JP4373132B2 - Optical lens and method for mounting the same - Google Patents

Optical lens and method for mounting the same Download PDF

Info

Publication number
JP4373132B2
JP4373132B2 JP2003152473A JP2003152473A JP4373132B2 JP 4373132 B2 JP4373132 B2 JP 4373132B2 JP 2003152473 A JP2003152473 A JP 2003152473A JP 2003152473 A JP2003152473 A JP 2003152473A JP 4373132 B2 JP4373132 B2 JP 4373132B2
Authority
JP
Japan
Prior art keywords
flange
lens
optical
optical lens
adhesive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP2003152473A
Other languages
Japanese (ja)
Other versions
JP2004354709A (en
Inventor
敬志 伊藤
栄治 伊藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujinon Corp
Original Assignee
Fujinon Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujinon Corp filed Critical Fujinon Corp
Priority to JP2003152473A priority Critical patent/JP4373132B2/en
Publication of JP2004354709A publication Critical patent/JP2004354709A/en
Application granted granted Critical
Publication of JP4373132B2 publication Critical patent/JP4373132B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Mounting And Adjusting Of Optical Elements (AREA)
  • Lens Barrels (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、光学機器などに用いられる光学レンズおよび光学レンズの取り付け方法に関する。
【０００２】
【従来の技術】
従来の光学レンズを鏡筒に取り付けた状態を図３および図４を参照して説明する。
２つの光学レンズをマージナルコンタクトさせて鏡筒に取り付ける場合（例えば、特許文献１を参照）、図３（ａ）に示すように、鏡筒２０に嵌合した第１光学レンズ１００ａのフランジ下面の第１基準面１０３ａを鏡筒内周の凸部２１に載置して、第１光学レンズ１００ａの位置決めと光軸調整を行うとともに、鏡筒２０に嵌合した第２光学レンズ１００ｂのフランジ下面の第２基準面１０３ｂを、前記第１光学レンズ１０１ａのフランジ上面のレンズ載置面１０５に載置して、第２光学レンズ１００ｂの位置決めと光軸調整を行う。そして、第２光学レンズ１００ｂのフランジ上面の接着だまり１０４ｂに供給した接着剤で第２光学レンズ１００ｂと鏡筒２０とを接着し、第１および第２光学レンズ１００ａ，１００ｂを鏡筒２０に固定する。
つまり２つの光学レンズをマージナルコンタクトさせて鏡筒に取り付ける場合、鏡筒内に嵌合した各光学レンズのフランジ下面の基準面（第１基準面１０３ａや第２基準面１０３ｂ）を、レンズ載置部（鏡筒内周に形成した凸部２１や、下側に配置される第１光学レンズ１００ａのフランジ上面に形成したレンズ載置面１０５）に載置することによって、夫々の光学レンズの位置合わせと光軸調整を行い、フランジ上面の接着だまり１０４ｂに供給した接着剤によって、鏡筒内に光学レンズを固定していた。
【０００３】
図４は、１つの光学レンズ１００を鏡筒２０に取り付けた状態を示すものであって、鏡筒２０に嵌合した光学レンズ１００のフランジ下面の基準面１０３を鏡筒内周の凸部２１に載置することによって光学レンズ１００の位置決めと光軸調整を行うとともに、光学レンズ１００のフランジ上面の接着だまり１０４に供給した接着剤で光学レンズ１００と鏡筒２０とを接着し、光学レンズ１００を鏡筒２０に固定している。
つまり１つの光学レンズを鏡筒に取り付ける場合も、鏡筒内に嵌合した光学レンズのフランジ下面の基準面１０３を、レンズ載置部（鏡筒内周に形成した凸部２１）に載置することによって、光学レンズの位置合わせと光軸調整を行い、フランジ上面の接着だまり１０４に供給した接着剤によって、鏡筒内に光学レンズを固定する。
【０００４】
【特許文献１】
特開平８−２２０４０８号公報
【０００５】
【発明が解決しようとする課題】
しながら従来の光学レンズを鏡筒に取り付けた場合、フランジ上面の接着だまりに供給した接着剤が、レンズ外周面と鏡筒内周面の微細な隙間を伝ってフランジ下面の基準面に流れ込み、前記接着剤によってレンズ載置部に載置した基準面が浮いて光学レンズの精確な位置決めと光軸調整を阻害していた。
例えば、接着だまりに接着剤を供給した状態をあらわす図３（ｂ）に示すように、第２光学レンズ１００ｂのフランジ上面の接着だまり１０４ｂに供給した接着剤が、第２光学レンズ１００ｂの外周面と鏡筒２０の内周面の微細な隙間を伝って下方に流れ、毛細管現象によって第２光学レンズ１００ｂのフランジ下面にある第２基準面１０３ｂへ流れ込み、この第２基準面１０３ｂに流れ込んだ接着剤によって第２光学レンズ１００ｂが浮いて、第２光学レンズ１００ｂの位置決めを精確に行うことができず、光軸ずれが発生したりしていた。
なお図３（ｂ）は、図３（ａ）中のＸ部位を拡大した拡大部分断面図である。
【０００６】
【課題を解決するための手段】
そこで、この発明によれば、鏡筒に嵌合して使用する光学レンズにおいて、光学機能面の外周にあるフランジのフランジ下面に光軸と直交する平面である基準面を形成するとともに、フランジ上面にフランジの凹み部分から成る接着だまりを形成し、前記フランジ外周面の下部からフランジの下面に突出されて形成された前記基準面の外周に至る間の全周にわたった凹所であるスペーサを形成し、前記基準面をレンズ載置面に載置することによって光学レンズの位置決めと光軸調整を行うとともに、前記接着だまりに供給した接着剤によって光学レンズを鏡筒内に固定し、さらに前記スペーサにより、接着だまりに供給した接着剤が基準面に流れ込むのを防止するようにしたものである。
【０００７】
【発明の実施の形態】
以下に、この発明の好適な実施例について図面を参照にして説明する。
【０００８】
この発明による光学レンズの第１の形態について、図１に示す。
図１（ａ）の部分断面図は、光学機能面１の外周にフランジ２を形成した２つの光学レンズ（第１光学レンズ１０ａと第２光学レンズ１０ｂ）をマージナルコンタクトさせて鏡筒２０に取り付けた状態を示すものであって、第１光学レンズ１０ａのフランジ下面に形成した第１基準面３ａを鏡筒内周に形成した凸部２１に載置するとともに、第２光学レンズ１０ｂのフランジ下面に形成した第２基準面３ｂを第１光学レンズ１０ａのフランジ上面に形成したレンズ載置面５に載置し、２つの光学レンズの位置決めと光軸調整を行っている。
【０００９】
この実施例では、第１光学レンズ１０ａのフランジ外周面の嵌合部を鏡筒２０の内周面に内接させるとともに、フランジ下面の第１基準面３ａを凸部２１に載置して第１光学レンズ１０ａの位置決めと光軸調整を行い、さらに第２光学レンズ１０ｂのフランジ外周面の嵌合部を鏡筒２０の内周面に内接させるとともに、第１光学レンズ１０ａのフランジ上面のレンズ載置面５に第２基準面３ｂを載置して第２光学レンズ１０ｂの位置決めと光軸調整を行っている。
つまり夫々の光学レンズのフランジ下面に形成した基準面（第１基準面３ａや第２基準面３ｂ）をレンズ載置部（鏡筒内周に形成した凸部２１や、第１光学レンズのフランジ上面に形成したレンズ載置面５）に載置することによって、夫々の光学レンズの位置合わせと光軸調整を行っている。
【００１０】
さらに前記第２光学レンズ１０ｂには、フランジ上面に接着だまり４ｂを形成し、フランジ外周の下部全周にわたってスペーサ６ｂを形成してある。
フランジ外周の下部全周にわたって形成したスペーサ６ｂは、フランジ上面の接着だまり４ｂに供給した接着剤がフランジ下面の第２基準面３ｂに流れ込むのを防止するための手段であり、フランジ外周面の嵌合部よりも下方を凹ませるようにしてスペーサ６ｂを形成することによって、フランジ下面にある第２基準面３ｂの外周を内側に移行させたものである。
【００１１】
つまり、フランジ外周面の嵌合部とフランジ下面の第２基準面３ｂとの間に介在するスペーサ６ｂによって第２基準面３ｂの外周をレンズ中心に向かって移行させ、前記第２基準面３ｂの外周をフランジ外周面の嵌合部から遠ざけるとともに、鏡筒内周面から隔離するようにして空間（スペース）を設ける。これによって接着だまり４ｂに供給した接着剤が第２光学レンズ１０ｂの外周面と鏡筒２０の内周面の微細な隙間を伝って下方に流れても、第２基準面３ｂに接着剤が流れ込むのを防止することができる。
【００１２】
