段を備えるものである。
【０００４】
【発明が解決しようとする課題】
光ピックアップ装置は、光源と、光源からの光束をディスク上に収束させる対物レンズと、ディスクからの反射光を検出する受光素子と、光源からディスクに至る光束中に設けた種々の光学部品により、ディスクに情報の記録、再生を行うものである。この光ピックアップ装置を構成する部品同士の位置、角度を調整して組み付ける際に構成部品をＣＣＤカメラで検出し、部品同士の相対的なずれ量を演算し、調整するということが考えられる。
【０００５】
特開平１０−１９９０１５号公報はその１例であるが、この調整装置では、装置の持つ座標軸間の傾きをあらかじめ測定、記憶する作業が必要で、さらに座標変換の誤差が調整に悪影響を及ぼす可能性があった。
【０００６】
そこで本発明はより高い精度で組み立てることができる光ピックアップユニットの調整組立装置を提供することを目的とする。
【０００７】
【課題を解決するための手段】
請求項１に記載の発明は、発光素子、受光素子を固定した光学部品に対して光学素子を位置、角度を調整して固定する光ピックアップユニットの調整組立装置であって、光学部品を把持する第１把持手段と、第１把持手段を調整方向に駆動する駆動手段と、光学部品の電気的接続部に電極を接続する接続手段と、光学部品の外形及び光学部品上に移動された光学素子の外形を検出する第１検出手段と、光学部品及び光学素子を照明する第１照明手段と、光学素子を把持する第２把持手段と、光学素子の外形を検出する第２検出手段と、光学素子を照明する第２照明手段と、光学素子を光学部品の上に移動する移動手段と、第１検出手段により検出した情報と光学部品の外形の相対関係を記憶する第１記憶手段と、第２検出手段により検出した情報と光学素子の外形の相対関係を記憶する第２記憶手段とを備え、第２記憶手段の光学素子の外形に対する位置、角度情報と、第１記憶手段の光学部品の外形に対する位置、角度情報をもとに光学素子の外形に対する光学部品の外形の調整目標値を決め、移動手段により光学部品の上に移動した光学素子と光学部品の外形を第１検出手段によって検出し、光学素子に対して光学部品の外形が調整目標値となるように光学部品の位置、角度を調整することを特徴とする。
【０００８】
請求項１に記載の発明によれば、光ピックアップユニットの調整組立装置に関して、調整前に調整部品の外形に対する調整要素（レーザーユニットでは発光素子の発光点、受光素子の受光部パターン、ホログラム素子ではホログラムパターンまたはホログラムパターンと同時に付けられたアライメントマーク）の相対位置、角度を調整部検出手段または別ステーションの検出手段で検出記憶し、調整時に調整部品の姿勢検出を部品の外形で行い、調整前に検出した部品の外形に対する調整要素の相対位置を考慮して決めた調整目標値に対して調整することで、調整時検出が難しい調整要素でもその部品の外形を検出することで繰り返し調整を行うことができ、精度の高い調整が可能となる。
【０００９】
請求項２に記載の発明は、光学部品の位置、角度を光学素子の位置、角度に対して調整する際に、第１把持手段と第２把持手段に付けられた調整用マークを検出して、光学部品の発光素子の発光点及び受光素子の受光面パターンの第１把持手段に付けられた調整用マークに対する相対関係、及び第２検出手段により検出したホログラムパターンの位置、角度の第２把持手段に付けられた調整用マークに対する相対関係をもとに、第２把持手段に付けられた調整用マークに対する第１把持手段に付けられた調整用マークの調整目標値を決め、移動手段により光学部品の上に光学素子を移動し、第２把持手段の調整用マークに対する第１把持手段の調整用マークが調整目標値となるように光学部品の位置、角度を調整することで、光学部品の発光素子、受光素子の位置、角度を光学素子のホログラムパターンの位置、角度に対して調整することを特徴とする。
【００１０】
請求項２に記載の発明によれば、光ピックアップユニットの調整組立装置に関して、請求項１に記載の発明と同様な効果を奏するとともに、調整前に調整部品の把持手段に設けた調整用マークに対する調整要素の相対位置、角度を調整部検出手段または別ステーションの検出手段で検出記憶し、調整時に調整部品の姿勢検出を把持手段に設けた調整用マークで行うことで、部品外形よりも安定した検出が可能となり、精度の高い調節が可能となる。
【００１１】
請求項３に記載の発明は、第１検出手段及び第２検出手段の光学部品と光学素子の画像を検出する視野を変更手段により切り替え、発光素子の発光点と受光素子の受光面パターンとから光学部品の素子角度を求め、光学素子のホログラムパターンの２点から光学素子のパターン角度を求めるようにしたことを特徴とする。
【００１２】
請求項３に記載の発明によれば、光ピックアップユニットの調整組立装置に関して、請求項１に記載の発明と同様な効果を奏するとともに、検出手段を移動することで視野を切り替え、角度の検出ができるようにすることで、検出手段の視野を狭くすることができ、画像処理による検出精度を上げ、精度の高い調整が可能となる。
【００１３】
請求項４に記載の発明は、第１検出手段の視野を変更手段により切り替える際に、発光素子と受光素子の焦点方向高さの違いだけ第１検出手段を焦点方向に移動する焦点調整手段を設けたことを特徴とする。
【００１４】
請求項４に記載の発明によれば、光ピックアップユニットの調整組立装置に関して、請求項３に記載の発明と同様な効果を奏するとともに、レーザーユニットのように発光素子と受光素子の実装高さの違う部品の姿勢（位置、角度）検出が可能となる。
【００１５】
請求項５に記載の発明は、第１検出手段を焦点方向に移動する焦点調整を、第１検出手段で取り込んだ画像と基準画像として記憶した画像の検出画素の一致度が最大となるように焦点位置を調整することを特徴とする。
【００１６】
請求項５に記載の発明によれば、光ピックアップユニットの調整組立装置に関して、請求項４に記載の発明と同様な効果を奏するとともに、焦点方向高さの違う２つの素子の実装高さの誤差が多少あった場合でも焦点を合わせることができ、鮮明な検出画像を得られ、精度の高い調整が可能となる。
【００１７】
請求項６に記載の発明は、第１検出手段及び第２検出手段の拡大レンズ部に取り付けられた複数の反射プリズムを移動することで光学部品と光学素子の画像を得る複数の視野の検出をできるようにしたことを特徴とする。
【００１８】
請求項６に記載の発明によれば、光ピックアップユニットの調整組立装置に関して、請求項１に記載の発明と同様な効果を奏するとともに、検出手段（ＣＣＤカメラと拡大レンズ）を移動する場合に比べ、移動停止精度の影響を受けにくく、精度の高い調整が可能となる。
【００１９】
請求項７に記載の発明は、第１検出手段及び第２検出手段の拡大レンズ部に固定された複数の反射プリズムにより、光学部品と光学素子の画像を得る複数の視野が同時に検出できるようにしたことを特徴とする。
【００２０】
請求項７に記載の発明によれば、光ピックアップユニットの調整組立装置に関して、請求項１に記載の発明と同様な効果を奏するとともに、検出手段（ＣＣＤカメラと拡大レンズ）の移動、反射プリズムの移動を行うことなく、複数の視野を検出することができ、移動停止精度の影響を受けにくく、精度の高い調整が可能となる。
【００２１】
請求項８に記載の発明は、複数の反射プリズムにおいて、対となる反射プリズムの設置距離を変えることで焦点深度の異なる２視野の検出が可能な検出手段を用いたことを特徴とする。
【００２２】
請求項８に記載の発明によれば、光ピックアップユニットの調整組立装置に関して、請求項６または７に記載の発明と同様な効果を奏するとともに、焦点方向の可動部が必要なくなり、可動による誤差の影響を受けにくくするとともに、調整装置の駆動部を簡略化することが可能となる。
【００２３】
請求項９に記載の発明は、光学素子のホログラムパターンの位置、角度を検出するための照明として第１偏光板で偏光した光を照射する第３照明装置を備え、第３照明装置からの光が光学素子を通過した後に第２偏光板を通した透過照明で、第２検出手段により前記光学素子のホログラムパターンを検出することを特徴とする。
【００２４】
請求項９に記載の発明によれば、光ピックアップユニットの調整組立装置に関して、請求項１に記載の発明と同様な効果を奏するとともに、光学素子のホログラムパターンまたは光学素子に付けられたアライメントマークが画像処理で検出しやすくなり、照明強度の影響、部品の差異による検出精度低下の影響を受けにくくなるため、精度の高い調整が可能となる。
