JP4213439B2

JP4213439B2 - Lens block

Info

Publication number: JP4213439B2
Application number: JP2002273663A
Authority: JP
Inventors: 志生金谷
Original assignee: Ricoh Co Ltd
Current assignee: Ricoh Co Ltd
Priority date: 2002-09-19
Filing date: 2002-09-19
Publication date: 2009-01-21
Anticipated expiration: 2022-09-19
Also published as: JP2004112480A

Description

【０００１】
【発明の属する技術分野】
本発明は、レンズブロックに関し、特に、固体撮像素子、及び、該固体撮像素子が搭載された基板、から構成される撮像素子ユニットと、レンズが固定された保持部材と、互いにＬ字型に連なる第１平面部及び第２平面部から構成される、光透過性部材から成る、中間部材と、前記撮像素子ユニットを前記第１平面部の前記第２平面部から離れた側の接着面に接着する第１接着剤と、前記保持部材を前記第２平面部の前記第１平面部から離れた側の接着面に接着する第２接着剤と、が設けられたレンズブロックに関する。
【０００２】
【従来の技術】
固体撮像素子を用いて画像を光学像として読み取る装置は、図９に示すように、物体３をレンズ２を介して固体撮像素子１に結像させて読み取っている。また、この固体撮像素子１には、複数個の微少な光電変換素子（以下、単に画素といい、通常数μｍ×数μｍの大きさからなる。）を一列に配置した１ラインの固体撮像素子１が用いられている。なお、２６は光軸である。
【０００３】
このような画像読み取り装置では、レンズ２より結像された線像を固体撮像素子１上に位置させ、なおかつ光学特性（ピント、倍率）を所定の要求精度で読み取るために、レンズ２や１ラインの固体撮像素子１の画素ライン４を、図１０に示すｘ、ｙ、ｚ、β、γの５軸方向に微動させ位置を調整する必要がある。さらに、最近ではカラー像を読み取るために、Ｒｅｄ（Ｒ）、Ｇｒｅｅｎ（Ｇ）、Ｂｌｕｅ（Ｂ）に分光感度にピークを持つ画素がＲ、Ｇ、Ｂ別に３列配列した３ラインの固体撮像素子１が用いられる場合がある。
【０００４】
そこで、固体撮像素子１を、図１０に示すｘ、ｙ、ｚ、β、γの５軸方向に微動させて位置を調整した後、固定することが可能な構造として、例えば、図１１に示すような特許文献１に記載された技術を適用したものが考えられる。
【０００５】
同図に示すように、１は固体撮像素子、５は固体撮像素子が搭載された基板、６は固体撮像素子１及び基板５から構成される撮像素子ユニット、７はレンズ２が固定されている保持部材、８は撮像素子ユニット６と保持部材７との間に介装された中間部材である。
【０００６】
この中間部材８は、互いにＬ字状に連なる２つの平面８Ａ及び８Ｂを有している。平面８Ａは、ｘｚ平面と平行であり、平面８Ｂはｘｙ平面と平行である。そして、撮像素子ユニット６の固体撮像素子１は、接着剤９Ａによって、中間部材８の平面８Ａと接着され、保持部材７は、接着剤９Ｂによって中間部材８の平面部８Ｂと接着されている。
【０００７】
以上の構成によれば、保持部材７に対して、中間部材８をｘｙ平面方向において自由に取り付けることできる。また、中間部材８に対して、撮像素子ユニット６をｘｚ平面方向において自由に取り付けることができる。つまり、撮像素子ユニット６を構成する固体撮像素子１を上述した５軸方向に微動させて位置を調整した後、保持部材７に固定することができる。
【０００８】
ところで、上述した微調整が終了し、調整した位置に撮像素子ユニット６を把持した状態で、接着剤９Ａ及び９Ｂに紫外線を照射して硬化する際に、ｙ軸方向と逆方向Ｙ２から紫外線を照射したとする。中間部材８としては、光透過性部材からなるものを使い、上記紫外線は中間部材８を介して接着剤９Ａ及び９Ｂに照射される。
【０００９】
この場合、接着剤９Ａの接着面には垂直に、接着剤９Ｂの接着面には平行に紫外線が照射される。そうすると２つの接着剤９Ａ及び９Ｂが受ける紫外線強度に差が発生してしまい、接着剤９Ａが先に硬化してしまう。ここで、撮像素子ユニット６を把持した状態で、接着剤９Ａ及び９Ｂを硬化させると、接着剤９Ａ及び９Ｂの硬化時の収縮力Ｆ₁及びＦ₂により、中間部材８は、保持部材７側及び撮像素子ユニット６側に引き寄せられる。
【００１０】
ところが、上述したように接着剤９Ａが先に硬化してしまうと、その位置で、中間部材８が固定されてしまう。このため、接着剤９Ｂの収縮力により、中間部材８を保持部材７側に引き寄せることができず、接着剤９Ｂの収縮力により保持部材７の接着面が弾性変形してしまう。そして、接着剤９Ａ及び９Ｂ硬化後に、撮像素子ユニット６の把持を外すと、保持部材７に生じた変形が元に戻る力によって、撮像素子ユニット６が動いてしまい、固体撮像素子１−レンズ２間の位置ずれが生じてしまうという問題があった。
【００１１】
【特許文献１】
特開平１０−３０９８０１号公報
【発明が解決しようとする課題】
【００１２】
そこで、本発明は、上記のような問題点に着目し、撮像素子ユニットと保持部材との間にＬ字型の中間部材が介装されたレンズブロックにおいて、撮像素子ユニットと中間部材とを接着する接着剤、及び、保持部材と中間部材とを接着する接着剤、が硬化するのに時間差が発生してしまうことを防止して、接着剤硬化による固体撮像素子とレンズ間の位置ずれを防止したレンズブロックを提供することを課題とする。
【００１７】
【課題を解決するための手段】
上記課題を解決するためになされた請求項１記載の発明は、固体撮像素子、及び、該固体撮像素子が搭載された基板、から構成される撮像素子ユニットと、レンズが固定された保持部材と、互いにＬ字型に連なる第１平面部及び第２平面部から構成される、光透過性部材から成る、中間部材と、前記撮像素子ユニットを前記第１平面部の前記第２平面部から離れた側の接着面に接着する第１接着剤と、前記保持部材を前記第２平面部の前記第１平面部から離れた側の接着面に接着する第２接着剤と、が設けられたレンズブロックであって、前記第１接着剤及び前記第２接着剤が、前記第１平面部及び前記第２平面部の各々に設けた２つの接着面の成す角度の二等分線方向から硬化光が同時に照射されて硬化されて設けられ、そして、前記第１平面部及び前記第２平面部に各々設けた２つの接着面を通り、当該２つの接着面の成す角度の二等分線方向の領域であって、かつ、前記２つの接着面より中間部材側の領域に交わる部分が光透過性となるように、前記基板が、設けられていることを特徴とするレンズブロックに存する。
【００１８】
請求項１記載の発明によれば、第１接着剤及び前記第２接着剤が、前記第１平面部及び前記第２平面部の各々に設けた２つの接着面の成す角度の二等分線方向から硬化光が同時に照射されて硬化されている。従って、２つの第１接着剤及び第２接着剤に対して二等分線方向から硬化光を照射することにより、第１接着剤及び第２接着剤は同時に硬化し、第１接着剤及び第２接着剤が硬化するのに時間差が生じてしまうことがない。また、第１平面部及び第２平面部に各々設けた２つの接着面を通り、当該２つの接着面の成す角度の二等分線方向の領域であって、かつ、２つの接着面より中間部材側の領域に交わる部分が光透過性となるように、基板が、設けられている。従って、２つの接着面のなす角の二等分線方向から硬化光を、光透過性の中間部材を介して２つの接着剤に照射する際に、基板の光透過性となっている部分を透過して接着剤に硬化光が照射されるため、基板がその硬化光を遮ってしまう恐れがない。
【００２３】
請求項２記載の発明は、固体撮像素子、及び、該固体撮像素子が搭載された基板、から構成される撮像素子ユニットと、レンズが固定された保持部材と、互いにＬ字型に連なる第１平面部及び第２平面部から構成される、光透過性部材から成る、中間部材と、前記撮像素子ユニットを前記第１平面部の前記第２平面部から離れた側の接着面に接着する第１接着剤と、前記保持部材を前記第２平面部の前記第１平面部から離れた側の接着面に接着する第２接着剤と、が設けられたレンズブロックであって、前記第１接着剤及び前記第２接着剤が、前記第１平面部及び前記第２平面部の各々に設けた２つの接着面の成す角度の二等分線方向から硬化光が同時に照射されて硬化されて設けられ、前記基板が前記固体撮像素子よりも前記保持部材から離れた側に配置されるように、前記固体撮像素子の側面が、前記第１接着剤により前記第１平面部の接着面に接着して設けられ、そして、前記第１平面部及び前記第２平面部に各々設けた２つの接着面を通り、当該２つの接着面の成す角度の二等分線方向の領域であって、かつ、前記２つの接着面より中間部材側の領域に交わる部分の前記中間部材側の表面が反射部材から成るように、前記基板が、設けられていることを特徴とするレンズブロックに存する。
【００２４】