すなわち、２つの光学レンズ（第１光学レンズ１０ａと第２光学レンズ１０ｂ）を鏡筒内に嵌合し、夫々の光学レンズの位置合わせと光軸調整を行った後、第２光学レンズ１０ｂのフランジ上面の接着だまり４ｂに供給した接着剤によって第２光学レンズ１０ｂと鏡筒２０を接着して鏡筒内に２つの光学レンズを固定するにあたって、フランジ外周の下部全周にわたってスペーサ６ｂを形成した第２光学レンズ１０ｂを使用することによって、前記接着だまり４ｂに供給した接着剤が第２基準面３ｂに流れ込むのを防止することができ、光学レンズの精確な位置合わせと光軸調整を行うことができる。
【００１３】
なお図１に示す実施例では、鏡筒上部の内周口径を大きくした鏡筒（径大部を有する鏡筒）２０を使用し、この鏡筒２０の内周口径にあわせてレンズ径を設計した第１光学レンズ１０ａと第２光学レンズ１０ｂを鏡筒２０に嵌合した。
そして、鏡筒２０に形成した径大部と、第２光学レンズ１０ｂに形成したスペーサ６とによって、第２基準面３ｂの外周と鏡筒２０の内周面の間に大きな空間（スペース）を形成した。
【００１４】
図１（ｂ）は、接着だまり４ｂに接着剤を供給した状態を示すものであって、図１（ａ）中のＸ部位を拡大した拡大部分断面図である。
図１（ｂ）に示すように、第２光学レンズ１０ｂにスペーサ６ｂを形成することによって、毛細管現象によって第２光学レンズ１０ｂの外周面を伝って流れる接着剤は、第２基準面３ｂに到達するまでの道のりが長くなり、第２基準面３ｂに接着剤が流れ込むのを防止することができる。また毛細管現象によって鏡筒２０の内周面を伝って流れる接着剤は、第２基準面３ｂから離れた方向に流れ、第２基準面３ｂに到達するまでの道のりが長くなり、第２基準面３ｂに接着剤が流れ込むのを防止することができる。
さらに、第１光学レンズ１０ａの嵌合部上方から径大部が配設されるように設計した鏡筒２０を使用し、第１光学レンズ１０ａの外周面と鏡筒２０の内周面との間に凹溝を形成することによって、毛細管現象によって鏡筒２０の内周面を伝って流れる接着剤は前記凹溝に流れ、この凹溝よりも上方に位置する第２基準面３ｂに接着剤が流れ込む心配がない。
【００１５】
この実施例では、第２基準面３ｂの外周からレンズ載置面５の外周までの距離が少なくとも０．２５ｍｍ以上、レンズ載置面５からスペーサ６の上面までの距離が少なくとも０．２５ｍｍ以上となるように、第２光学レンズの外周面下部にスペーサ６を形成した。また鏡筒内周の径大部の下端から、スペーサ６の上面までの距離が０．５ｍｍ以上になるように設計し、鏡筒２０の内周面と光学レンズの外周面との間の第２基準面３ｂ付近に大きな空間（スペース）を形成した。
【００１６】
次に、この発明による光学レンズの第２の形態について、図２に示す。
図２の部分断面図は、光学機能面１の外周にフランジ２を形成した光学レンズ（１枚）を鏡筒２０に取り付けた状態を示すものであって、光学レンズ１０のフランジ下面に形成した基準面３を鏡筒内周に形成した凸部２１に載置し、光学レンズの位置決めと光軸調整を行っている。
【００１７】
この実施例では、光学レンズ１０のフランジ外周面の嵌合部を鏡筒２０の内周面に内接させるとともに、鏡筒２０の凸部２１に基準面３を載置して光学レンズ１０の位置決めと光軸調整を行っている。
つまりレンズ載置部として鏡筒内周に凸部２１を形成し、この凸部２１に光学レンズを載置することによって光学レンズの位置合わせと光軸調整を行っている。
【００１８】
さらに光学レンズ１０には、フランジ上面に接着だまり４を形成し、フランジ外周の下部全周にわたってスペーサ６を形成してある。
フランジ外周の下部全周にわたって形成したスペーサ６は、フランジ上面の接着だまり４に供給した接着剤がフランジ下面の基準面３に流れ込むのを防止するための手段であり、フランジ外周面の嵌合部よりも下方を凹ませるようにしてスペーサ６を形成することによって、フランジ下面にある基準面３の外周を内側に移行させたものである。
【００１９】
つまり、フランジ外周面の嵌合部とフランジ下面の基準面３との間に介在するスペーサ６によって基準面３の外周をレンズ中心に向かって移行させ、前記基準面３の外周をフランジ外周面の嵌合部から遠ざけるとともに、鏡筒内周面から隔離するようにして空間（スペース）を設ける。これによって接着だまり４に供給した接着剤が光学レンズ１０の外周面と鏡筒２０の内周面の微細な隙間を伝って下方に流れても、基準面３に接着剤が流れ込むのを防止することができる。
【００２０】
すなわち、光学レンズ１０を鏡筒内に嵌合し、位置合わせと光軸調整を行った後、光学レンズ１０のフランジ上面の接着だまり４に供給した接着剤によって光学レンズ１０と鏡筒２０を接着して鏡筒内に光学レンズ１０を固定するにあたって、フランジ外周の下部全周にわたってスペーサ６を形成した光学レンズ１０を使用することによって、前記接着だまり４に供給した接着剤が基準面３に流れ込むのを防止することができ、光学レンズの精確な位置合わせと光軸調整を行うことができる。
【００２１】
この実施例では、基準面３の外周から鏡筒内周面までの距離が０．２〜０．５ｍｍ、凸部２１からスペーサ６の上面までの距離が０．２〜０．５ｍｍとなるように、光学レンズ１０のフランジ外周の下部全周にわたってスペーサ６を形成した。
【００２２】
【発明の効果】
以上説明したように、この発明は、鏡筒に嵌合して使用する光学レンズにおいて、光学機能面の外周にあるフランジのフランジ下面に光軸と直交する平面である基準面を形成するとともに、フランジ上面にフランジの凹み部分から成る接着だまりを形成し、前記フランジ外周面の下部からフランジの下面に突出されて形成された前記基準面の外周に至る間の全周にわたった凹所であるスペーサを形成し、前記基準面をレンズ載置面に載置することによって光学レンズの位置決めと光軸調整を行うとともに、前記接着だまりに供給した接着剤によって光学レンズを鏡筒内に固定し、さらに前記スペーサにより、接着だまりに供給した接着剤が基準面に流れ込むのを防止するようにしたものである。スペーサを形成した光学レンズを鏡筒に取り付けることによって、光学レンズの接着だまりに供給した接着剤が基準面に流れ込むのが防止され、光学レンズの位置決めと光軸調整を精確に行うことができた。
【図面の簡単な説明】
【図１】この発明による光学レンズの取り付け方法の第１の形態を示す図。
【図２】この発明による光学レンズの取り付け方法の第２の形態を示す図。
【図３】従来技術による光学レンズの取り付け方法の第１の形態を示す図。
【図４】従来技術による光学レンズの取り付け方法の第２の形態を示す図。
【符号の説明】
１ 光学機能面
２ フランジ
３ 基準面
３ａ 第１基準面
３ｂ 第２基準面
４、４ｂ 接着だまり
５ レンズ載置面
６、６ｂ スペーサ
１０ 光学レンズ
１０ａ 第１光学レンズ
１０ｂ 第２光学レンズ
２０ 鏡筒
２１ 凸部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an optical lens used in an optical device and the like, and a method for attaching the optical lens.
[0002]
[Prior art]
A state in which the conventional optical lens is attached to the lens barrel will be described with reference to FIGS.
When two optical lenses are marginally contacted and attached to the lens barrel (see, for example, Patent Document 1), as shown in FIG. 3A, the bottom surface of the flange of the first optical lens 100a fitted to the lens barrel 20 is provided. The first reference surface 103a is placed on the convex portion 21 on the inner periphery of the lens barrel, the first optical lens 100a is positioned and the optical axis is adjusted, and the lower surface of the flange of the second optical lens 100b fitted to the lens barrel 20 is placed. The second reference surface 103b is placed on the lens placement surface 105 on the upper surface of the flange of the first optical lens 101a, and positioning and optical axis adjustment of the second optical lens 100b are performed. Then, the second optical lens 100b and the lens barrel 20 are bonded with the adhesive supplied to the adhesive pool 104b on the upper surface of the flange of the second optical lens 100b, and the first and second optical lenses 100a and 100b are fixed to the lens barrel 20. To do.