【００２５】
請求項１０に記載の発明は、光学素子のホログラムパターンの位置、角度を検出するために、偏光した光を照射することで検出可能な複数のアライメントマークを光学素子の作成時に設けることを特徴とする。
【００２６】
請求項１０に記載の発明によれば、光ピックアップユニットの調整組立装置に関して、請求項１に記載の発明と同様な効果を奏するとともに、ホログラムパターンの位置、角度調整の代わりに検出しやすいアライメントマークでの位置、角度調整ができるとともに、偏光した光を当てた時のみ検出できるため、光ピックアップのレーザービームに影響を与えることなく、精度の高い位置、角度検出が可能となる。
【００２７】
請求項１１に記載の発明は、光学素子上に設けるアライメントマーク、第１把持手段及び第２把持手段に設ける調整用マークを円形としたことを特徴とする。
【００２８】
請求項１１に記載の発明によれば、光ピックアップユニットの調整組立装置に関して、請求項１０に記載の発明と同様な効果を奏するとともに、検出手段で検出をして画像処理を行った時に部品の角度ずれの影響を受けずに検出可能となり、よって精度の高い調整が可能となる。
【００２９】
請求項１２に記載の発明は、光学部品及び光学素子の外形コーナー部分に、光学部品及び光学素子の作成時に検出用マークが施されることを特徴とする。検出マークとは、コーティングや着色を指す。
【００３０】
請求項１２に記載の発明によれば、光ピックアップユニットの調整組立装置に関して、請求項１に記載の発明と同様な効果を奏するとともに、画像処理を行った際に部品外形の検出がしやすくなり、精度の高い位置、角度検出が可能となる。
【００３１】
【発明の実施の形態】
以下、添付した図面を参照しながら、本実施の形態を詳細に説明する。
【００３２】
この光ピックアップユニットの調整組立装置は、光ピックアップ装置内で用いる発光素子１ａと受光素子１ｂ、光学素子（ホログラム素子）２を集積化した光学部品（図２参照）１の構成部品である発光素子１ａ、受光素子１ｂを所定位置に実装固定した光学部品１の発光素子１ａの発光点位置とその発光点１ｄと受光素子１ｂの受光面パターン１ｅの中心の成す角度に対して、ホログラム素子２のホログラムパターン２ａの位置、角度を調整して組み立てる調整組立装置である。
【００３３】
光学部品１は第１把持手段３により外形を把持されており、第１把持手段３は調整アーム４を介して光学部品１を昇降させる昇降シリンダ５及び調整ステージ６に固定されている。調整ステージ６はホログラム素子２に対する光学部品１のＸ、Ｙ、θ方向3軸の調整が可能な3つのステージ６ａ、６ｂ、６ｃで構成され、コンピュータからの調整量指示に従ってステージドライバを通して調整ステージ６を駆動する。調整アーム４には、光学部品１の中の発光素子１ａを発光させるため光学部品１の電気的接続部１ｃに電極を接続する接続手段７が取り付けられている。この接続手段７でＬＤドライバと光学部品１を電気的に接続することで発光素子１ａを調整中発光させる。これら光学部品１の調整部の上に光学部品１の外形、発光素子１ａの発光点１ｄ、受光素子１ｂの受光面パターン１ｅ及び移動手段１４で光学部品１の上に移動されたホログラム素子２の外形を検出するための第１ＣＣＤカメラ９ｂと第１拡大レンズ９ａを組み合わせた第１検出手段９、光学部品１の受光素子１ｂのパターン１ｅ及び光学部品１とホログラム素子２の外形を検出するため光学部品１を照明する第１照明手段１１、第１検出手段９の視野を変更する第１視野変更手段１０、焦点を調整する自動ステージから成る第1検出手段９の焦点調整手段がある。
【００３４】
ホログラム素子２は第２把持手段１３により外形を把持され、第２把持手段１３は移動手段１４に取り付けられている。移動手段１４はホログラム素子２を第２把持手段１３で把持した状態で第２把持手段１３をホログラム素子検出部から調整部に移動できる。
【００３５】
ホログラム素子検出部にはホログラム素子２の外形及びホログラムパターン２ａの位置、角度を検出するための第２ＣＣＤカメラ１５ｂと第２拡大レンズ１５ａを組み合わせた第２検出手段１５と、ホログラム素子２の外形、位置、角度を検出するためホログラム素子２を照明する第２照明手段１７、第２検出手段１５の視野を変更する第２視野変更手段１６がある。
【００３６】
第２照明手段１７はホログラム素子２の外形を検出する場合は第２拡大レンズ１５ａに取り付けられた落射照明、ホログラムパターン２ａまたはアライメントマーク２ｂを検出する場合は透過照明に切り替えて使用する。
【００３７】
ホログラムパターン２ａまたはアライメントマーク２ｂを検出する場合の透過照明は、第１偏光板１９で偏光した光を照射する照明装置２０を用い、その照明装置２０からの光がホログラム素子２を通過した後第２偏光板１８を通り、第２ＣＣＤカメラ１５ｂと第２拡大レンズ１５ａを組み合わせた第２検出手段１５で検出される。
【００３８】
ホログラム素子２に付けるアライメントマーク２ｂは、ホログラムパターン２ａを作成すると同時に付けられ、偏光した光を当てることで検出可能な２つ以上のマークが良い。
【００３９】
把持手段に付ける調整マーク、ホログラム素子２に付けるアライメントマーク２ｂは円形にすることが望ましい。
【００４０】
部品の外形コーナー部分には、コーティング、着色等を施すことにより、画像処理の検出が容易となる。
【００４１】
次に、上述した構成に基づき、本発明の実施形態の調整装置を用いた調整方法を図を参照して説明する。
【００４２】
まず、図３（ａ）のように、第１検出手段９の第１視野３０ａで光学部品１の１つの角部を、第１検出手段９の第２視野３０ｂで光学部品１の他の１つの角部を、第１検出手段９の第３視野３０ｃで光学部品１の発光素子１ａの発光点１ｄを、第１検出手段９の第４視野３０ｄで光学部品１の受光素子１ｂの受光パターン１ｅの中心をそれぞれ検出する。そして、各視野の画像処理結果をもとに、光学部品の外形に対する発光素子１ａの発光点１ｄの位置（Ｘ１，Ｙ１）、その発光点１ｄと受光素子１ｂの受光パターン１ｅの中心を結ぶ線と光学部品１の外形線の成す角（θ１）をそれぞれ求める。これらは、光学部品１の外形に対する各素子の相対位置である。図３（ｂ）のように第２検出手段１５の第１視野３２ａでホログラム素子２の第１ホログラムパターン（第１アライメントマーク）を、第２検出手段１５の第２視野３２ｂでホログラム素子２の第２ホログラムパターン（第２アライメントマーク）を、第２検出手段１５の第３視野３２ｃでホログラム素子２の１つの角部を、第２検出手段１５の第４視野３２ｄでホログラム素子２の他の１つの角部を、それぞれ検出する。各視野の画像処理結果をもとにホログラム素子２の外形に対する第１ホログラムパターンの位置（Ｘ２，Ｙ２）、及びその第１ホログラムパターンと第２ホログラムパターンを結ぶ線とホログラム素子外形線の成す角（θ２）をそれぞれ求める。これらは、ホログラム素子２の外形に対する素子の相対位置である。
【００４３】
次に、光学部品１の外形に対する素子の相対位置、ホログラム素子２の外形に対する素子の相対位置から光学部品１の発光素子１ａ、受光素子１ｂと、ホログラム素子２のホログラムパターン２ａが所定の位置関係になるような光学部品１の外形に対するホログラム素子２の外形の位置（Ｘ３ａ，Ｙ３ａ）、角度（θ３ａ）の調整目標値を求める。
【００４４】
そして、ホログラム素子２を光学部品１の上に移動手段１４にて移動し、図３（ｃ）のように光学部品１とホログラム素子２とを重ね合わせた状態で、第１検出手段９の第１視野３０ａで光学部品１の１つの角部を、第１検出手段９の第２視野３０ｂで該光学部品１の他の１つの角部を、第１検出手段９の第５視野３０ｅでホログラム素子２の１つの角部を、第１検出手段９の第６視野３０ｆでホログラム素子２の他の１つの角部をそれぞれ検出する。そして、各視野の画像処理結果をもとに光学部品１の外形に対するホログラム素子２の外形の位置（Ｘ３，Ｙ３）、光学部品１の外形に対するホログラム素子２の外形の角度（θ３）をそれぞれ求め、調整目標値Ｘ３ａ、Ｙ３ａ、θ３ａとの差分だけホログラム素子２に対する光学部品１の位置、角度調整を行う。図３（ｃ）のような検出と調整目標値に対する調整を繰り返し行うことでその差分を０に近づけ、設定値以下になったら調整を終了する。それらのフローチャートを図１０に示す。
【００４５】
画像処理精度を上げるために視野を狭くする必要があるため、部品の角度は図９に示す計算方法（ホログラムアライメントマークの場合の例）で第１及び第２視野変更手段で第１及び第２検出手段の視野を変更して求める。