請求項２記載の発明によれば、第１接着剤及び前記第２接着剤が、前記第１平面部及び前記第２平面部の各々に設けた２つの接着面の成す角度の二等分線方向から硬化光が同時に照射されて硬化されている。従って、２つの第１接着剤及び第２接着剤に対して二等分線方向から硬化光を照射することにより、第１接着剤及び第２接着剤は同時に硬化し、第１接着剤及び第２接着剤が硬化するのに時間差が生じてしまうことがない。また、第１平面部及び第２平面部に各々設けた２つの接着面を通り、当該２つの接着面の成す角度の二等分線方向の領域であって、かつ、２つの接着面より中間部材側の領域に交わる部分の中間部材側の表面が反射部材から成るように、基板が、設けられている。従って、硬化光を反射部材に反射させて、２つの接着面のなす角の二等分線方向から、光透過性の中間部材を介して２つの接着剤に照射すれば、基板がその硬化光を遮ってしまう恐れがない。
【００２７】
請求項３記載の発明は、固体撮像素子、及び、該固体撮像素子が搭載された基板、から構成される撮像素子ユニットと、レンズが固定された保持部材と、互いにＬ字型に連なる第１平面部及び第２平面部から構成される、光透過性部材から成る、中間部材と、前記撮像素子ユニットを前記第１平面部の前記第２平面部から離れた側の接着面に接着する第１接着剤と、前記保持部材を前記第２平面部の前記第１平面部から離れた側の接着面に接着する第２接着剤と、が設けられたレンズブロックであって、前記第１接着剤及び前記第２接着剤が、前記第１平面部及び前記第２平面部の各々に設けた２つの接着面の成す角度の二等分線方向から硬化光が同時に照射されて硬化されて設けられ、前記保持部材が、前記レンズを収容する筒型の本体部と、前記本体部から前記中間部材に向かって突起する、前記第２接着剤によって前記第２平面部に設けた接着面に接着される、突起部と、から設けられ、そして、前記第１平面部及び前記第２平面部に各々設けた２つの接着面を通り、当該２つの接着面の成す角度の二等分線方向の領域であって、かつ、前記２つの接着面より中間部材側の領域に交わらない位置に、前記本体部が、配置されていることを特徴とするレンズブロックに存する。
【００２８】
請求項３記載の発明によれば、第１接着剤及び前記第２接着剤が、前記第１平面部及び前記第２平面部の各々に設けた２つの接着面の成す角度の二等分線方向から硬化光が同時に照射されて硬化されている。従って、２つの第１接着剤及び第２接着剤に対して二等分線方向から硬化光を照射することにより、第１接着剤及び第２接着剤は同時に硬化し、第１接着剤及び第２接着剤が硬化するのに時間差が生じてしまうことがない。また、第１平面部及び第２平面部に各々設けた２つの接着面を通り、当該２つの接着面の成す角度の二等分線方向の領域であって、かつ、２つの接着面より中間部材側の領域に交わらない位置に、本体部が、配置されている。従って、２つの接着面のなす角の二等分線方向から硬化光を、光透過性の中間部材を介して２つの接着剤に照射する際に、本体部がその硬化光を遮ってしまう恐れがない。
【００２９】
請求項４記載の発明は、固体撮像素子、及び、該固体撮像素子が搭載された基板、から構成される撮像素子ユニットと、レンズが固定された保持部材と、互いにＬ字型に連なる第１平面部及び第２平面部から構成される、光透過性部材から成る、中間部材と、前記撮像素子ユニットを前記第１平面部の前記第２平面部から離れた側の接着面に接着する第１接着剤と、前記保持部材を前記第２平面部の前記第１平面部から離れた側の接着面に接着する第２接着剤と、が設けられたレンズブロックであって、前記第１接着剤及び前記第２接着剤が、前記第１平面部及び前記第２平面部の各々に設けた２つの接着面の成す角度の二等分線方向から硬化光が同時に照射されて硬化されて設けられ、前記保持部材が、前記レンズを収容する筒型の本体部と、前記本体部から前記中間部材に向かって突起する、前記第２接着剤によって前記第２平面部に設けた接着面に接着される、突起部と、から設けられ、そして、前記第１平面部及び前記第２平面部に各々設けた２つの接着面を通り、当該２つの接着面の成す角度の二等分線方向の領域であって、かつ、前記２つの接着面より中間部材側の領域に交わる部分が光透過性となるように、前記本体部が、設けられていることを特徴とするレンズブロックに存する。
【００３０】
請求項４記載の発明によれば、第１接着剤及び前記第２接着剤が、前記第１平面部及び前記第２平面部の各々に設けた２つの接着面の成す角度の二等分線方向から硬化光が同時に照射されて硬化されている。従って、２つの第１接着剤及び第２接着剤に対して二等分線方向から硬化光を照射することにより、第１接着剤及び第２接着剤は同時に硬化し、第１接着剤及び第２接着剤が硬化するのに時間差が生じてしまうことがない。また、第１平面部及び第２平面部に各々設けた２つの接着面を通り、当該２つの接着面の成す角度の二等分線方向の領域であって、かつ、２つの接着面より中間部材側の領域に交わる部分が光透過性となるように、本体部が、設けられている。従って、２つの接着面のなす角の二等分線方向から硬化光を、光透過性の中間部材を介して２つの接着剤に照射する際に、本体部の光透過性となっている部分を透過して接着剤に硬化光が照射されるため、本体部がその硬化光を遮ってしまう恐れがない。
【００３１】
請求項５記載の発明は、固体撮像素子、及び、該固体撮像素子が搭載された基板、から構成される撮像素子ユニットと、レンズが固定された保持部材と、互いにＬ字型に連なる第１平面部及び第２平面部から構成される、光透過性部材から成る、中間部材と、前記撮像素子ユニットを前記第１平面部の前記第２平面部から離れた側の接着面に接着する第１接着剤と、前記保持部材を前記第２平面部の前記第１平面部から離れた側の接着面に接着する第２接着剤と、が設けられたレンズブロックであって、前記第１接着剤及び前記第２接着剤が、前記第１平面部及び前記第２平面部の各々に設けた２つの接着面の成す角度の二等分線方向から硬化光が同時に照射されて硬化されて設けられ、前記保持部材が、前記レンズを収容する筒型の本体部と、前記本体部から前記中間部材に向かって突起する、前記第２接着剤によって前記第２平面部に設けた接着面に接着される、突起部と、から設けられ、そして、前記第１平面部及び前記第２平面部に各々設けた２つの接着面を通り、当該２つの接着面の成す角度の二等分線方向の領域であって、かつ、前記２つの接着面より中間部材側の領域に交わる部分の前記中間部材側の表面が反射部材から成るように、前記本体部が、設けられていることを特徴とするレンズブロックに存する。
【００３２】
請求項５記載の発明によれば、第１接着剤及び前記第２接着剤が、前記第１平面部及び前記第２平面部の各々に設けた２つの接着面の成す角度の二等分線方向から硬化光が同時に照射されて硬化されている。従って、２つの第１接着剤及び第２接着剤に対して二等分線方向から硬化光を照射することにより、第１接着剤及び第２接着剤は同時に硬化し、第１接着剤及び第２接着剤が硬化するのに時間差が生じてしまうことがない。また、第１平面部及び第２平面部に各々設けた２つの接着面を通り、当該２つの接着面の成す角度の二等分線方向の領域であって、かつ、２つの接着面より中間部材側の領域に交わる部分の中間部材側の表面が反射部材から成るように、本体部が、設けられている。従って、硬化光を反射部材に反射させて、２つの接着面のなす角の二等分線方向から、光透過性の中間部材を介して２つの接着剤に照射すれば、本体部がその硬化光を遮ってしまう恐れがない。
【００３５】
【発明の実施の形態】
第１実施形態
以下、本発明の実施の形態を図面に基づいて説明する。図１は、本発明のレンズブロックの一実施の形態を示す斜視図であり、図２は、図１のレンズブロックの側面図である。なお、同図において、図９〜図１１について上述した従来のレンズブロックと同等の部分には、同一符号を付してその詳細な説明は省略する。
【００３６】
図１に示すように、固体撮像素子１を保持する保持部材７は、Ｌ字型の構造であり、ｘｚ平面と平行な平面部７Ａとｘｙ平面と平行な平面部７Ｂからなる。そして、平面部７Ａには、原稿の画像を固体撮像素子１に結像させるためのレンズ２を支持するＶ溝７Ｃが設けられいる。そして、レンズ２は、このＶ溝７Ｃとレンズ押え板１０とで挟まれ、これにより、固定される。
【００３７】
一方、平面部７Ｂには、レンズ２により収束した光を固体撮像素子１上に導くための開口部７Ｄを備えている。また、２６は光軸であり、座標軸上、Ｚ方向に該当する。他に、Ｘ方向は画像読取装置における主走査方向、Ｙは副走査方向に相当する。
【００３８】
図２に示すように、固体撮像素子１は、Ｌ字状の中間部材８を介して保持部材７の平面部７Ｂに取り付けられている。また、５は、固体撮像素子１を駆動したり、また、固体撮像素子１が出力する電気信号を、電気的な処理を施した後に画像読取装置に伝送する電装品や、固体撮像素子１自体が搭載された基板である。この固体撮像素子１及び基板５から、撮像素子ユニット６が構成されている。
【００３９】
また、図３（Ａ）の第１実施形態における中間部材８付近の断面図に示すように、上述した中間部材８は、互いにＬ字状に連なる２つの平面８Ａ及び８Ｂを有している。平面８Ａは、ｘｚ平面と平行であり、平面８Ｂはｘｙ平面と平行である。そして、撮像素子ユニット６の固体撮像素子１は、紫外線硬化型接着剤（以下、接着剤）９Ａによって、中間部材８の平面８Ａと接着され、保持部材７は、接着剤９Ｂによって中間部材８の平面部８Ｂと接着されている。また、中間部材８は、光透過性部材から構成され、紫外線（＝硬化光）を透過する。
【００４０】