That is, when two optical lenses are marginally contacted and attached to the lens barrel, the reference surface (the first reference surface 103a or the second reference surface 103b) on the lower surface of the flange of each optical lens fitted in the lens barrel is placed on the lens. The position of each optical lens is placed on a portion (the convex portion 21 formed on the inner periphery of the lens barrel or the lens placement surface 105 formed on the upper surface of the flange of the first optical lens 100a disposed on the lower side). The optical lens was fixed in the lens barrel with the adhesive supplied to the adhesion pool 104b on the upper surface of the flange after alignment and optical axis adjustment.
[0003]
FIG. 4 shows a state in which one optical lens 100 is attached to the lens barrel 20, and the reference surface 103 on the lower surface of the flange of the optical lens 100 fitted to the lens barrel 20 is a convex portion 21 on the inner periphery of the lens barrel. The optical lens 100 and the lens barrel 20 are bonded with the adhesive supplied to the adhesive pool 104 on the upper surface of the flange of the optical lens 100. Is fixed to the lens barrel 20.
That is, even when one optical lens is attached to the lens barrel, the reference surface 103 on the lower surface of the flange of the optical lens fitted in the lens barrel is placed on the lens placement portion (the convex portion 21 formed on the inner periphery of the lens barrel). As a result, the optical lens is aligned and the optical axis is adjusted, and the optical lens is fixed in the lens barrel by the adhesive supplied to the adhesive pool 104 on the upper surface of the flange.
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 8-220408
[Problems to be solved by the invention]
However, when the conventional optical lens is attached to the lens barrel, the adhesive supplied to the adhesive pool on the upper surface of the flange flows into the reference surface on the lower surface of the flange through a fine gap between the outer peripheral surface of the lens and the inner peripheral surface of the lens barrel. The reference surface placed on the lens placement portion is lifted by the adhesive, which hinders accurate positioning and optical axis adjustment of the optical lens.
For example, as shown in FIG. 3B showing a state where the adhesive is supplied to the adhesive pool, the adhesive supplied to the adhesive pool 104b on the upper surface of the flange of the second optical lens 100b is the outer peripheral surface of the second optical lens 100b. And flows along a fine gap between the inner peripheral surface of the lens barrel 20 and flows into the second reference surface 103b on the lower surface of the flange of the second optical lens 100b by the capillary phenomenon, and flows into the second reference surface 103b. The second optical lens 100b floats due to the agent, and the second optical lens 100b cannot be accurately positioned, resulting in an optical axis shift.
FIG. 3B is an enlarged partial cross-sectional view in which the portion X in FIG. 3A is enlarged.
[0006]
[Means for Solving the Problems]
Therefore, according to the present invention, in the optical lens that is used by being fitted to the lens barrel , the reference surface that is a plane orthogonal to the optical axis is formed on the flange lower surface of the flange on the outer periphery of the optical functional surface, and the upper surface of the flange to form an adhesive reservoir consisting of recessed portion of the flange, the spacer is a recess in which the entire circumference between leading to the outer circumference of the reference surface that is formed is projected on the lower surface of the flange from the lower portion of the flange outer peripheral surface formed, with the positioning and the optical axis adjustment of the optical lens by placing the reference plane to the lens mounting surface to secure the optical lens in the lens barrel by an adhesive that is supplied to the adhesive reservoir, further wherein the spacer, in which the adhesive supplied to the adhesive reservoir is to prevent from flowing into the reference plane.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
[0008]
A first embodiment of the optical lens according to the present invention is shown in FIG.