【００４６】
視野変更手段１０として図４に示すように第１及び第２検出手段の拡大レンズ部に取り付けられ、図３（ａ），（ｂ）に示した光学部品１とホログラム素子２の角部、発光点、受光パターン、及びホログラムパターン等を検出する各視野から第１，第２ＣＣＤカメラ９ｂ，１５ｂによって画像を得るため、複数の反射プリズム１０ｂを有する視野変更手段を移動することで視野を切り替えるようにすることもできる。図４（ａ）に示すように、ホログラム素子２の一方のホログラムパターン２ｂを検出後、他方のホログラムパターン２ｂを検出し、また同様に、図４（ｂ）に示す光学部品１の発光素子１ａを検出し、次に受光素子１ｂを検出することが、第１及び第２検出手段を移動することなく可能となる。
【００４７】
また、図５、６に示すように、第１及び第２検出手段の拡大レンズ部に固定された複数の反射プリズム１０ｂ、１６ｂにより、例えば、図５（ａ）に示すように反射プリズムを共通に利用することにより、また図５（ｂ）のように、共通利用する反射プリズムを焦点深度に応じた配置として、あるいは、図６（ａ），（ｂ）のように、検出する光学部品１、ホログラム素子２の角部、発光素子１ａ、受光素子１ｂ、ホログラムパターン２ｂ等の第１，第２検出手段９，１５（第１，第２ＣＣＤカメラ）に対する視野を得るために設置距離を変えた反射プリズムの組を適宜配置することよって、複数の視野を同時に切り替えなしで検出することもできる。
【００４８】
また、図７に示すように第１検出手段９には、焦点調整手段として第１検出手段９を光学部品１に対して上下可能な自動ステージを設けることにより、焦点方向高さの違う素子（光学部品１の発光素子１ａ、受光素子１ｂ）を実装した部品でも検出が可能となる。
【００４９】
通常、焦点調整は予め設定された部品内の素子高さ情報に基づきステージを動かして行うが、図８に示すように画像処理の検出画像の基準画像に対する一致度が最大になる点にステージを停止することで焦点調整をしてもよい。
【００５０】
【発明の効果】
請求項１に記載の発明によれば、調整時検出が難しい調整要素でもその部品の外形を検出することで繰り返し調整を行うことができ、精度の高い調整が可能となる。
【００５１】
請求項２に記載の発明によれば、請求項１に記載の発明と同様な作用効果を奏するとともに、部品外形よりも安定した検出が可能となり、精度の高い調節が可能となる。
【００５２】
請求項３に記載の発明によれば、請求項１に記載の発明と同様な効果を奏するとともに、検出手段の視野を狭くすることができ、画像処理による検出精度を上げ、精度の高い調整が可能となる。
【００５３】
請求項４に記載の発明によれば、請求項３に記載の発明と同様な効果を奏するとともに、レーザーユニットのように発光素子と受光素子の実装高さの違う部品の姿勢（位置、角度）検出が可能となる。
【００５４】
請求項５に記載の発明によれば、請求項４に記載の発明と同様な効果を奏するとともに、焦点方向高さの違う２つの素子の実装高さの誤差が多少あった場合でも焦点を合わせることができ、鮮明な検出画像を得られ、精度の高い調整が可能となる。
【００５５】
請求項６に記載の発明によれば、請求項１に記載の発明と同様な効果を奏するとともに、検出手段（ＣＣＤカメラと拡大レンズ）を移動する場合に比べ、移動停止精度の影響を受けにくく、精度の高い調整が可能となる。
【００５６】
請求項７に記載の発明によれば、請求項１に記載の発明と同様な効果を奏するとともに、検出手段（ＣＣＤカメラと拡大レンズ）の移動、反射プリズムの移動を行うことなく、複数の視野を検出することができ、移動停止精度の影響を受けにくく、精度の高い調整が可能となる。
【００５７】
請求項８に記載の発明によれば、請求項６または７に記載の発明と同様な効果を奏するとともに、焦点方向の可動部が必要なくなり、可動による誤差の影響を受けにくくするとともに、調整装置の駆動部を簡略化することが可能となる。
【００５８】
請求項９に記載の発明によれば、請求項１に記載の発明と同様な効果を奏するとともに、光学素子のホログラムパターンまたは光学素子に付けられたアライメントマークが画像処理で検出しやすくなり、照明強度の影響、部品の差異による検出精度低下の影響を受けにくくなるため、精度の高い調整が可能となる。
【００５９】
請求項１０に記載の発明によれば、請求項１に記載の発明と同様な効果を奏するとともに、ホログラムパターンの位置、角度調整の代わりに検出しやすいアライメントマークでの位置、角度調整ができるとともに、偏光した光を当てた時のみ検出できるため、光ピックアップのレーザービームに影響を与えることなく、精度の高い位置、角度検出が可能となる。
【００６０】
請求項１１に記載の発明によれば、請求項１０に記載の発明と同様な効果を奏するとともに、検出手段で検出をして画像処理を行った時に部品の角度ずれの影響を受けずに検出可能となり、よって精度の高い調整が可能となる。
【００６１】
請求項１２に記載の発明によれば、請求項１に記載の発明と同様な効果を奏するとともに、画像処理を行った際に部品外形の検出がしやすくなり、精度の高い位置、角度検出が可能となる。
【図面の簡単な説明】
【図１】本発明を適用した光ピックアップユニットの調整組立装置の全体を示した構成図である。
【図２】本発明に関する発光素子、受光素子を固定した光学部品、及びホログラム素子の調整方向を示した斜視図、及び両者を結合させた光学部品の断面図である。
【図３】本発明の発光素子、受光素子を固定した光学部品、及びホログラム素子の調整組み立て方法を示した説明図である。
【図４】本発明の複数のプリズムを移動することで２視野を検出できる光学系を表した構成図である。
【図５】本発明の複数のプリズムで２視野を同時に検出できる光学系の構成図である。
【図６】本発明の複数の反射プリズムで構成し、多視野を同時に検出可能な光学系の斜視図である。
【図７】本発明の視野変更時の焦点方向の調整を表した概略図である。
【図８】本発明の検出画像の基準画像に対する一致度による焦点位置検出方法を表した説明図である。
【図９】本発明における２視野での画像処理による部品角度算出方法を示した模式図である。
【図１０】本発明における光ピックアップ用集積化部品の調整組立のフローチャートである。
【符号の説明】
１光学部品
１ａ発光素子
１ｂ受光素子
１ｃ電気的接続部
１ｄ発光点
１ｅ受光面パターン
１ｆ光学部品の外形
２光学素子（ホログラム素子）
２ａホログラムパターン
２ｂアライメントマーク
２ｃ光学素子の外形
３第１把持手段
７接続手段
９第１検出手段
９ａ第１拡大レンズ
９ｂ第１ＣＣＤカメラ
１０ｂ、１６ｂ複数の反射プリズム
１１第１照明手段
１２焦点調整手段
１３第２把持手段
１４移動手段
１５第２検出手段
１５ａ第２拡大レンズ
１５ｂ第２ＣＣＤカメラ
１７第２照明手段
１８第２偏光板
１９第１偏光板
２０第３照明装置 [0001]
BACKGROUND OF THE INVENTION
The present invention relates to an adjustment assembly apparatus for an optical pickup unit.
[0002]
[Prior art]
Japanese Patent Application Laid-Open No. 10-199015 discloses an optical head mounting apparatus and method that measures and stores the inclination between the coordinate axis of the stage and the coordinate axis of the detection means, enables positioning while performing coordinate conversion, and emits light. A technique for detecting a light emitting point in a non-light emitting state of the means is disclosed. The configuration is described below.
[0003]