また、上述した基板５は、ｘｙ平面、つまり、平面８Ｂと平行に配置されている。基板５はまた、中間部材８の接着面と一点鎖線とで囲まれた領域Ｔと交わらない位置に配置されている。領域Ｔは、詳しくは、中間部材８の接着面を通り、その２つの接着面のなす角度の二等分線方向Ｙ１の領域であり、かつ、上記２つの接着面より中間部材８側の領域である。さらに、接着剤９Ａ及び９Ｂの固体撮像素子１及び保持部材７上の接着面は、鏡や、拡散反射部材といった反射部材（図示せず）から構成されている。
【００４１】
次に、上述したレンズブロックに、接着剤９Ａ及び９Ｂを硬化させるための紫外線を照射する方法について説明する。まず、紫外線の照射は、従来で説明したように、撮像素子ユニット６の位置微調整が終了し、調整した位置に撮像素子ユニット６を把持した状態で行われる。この状態で、接着剤９Ａの接着面と接着剤９Ｂの接着面とのなす角度の二等分線方向Ｙ１から、両接着面に対して同時に紫外線１１を照射する。
【００４２】
照射された紫外線１１は、光透過性の中間部材８を介して接着剤９Ａ及び９Ｂに照射される。この際に、接着剤９Ａ及び９Ｂには、同じ角度から紫外線１１が照射される、つまり、同量の紫外線１１が照射される。従って、両接着剤９Ａ及び９Ｂは同時に硬化し、両接着剤９Ａ及び９Ｂが硬化するのに時間差が生じてしまうことがない。このため、接着剤９Ａ及び９Ｂの両方が硬化するまで、中間部材８が固定されることがなく、接着剤硬化による固体撮像素子１−レンズ２間の位置ずれを防止することができる。
【００４３】
また、接着剤９Ａ及び９Ｂに照射された紫外線１１は、接着剤９Ａ及び９Ｂを透過して、さらに固体撮像素子１及び保持部材７上の反射部材からなる接着面に到達する。到達した紫外線１１は、その接着面で反射され、再び接着剤９Ａ及び９Ｂに照射されるため、接着剤９Ａ及び９Ｂの硬化時間を短くすることができる。
【００４４】
また、図１１について説明したように、基板５が領域Ｔ（図１１には図示せず）と交わる位置に配置されると、二等分線方向Ｙ１から中間部材８を介して紫外線１１を照射する際に、基板５が紫外線１１を遮ってしまう。しかしながら、第１実施形態のように、基板５を、領域Ｔと交わらない位置に配置すれば、二等分線方向Ｙ１から中間部材８を介して紫外線１１を照射する際に、基板５が紫外線１１を遮ってしまう恐れがない。
【００４５】
このため、簡単に二等分線方向Ｙ１から２つの接着面に対して同時に紫外線１１を照射することができる。なお、図３（Ｂ）に示すように、平面８Ａ及び平面８Ｂが直角に連なっていない場合にも、二等分線方向Ｙ１からの照射を適用することが考えられる。
【００４６】
第２実施形態
なお、上述した第１実施形態では、基板５を、領域Ｔと交わらない位置に配置していた。しかしながら、なんらかの事情で、基板５を領域Ｔと交わってしまう位置に配置しなければならない場合もある。そのときは、図４の第２実施形態における中間部材８付近の断面図に示すように、基板５において、少なくとも領域Ｔと交わる交差部５Ａ及び５Ｂを光透過性部材５Ｃにより構成すればよい。また、少なくとも交差部５Ａ及び５Ｂに孔を設けるようにしてもよい。
【００４７】
以上のような構成にすることにより、二等分線方向Ｙ１から紫外線１１を、光透過性の中間部材８を介して２つの接着剤９Ａ及び９Ｂに照射する際に、基板５の光透過性部材５Ｃから構成される交差部５Ａ及び５Ｂを透過して接着剤９Ａ及び９Ｂに紫外線１１が照射されるため、基板５がその紫外線１１を遮ってしまう恐れがない。
【００４８】
第３実施形態
また、図５の第３実施形態における中間部材８付近の断面図に示すように、基板５において、少なくとも交差部５Ａ及び５Ｂの中間部材８側の表面に、反射部材５Ｄを設ける構成とすることも考えられる。このような構成にすることにより、紫外線１１を反射部材５Ｄに反射させて、二等分線方向Ｙ１から、光透過性の中間部材８を介して２つの接着剤９Ａ及び９Ｂに照射することができ、基板５がその紫外線１１を遮ってしまう恐れがない。
【００４９】
第４実施形態
また、上述した第１〜３実施形態では、固体撮像素子１に中間部材８との接着面が設けられており、基板５が平面８Ｂと平行になってしまい、基板５が紫外線照射を妨げてしまうという問題が生じていた。しかしながら、図７の第４実施形態におけるレンズブロックの断面図に示すように、中間部材８において、平面８Ａをｘｙ平面と平行に、平面８Ｂをｘｚ平面と平行に配置する。そして、基板５のソルダーコート面に接着剤９Ａの接着面を設け、基板５が平面８Ａと平行になるように配置すれば、基板５と領域Ｔが交わることなく、基板５を配置することができる。
【００５０】
また、上述した第１〜３実施形態では、保持部材７は、Ｌ字型となっていた。しかしながら、保持部材７の形状としては、例えば、図６に示すように、内部にレンズ２を収納する筒型の本体部７Ｅと、中間部材８に向かって突起する突起部７Ｆとから構成されるものが考えられる。そして、突起部７Ｆに中間部材８との接着面が設けられている。この場合、上述した本体部７Ｅは、接着剤９Ａ及び９Ｂの接着面に対して、領域Ｔと交わらない位置に配置されている。以上のように構成すれば、二等分線方向Ｙ１から中間部材８を介して紫外線１１を照射する際に、本体部７Ｅが紫外線１１を遮ってしまう恐れがない。
【００５１】
第５実施形態
なお、上述した第４実施形態では、本体部７Ｅを、領域Ｔと交わらない位置に配置していた。しかしながら、なんらかの事情で、本体部７Ｅを領域Ｔと交わってしまう位置に配置しなければならない場合もある。そのときは、図７の第５実施形態におけるレンズブロックの断面図に示すように、本体部７Ｅにおいて、少なくとも領域Ｔと交わる交差部７Ｈ及び７Ｉを、光透過性部材７Ｇにより構成すればよい。また少なくとも交差部７Ｈ及び７Ｉに孔を設けるようにしてもよい。
【００５２】
以上のような構成にすることにより、二等分線方向Ｙ１から紫外線１１を、光透過性の中間部材８を介して２つの接着剤９Ａ及び９Ｂに照射する際に、本体部７Ｅの光透過性部材７Ｇとなっている交差部７Ｅ及び７Ｆを透過して接着剤９Ａ及び９Ｂに紫外線１１が照射されるため、本体部７Ｅがその紫外線を遮ってしまう恐れがない。
【００５３】
第６実施形態
また、本体部７Ｅが領域Ｔと交わるときは、図８の第６実施形態におけるレンズブロックの断面図に示すように、本体部７Ｅにおいて、交差部７Ｈ及び７Ｉの中間部材８側の表面に、反射部材７Ｊを設ける構成とすることも考えられる。このような構成にすることにより、紫外線１１を反射部材７Ｊに反射させて、二等分線方向Ｙ１から、光透過性の中間部材８を介して２つの接着剤９Ａ及び９Ｂに照射することができ、本体部７Ｅがその紫外線１１を遮ってしまう恐れがない。
【００５６】
【発明の効果】
以上説明したように、請求項１記載の発明によれば、２つの接着剤に対して同時に同量の硬化光を照射することにより、撮像素子ユニット−中間部材の接着剤と、保持部材−中間部材の接着剤との両接着剤は同時に硬化し、両接着剤が硬化するのに時間差が生じてしまうことがないので、接着剤硬化による固体撮像素子とレンズ間の位置ずれの防止が図られたレンズブロックを得ることができる。また、２つの接着面のなす角の二等分線方向から硬化光を、光透過性の中間部材を介して２つの接着剤に照射する際に、基板の光透過性となっている部分を透過して接着剤に硬化光が照射されるため、基板がその硬化光を遮ってしまう恐れがないので、簡単に、２つの接着面のなす角の二等分線方向から、中間部材を介して２つの接着面に対して同時に硬化光を照射することができるレンズブロックを得ることができる。
【００５９】
請求項２記載の発明によれば、２つの接着剤に対して同時に同量の硬化光を照射することにより、撮像素子ユニット−中間部材の接着剤と、保持部材−中間部材の接着剤との両接着剤は同時に硬化し、両接着剤が硬化するのに時間差が生じてしまうことがないので、接着剤硬化による固体撮像素子とレンズ間の位置ずれの防止が図られたレンズブロックを得ることができる。また、硬化光を反射部材に反射させて、２つの接着面のなす角の二等分線方向から、光透過性の中間部材を介して２つの接着剤に照射すれば、基板がその硬化光を遮ってしまう恐れがないので、簡単に、２つの接着面のなす角の二等分線方向から、中間部材を介して２つの接着面に対して同時に硬化光を照射することができるレンズブロックを得ることができる。
【００６１】
請求項３記載の発明によれば、２つの接着剤に対して同時に同量の硬化光を照射することにより、撮像素子ユニット−中間部材の接着剤と、保持部材−中間部材の接着剤との両接着剤は同時に硬化し、両接着剤が硬化するのに時間差が生じてしまうことがないので、接着剤硬化による固体撮像素子とレンズ間の位置ずれを防止が図られたレンズブロックを得ることができる。また、２つの接着面のなす角の二等分線方向から硬化光を、光透過性の中間部材を介して２つの接着剤に照射する際に、本体部がその硬化光を遮ってしまう恐れがないので、簡単に、２つの接着面のなす角の二等分線方向から、中間部材を介して２つの接着面に対して同時に硬化光を照射することができるレンズブロックを得ることができる。
【００６２】