The partial cross-sectional view of FIG. 1A shows that two optical lenses (first optical lens 10a and second optical lens 10b) having a flange 2 formed on the outer periphery of the optical functional surface 1 are marginally contacted and attached to the lens barrel 20. The first reference surface 3a formed on the lower surface of the flange of the first optical lens 10a is placed on the convex portion 21 formed on the inner periphery of the lens barrel, and the lower surface of the flange of the second optical lens 10b. The second reference surface 3b formed on the first optical lens 10a is placed on a lens placement surface 5 formed on the upper surface of the flange of the first optical lens 10a, and positioning and optical axis adjustment of the two optical lenses are performed.
[0009]
In this embodiment, the fitting portion on the outer peripheral surface of the flange of the first optical lens 10a is inscribed in the inner peripheral surface of the lens barrel 20, and the first reference surface 3a on the lower surface of the flange is placed on the convex portion 21 and the first optical lens 10a is in contact with the inner peripheral surface. The first optical lens 10a is positioned and the optical axis is adjusted, and the fitting portion of the outer peripheral surface of the flange of the second optical lens 10b is inscribed in the inner peripheral surface of the lens barrel 20, and the upper surface of the flange of the first optical lens 10a is The second reference surface 3b is placed on the lens placement surface 5 to position the second optical lens 10b and adjust the optical axis.
That is, the reference surface (the first reference surface 3a or the second reference surface 3b) formed on the lower surface of the flange of each optical lens is used as a lens mounting portion (the convex portion 21 formed on the inner periphery of the lens barrel, or the flange of the first optical lens. By mounting on the lens mounting surface 5) formed on the upper surface, alignment and optical axis adjustment of each optical lens are performed.
[0010]
Further, in the second optical lens 10b, an adhesive pool 4b is formed on the upper surface of the flange, and a spacer 6b is formed over the entire lower periphery of the outer periphery of the flange.
The spacer 6b formed over the entire lower periphery of the flange outer periphery is a means for preventing the adhesive supplied to the adhesive pool 4b on the flange upper surface from flowing into the second reference surface 3b on the flange lower surface. The outer periphery of the second reference surface 3b on the lower surface of the flange is shifted inward by forming the spacer 6b so as to be recessed below the joint portion.
[0011]
That is, the outer periphery of the second reference surface 3b is shifted toward the center of the lens by the spacer 6b interposed between the fitting portion of the flange outer peripheral surface and the second reference surface 3b of the flange lower surface, and the second reference surface 3b A space is provided so that the outer periphery is kept away from the fitting portion on the outer peripheral surface of the flange and is isolated from the inner peripheral surface of the lens barrel. As a result, even if the adhesive supplied to the adhesive pool 4b flows downward through a fine gap between the outer peripheral surface of the second optical lens 10b and the inner peripheral surface of the lens barrel 20, the adhesive flows into the second reference surface 3b. Can be prevented.
[0012]
That is, two optical lenses (the first optical lens 10a and the second optical lens 10b) are fitted into the lens barrel, and after aligning the optical lenses and adjusting the optical axis, the second optical lens 10b When the second optical lens 10b and the lens barrel 20 are bonded with the adhesive supplied to the adhesive pool 4b on the upper surface of the flange to fix the two optical lenses in the lens barrel, the spacer 6b is formed over the entire lower periphery of the outer periphery of the flange. By using the second optical lens 10b, it is possible to prevent the adhesive supplied to the adhesive pool 4b from flowing into the second reference surface 3b, and to perform accurate alignment and optical axis adjustment of the optical lens. Can do.