A light-emitting means supported by the first stage, a light-receiving means, a means for detecting the position of the optical element supported by the second stage, and a coordinate axis between the first and second stages and a coordinate axis of the detection means A coordinate conversion module that obtains and stores the inclination of the light source, and converts the position of the light emitting means and the light receiving means and the position of the optical element detected by the detection means according to the coordinate conversion module, and converts the first stage and the second stage Control means for controlling the stage is provided.
[0004]
[Problems to be solved by the invention]
The optical pickup device includes a light source, an objective lens that converges a light beam from the light source on the disk, a light receiving element that detects reflected light from the disk, and various optical components provided in the light beam from the light source to the disk. Information is recorded and reproduced on a disc. When adjusting and assembling the components and components of the optical pickup device, it is conceivable to detect the components with a CCD camera and calculate and adjust the relative displacement between the components.
[0005]
Japanese Patent Laid-Open No. 10-199015 is one example, but with this adjustment device, it is necessary to measure and store the inclination between coordinate axes of the device in advance, and further, coordinate conversion errors can adversely affect the adjustment. There was sex.
[0006]
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an optical pickup unit adjusting and assembling apparatus that can be assembled with higher accuracy.
[0007]
[Means for Solving the Problems]
Invention of claim 1, the light emitting element, the position of the optical element relative to an optical component with a fixed receiving element, an adjustment assembly apparatus of the optical pickup unit to affix and adjust the angle, gripping the optical components a first gripping means for a motion means driving you drive the first gripping means in the adjustment direction, and connection means for connecting the electrodes to the electrical connection portion of the optical component is moved to the outer shape and optics of the optical components and a first detecting means for detecting an outer shape of the optical element, a first illuminating means for illuminating an optical component及beauty light optical element, and a second gripping means for gripping the optical element, the second to detect the outer shape of the optical element the storing and detecting means, and a second illumination means for illuminating the optical element, moving means for moving the optical element on the optical components, the detected information and the outline of the relative relationship of the optical component by the first detection means 1 and memory means, detected by the second detecting means And a second storage means for storing a relative relationship of the outer shape of the distribution and the optical element, the position relative to the outer shape of the optical element of the second storage means, and the angle information, position relative to the optical components of the outer shape of the first storage means, the angle information determining an adjustment target value of the outline of the optical part with respect to the outer shape of the optical element on the basis of the moved optical element and optical components of the outer shape on the optical component detected by the first detecting means by the moving means, the optical element position of the optical component so that the optical part geometry becomes the adjustment target value for the, and adjusting the angle.