請求項４記載の発明によれば、２つの接着剤に対して同時に同量の硬化光を照射することにより、撮像素子ユニット−中間部材の接着剤と、保持部材−中間部材の接着剤との両接着剤は同時に硬化し、両接着剤が硬化するのに時間差が生じてしまうことがないので、接着剤硬化による固体撮像素子とレンズ間の位置ずれを防止が図られたレンズブロックを得ることができる。また、２つの接着面のなす角の二等分線方向から硬化光を、光透過性の中間部材を介して２つの接着剤に照射する際に、本体部の光透過性となっている部分を透過して接着剤に硬化光が照射されるため、本体部がその硬化光を遮ってしまう恐れがないので、簡単に、２つの接着面のなす角の二等分線方向から、中間部材を介して２つの接着面に対して同時に硬化光を照射することができるレンズブロックを得ることができる。
【００６３】
請求項５記載の発明によれば、２つの接着剤に対して同時に同量の硬化光を照射することにより、撮像素子ユニット−中間部材の接着剤と、保持部材−中間部材の接着剤との両接着剤は同時に硬化し、両接着剤が硬化するのに時間差が生じてしまうことがないので、接着剤硬化による固体撮像素子とレンズ間の位置ずれを防止が図られたレンズブロックを得ることができる。また、硬化光を反射部材に反射させて、２つの接着面のなす角の二等分線方向から、光透過性の中間部材を介して２つの接着剤に照射すれば、本体部がその硬化光を遮ってしまう恐れがないので、簡単に、２つの接着面のなす角の二等分線方向から、中間部材を介して２つの接着面に対して同時に硬化光を照射することができるレンズブロックを得ることができる。
【図面の簡単な説明】
【図１】本発明のレンズブロックの一実施の形態を示す斜視図である。
【図２】図１のレンズブロックの側面図である。
【図３】第１実施形態における中間部材８付近の断面図である。
【図４】第２実施形態における中間部材８付近の断面図である。
【図５】第３実施形態における中間部材８付近の断面図である。
【図６】第４実施形態におけるレンズブロックの断面図である。
【図７】第５実施形態におけるレンズブロックの断面図である。
【図８】第６実施形態におけるレンズブロックの断面図である。
【図９】固体撮像素子１を用いて画像読取を行う装置の概略図である。
【図１０】図９における固体撮像素子１の位置調整方向を示す説明図である。
【図１１】固体撮像素子１を、図１０に示すｘ、ｙ、ｚ、β、γの５軸方向に微動させて位置を調整した後、固定することが可能な構造の一例を示す図である。
【符号の説明】
１固体撮像素子
２レンズ
５基板
６撮像素子ユニット
７保持部材
８中間部材
９Ａ接着剤
９Ｂ接着剤
１１紫外線（硬化光）
Ｙ１二等分線方向[0001]
BACKGROUND OF THE INVENTION
 The present invention, LesIn particular, an image sensor unit including a solid-state image sensor and a substrate on which the solid-state image sensor is mounted, a holding member to which a lens is fixed,An intermediate member made of a light transmissive member composed of a first flat surface portion and a second flat surface portion that are continuous in an L shape, and the image pickup device unit separated from the second flat surface portion of the first flat surface portion. A first adhesive for adhering to the adhesive surface on the side, and a second adhesive for adhering the holding member to the adhesive surface on the side of the second planar portion away from the first planar portion.It relates to a lens block.
[0002]
[Prior art]
As shown in FIG. 9, an apparatus that reads an image as an optical image using a solid-state image pickup device reads an object 3 by forming an image on the solid-state image pickup device 1 via a lens 2. The solid-state image sensor 1 has a single-line solid-state image sensor in which a plurality of minute photoelectric conversion elements (hereinafter simply referred to as pixels, usually having a size of several μm × several μm) are arranged in a line. 1 is used. Reference numeral 26 denotes an optical axis.
[0003]
In such an image reading apparatus, in order to position the line image formed by the lens 2 on the solid-state imaging device 1 and to read the optical characteristics (focus, magnification) with a predetermined required accuracy, the lens 2 or 1 line is used. It is necessary to finely move the pixel line 4 of the solid-state imaging device 1 in the 5-axis directions of x, y, z, β, and γ shown in FIG. 10 to adjust the position. Furthermore, recently, in order to read a color image, a three-line solid-state imaging device in which pixels having red (R), Green (G), and Blue (B) peaks in spectral sensitivity are arranged in three rows for each of R, G, and B. 1 may be used.
[0004]
Therefore, as a structure that can be fixed after the solid-state imaging device 1 is finely moved in the five-axis directions of x, y, z, β, and γ shown in FIG. The thing to which the technique described in such patent document 1 is applied can be considered.
[0005]
As shown in the figure, 1 is a solid-state imaging device, 5 is a substrate on which the solid-state imaging device is mounted, 6 is an imaging device unit composed of the solid-state imaging device 1 and the substrate 5, and 7 is a lens 2 fixed. A holding member 8 is an intermediate member interposed between the imaging element unit 6 and the holding member 7.
[0006]
The intermediate member 8 has two planes 8A and 8B that are continuous in an L shape. The plane 8A is parallel to the xz plane, and the plane 8B is parallel to the xy plane. The solid-state imaging device 1 of the imaging device unit 6 is bonded to the flat surface 8A of the intermediate member 8 with an adhesive 9A, and the holding member 7 is bonded to the flat portion 8B of the intermediate member 8 with an adhesive 9B.