[0013]
In the embodiment shown in FIG. 1, a lens barrel (lens barrel having a large diameter portion) 20 having a large inner diameter at the top of the lens barrel is used, and the lens diameter is designed in accordance with the inner diameter of the lens barrel 20. The first optical lens 10a and the second optical lens 10b thus fitted were fitted into the lens barrel 20.
Then, a large space (space) is formed between the outer periphery of the second reference surface 3b and the inner peripheral surface of the lens barrel 20 by the large diameter portion formed in the lens barrel 20 and the spacer 6 formed in the second optical lens 10b. Formed.
[0014]
FIG.1 (b) shows the state which supplied the adhesive agent to the adhesion pool 4b, Comprising: It is the expanded partial sectional view which expanded the X site | part in Fig.1 (a).
As shown in FIG. 1B, by forming the spacer 6b on the second optical lens 10b, the adhesive flowing along the outer peripheral surface of the second optical lens 10b by capillary action reaches the second reference surface 3b. It is possible to prevent the adhesive from flowing into the second reference surface 3b by increasing the distance to the end. Further, the adhesive flowing along the inner peripheral surface of the lens barrel 20 by the capillary phenomenon flows in a direction away from the second reference surface 3b, and the path to reach the second reference surface 3b becomes long, and the second reference surface It is possible to prevent the adhesive from flowing into 3b.
Furthermore, the lens barrel 20 designed so that the large diameter portion is disposed from above the fitting portion of the first optical lens 10a is used, and the outer peripheral surface of the first optical lens 10a and the inner peripheral surface of the lens barrel 20 are arranged. By forming the concave groove therebetween, the adhesive flowing along the inner peripheral surface of the lens barrel 20 by capillary action flows into the concave groove, and the adhesive is applied to the second reference surface 3b positioned above the concave groove. There is no worry about flowing in.
[0015]
In this embodiment, the distance from the outer periphery of the second reference surface 3b to the outer periphery of the lens placement surface 5 is at least 0.25 mm or more, and the distance from the lens placement surface 5 to the upper surface of the spacer 6 is at least 0.25 mm or more. The spacer 6 was formed in the lower part of the outer peripheral surface of the second optical lens. In addition, the distance from the lower end of the large-diameter portion of the inner periphery of the lens barrel to the upper surface of the spacer 6 is designed to be 0.5 mm or more, and the first between the inner peripheral surface of the lens barrel 20 and the outer peripheral surface of the optical lens is designed. 2 A large space (space) was formed in the vicinity of the reference surface 3b.
[0016]
Next, a second embodiment of the optical lens according to the present invention is shown in FIG.
The partial cross-sectional view of FIG. 2 shows a state in which an optical lens (one piece) having a flange 2 formed on the outer periphery of the optical functional surface 1 is attached to the lens barrel 20 and formed on the lower surface of the flange of the optical lens 10. The reference surface 3 is placed on the convex portion 21 formed on the inner periphery of the lens barrel, and the optical lens is positioned and the optical axis is adjusted.
[0017]
In this embodiment, the fitting portion of the outer peripheral surface of the flange of the optical lens 10 is inscribed in the inner peripheral surface of the lens barrel 20, and the reference surface 3 is placed on the convex portion 21 of the lens barrel 20. Positioning and optical axis adjustment are performed.
In other words, the convex portion 21 is formed on the inner periphery of the lens barrel as the lens placement portion, and the optical lens is placed on the convex portion 21 to align the optical lens and adjust the optical axis.
[0018]
Further, in the optical lens 10, an adhesive pool 4 is formed on the upper surface of the flange, and a spacer 6 is formed over the entire lower periphery of the outer periphery of the flange.