[0008]
According to the first aspect of the present invention, with respect to the optical pickup unit adjustment assembly apparatus, adjustment elements for the outer shape of the adjustment component before adjustment (in the laser unit, the light emitting point of the light emitting element, the light receiving part pattern of the light receiving element, the hologram element) The relative position and angle of the hologram pattern or the alignment mark attached at the same time as the hologram pattern) are detected and stored by the adjustment unit detection means or the detection means of another station. By adjusting the adjustment target value determined in consideration of the relative position of the adjustment element with respect to the external shape of the detected part, even the adjustment element that is difficult to detect at the time of adjustment is repeatedly adjusted by detecting the external shape of the part. Can be adjusted with high accuracy.
[0009]
According to the second aspect of the present invention, when the position and angle of the optical component are adjusted with respect to the position and angle of the optical element, the adjustment marks attached to the first gripping means and the second gripping means are detected. The relative relationship between the light emitting point of the light emitting element of the optical component and the light receiving surface pattern of the light receiving element with respect to the adjustment mark attached to the first gripping means, and the second gripping of the position and angle of the hologram pattern detected by the second detecting means based on the relative relationship adjustment mark attached to the unit, determine the adjustment target value of the adjustment marks attached to the first holding means for adjustment mark attached to the second gripping means, by moving means an optical element to move over the optical component, the position of the optical component as adjustment marks of the first gripping means is adjusted target value for the adjustment marks of the second gripping means, by adjusting the angle, optical components Light emission Son, the position of the light receiving element, the position of the hologram pattern of the optical element an angle, and adjusting with respect to the angle.
[0010]
According to the second aspect of the present invention, the optical pickup unit adjusting and assembling apparatus has the same effect as the first aspect of the invention, and can be applied to the adjustment mark provided on the gripping means of the adjusting component before the adjustment. The relative position and angle of the adjustment elements are detected and stored by the adjustment unit detection means or the detection means of another station, and the posture of the adjustment part is detected by the adjustment marks provided on the gripping means during adjustment, making it more stable than the part outline. Detection is possible, and adjustment with high accuracy is possible.
[0011]
According to the third aspect of the present invention, the optical parts of the first detecting means and the second detecting means and the field of view for detecting the image of the optical element are switched by the changing means , and the light emitting point of the light emitting element and the light receiving surface pattern of the light receiving element are switched. The element angle of the optical component is obtained, and the pattern angle of the optical element is obtained from two points of the hologram pattern of the optical element.
[0012]
According to the third aspect of the invention, the optical pickup unit adjusting and assembling apparatus has the same effect as that of the first aspect of the invention, and the field of view is switched by moving the detecting means so that the angle can be detected. By making it possible, the field of view of the detection means can be narrowed, the detection accuracy by image processing is increased, and high-precision adjustment is possible.
[0013]
According to a fourth aspect of the present invention, there is provided a focus adjustment unit that moves the first detection unit in the focal direction by a difference in height between the light emitting element and the light receiving element when the visual field of the first detection unit is switched by the changing unit. It is provided.
[0014]
According to the fourth aspect of the invention, the optical pickup unit adjusting and assembling apparatus has the same effect as the third aspect of the invention, and the mounting height of the light emitting element and the light receiving element as in the laser unit is improved. The posture (position, angle) of different parts can be detected.
[0015]
According to the fifth aspect of the present invention, in the focus adjustment for moving the first detection unit in the focal direction, the degree of coincidence between the image captured by the first detection unit and the detection pixel of the image stored as the reference image is maximized. The focal position is adjusted.
[0016]
According to the fifth aspect of the present invention, the optical pickup unit adjusting and assembling apparatus has the same effect as that of the fourth aspect of the invention, and an error in the mounting height of two elements having different heights in the focal direction. Even if there is a slight amount, the focus can be adjusted, a clear detection image can be obtained, and adjustment with high accuracy is possible.
[0017]
According to a sixth aspect of the present invention, detection of a plurality of fields of view for obtaining images of optical components and optical elements by moving a plurality of reflecting prisms attached to the magnifying lens portions of the first detection means and the second detection means is performed. It is possible to do it.
[0018]
According to the sixth aspect of the present invention, the optical pickup unit adjusting and assembling apparatus has the same effect as the first aspect of the invention, and has the same effect as the case where the detection means (CCD camera and magnifying lens) are moved. Therefore, it is difficult to be influenced by the movement stop accuracy, and a highly accurate adjustment becomes possible.
[0019]
According to the seventh aspect of the present invention, a plurality of reflection prisms fixed to the magnifying lens portions of the first detection unit and the second detection unit can simultaneously detect a plurality of fields of view for obtaining images of the optical component and the optical element. It is characterized by that.
[0020]
According to the seventh aspect of the invention, the optical pickup unit adjusting and assembling apparatus has the same effect as the first aspect of the invention, and also includes the movement of the detecting means (CCD camera and magnifying lens) and the reflection prism. A plurality of fields of view can be detected without moving, and it is difficult to be affected by the movement stop accuracy, and high-precision adjustment is possible.
[0021]
The invention described in claim 8 is characterized in that, in a plurality of reflecting prisms, detecting means capable of detecting two fields of view with different depths of focus by changing the installation distance of a pair of reflecting prisms is used.
[0022]
According to the eighth aspect of the present invention, the optical pickup unit adjusting and assembling apparatus has the same effect as that of the sixth or seventh aspect of the invention and eliminates the need for a movable portion in the focal direction, thereby reducing errors caused by the movement. It becomes difficult to be affected, and the drive unit of the adjusting device can be simplified.
[0023]
The invention according to claim 9 includes a third illumination device that emits light polarized by the first polarizing plate as illumination for detecting the position and angle of the hologram pattern of the optical element, and the light from the third illumination device. There in transmitted illumination through the second polarizing plate after passing through the optical element, and detecting the hologram pattern of the optical element by the second detection means.
[0024]
According to the ninth aspect of the invention, the optical pickup unit adjusting and assembling apparatus has the same effect as the first aspect of the invention, and the hologram pattern of the optical element or the alignment mark attached to the optical element is provided. It becomes easy to detect by image processing, and it becomes difficult to be affected by the influence of the illumination intensity and the decrease in detection accuracy due to the difference in parts, so that highly accurate adjustment is possible.
[0025]
The invention according to claim 10 is characterized in that, in order to detect the position and angle of the hologram pattern of the optical element, a plurality of alignment marks that can be detected by irradiating polarized light are provided at the time of producing the optical element. To do.
[0026]
According to the tenth aspect of the present invention, the optical pickup unit adjusting and assembling apparatus has the same effect as the first aspect of the invention, and is easy to detect instead of the hologram pattern position and angle adjustment. Since the position and angle can be adjusted at the same time, and detection is possible only when polarized light is applied, the position and angle can be detected with high accuracy without affecting the laser beam of the optical pickup.
[0027]
The invention of claim 11 is characterized in that the alignment mark provided on the optical element, the adjustment mark provided on the first gripping means and second gripping means is circular.
[0028]
According to the eleventh aspect of the present invention, the optical pickup unit adjusting and assembling apparatus has the same effect as the tenth aspect of the present invention, and also when the image processing is performed by the detection means. Detection is possible without being affected by the angle deviation, and therefore, highly accurate adjustment is possible.
[0029]
The invention according to claim 12, the outer corner portion of the optical component and the optical element, detection marks when creating the optical part and the optical element is characterized in that it is facilities. The detection mark refers to coating or coloring.
[0030]
According to the twelfth aspect of the present invention, the optical pickup unit adjusting and assembling apparatus has the same effects as the first aspect of the invention, and it is easy to detect the outer shape of the component when image processing is performed. Highly accurate position and angle detection is possible.
[0031]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present embodiment will be described in detail with reference to the accompanying drawings.
[0032]
This optical pickup unit adjusting and assembling apparatus is a light emitting element that is a component of an optical component (see FIG. 2) 1 in which a light emitting element 1a, a light receiving element 1b, and an optical element (hologram element) 2 used in the optical pickup apparatus are integrated. 1a, the light emitting point position of the light emitting element 1a of the optical component 1 in which the light receiving element 1b is mounted and fixed at a predetermined position, and the angle formed by the light emitting point 1d and the center of the light receiving surface pattern 1e of the light receiving element 1b. This is an adjustment assembling apparatus for assembling by adjusting the position and angle of the hologram pattern 2a.
[0033]
The outer shape of the optical component 1 is gripped by a first gripping means 3, and the first gripping means 3 is fixed to an elevating cylinder 5 and an adjustment stage 6 that lift and lower the optical component 1 via an adjustment arm 4. The adjustment stage 6 is composed of three stages 6a, 6b, 6c that can adjust the three axes in the X, Y, and θ directions of the optical component 1 with respect to the hologram element 2, and according to the adjustment amount instruction from the computer, the adjustment stage 6 is passed through the stage driver. Drive. The adjustment arm 4 is provided with connection means 7 for connecting an electrode to the electrical connection portion 1c of the optical component 1 in order to cause the light emitting element 1a in the optical component 1 to emit light. The light emitting element 1a is caused to emit light during adjustment by electrically connecting the LD driver and the optical component 1 by the connecting means 7. On the adjustment part of the optical component 1, the outer shape of the optical component 1, the light emitting point 1d of the light emitting element 1a, the light receiving surface pattern 1e of the light receiving element 1b, and the hologram element 2 moved onto the optical component 1 by the moving means 14 are displayed. First detection means 9 combining the first CCD camera 9b and the first magnifying lens 9a for detecting the outer shape, the pattern 1e of the light receiving element 1b of the optical component 1, and the optical for detecting the outer shape of the optical component 1 and the hologram element 2. There are a first illuminating means 11 for illuminating the component 1, a first visual field changing means 10 for changing the visual field of the first detecting means 9, and a focus adjusting means for the first detecting means 9 comprising an automatic stage for adjusting the focus.
[0034]
The outer shape of the hologram element 2 is gripped by the second gripping means 13, and the second gripping means 13 is attached to the moving means 14. Moving means 14 can move the second gripping means 13 on whether we adjuster hologram element detector while holding the holographic element 2 in the second gripping means 13.
[0035]
The hologram element detector includes a second detection means 15 that combines the second CCD camera 15b and the second magnifying lens 15a for detecting the outer shape of the hologram element 2 and the position and angle of the hologram pattern 2a, the outer shape of the hologram element 2, There are second illuminating means 17 for illuminating the hologram element 2 for detecting the position and angle, and second visual field changing means 16 for changing the visual field of the second detecting means 15.
[0036]
The second illuminating means 17 is used by switching to epi-illumination attached to the second magnifying lens 15a when detecting the outer shape of the hologram element 2, and transmitting illumination when detecting the hologram pattern 2a or the alignment mark 2b.
[0037]
The transmitted illumination when detecting the hologram pattern 2 a or the alignment mark 2 b uses an illumination device 20 that emits light polarized by the first polarizing plate 19, and the light from the illumination device 20 passes through the hologram element 2 and then is transmitted. The light passes through the two polarizing plates 18 and is detected by the second detection means 15 that combines the second CCD camera 15b and the second magnifying lens 15a.
[0038]
The alignment mark 2b to be attached to the hologram element 2 is preferably two or more marks that are attached simultaneously with the creation of the hologram pattern 2a and can be detected by applying polarized light.
[0039]
The adjustment mark attached to the gripping means and the alignment mark 2b attached to the hologram element 2 are preferably circular.
[0040]
Image processing can be easily detected by coating or coloring the outer corner of the component.
[0041]
Next, based on the above-described configuration, an adjustment method using the adjustment device according to the embodiment of the present invention will be described with reference to the drawings.
[0042]
First, as shown in FIG. 3A, one corner of the optical component 1 is displayed in the first visual field 30a of the first detection unit 9, and the other one of the optical component 1 is displayed in the second visual field 30b of the first detection unit 9. The light receiving points 1d of the light emitting element 1a of the optical component 1 in the third visual field 30c of the first detecting means 9, and the light receiving pattern of the light receiving element 1b of the optical component 1 in the fourth visual field 30d of the first detecting means 9 The center of 1e is detected. Based on the image processing result of each field of view, the position (X1, Y1) of the light emitting point 1d of the light emitting element 1a with respect to the outer shape of the optical component, and the line connecting the light emitting point 1d and the center of the light receiving pattern 1e of the light receiving element 1b And the angle (θ1) formed by the outline of the optical component 1 is obtained. These are relative positions of the respective elements with respect to the outer shape of the optical component 1. As shown in FIG. 3B, the first hologram pattern (first alignment mark) of the hologram element 2 is displayed in the first field 32 a of the second detection unit 15, and the hologram field 2 is displayed in the second field 32 b of the second detection unit 15. The second hologram pattern (second alignment mark), one corner of the hologram element 2 in the third field 32c of the second detector 15 and the other field of the hologram element 2 in the fourth field 32d of the second detector 15 Each corner is detected. The position (X2, Y2) of the first hologram pattern with respect to the outer shape of the hologram element 2 based on the image processing result of each field of view, and the angle formed by the line connecting the first hologram pattern and the second hologram pattern and the outer shape line of the hologram element (Θ2) is obtained respectively. These are the relative positions of the elements with respect to the outer shape of the hologram element 2.
[0043]
Next, the light emitting element 1a and the light receiving element 1b of the optical component 1 and the hologram pattern 2a of the hologram element 2 have a predetermined positional relationship from the relative position of the element with respect to the outer shape of the optical component 1 and the relative position of the element with respect to the outer shape of the hologram element 2. An adjustment target value of the position (X3a, Y3a) and angle (θ3a) of the outer shape of the hologram element 2 with respect to the outer shape of the optical component 1 is obtained.
[0044]
Then, the hologram element 2 is moved on the optical component 1 by the moving means 14, and the first detection means 9 is moved in the state where the optical component 1 and the hologram element 2 are overlapped as shown in FIG. Hologram in one corner of the optical component 1 in one field of view 30a, another corner in the second field of view 30b of the first detector 9 and in the fifth field 30e of the first detector 9 One corner of the element 2 is detected by the sixth visual field 30f of the first detection means 9 and the other one corner of the hologram element 2 is detected. Then, the position (X3, Y3) of the outer shape of the hologram element 2 with respect to the outer shape of the optical component 1 and the angle (θ3) of the outer shape of the hologram element 2 with respect to the outer shape of the optical component 1 are obtained based on the image processing results of each field of view. The position and angle of the optical component 1 with respect to the hologram element 2 are adjusted by the difference from the adjustment target values X3a, Y3a, and θ3a. By repeatedly performing detection and adjustment with respect to the adjustment target value as shown in FIG. 3C, the difference is brought close to 0, and the adjustment is ended when the difference becomes equal to or less than the set value. Those flowcharts are shown in FIG.
[0045]
Since it is necessary to narrow the field of view in order to increase the image processing accuracy, the angle of the component is calculated by the first and second field changing means by the first and second field changing means according to the calculation method shown in FIG. 9 (example in the case of the hologram alignment mark). Obtained by changing the field of view of the detection means.
[0046]
As shown in FIG. 4, the field changing means 10 is attached to the magnifying lens portions of the first and second detection means, and the corners of the optical component 1 and the hologram element 2 and the light emission shown in FIGS. In order to obtain an image by the first and second CCD cameras 9b and 15b from each visual field for detecting a point, a light receiving pattern, a hologram pattern, etc. , the visual field is switched by moving the visual field changing means having a plurality of reflecting prisms 10b. You can also As shown in FIG. 4A, after detecting one hologram pattern 2b of the hologram element 2, the other hologram pattern 2b is detected. Similarly, the light emitting element 1a of the optical component 1 shown in FIG. , And then the light receiving element 1b can be detected without moving the first and second detection means.
[0047]
Also, as shown in FIGS. 5 and 6, a plurality of reflecting prisms 10b and 16b fixed to the magnifying lens portions of the first and second detecting means, for example, as shown in FIG. In addition, as shown in FIG. 5B, the commonly used reflecting prisms are arranged according to the depth of focus, or as shown in FIGS. 6A and 6B, the optical component 1 to be detected. The installation distance was changed in order to obtain a field of view for the first and second detection means 9 and 15 (first and second CCD cameras) such as the corners of the hologram element 2, the light emitting element 1a, the light receiving element 1b, and the hologram pattern 2b. By appropriately arranging a set of reflecting prisms, a plurality of fields of view can be simultaneously detected without switching.
[0048]
Further, the first detecting means 9 as shown in FIG. 7, by providing the automatic stage possible vertically relative to the optical component 1 of the first detecting means 9 as a focus adjusting means, different focal direction height element Detection is possible even with components mounted with the light-emitting element 1a and the light-receiving element 1b of the optical component 1 .
[0049]
Normally, the focus adjustment performed by moving the stage on the basis of the sensor height information preset in part, a stage in that the degree of coincidence is maximized with respect to the reference image of the detected image of the image processing as shown in FIG. 8 The focus may be adjusted by stopping.
[0050]
【The invention's effect】
According to the first aspect of the present invention, even an adjustment element that is difficult to detect at the time of adjustment can be repeatedly adjusted by detecting the outer shape of the component, and a highly accurate adjustment is possible.
[0051]
According to the second aspect of the present invention, the same effects as the first aspect of the invention can be achieved, and more stable detection than the outer shape of the component can be achieved, and adjustment with high accuracy is possible.
[0052]
According to the third aspect of the invention, the same effects as the first aspect of the invention can be achieved, the field of view of the detection means can be narrowed, detection accuracy by image processing can be increased, and high-precision adjustment can be performed. It becomes possible.
[0053]
According to the invention described in claim 4, the same effects as those of the invention described in claim 3 can be obtained, and the postures (positions and angles) of components having different mounting heights of the light emitting element and the light receiving element, such as a laser unit. Detection is possible.
[0054]
According to the fifth aspect of the invention, the same effect as that of the fourth aspect of the invention can be achieved, and the focus can be adjusted even if there is a slight error in the mounting height of two elements having different heights in the focal direction. Therefore, a clear detection image can be obtained and adjustment with high accuracy is possible.
[0055]
According to the sixth aspect of the invention, the same effect as that of the first aspect of the invention can be obtained, and the movement stop accuracy is less affected than when the detection means (CCD camera and magnifying lens) is moved. Highly accurate adjustment is possible.
[0056]
According to the seventh aspect of the invention, the same effects as those of the first aspect of the invention can be obtained, and a plurality of fields of view can be obtained without moving the detecting means (CCD camera and magnifying lens) and moving the reflecting prism. Therefore, it is difficult to be affected by the movement stop accuracy, and a highly accurate adjustment is possible.
[0057]
According to the invention described in claim 8, while having the same effect as the invention described in claim 6 or 7, it is not necessary to have a movable part in the focal direction, and it is difficult to be influenced by errors due to the movement. It is possible to simplify the driving unit.
[0058]
According to the ninth aspect of the invention, the same effect as that of the first aspect of the invention can be achieved, and the hologram pattern of the optical element or the alignment mark attached to the optical element can be easily detected by image processing, and illumination Since it becomes difficult to be affected by the influence of the strength and the detection accuracy decrease due to the difference in parts, adjustment with high accuracy is possible.
[0059]
According to the invention described in claim 10, the same effect as that of the invention described in claim 1 can be obtained, and the position and angle can be adjusted with an alignment mark that is easy to detect instead of the hologram pattern position and angle adjustment. Since it can be detected only when polarized light is applied, it is possible to detect the position and angle with high accuracy without affecting the laser beam of the optical pickup.
[0060]
According to the eleventh aspect of the invention, the same effect as that of the tenth aspect of the invention can be obtained, and the detection can be performed without being affected by the angular deviation of the component when the detection process is performed and the image processing is performed. Therefore, adjustment with high accuracy is possible.
[0061]
According to the twelfth aspect of the present invention, the same effects as those of the first aspect of the invention can be obtained, and it becomes easy to detect the outer shape of the component when image processing is performed, and highly accurate position and angle detection can be performed. It becomes possible.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing an entire optical pickup unit adjusting and assembling apparatus to which the present invention is applied.
FIG. 2 is a perspective view showing an adjustment direction of a light emitting element, a light receiving element fixed to the light emitting element, and a hologram element according to the present invention, and a sectional view of the optical part in which both are coupled.
FIG. 3 is an explanatory view showing a method for adjusting and assembling a light emitting element, an optical component to which a light receiving element is fixed, and a hologram element according to the present invention.
FIG. 4 is a configuration diagram showing an optical system capable of detecting two fields of view by moving a plurality of prisms of the present invention.
FIG. 5 is a configuration diagram of an optical system capable of simultaneously detecting two visual fields with a plurality of prisms of the present invention.
FIG. 6 is a perspective view of an optical system composed of a plurality of reflecting prisms of the present invention and capable of simultaneously detecting multiple fields of view.
FIG. 7 is a schematic diagram illustrating adjustment of a focal direction when changing the visual field according to the present invention.
FIG. 8 is an explanatory diagram illustrating a focus position detection method based on the degree of coincidence of a detected image with a reference image according to the present invention.
FIG. 9 is a schematic diagram showing a component angle calculation method by image processing with two visual fields in the present invention.
FIG. 10 is a flowchart of adjustment assembly of an optical pickup integrated part in the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Optical component 1a Light emitting element 1b Light receiving element 1c Electrical connection part 1d Light emission point 1e Light receiving surface pattern 1f Optical component outline 2 Optical element (hologram element)
2a Hologram pattern 2b Alignment mark 2c Optical element outline 3 First gripping means 7 Connection means 9 First detection means 9a First magnifying lens 9b First CCD camera 10b, 16b Multiple reflecting prisms 11 First illumination means 12 Focus adjustment means 13 second gripping means 14 moving means 15 second detecting means 15a second magnification lens 15b first 2CCD camera 17 second illumination means 18 second polarizer 19 first polarizer 20 third lighting device

Claims

Emitting element, the position of the optical element relative to an optical component with a fixed receiving element, an adjustment assembly apparatus of the optical pickup unit to affix and adjust the angle,
A first gripping means for gripping said optical component,
And motion means driving you drive the first gripping means in the adjustment direction,
And connecting means for connecting the electrodes to the electrical connection portion of the optical component,
First detecting means for detecting an outer shape of the optical element which has been moved on to the outer shape and the optical component of the optical component,
A first illuminating means for illuminating the optical component and the optical element,
A second gripping means for gripping the optical element;
Second detection means for detecting the outer shape of the optical element;
A second illumination means for illuminating said optical element,
A moving means for moving said optical element on said optical component,
First storage means for storing a relative relationship of the outer shape of the optical component and the information detected by the first detecting means,
And a second storage means for storing a relative relationship of the outer shape information and the optical element is detected by said second detection means,
Position relative to the outer shape of the optical element of the second memory means, angle information and the adjustment target of the position relative to the optical components of the outer shape of the first storage unit, the optical component of the contour on the basis of angle information with respect to the outer shape of the optical element determining a value, the by the moving means and the optical element is moved over the optical component to the outer shape of the optical component detected by the first detection means, so that the optical components of the outer shape is the adjustment target value to the optical element An apparatus for adjusting and assembling an optical pickup unit, wherein the position and angle of the optical component are adjusted.

The position of the optical component, the angle position of the optical element, when adjusting with respect to the angle, by detecting the adjustment marks attached to the first gripping means and second gripping means, the optical component of the light emitting element put of the relative relationship adjustment mark attached to the first gripping means, and the position of the hologram pattern detected by the second detection means, the angle of the second gripping means of the light receiving surface pattern of the light emitting points and the light receiving element based on the relative relationship adjustment marks, which are, determining the adjustment target value of the adjustment marks attached to the first gripping means for adjustment mark attached to the second gripping means, the optical components by moving means an optical element to move over the position of the optical component as adjustment mark is the adjustment target value of the first gripping means for adjustment marks of the second gripping means, by adjusting the angle, before Optics of the light emitting element, the position of the light receiving element, the position of the hologram pattern of the angle the optical element, adjusting the assembling device of the optical pickup unit according to claim 1, characterized in that the adjustment to the angle.

Image switching by changing means field for detecting the optical components and the optical elements of the first detecting means and the second detecting means, the light emitting point of the light emitting element and the element angle of the optical component and a light receiving surface pattern of the light receiving element 2. The adjustment assembly apparatus for an optical pickup unit according to claim 1, wherein the pattern angle of the optical element is obtained from two points of the hologram pattern of the optical element.

When switching the field of view changing means of the first detecting means, characterized in that only the difference of the focal direction height of the light emitting element and a light receiving element provided focusing means for moving said first detecting means to the focus direction The optical pickup unit adjustment assembly apparatus according to claim 3.

That the focus adjustment to move the focus direction the first detecting means, the degree of coincidence of the detected pixels of the image stored as the image and the reference image captured by the first detecting means to adjust the focal position so as to maximize The optical pickup unit adjusting and assembling apparatus according to claim 4, wherein:

Characterized in that to allow detection of a plurality of visual field to obtain an image of the optical component and the optical element by moving said first detection means and a plurality of reflective prisms attached to a magnifying lens portion of the second detecting means The adjustment assembly apparatus for an optical pickup unit according to claim 1.

Claims by the first detecting means and the second detecting means a plurality of reflecting prisms fixed to the magnifying lens unit of a plurality of visual field to obtain an image of the optical component and the optical element is characterized in that to be able to detect simultaneously Item 2. An optical pickup unit adjustment assembly apparatus according to Item 1.

8. The optical pickup according to claim 6, wherein a detecting means capable of detecting two fields of view having different depths of focus by changing an installation distance of a pair of reflecting prisms in the plurality of reflecting prisms. Unit assembly equipment.

Wherein the position of the hologram pattern of the optical element, and a third illumination device for irradiating light polarized in the first polarizing plate as illumination for detecting an angle, the light from the third illuminating device has passed through the optical element after a transmission illumination through the second polarizing plate, adjusting the assembly apparatus for an optical pickup unit according to claim 1, characterized in that detecting the hologram pattern of the optical element by the second detection means.

Position of the hologram pattern of the optical element, in order to detect the angle, according to claim 1, characterized in that providing a plurality of alignment marks can be detected by irradiating light which is polarized during the creation of the optical element Optical pickup unit adjustment assembly equipment.

Wherein an alignment mark provided on the optical element, adjusting the assembling device of the optical pickup unit according to the adjustment marks provided in the first gripping means and second gripping means 請 Motomeko 10 characterized in that it is circular.

Wherein the outer corner portion of the optical component and the optical element, the optical components and adjustments assembling apparatus for an optical pickup unit according to claim 1, detection mark when creating the optical element is characterized in that it is facilities.