[0007]
According to the above configuration, the intermediate member 8 can be freely attached to the holding member 7 in the xy plane direction. Further, the imaging element unit 6 can be freely attached to the intermediate member 8 in the xz plane direction. That is, the solid-state imaging device 1 constituting the imaging device unit 6 can be finely moved in the five-axis direction described above to adjust the position, and then fixed to the holding member 7.
[0008]
By the way, when the above-described fine adjustment is completed and the adhesive 9A and 9B are cured by irradiating the adhesives 9A and 9B with the image sensor unit 6 held at the adjusted position, the ultraviolet rays are irradiated from the direction Y2 opposite to the y-axis direction. Suppose that it was irradiated. The intermediate member 8 is made of a light transmissive member, and the ultraviolet rays are applied to the adhesives 9A and 9B through the intermediate member 8.
[0009]
In this case, ultraviolet rays are irradiated perpendicularly to the adhesive surface of the adhesive 9A and parallel to the adhesive surface of the adhesive 9B. If it does so, a difference will generate | occur | produce in the ultraviolet-ray intensity which two adhesive agents 9A and 9B receive, and adhesive agent 9A will harden | cure first. Here, when the adhesives 9A and 9B are cured in the state where the image sensor unit 6 is held, the shrinkage force F when the adhesives 9A and 9B are cured.₁And F₂Thus, the intermediate member 8 is drawn toward the holding member 7 side and the image sensor unit 6 side.
[0010]
However, as described above, when the adhesive 9A is cured first, the intermediate member 8 is fixed at that position. For this reason, the intermediate member 8 cannot be pulled toward the holding member 7 due to the contraction force of the adhesive 9B, and the adhesive surface of the holding member 7 is elastically deformed due to the contraction force of the adhesive 9B. Then, when the image sensor unit 6 is removed after the adhesives 9A and 9B are cured, the image sensor unit 6 is moved by a force that restores the deformation generated in the holding member 7, and the solid-state image sensor 1-lens 2 is moved. There has been a problem that misalignment occurs.
[0011]
[Patent Document 1]
JP-A-10-309801
[Problems to be solved by the invention]
[0012]
 Therefore, the present invention focuses on the above problems,In a lens block in which an L-shaped intermediate member is interposed between the imaging element unit and the holding member, an adhesive that bonds the imaging element unit and the intermediate member, and an adhesive that bonds the holding member and the intermediate member Agent,Prevents the time difference from curing, and prevents misalignment between the solid-state image sensor and the lens due to adhesive curing.TareIt is an object to provide a sensor block.
[0017]
[Means for Solving the Problems]
 The invention according to claim 1, which has been made in order to solve the above-described problems, includes an image sensor unit including a solid-state image sensor and a substrate on which the solid-state image sensor is mounted, a holding member to which a lens is fixed, The intermediate member made of a light transmissive member composed of a first plane portion and a second plane portion that are continuous in an L shape, and the imaging element unit are separated from the second plane portion of the first plane portion. A first adhesive for adhering to the adhesive surface on the other side, and a second adhesive for adhering the holding member to the adhesive surface on the side of the second flat surface portion away from the first flat surface portion. The block is a block, and the first adhesive and the second adhesive are cured light from a bisector of an angle formed by two adhesive surfaces provided on each of the first plane part and the second plane part. Are simultaneously irradiated and curedAnd an area in the direction of the bisector of the angle formed by the two adhesive surfaces, passing through the two adhesive surfaces respectively provided on the first plane portion and the second plane portion, and The substrate is provided so that a portion that intersects the region closer to the intermediate member than the two bonding surfaces is light transmissive.It exists in the lens block characterized by this.
[0018]
 According to the first aspect of the present invention, the bisector of the angle formed by the two adhesive surfaces provided on each of the first flat surface portion and the second flat surface portion of the first adhesive and the second adhesive. Curing light is simultaneously irradiated from the direction and cured. Accordingly, by irradiating the two first adhesives and the second adhesive with curing light from the bisector direction, the first adhesive and the second adhesive are simultaneously cured, and the first adhesive and the second adhesive are cured. There is no time difference for the two adhesives to cure.Further, it passes through the two bonding surfaces provided on the first plane portion and the second plane portion, respectively, is an area in the bisector direction of the angle formed by the two bonding surfaces, and is intermediate between the two bonding surfaces. The board | substrate is provided so that the part which cross | intersects the area | region on the member side may become a light transmittance. Accordingly, when the two adhesives are irradiated with curing light from the bisector of the angle formed by the two adhesive surfaces through the light-transmitting intermediate member, the light-transmitting portion of the substrate is removed. Since the curing light is irradiated onto the adhesive through transmission, there is no possibility that the substrate blocks the curing light.
[0023]
 Claim2The described invention includes an image pickup device unit including a solid-state image pickup device and a substrate on which the solid-state image pickup device is mounted, a holding member to which a lens is fixed, a first plane portion connected to each other in an L shape, and An intermediate member composed of a light transmissive member, composed of a second planar portion, and a first adhesive for adhering the imaging element unit to an adhesive surface of the first planar portion on the side away from the second planar portion. And a second adhesive for adhering the holding member to an adhesive surface of the second plane part away from the first plane part, the lens block comprising the first adhesive and the The second adhesive is cured by simultaneously irradiating curing light from the bisector of the angle formed by the two adhesive surfaces provided on each of the first plane part and the second plane part.The side surface of the solid-state image sensor is bonded to the adhesive surface of the first flat portion with the first adhesive so that the substrate is disposed on the side farther from the holding member than the solid-state image sensor. And an area in the direction of the bisector of the angle formed by the two adhesive surfaces passing through the two adhesive surfaces respectively provided on the first plane portion and the second plane portion, and The substrate is provided so that the surface on the intermediate member side of the portion that intersects the region on the intermediate member side from the two bonding surfaces is made of a reflective member.It exists in the lens block characterized by this.
[0024]
 Claim2According to the described invention,The first adhesive and the second adhesive are cured by simultaneously irradiating the curing light from the bisector of the angle formed by the two adhesive surfaces provided on each of the first plane part and the second plane part. Has been. Accordingly, by irradiating the two first adhesives and the second adhesive with curing light from the bisector direction, the first adhesive and the second adhesive are simultaneously cured, and the first adhesive and the second adhesive are cured. There is no time difference for the two adhesives to cure. Also,It is a region in the direction of the bisector of the angle formed by the two bonding surfaces, passing through the two bonding surfaces provided on the first flat surface portion and the second flat surface portion, respectively, and on the intermediate member side from the two bonding surfaces The substrate is provided so that the surface on the intermediate member side of the portion that intersects the region is made of a reflective member. Therefore, if the curing light is reflected by the reflecting member and irradiated to the two adhesives via the light-transmitting intermediate member from the bisector of the angle formed by the two bonding surfaces, the substrate will have its curing light. There is no fear of blocking.
[0027]
 Claim3The described invention includes an image pickup device unit including a solid-state image pickup device and a substrate on which the solid-state image pickup device is mounted, a holding member to which a lens is fixed, a first plane portion connected to each other in an L shape, and An intermediate member composed of a light transmissive member, composed of a second planar portion, and a first adhesive for adhering the imaging element unit to an adhesive surface of the first planar portion on the side away from the second planar portion. And a second adhesive for adhering the holding member to an adhesive surface of the second plane part away from the first plane part, the lens block comprising the first adhesive and the The second adhesive is cured by simultaneously irradiating the curing light from the bisector of the angle formed by the two adhesive surfaces provided on each of the first plane part and the second plane part.Provided,The holding member is bonded to a cylindrical main body portion that accommodates the lens, and an adhesive surface that protrudes from the main body portion toward the intermediate member and that is provided on the second flat surface portion by the second adhesive. And a projecting portion, and passes through two adhesive surfaces provided respectively on the first flat surface portion and the second flat surface portion, and is an area in the bisector direction of the angle formed by the two adhesive surfaces. The main body is disposed at a position that does not intersect the region on the intermediate member side from the two bonding surfaces.It exists in the lens block characterized by this.
[0028]
 Claim3According to the described invention,The first adhesive and the second adhesive are cured by simultaneously irradiating the curing light from the bisector of the angle formed by the two adhesive surfaces provided on each of the first plane part and the second plane part. Has been. Accordingly, by irradiating the two first adhesives and the second adhesive with curing light from the bisector direction, the first adhesive and the second adhesive are simultaneously cured, and the first adhesive and the second adhesive are cured. There is no time difference for the two adhesives to cure. Also,It is a region in the direction of the bisector of the angle formed by the two bonding surfaces, passing through the two bonding surfaces provided on the first flat surface portion and the second flat surface portion, respectively, and on the intermediate member side from the two bonding surfaces The main body is arranged at a position that does not intersect the area. Therefore, when the curing light is irradiated to the two adhesives via the light-transmitting intermediate member from the direction of the bisector of the angle formed by the two adhesive surfaces, the main body may block the curing light. There is no.
[0029]
 Claim4The described invention includes an image pickup device unit including a solid-state image pickup device and a substrate on which the solid-state image pickup device is mounted, a holding member to which a lens is fixed, a first plane portion connected to each other in an L shape, and An intermediate member composed of a light transmissive member, composed of a second planar portion, and a first adhesive for adhering the imaging element unit to an adhesive surface of the first planar portion on the side away from the second planar portion. And a second adhesive for adhering the holding member to an adhesive surface of the second plane part away from the first plane part, the lens block comprising the first adhesive and the The second adhesive is cured by simultaneously irradiating the curing light from the bisector of the angle formed by the two adhesive surfaces provided on each of the first plane part and the second plane part.Provided,The holding member is bonded to a cylindrical main body portion that accommodates the lens, and an adhesive surface that protrudes from the main body portion toward the intermediate member and that is provided on the second flat surface portion by the second adhesive. And a projecting portion, and passes through two adhesive surfaces provided respectively on the first flat surface portion and the second flat surface portion, and is an area in the bisector direction of the angle formed by the two adhesive surfaces. The main body portion is provided so that a portion that intersects the region closer to the intermediate member than the two bonding surfaces is light transmissive.It exists in the lens block characterized by this.
[0030]
 Claim4According to the described invention,The first adhesive and the second adhesive are cured by simultaneously irradiating the curing light from the bisector of the angle formed by the two adhesive surfaces provided on each of the first plane part and the second plane part. Has been. Accordingly, by irradiating the two first adhesives and the second adhesive with curing light from the bisector direction, the first adhesive and the second adhesive are simultaneously cured, and the first adhesive and the second adhesive are cured. There is no time difference for the two adhesives to cure. Also,It is a region in the direction of the bisector of the angle formed by the two bonding surfaces, passing through the two bonding surfaces provided on the first flat surface portion and the second flat surface portion, respectively, and on the intermediate member side from the two bonding surfaces The main body is provided so that the portion that intersects the region is light transmissive. Therefore, when the two adhesives are irradiated with curing light from the bisector of the angle formed by the two adhesive surfaces via the light-transmitting intermediate member, the portion that is light-transmitting the main body portion Since the curing light is irradiated to the adhesive through the body, there is no possibility that the main body blocks the curing light.
[0031]
 Claim5The described invention includes an image pickup device unit including a solid-state image pickup device and a substrate on which the solid-state image pickup device is mounted, a holding member to which a lens is fixed, a first plane portion connected to each other in an L shape, and An intermediate member composed of a light transmissive member, composed of a second planar portion, and a first adhesive for adhering the imaging element unit to an adhesive surface of the first planar portion on the side away from the second planar portion. And a second adhesive for adhering the holding member to an adhesive surface of the second plane part away from the first plane part, the lens block comprising the first adhesive and the The second adhesive is cured by simultaneously irradiating the curing light from the bisector of the angle formed by the two adhesive surfaces provided on each of the first plane part and the second plane part.Provided,The holding member is bonded to a cylindrical main body portion that accommodates the lens, and an adhesive surface that protrudes from the main body portion toward the intermediate member and that is provided on the second flat surface portion by the second adhesive. And a projecting portion, and passes through two adhesive surfaces provided respectively on the first flat surface portion and the second flat surface portion, and is an area in the bisector direction of the angle formed by the two adhesive surfaces. In addition, the main body is provided so that the surface on the intermediate member side of the portion that intersects the region on the intermediate member side with respect to the two bonding surfaces is made of a reflective member.It exists in the lens block characterized by this.
[0032]
 Claim5According to the described invention,The first adhesive and the second adhesive are cured by simultaneously irradiating the curing light from the bisector of the angle formed by the two adhesive surfaces provided on each of the first plane part and the second plane part. Has been. Accordingly, by irradiating the two first adhesives and the second adhesive with curing light from the bisector direction, the first adhesive and the second adhesive are simultaneously cured, and the first adhesive and the second adhesive are cured. There is no time difference for the two adhesives to cure. Also,It is a region in the direction of the bisector of the angle formed by the two bonding surfaces, passing through the two bonding surfaces provided on the first flat surface portion and the second flat surface portion, respectively, and on the intermediate member side from the two bonding surfaces The main body portion is provided so that the surface on the intermediate member side of the portion that intersects the region is made of a reflective member. Therefore, if the curing light is reflected by the reflecting member and irradiated to the two adhesives through the light-transmitting intermediate member from the bisector of the angle formed by the two bonding surfaces, the main body portion is cured. There is no risk of blocking light.
[0035]
DETAILED DESCRIPTION OF THE INVENTION
First embodiment
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of a lens block of the present invention, and FIG. 2 is a side view of the lens block of FIG. In the figure, the same parts as those of the conventional lens block described above with reference to FIGS. 9 to 11 are denoted by the same reference numerals, and detailed description thereof is omitted.
[0036]
As shown in FIG. 1, the holding member 7 that holds the solid-state imaging device 1 has an L-shaped structure, and includes a plane portion 7A parallel to the xz plane and a plane portion 7B parallel to the xy plane. The flat surface portion 7A is provided with a V-groove 7C that supports the lens 2 for forming an image of the document on the solid-state imaging device 1. The lens 2 is sandwiched between the V-groove 7C and the lens pressing plate 10 and is thereby fixed.
[0037]
On the other hand, the flat portion 7B is provided with an opening 7D for guiding the light converged by the lens 2 onto the solid-state imaging device 1. Reference numeral 26 denotes an optical axis, which corresponds to the Z direction on the coordinate axis. In addition, the X direction corresponds to the main scanning direction in the image reading apparatus, and Y corresponds to the sub scanning direction.
[0038]
As shown in FIG. 2, the solid-state imaging device 1 is attached to the flat portion 7 B of the holding member 7 via an L-shaped intermediate member 8. Reference numeral 5 denotes an electrical component that drives the solid-state image sensor 1 or transmits an electrical signal output from the solid-state image sensor 1 to the image reading apparatus after electrical processing, or the solid-state image sensor 1 itself. Is a board on which is mounted. The solid-state image sensor 1 and the substrate 5 constitute an image sensor unit 6.
[0039]
Further, as shown in the cross-sectional view of the vicinity of the intermediate member 8 in the first embodiment of FIG. 3A, the intermediate member 8 described above has two planes 8A and 8B that are continuous in an L shape. The plane 8A is parallel to the xz plane, and the plane 8B is parallel to the xy plane. The solid-state imaging device 1 of the imaging device unit 6 is bonded to the flat surface 8A of the intermediate member 8 by an ultraviolet curable adhesive (hereinafter referred to as adhesive) 9A, and the holding member 7 is bonded to the intermediate member 8 by the adhesive 9B. The flat portion 8B is bonded. The intermediate member 8 is made of a light transmissive member and transmits ultraviolet light (= curing light).
[0040]
The above-described substrate 5 is arranged in parallel with the xy plane, that is, the plane 8B. The substrate 5 is also disposed at a position that does not intersect the region T surrounded by the bonding surface of the intermediate member 8 and the one-dot chain line. More specifically, the region T passes through the bonding surface of the intermediate member 8 and is a region in the bisector direction Y1 of the angle formed by the two bonding surfaces, and is a region closer to the intermediate member 8 than the two bonding surfaces. It is. Further, the adhesive surfaces of the adhesives 9A and 9B on the solid-state imaging device 1 and the holding member 7 are constituted by a reflecting member (not shown) such as a mirror or a diffuse reflecting member.
[0041]
Next, a method for irradiating the above-described lens block with ultraviolet rays for curing the adhesives 9A and 9B will be described. First, as described above, the ultraviolet irradiation is performed in a state where fine adjustment of the position of the image sensor unit 6 is completed and the image sensor unit 6 is held at the adjusted position. In this state, ultraviolet rays 11 are simultaneously irradiated to both adhesive surfaces from the bisector Y1 of the angle formed by the adhesive surface of the adhesive 9A and the adhesive surface of the adhesive 9B.
[0042]
The irradiated ultraviolet rays 11 are applied to the adhesives 9 A and 9 B through the light transmissive intermediate member 8. At this time, the adhesives 9A and 9B are irradiated with the ultraviolet rays 11 from the same angle, that is, the same amount of the ultraviolet rays 11 are irradiated. Accordingly, the adhesives 9A and 9B are cured at the same time, and there is no time difference between the curing of the adhesives 9A and 9B. For this reason, the intermediate member 8 is not fixed until both of the adhesives 9A and 9B are cured, and the displacement between the solid-state imaging device 1 and the lens 2 due to the adhesive curing can be prevented.
[0043]
Further, the ultraviolet rays 11 irradiated to the adhesives 9A and 9B pass through the adhesives 9A and 9B, and further reach an adhesive surface made of a reflective member on the solid-state imaging device 1 and the holding member 7. The reached ultraviolet ray 11 is reflected by the adhesive surface and irradiated again to the adhesives 9A and 9B, so that the curing time of the adhesives 9A and 9B can be shortened.
[0044]
Further, as described with reference to FIG. 11, when the substrate 5 is disposed at a position intersecting with the region T (not shown in FIG. 11), the ultraviolet rays 11 are irradiated from the bisector direction Y1 through the intermediate member 8. In doing so, the substrate 5 blocks the ultraviolet rays 11. However, if the substrate 5 is arranged at a position not intersecting with the region T as in the first embodiment, the substrate 5 is exposed to the ultraviolet rays 11 when irradiated with the ultraviolet rays 11 from the bisector direction Y1 through the intermediate member 8. There is no risk of blocking 11.
[0045]
For this reason, it is possible to easily irradiate the two adhesive surfaces simultaneously with the ultraviolet rays 11 from the bisector direction Y1. As shown in FIG. 3B, it is conceivable to apply irradiation from the bisector direction Y1 even when the plane 8A and the plane 8B are not connected at right angles.
[0046]
Second embodiment
In the first embodiment described above, the substrate 5 is disposed at a position that does not intersect the region T. However, for some reason, it may be necessary to arrange the substrate 5 at a position where it intersects the region T. At that time, as shown in the cross-sectional view in the vicinity of the intermediate member 8 in the second embodiment in FIG. 4, at least the intersecting portions 5 A and 5 B that intersect with the region T may be configured by the light transmissive member 5 C. Further, holes may be provided at least in the intersecting portions 5A and 5B.
[0047]
With the above-described configuration, when the two adhesives 9A and 9B are irradiated with the ultraviolet ray 11 from the bisector direction Y1 through the light-transmitting intermediate member 8, the light-transmitting property of the substrate 5 is achieved. Since the ultraviolet rays 11 are irradiated to the adhesives 9A and 9B through the intersecting portions 5A and 5B formed of the member 5C, there is no possibility that the substrate 5 blocks the ultraviolet rays 11.
[0048]
Third embodiment
Further, as shown in the cross-sectional view in the vicinity of the intermediate member 8 in the third embodiment in FIG. 5, the substrate 5 has a configuration in which the reflecting member 5D is provided on at least the surface of the intersecting portions 5A and 5B on the intermediate member 8 side. Is also possible. With such a configuration, the ultraviolet light 11 is reflected by the reflecting member 5D, and the two adhesives 9A and 9B are irradiated from the bisector direction Y1 through the light transmissive intermediate member 8. There is no possibility that the substrate 5 blocks the ultraviolet rays 11.
[0049]
Fourth embodiment
Further, in the first to third embodiments described above, the solid-state imaging device 1 is provided with an adhesive surface with the intermediate member 8, the substrate 5 becomes parallel to the plane 8 B, and the substrate 5 prevents ultraviolet irradiation. The problem that it ends up occurred. However, as shown in the cross-sectional view of the lens block in the fourth embodiment in FIG. 7, in the intermediate member 8, the plane 8A is arranged in parallel with the xy plane, and the plane 8B is arranged in parallel with the xz plane. If the adhesive surface of the adhesive 9A is provided on the solder coat surface of the substrate 5 and the substrate 5 is disposed so as to be parallel to the plane 8A, the substrate 5 can be disposed without the region T intersecting the substrate 5. it can.
[0050]
In the first to third embodiments described above, the holding member 7 is L-shaped. However, as the shape of the holding member 7, for example, as shown in FIG. 6, it is composed of a cylindrical main body portion 7 E that houses the lens 2 therein, and a protruding portion 7 F that protrudes toward the intermediate member 8. Things can be considered. And the adhesion surface with the intermediate member 8 is provided in the projection part 7F. In this case, the above-described main body portion 7E is disposed at a position that does not intersect the region T with respect to the adhesive surfaces of the adhesives 9A and 9B. If comprised as mentioned above, when irradiating the ultraviolet-ray 11 via the intermediate member 8 from the bisector direction Y1, there is no possibility that the main-body part 7E will block the ultraviolet-ray 11. FIG.
[0051]
Fifth embodiment
In the fourth embodiment described above, the main body portion 7E is arranged at a position that does not intersect the region T. However, for some reason, it may be necessary to arrange the main body portion 7E at a position where it intersects the region T. At that time, as shown in the cross-sectional view of the lens block in the fifth embodiment of FIG. 7, in the main body portion 7E, at least the intersecting portions 7H and 7I intersecting with the region T may be configured by the light transmissive member 7G. Further, holes may be provided at least at the intersections 7H and 7I.
[0052]
With the above-described configuration, when the two adhesives 9A and 9B are irradiated with the ultraviolet ray 11 from the bisector direction Y1 via the light-transmitting intermediate member 8, the light transmission of the main body 7E is performed. Since the ultraviolet rays 11 are irradiated to the adhesives 9A and 9B through the intersecting portions 7E and 7F serving as the sex member 7G, there is no possibility that the main body portion 7E blocks the ultraviolet rays.
[0053]
Sixth embodiment
Further, when the main body portion 7E crosses the region T, as shown in the cross-sectional view of the lens block in the sixth embodiment of FIG. 8, in the main body portion 7E, on the surface of the intersecting portions 7H and 7I on the intermediate member 8 side, A configuration in which the reflecting member 7J is provided is also conceivable. With this configuration, the ultraviolet light 11 is reflected by the reflecting member 7J, and the two adhesives 9A and 9B can be irradiated from the bisector direction Y1 through the light transmissive intermediate member 8. There is no possibility that the main body 7E blocks the ultraviolet rays 11.
[0056]
【The invention's effect】
 As explained above,Claim1According to the described invention, by simultaneously irradiating two adhesives with the same amount of curing light, both adhesives of the imaging element unit-intermediate member adhesive and the holding member-intermediate member adhesive Are cured at the same time, and there is no time difference between the curing of the two adhesives. Therefore, it is possible to obtain a lens block in which the displacement between the solid-state imaging device and the lens is prevented by curing the adhesive.In addition, when the two adhesives are irradiated with curing light from the bisector direction of the angle formed by the two adhesive surfaces through the light-transmitting intermediate member, the light-transmitting portion of the substrate is Since the curing light is irradiated to the adhesive through the substrate, there is no fear that the substrate will block the curing light. Therefore, it is possible to easily pass through the intermediate member from the bisector of the angle formed by the two bonding surfaces. Thus, it is possible to obtain a lens block capable of simultaneously irradiating the two adhesive surfaces with curing light.
[0059]
 Claim2According to the described invention,By simultaneously irradiating two adhesives with the same amount of curing light, both the adhesive of the imaging element unit-intermediate member and the adhesive of the holding member-intermediate member are cured at the same time. Since a time difference does not occur when the agent is cured, a lens block can be obtained in which misalignment between the solid-state imaging device and the lens is prevented by curing the adhesive. Also,When the curing light is reflected on the reflecting member and the two adhesives are irradiated from the bisector of the angle formed by the two bonding surfaces through the light transmissive intermediate member, the substrate blocks the curing light. Therefore, it is possible to easily obtain a lens block capable of simultaneously irradiating curing light to two adhesive surfaces via an intermediate member from a bisector of an angle formed by the two adhesive surfaces. be able to.
[0061]
 Claim3According to the described invention,By simultaneously irradiating two adhesives with the same amount of curing light, both the adhesive of the imaging element unit-intermediate member and the adhesive of the holding member-intermediate member are cured at the same time. Since a time difference does not occur when the agent is cured, a lens block can be obtained in which displacement between the solid-state imaging device and the lens due to adhesive curing is prevented. Also,When the curing light is irradiated to the two adhesives through the light-transmitting intermediate member from the direction of the bisector of the angle formed by the two adhesive surfaces, there is no risk that the main body will block the curing light. Therefore, it is possible to easily obtain a lens block capable of simultaneously irradiating the two adhesive surfaces with the curing light through the intermediate member from the bisector of the angle formed by the two adhesive surfaces.
[0062]
 Claim4According to the described invention,By simultaneously irradiating two adhesives with the same amount of curing light, both the adhesive of the imaging element unit-intermediate member and the adhesive of the holding member-intermediate member are cured at the same time. Since a time difference does not occur when the agent is cured, a lens block can be obtained in which displacement between the solid-state imaging device and the lens due to adhesive curing is prevented. Also,Transmits the light-transmitting part of the main body when irradiating the two adhesives through the light-transmitting intermediate member with the curing light from the bisector of the angle formed by the two adhesive surfaces Then, since the curing light is irradiated to the adhesive, there is no possibility that the main body portion blocks the curing light. Therefore, from the direction of the bisector of the angle formed by the two bonding surfaces, it can be easily passed through the intermediate member. Thus, it is possible to obtain a lens block capable of simultaneously irradiating the two adhesive surfaces with curing light.
[0063]
 Claim5According to the described invention,By simultaneously irradiating two adhesives with the same amount of curing light, both the adhesive of the imaging element unit-intermediate member and the adhesive of the holding member-intermediate member are cured at the same time. Since a time difference does not occur when the agent is cured, a lens block can be obtained in which displacement between the solid-state imaging device and the lens due to adhesive curing is prevented. Also,When the curing light is reflected by the reflecting member and irradiated to the two adhesives through the light-transmitting intermediate member from the direction of the bisector of the angle formed by the two bonding surfaces, the main body portion emits the curing light. Since there is no risk of blocking, a lens block that can easily radiate curing light simultaneously on the two adhesive surfaces via the intermediate member from the bisector of the angle formed by the two adhesive surfaces. Obtainable.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a lens block of the present invention.
FIG. 2 is a side view of the lens block of FIG.
FIG. 3 is a cross-sectional view of the vicinity of an intermediate member 8 in the first embodiment.
FIG. 4 is a cross-sectional view of the vicinity of an intermediate member 8 in a second embodiment.
FIG. 5 is a cross-sectional view of the vicinity of an intermediate member 8 in a third embodiment.
FIG. 6 is a cross-sectional view of a lens block according to a fourth embodiment.
FIG. 7 is a sectional view of a lens block according to a fifth embodiment.
FIG. 8 is a cross-sectional view of a lens block in a sixth embodiment.
FIG. 9 is a schematic diagram of an apparatus that reads an image using the solid-state imaging device 1;
10 is an explanatory diagram showing a position adjustment direction of the solid-state imaging device 1 in FIG. 9;
11 is a diagram illustrating an example of a structure that can be fixed after the solid-state imaging device 1 is finely moved in the five-axis directions of x, y, z, β, and γ illustrated in FIG. 10 to adjust the position. is there.
[Explanation of symbols]
1 Solid-state image sensor
2 Lens
5 Substrate
6 Image sensor unit
7 Holding member
8 Intermediate member
9A Adhesive
9B Adhesive
11 Ultraviolet light (curing light)
Y1 bisector direction

Claims

An imaging element unit including a solid-state imaging element and a substrate on which the solid-state imaging element is mounted, a holding member to which a lens is fixed, and a first plane part and a second plane part that are connected to each other in an L shape. An intermediate member made of a light-transmitting member, a first adhesive that bonds the image sensor unit to an adhesive surface of the first plane portion away from the second plane portion, and the holding member A second adhesive that adheres the second planar portion to an adhesive surface on the side away from the first planar portion, and a lens block,
The first adhesive and the second adhesive are simultaneously irradiated with curing light from a bisecting direction of an angle formed by two adhesive surfaces provided on each of the first plane part and the second plane part. Hardened and provided, and
It is a region in the direction of a bisector of the angle formed by the two bonding surfaces, passing through the two bonding surfaces respectively provided on the first flat surface portion and the second flat surface portion, and from the two bonding surfaces The lens block , wherein the substrate is provided so that a portion that intersects the region on the intermediate member side is light transmissive .

An imaging element unit including a solid-state imaging element and a substrate on which the solid-state imaging element is mounted, a holding member to which a lens is fixed, and a first plane part and a second plane part that are connected to each other in an L shape. An intermediate member made of a light-transmitting member, a first adhesive that bonds the image sensor unit to an adhesive surface of the first plane portion away from the second plane portion, and the holding member A second adhesive that adheres the second planar portion to an adhesive surface on the side away from the first planar portion, and a lens block,
The first adhesive and the second adhesive are simultaneously irradiated with curing light from a bisecting direction of an angle formed by two adhesive surfaces provided on each of the first plane part and the second plane part. Hardened and provided,
The side surface of the solid-state image sensor is provided by being bonded to the adhesive surface of the first flat portion with the first adhesive so that the substrate is disposed on the side farther from the holding member than the solid-state image sensor. And
It is a region in the direction of a bisector of the angle formed by the two bonding surfaces, passing through the two bonding surfaces respectively provided on the first flat surface portion and the second flat surface portion, and from the two bonding surfaces The lens block , wherein the substrate is provided so that a surface on the intermediate member side of a portion intersecting with the region on the intermediate member side is made of a reflecting member .

An imaging element unit including a solid-state imaging element and a substrate on which the solid-state imaging element is mounted, a holding member to which a lens is fixed, and a first plane part and a second plane part that are connected to each other in an L shape. An intermediate member made of a light-transmitting member, a first adhesive that bonds the image sensor unit to an adhesive surface of the first plane portion away from the second plane portion, and the holding member A second adhesive that adheres the second planar portion to an adhesive surface on the side away from the first planar portion, and a lens block,
The first adhesive and the second adhesive are simultaneously irradiated with curing light from a bisecting direction of an angle formed by two adhesive surfaces provided on each of the first plane part and the second plane part. Hardened and provided ,
The holding member is bonded to a cylindrical main body portion that accommodates the lens, and an adhesive surface that protrudes from the main body portion toward the intermediate member and that is provided on the second flat surface portion by the second adhesive. A protrusion, and
It is a region in the direction of a bisector of the angle formed by the two bonding surfaces, passing through the two bonding surfaces respectively provided on the first flat surface portion and the second flat surface portion, and from the two bonding surfaces The lens block , wherein the main body is disposed at a position not intersecting with the region on the intermediate member side .

An imaging element unit including a solid-state imaging element and a substrate on which the solid-state imaging element is mounted, a holding member to which a lens is fixed, and a first plane part and a second plane part that are connected to each other in an L shape. An intermediate member made of a light-transmitting member, a first adhesive that bonds the image sensor unit to an adhesive surface of the first plane portion away from the second plane portion, and the holding member A second adhesive that adheres the second planar portion to an adhesive surface on the side away from the first planar portion, and a lens block,
The first adhesive and the second adhesive are simultaneously irradiated with curing light from a bisecting direction of an angle formed by two adhesive surfaces provided on each of the first plane part and the second plane part. Hardened and provided ,
The holding member is bonded to a cylindrical main body portion that accommodates the lens, and an adhesive surface that protrudes from the main body portion toward the intermediate member and that is provided on the second flat surface portion by the second adhesive. A protrusion, and
It is a region in the direction of a bisector of the angle formed by the two bonding surfaces, passing through the two bonding surfaces respectively provided on the first flat surface portion and the second flat surface portion, and from the two bonding surfaces The lens block , wherein the main body is provided so that a portion that intersects the region on the intermediate member side is light transmissive .

An imaging element unit including a solid-state imaging element and a substrate on which the solid-state imaging element is mounted, a holding member to which a lens is fixed, and a first plane part and a second plane part that are connected to each other in an L shape. An intermediate member made of a light-transmitting member, a first adhesive that bonds the image sensor unit to an adhesive surface of the first plane portion away from the second plane portion, and the holding member A second adhesive that adheres the second planar portion to an adhesive surface on the side away from the first planar portion, and a lens block,
The first adhesive and the second adhesive are simultaneously irradiated with curing light from a bisecting direction of an angle formed by two adhesive surfaces provided on each of the first plane part and the second plane part. Hardened and provided ,
The holding member is bonded to a cylindrical main body portion that accommodates the lens, and an adhesive surface that protrudes from the main body portion toward the intermediate member and that is provided on the second flat surface portion by the second adhesive. A protrusion, and
It is a region in the direction of a bisector of the angle formed by the two bonding surfaces, passing through the two bonding surfaces respectively provided on the first flat surface portion and the second flat surface portion, and from the two bonding surfaces The lens block , wherein the main body portion is provided so that a surface on the intermediate member side of a portion intersecting with the region on the intermediate member side is made of a reflecting member .