The spacer 6 formed over the entire lower periphery of the outer periphery of the flange is a means for preventing the adhesive supplied to the adhesive pool 4 on the upper surface of the flange from flowing into the reference surface 3 on the lower surface of the flange. The outer periphery of the reference surface 3 on the lower surface of the flange is shifted inward by forming the spacer 6 so as to be recessed downward.
[0019]
That is, the outer periphery of the reference surface 3 is shifted toward the center of the lens by the spacer 6 interposed between the fitting portion of the flange outer peripheral surface and the reference surface 3 of the lower surface of the flange, and the outer periphery of the reference surface 3 is changed to the flange outer peripheral surface. A space is provided so as to be away from the fitting portion and to be isolated from the inner peripheral surface of the lens barrel. This prevents the adhesive from flowing into the reference surface 3 even if the adhesive supplied to the adhesive pool 4 flows downward through a fine gap between the outer peripheral surface of the optical lens 10 and the inner peripheral surface of the lens barrel 20. be able to.
[0020]
That is, after the optical lens 10 is fitted in the lens barrel, alignment and optical axis adjustment are performed, the optical lens 10 and the lens barrel 20 are bonded by the adhesive supplied to the adhesive pool 4 on the upper surface of the flange of the optical lens 10. Then, when the optical lens 10 is fixed in the lens barrel, the adhesive supplied to the adhesive pool 4 flows into the reference surface 3 by using the optical lens 10 in which the spacer 6 is formed over the entire lower periphery of the outer periphery of the flange. Therefore, accurate alignment and optical axis adjustment of the optical lens can be performed.
[0021]
In this embodiment, the distance from the outer periphery of the reference surface 3 to the inner peripheral surface of the lens barrel is 0.2 to 0.5 mm, and the distance from the convex portion 21 to the upper surface of the spacer 6 is 0.2 to 0.5 mm. The spacer 6 was formed over the entire lower periphery of the outer periphery of the flange of the optical lens 10.
[0022]
【The invention's effect】
As described above, according to the present invention, in the optical lens used by being fitted to the lens barrel , a reference surface that is a plane orthogonal to the optical axis is formed on the flange lower surface of the flange on the outer periphery of the optical function surface, and An adhesive pool consisting of a recessed portion of the flange is formed on the upper surface of the flange, and is a recess extending over the entire circumference from the lower part of the outer peripheral surface of the flange to the outer periphery of the reference surface formed by projecting to the lower surface of the flange. forming a spacer, together with the positioning and the optical axis adjustment of the optical lens by placing the reference plane to the lens mounting surface to secure the optical lens in the lens barrel by an adhesive that is supplied to the adhesive reservoir, Further, the spacer prevents the adhesive supplied to the adhesive pool from flowing into the reference surface . By attaching the optical lens with spacers to the lens barrel, it was possible to prevent the adhesive supplied to the adhesive pool of the optical lens from flowing into the reference surface, and to accurately position the optical lens and adjust the optical axis. .
[Brief description of the drawings]
FIG. 1 is a diagram showing a first embodiment of an optical lens mounting method according to the present invention.
FIG. 2 is a diagram showing a second embodiment of the optical lens mounting method according to the present invention.
FIG. 3 is a diagram showing a first form of a conventional method for attaching an optical lens.
FIG. 4 is a view showing a second embodiment of a conventional method for attaching an optical lens.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Optical function surface 2 Flange 3 Reference surface 3a 1st reference surface 3b 2nd reference surface 4, 4b Adhesion pool 5 Lens mounting surface 6, 6b Spacer 10 Optical lens 10a First optical lens 10b Second optical lens 20 Lens tube 21 Convex

Claims (4)

鏡筒に嵌合して使用する光学レンズにおいて、
光学機能面の外周にあるフランジのフランジ下面に光軸と直交する平面である基準面を形成するとともに、フランジ上面にフランジの凹み部分から成る接着だまりを形成し、
前記フランジ外周面の下部からフランジの下面に突出されて形成された前記基準面の外周に至る間の全周にわたった凹所であるスペーサを形成し、前記基準面をレンズ載置面に載置することによって光学レンズの位置決めと光軸調整を行うとともに、前記接着だまりに供給した接着剤によって光学レンズを鏡筒内に固定し、
さらに前記スペーサにより、接着だまりに供給した接着剤が基準面に流れ込むのを防止するように構成したことを特徴とする光学レンズ。In the optical lens used by fitting to the lens barrel,
To form a reference plane is a plane perpendicular to the optical axis to the lower flange surface of the flange on the outer periphery of the optical functional surface, the adhesive lumps and Rio form consisting recessed portion of the flange to the upper flange surface,
The spacers are formed a recess in which the entire circumference between leading from the lower part of the flange outer peripheral surface on the outer periphery of the reference plane formed is projected on the lower surface of the flange, placing the reference plane to the lens mounting surface It performs positioning and optical axis adjustment of the optical lens by location, to secure the optical lens in the lens barrel by an adhesive supplied to the Ri the adhesive lumps,
Further by the spacer, optical lens, characterized in that the adhesive supplied to the Ri adhesive lumps are configured to prevent the flow into the reference plane. 光学機能面の外周にフランジを形成した光学レンズを鏡筒に取り付けるにあたって、
フランジ下面に形成した光軸と直交する平面である基準面と、フランジ上面に形成したフランジの凹み部分からなる接着だまりと、前記フランジ外周面の下部からフランジの下面に突出されて形成された前記基準面の外周に至る間の全周にわたった凹所であるスペーサとを備える光学レンズを鏡筒に嵌合し、
前記基準面をレンズ載置面に載置して光学レンズの位置決めと光軸調整を行うとともに、
前記接着だまりに供給した接着剤によって鏡筒内に光学レンズを固定し、
さらに前記スペーサによって、前記接着だまりに供給した接着剤が前記基準面に流れ込むのを防止することを特徴とする光学レンズの取り付け方法。In mounting the optical lens barrel forming the flange on the outer periphery of the optical functional surface,
And the reference plane is a plane perpendicular to the optical axis formed in the lower flange surface, the adhesive lumps consisting recessed portion of the flange formed on the upper flange surface litho, formed protruded on the lower surface of the flange from the lower portion of the flange outer peripheral surface fitted to the barrel of the optical lens and a space Sa is the total recess across the circumference between leading to the outer periphery of the reference plane,
It performs positioning and optical axis adjustment of the optical lens by mounting the reference surface on the lens mounting surface,
An optical lens fixed to the lens barrel by an adhesive supplied to the Ri the adhesive lumps,
Moreover the the space Sa Accordingly, mounting method of optical lenses adhesive supplied to the adhesive reservoir is characterized by preventing from flowing onto the reference surface. 鏡筒内周に形成した凸部に基準面を載置し、光学レンズの位置決めと光軸調整を行うことを特徴とする請求項２に記載の光学レンズの取り付け方法。 3. The method of attaching an optical lens according to claim 2 , wherein a reference surface is placed on a convex portion formed on the inner periphery of the lens barrel, and the optical lens is positioned and the optical axis is adjusted. 光学機能面の外周にフランジを形成した２つの光学レンズをマージナルコンタクトさせて鏡筒に取り付けるにあたって、
フランジ下面に形成した第１基準面と、フランジ上面に形成したレンズ載置面とを備える第１光学レンズを鏡筒に嵌合するとともに、フランジ下面に形成した光軸と直交する平面である第２基準面と、フランジ上面に形成したフランジの凹み部分から成る接着だまりと、前記フランジ外周面の下部からフランジの下面に突出されて形成された前記基準面の外周に至る間の全周にわたった凹所であるスペーサとを備える第２光学レンズを鏡筒に嵌合し、
前記凸部に第１基準面を載置して第１光学レンズの位置決めと光軸調整を行うとともに、前記レンズ載置面に第２基準面を載置して第２光学レンズの位置決めと光軸調整を行い、
前記接着だまりに供給した接着剤によって第２光学レンズと鏡筒とを接着して２つの光学レンズを鏡筒内に固定し、
さらに前記スペーサによって、前記接着だまりに供給した接着剤が第２基準面に流れ込むのを防止することを特徴とする光学レンズの取り付け方法。When attached to the barrel by marginal contact two optical lenses to form a flange on the outer periphery of the optical functional surface,
A first reference surface formed on the flange lower surface, with fitting the first optical lens and a lens mounting surface formed on the flange upper surface to the barrel, is a plane perpendicular to the optical axis formed in the lower flange surface whole circumference between leading and the second reference surface, the adhesive lumps litho consisting recessed portion of the flange formed on the upper flange surface, the outer periphery of the reference plane formed is projected on the lower surface of the flange from the lower portion of the flange outer peripheral surface a second optical lens fitted in the barrel and a space Sa is a recess that over,
Performs positioning and the optical axis adjustment of the first optical lens is placed a first reference surface on the convex portion, the positioning of the second optical lens is placed a second reference surface on said lens mounting face And adjust the optical axis,
The adhesive lumps by an adhesive supplied to the SQLDESC_BASE_TABLE_NAME This bonds the second optical lens and the lens barrel to secure the two optical lens in a lens barrel,
Moreover the the space Sa Accordingly, mounting method of an optical lens, characterized in that to prevent the adhesive supplied to the adhesive reservoir is Komu is flow to the second reference plane.
JP2003152473A 2003-05-29 2003-05-29 Optical lens and method for mounting the same Expired - Fee Related JP4373132B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003152473A JP4373132B2 (en) 2003-05-29 2003-05-29 Optical lens and method for mounting the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003152473A JP4373132B2 (en) 2003-05-29 2003-05-29 Optical lens and method for mounting the same

Publications (2)

Publication Number Publication Date
JP2004354709A JP2004354709A (en) 2004-12-16
JP4373132B2 true JP4373132B2 (en) 2009-11-25

Family

ID=34047686

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003152473A Expired - Fee Related JP4373132B2 (en) 2003-05-29 2003-05-29 Optical lens and method for mounting the same

Country Status (1)

Country Link
JP (1) JP4373132B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6640457B2 (en) * 2015-03-26 2020-02-05 マクセル株式会社 In-vehicle photographing lens unit and camera module
KR102400658B1 (en) * 2015-07-27 2022-05-20 엘지이노텍 주식회사 Camera Module
TWI640807B (en) * 2017-02-23 2018-11-11 玉晶光電股份有限公司 Optical lens, assembling method thereof, and lens barrel

Also Published As

Publication number Publication date
JP2004354709A (en) 2004-12-16

Similar Documents

Publication Publication Date Title
TWI505704B (en) Method for manufacturing camera module and camera module
JP4959183B2 (en) Photography lens and optical apparatus using the photography lens
JP4880920B2 (en) Device comprising a micro-optical component arranged on a substrate, method for aligning the device and optical system comprising the device
US20070177757A1 (en) Loudspeaker
JP2006101488A (en) Camera module
JP4373132B2 (en) Optical lens and method for mounting the same
JP3834816B2 (en) Objective lens unit
JPH05113529A (en) Lens holding device
TWI694269B (en) Lens barrel, lens-barrel wafer, and method for forming a lens barrel
JP2006162979A (en) Lens alignment fixing method and lens alignment fixing apparatus
JP3696802B2 (en) Micro lens and optical module
JP2001160229A5 (en)
JP2001208945A (en) Device and method for supporting optical member with little deformation
JP2019110227A (en) Attachment tool, mounting device with the same, and mounting method
JP2008241838A (en) Compound lens and method of manufacturing the same
JP3434103B2 (en) Work fixing structure and mounting structure of solid-state imaging device in image reading device
JPH0360404B2 (en)
JP4219677B2 (en) Manufacturing method of optical device
JP4207522B2 (en) Microlens array and its manufacturing method
TWI773268B (en) How to fix the frame
JP7046889B2 (en) Lens drive device, camera device and electronic device
JPH08153772A (en) Method for aligning substrate at substrate sticking time
JP4088713B2 (en) Optical element, mounting method thereof, and optical module
US8578998B2 (en) Adhesive bonding apparatus
JP3734174B2 (en) Optical device and manufacturing method thereof

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20060323

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20081203

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20090528

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20090721

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20090825

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20090903

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120911

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Ref document number: 4373132

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120911

Year of fee payment: 3

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313113

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120911

Year of fee payment: 3

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130911

Year of fee payment: 4

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313113

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313113

R371 Transfer withdrawn

Free format text: JAPANESE INTERMEDIATE CODE: R371

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees