JP2000275494A - Lens support structure - Google Patents
Lens support structureInfo
- Publication number
- JP2000275494A JP2000275494A JP11085569A JP8556999A JP2000275494A JP 2000275494 A JP2000275494 A JP 2000275494A JP 11085569 A JP11085569 A JP 11085569A JP 8556999 A JP8556999 A JP 8556999A JP 2000275494 A JP2000275494 A JP 2000275494A
- Authority
- JP
- Japan
- Prior art keywords
- lens
- lens barrel
- guide shaft
- holding frame
- optical axis
- 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.)
- Pending
Links
Landscapes
- Lens Barrels (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はレンズの支持構造に
係り、特にレンズ鏡筒内に設置されたガイド軸に案内さ
れるレンズの支持構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens support structure, and more particularly, to a lens support structure guided by a guide shaft installed in a lens barrel.
【０００２】[0002]
【従来の技術】テレビカメラ等のレンズ鏡筒において、
レンズ鏡筒内に光軸に沿って数本のガイド軸が設けら
れ、このガイド軸によりレンズ保持枠が光軸方向に案内
されると共に、レンズ保持枠の一部がモータによって回
動する送りネジに螺合され、送りネジの回転によりレン
ズ保持枠が光軸方向に移動されるように構成されたもの
がある。2. Description of the Related Art In a lens barrel of a television camera or the like,
Several guide shafts are provided along the optical axis in the lens barrel. The guide shaft guides the lens holding frame in the optical axis direction, and a part of the lens holding frame is rotated by a motor. And the lens holding frame is moved in the optical axis direction by rotation of the feed screw.
【０００３】従来、このようなレンズ鏡筒のガイド軸
は、例えば、ガイド軸の後端がレンズ鏡筒に一体形成さ
れた支持枠に支持され、ガイド軸の前端がレンズ鏡筒に
ネジにより固定される押さえ部材によって支持されるよ
うになっている。レンズ鏡筒を組み立てる際には、ま
ず、押さえ板を取り外した状態でレンズが装着されたレ
ンズ保持枠をレンズ鏡筒内に前方から挿入する。続いて
ガイド軸を前方から差し込み、ガイド軸にレンズ保持枠
を係合させると共にガイド軸の後端を支持枠に固定す
る。次に、押さえ部材をレンズ鏡筒内に前方から挿入し
てガイド軸の前端をその押さえ部材の孔に挿入すると共
に、ガイド軸が光軸方向に一致するように押さえ部材を
前後上下左右に動かして軸合わせを行いながら押さえ部
材の固定位置を位置決めしてネジにより固定する。Conventionally, a guide shaft of such a lens barrel has, for example, a rear end of the guide shaft supported by a support frame integrally formed with the lens barrel, and a front end of the guide shaft fixed to the lens barrel by screws. The supporting member is supported by the pressing member. When assembling the lens barrel, first, the lens holding frame on which the lens is mounted is inserted into the lens barrel from the front with the holding plate removed. Subsequently, the guide shaft is inserted from the front, the lens holding frame is engaged with the guide shaft, and the rear end of the guide shaft is fixed to the support frame. Next, insert the holding member from the front into the lens barrel, insert the front end of the guide shaft into the hole of the holding member, and move the holding member back and forth, up, down, left and right so that the guide shaft is aligned with the optical axis direction. While holding down the axis, the fixing position of the holding member is positioned and fixed with screws.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上述の
ように押さえ部材を用いてガイド軸を支持すると、押さ
え部材の固定位置によってガイド軸の方向が光軸の方向
とずれを生ずるおそれがあった。このようなずれは光学
性能の低下を招くため好ましくない。本発明はこのよう
な事情に鑑みてなされたもので、レンズ鏡筒の組み立て
の際に、ガイド軸を光軸方向に一致させるための軸合わ
せを不要にし、組み立てを容易にするレンズの支持構造
を提供することを目的とする。However, when the guide shaft is supported using the holding member as described above, there is a possibility that the direction of the guide shaft may be shifted from the direction of the optical axis depending on the fixing position of the holding member. Such a shift is not preferable because it causes a decrease in optical performance. The present invention has been made in view of such circumstances, and when assembling a lens barrel, a lens support structure that eliminates the need for axis alignment for aligning a guide axis in the optical axis direction and facilitates assembly. The purpose is to provide.
【０００５】[0005]
【課題を解決するための手段】本発明は前記目的を達成
するために、レンズ鏡筒内に配置されるレンズのレンズ
保持枠をガイド軸により光軸方向に案内するレンズの支
持構造において、前記レンズ鏡筒の側面に前記レンズ保
持枠をレンズ鏡筒内に挿入する開口を設けると共に、前
記ガイド軸が光軸と平行となるように前記ガイド軸の前
端及び後端を支持する支持孔を前記レンズ鏡筒に予め一
体形成し、前記開口からレンズ保持枠をレンズ鏡筒内に
挿入し、その後ガイド軸をいずれか一方の支持孔から挿
入してレンズ保持枠を支持させ、他方の支持孔に支持さ
れたガイド軸の端部を止め具で固定することを特徴とし
ている。According to the present invention, there is provided a lens support structure for guiding a lens holding frame of a lens disposed in a lens barrel in a direction of an optical axis by a guide shaft. An opening for inserting the lens holding frame into the lens barrel is provided on a side surface of the lens barrel, and a support hole for supporting a front end and a rear end of the guide shaft is provided so that the guide axis is parallel to the optical axis. The lens holding frame is integrally formed in advance in the lens barrel, the lens holding frame is inserted into the lens barrel from the opening, and then the guide shaft is inserted from one of the support holes to support the lens holding frame, and the other support hole is inserted. The end of the supported guide shaft is fixed with a stopper.
【０００６】本発明によれば、ガイド軸の両端を支持す
る支持孔をレンズ鏡筒に一体形成するようにしたため、
レンズ鏡筒の組み立ての際にガイド軸を軸合わせを行わ
なくてもガイド軸を光軸に一致させることができ、組み
立てが容易になると共に、製品毎の光学性能のばらつき
を防止することができる。According to the present invention, the support holes for supporting both ends of the guide shaft are formed integrally with the lens barrel.
The guide axis can be made coincident with the optical axis without the need to align the guide axis when assembling the lens barrel. This facilitates assembly and prevents variations in optical performance among products. .
【０００７】[0007]
【発明の実施の形態】以下添付図面に従って本発明に係
るレンズの支持構造の好ましい実施の形態について説明
する。図１は、本発明が適用されたレンズ鏡筒の一部を
示した側面断面図である。同図に示すようにレンズ鏡筒
１０（以下、鏡筒１０という）内には、フォーカスレン
ズやズームレンズ等の移動可能なレンズ（群）１２が配
設される。レンズ１２は図２に示すような円筒状のレン
ズ保持枠１４に保持され、レンズ保持枠１４の上部に
は、鏡筒１０上部の開口１０Ａに突出する係合部１６が
形成される。係合部１６には、光軸方向に貫通した挿通
孔１６Ａが形成され、この挿通孔１６Ａにはレンズ鏡筒
１０に配設されたガイド軸１８が挿通される。従って、
レンズ保持枠１４はガイド軸１８に移動自在に支持され
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a lens support structure according to the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a side sectional view showing a part of a lens barrel to which the present invention is applied. As shown in FIG. 1, a movable lens (group) 12 such as a focus lens and a zoom lens is provided in a lens barrel 10 (hereinafter, referred to as a barrel 10). The lens 12 is held by a cylindrical lens holding frame 14 as shown in FIG. 2, and an engaging portion 16 is formed above the lens holding frame 14 so as to protrude into an opening 10 </ b> A above the lens barrel 10. The engaging portion 16 is formed with an insertion hole 16A penetrating in the optical axis direction, and a guide shaft 18 provided in the lens barrel 10 is inserted into the insertion hole 16A. Therefore,
The lens holding frame 14 is movably supported by a guide shaft 18.
【０００８】また、レンズ保持枠１４の下部には、鏡筒
１０下部の開口１０Ｂに突出する係合部２０が形成され
る。係合部２０には、垂直方向に切り込まれた溝２０Ａ
が形成され、この溝２０Ａにはガイド軸２２が嵌合され
る。従って、ガイド軸２２により光軸方向に対して垂直
な方向へのレンズ保持枠１４の揺動が規制され、上記ガ
イド軸１８とこのガイド軸２２によってレンズ１２及び
レンズ保持枠１４が光軸方向に移動自在に支持される。
尚、ガイド軸２２を配設する代わりに、鏡筒１０に光軸
方向の溝を形成し、その溝にレンズ保持枠１４の係合部
２０を係合させるようにしてもよい。An engagement portion 20 is formed below the lens holding frame 14 so as to project into an opening 10B below the lens barrel 10. The engaging portion 20 has a groove 20A cut in a vertical direction.
Are formed, and the guide shaft 22 is fitted into the groove 20A. Accordingly, the swinging of the lens holding frame 14 in the direction perpendicular to the optical axis direction is restricted by the guide shaft 22, and the lens 12 and the lens holding frame 14 are moved in the optical axis direction by the guide shaft 18 and the guide shaft 22. It is movably supported.
Instead of providing the guide shaft 22, a groove in the optical axis direction may be formed in the lens barrel 10, and the engaging portion 20 of the lens holding frame 14 may be engaged with the groove.
【０００９】上記レンズ保持枠１４の上端にはコマ２４
が連結され、コマ２４に貫通形成されたネジ孔には、送
りネジ２６が螺合される。送りネジ２６の一端は枠部材
２８に回動自在に支持されると共に、他端はモータ３０
に連結される。従って、モータ３０が駆動されると送り
ネジ２６が回動され、コマ２４が光軸方向に移動される
と共に、これと連動してレンズ保持枠１４が光軸方向に
移動される。At the upper end of the lens holding frame 14, a frame 24 is provided.
Are connected, and a feed screw 26 is screwed into a screw hole formed through the top 24. One end of the feed screw 26 is rotatably supported by the frame member 28, and the other end is a motor 30.
Linked to Accordingly, when the motor 30 is driven, the feed screw 26 is rotated, and the top 24 is moved in the optical axis direction, and the lens holding frame 14 is moved in the optical axis direction in conjunction with this movement.
【００１０】上記ガイド軸１８は、鏡筒１０の開口１０
Ａにおいて鏡筒１０に一体形成された前側支持部３２と
後側支持部３４によって支持される。上記ガイド軸２２
についても同様に、鏡筒１０の開口１０Ｂにおいて鏡筒
１０に一体形成された前側支持部３６と後側支持部３８
によって支持される。各前側支持部３２、３６には、各
ガイド軸１８、２２の前端の縮径部１８Ａ、２２Ａが嵌
合される孔３２Ａ、３６Ａが形成され（図３の３−３断
面図参照）、一方、各後側支持部３４、３８には各ガイ
ド軸１８、２２の後端が嵌合されると共に、各ガイド軸
１８、２２を後方から図示する位置に挿入する挿入孔３
４Ａ、３８Ａが形成される（図４の４−４断面図参
照）。従って、各ガイド軸１８、２２は、各挿入孔３４
Ａ、３８Ａの後方から挿入されて前端の縮径部１８Ａ、
２２Ａが孔３２Ａ、３６Ａに嵌合されると、それぞれ孔
３２Ａ、３６Ａと挿入孔３４Ａ、３８Ａとで支持される
と共に、光軸と平行に位置決めされる。これにより、鏡
筒１０の成形の段階で孔３２Ａ、３６Ａ及び挿入孔３４
Ａ、３８Ａの位置により各ガイド軸１８、２２の軸方向
が適切に決められ、組み立ての段階で各ガイド軸１８、
２２の軸合わせを行う必要がなくなる。The guide shaft 18 is connected to the opening 10 of the lens barrel 10.
At A, it is supported by the front support portion 32 and the rear support portion 34 integrally formed with the lens barrel 10. Guide shaft 22
Similarly, at the opening 10B of the lens barrel 10, the front support part 36 and the rear support part 38 formed integrally with the lens barrel 10 are formed.
Supported by Holes 32A, 36A are formed in the front support portions 32, 36, in which the reduced diameter portions 18A, 22A at the front ends of the guide shafts 18, 22 are fitted (see section 3-3 in FIG. 3). The rear ends of the guide shafts 18 and 22 are fitted into the rear support portions 34 and 38, and the insertion holes 3 for inserting the guide shafts 18 and 22 from the rear into the illustrated positions.
4A and 38A are formed (see the cross-sectional view taken along line 4-4 in FIG. 4). Therefore, each guide shaft 18, 22 is inserted into each insertion hole 34.
A, a reduced diameter portion 18A at the front end inserted from behind 38A,
When 22A is fitted into holes 32A and 36A, it is supported by holes 32A and 36A and insertion holes 34A and 38A, respectively, and is positioned parallel to the optical axis. Thereby, the holes 32A and 36A and the insertion hole 34 are formed at the stage of forming the lens barrel 10.
The axial directions of the guide shafts 18 and 22 are appropriately determined according to the positions of A and 38A.
It is not necessary to perform the alignment of the 22 axes.
【００１１】尚、ガイド軸１８、２２の縮径部１８Ａ、
２２Ａが孔３２Ａ、３６Ａから外れないようにするため
に縮径部１８Ａ、２２Ａの周面に形成された溝（図示せ
ず）に、Ｅワッシャ４０、４２が取り付けられる。以上
の如く構成されたレンズ鏡筒の組み立て手順について説
明すると、先ず、鏡筒１０の上部開口１０Ａからレンズ
１２が装着されたレンズ保持枠１４を鏡筒１０内に挿入
する。続いて、ガイド軸１８を後側支持部３４の挿通孔
３４Ａの後方から挿入し、レンズ保持枠１４の係合部１
６の挿通孔１６Ａに貫通させて、先端の縮径部１８Ａを
前側支持部３２の孔３２Ａに嵌合させる。そして、その
縮径部１８Ａの所定の溝にＥワッシャ４０を取り付け
る。また、同様にガイド軸２２を後側支持部３８の挿通
孔３８Ａの後方から挿入し、レンズ保持枠１４の係合部
２０の溝２０Ａに嵌合させて、先端の縮径部２２Ａを前
側支持部３６の孔３６Ａに嵌合させる。そして、その縮
径部２２Ａの所定の溝にＥワッシャ４２を取り付ける。The guide shafts 18, 22 have reduced diameter portions 18A,
E washers 40, 42 are attached to grooves (not shown) formed on the peripheral surfaces of the reduced diameter portions 18A, 22A to prevent the 22A from coming off the holes 32A, 36A. The procedure of assembling the lens barrel configured as described above will be described. First, the lens holding frame 14 on which the lens 12 is mounted is inserted into the lens barrel 10 from the upper opening 10A of the lens barrel 10. Subsequently, the guide shaft 18 is inserted from behind the insertion hole 34A of the rear support portion 34, and the engagement portion 1 of the lens holding frame 14 is inserted.
6 through the insertion hole 16A, and the reduced diameter portion 18A at the tip is fitted into the hole 32A of the front support portion 32. Then, the E washer 40 is attached to a predetermined groove of the reduced diameter portion 18A. Similarly, the guide shaft 22 is inserted from behind the insertion hole 38A of the rear support portion 38 and fitted into the groove 20A of the engagement portion 20 of the lens holding frame 14, so that the reduced diameter portion 22A at the front end is supported on the front side. The hole 36A of the part 36 is fitted. Then, the E washer 42 is attached to a predetermined groove of the reduced diameter portion 22A.
【００１２】このようにガイド軸１８、２２を鏡筒１０
内に配置する際に、従来行われていたガイド軸１８、２
２の軸合わせを行う必要がないため、容易且つ精度良く
鏡筒１０を組み立てることができる。尚、上記実施の形
態では、レンズ鏡筒１０の組み立ての際に、ガイド軸１
８、２２を後方から挿入するようにしたが、前側支持部
３２、３６と後側支持部３４、３８の構造を変えること
により、ガイド軸１８、２２を前方から挿入することは
当然可能である。As described above, the guide shafts 18 and 22 are connected to the lens barrel 10.
The guide shafts 18, 2,
Since there is no need to perform the alignment of 2, the lens barrel 10 can be easily and accurately assembled. In the above embodiment, when assembling the lens barrel 10, the guide shaft 1
The guide shafts 8 and 22 are inserted from the rear, but the guide shafts 18 and 22 can be inserted from the front by changing the structure of the front support portions 32 and 36 and the rear support portions 34 and 38. .
【００１３】また、上記実施の形態では、ガイド軸１
８、２２を鏡筒１０内に固定するのにＥワッシャ４０、
４２を使用したが、これに限らず、ネジ等の他の固定手
段で固定してもよい。In the above embodiment, the guide shaft 1
E-washers 40 are used to fix 8, 22 inside the lens barrel 10.
Although 42 is used, the present invention is not limited to this, and other fixing means such as screws may be used.
【００１４】[0014]
【発明の効果】以上説明したように本発明に係るレンズ
の支持構造によれば、ガイド軸の両端を支持する支持孔
をレンズ鏡筒に一体形成するようにしたため、レンズ鏡
筒の組み立ての際にガイド軸を軸合わせを行わなくても
ガイド軸を光軸に一致させることができ、組み立てが容
易になると共に、製品毎の光学性能のばらつきを防止す
ることができる。As described above, according to the lens support structure of the present invention, the support holes for supporting both ends of the guide shaft are formed integrally with the lens barrel, so that the lens barrel can be assembled easily. The guide shaft can be made to coincide with the optical axis even if the guide shaft is not aligned, thereby facilitating assembly and preventing variations in optical performance among products.
【図１】図１は、本発明が適用されたレンズ鏡筒の一部
を示した側面断面図である。FIG. 1 is a side sectional view showing a part of a lens barrel to which the present invention is applied.
【図２】図２は、レンズ保持枠の外観を示した正面図で
ある。FIG. 2 is a front view illustrating an appearance of a lens holding frame.
【図３】図３は、レンズ鏡筒の前側支持部の形状を示し
た図１における３−３断面図である。FIG. 3 is a sectional view taken along line 3-3 in FIG. 1, showing the shape of a front support portion of the lens barrel.
【図４】図４は、レンズ鏡筒の形状を示した図１におけ
る４−４断面図である。FIG. 4 is a sectional view taken along line 4-4 in FIG. 1 showing the shape of the lens barrel.
１０…レンズ鏡筒、１２…レンズ、１４…レンズ保持
枠、１６、２０…係合部、１８、２２…ガイド軸、２６
…送りネジ、３０…モータ、３２、３６…前側支持部、
３４、３８…後側支持部DESCRIPTION OF SYMBOLS 10 ... lens barrel, 12 ... lens, 14 ... lens holding frame, 16, 20 ... engaging part, 18, 22 ... guide shaft, 26
... feed screw, 30 ... motor, 32, 36 ... front side support part,
34, 38 ... rear support part
Claims (1)
ズ保持枠をガイド軸により光軸方向に案内するレンズの
支持構造において、 前記レンズ鏡筒の側面に前記レンズ保持枠をレンズ鏡筒
内に挿入する開口を設けると共に、前記ガイド軸が光軸
と平行となるように前記ガイド軸の前端及び後端を支持
する支持孔を前記レンズ鏡筒に予め一体形成し、前記開
口からレンズ保持枠をレンズ鏡筒内に挿入し、その後ガ
イド軸をいずれか一方の支持孔から挿入してレンズ保持
枠を支持させ、他方の支持孔に支持されたガイド軸の端
部を止め具で固定することを特徴とするレンズの支持構
造。1. A lens supporting structure for guiding a lens holding frame of a lens disposed in a lens barrel in a direction of an optical axis by a guide shaft, wherein the lens holding frame is provided on a side surface of the lens barrel in the lens barrel. And a support hole for supporting a front end and a rear end of the guide shaft is formed integrally with the lens barrel in advance so that the guide shaft is parallel to the optical axis. Into the lens barrel, then insert the guide shaft from one of the support holes to support the lens holding frame, and fix the end of the guide shaft supported by the other support hole with a stopper. A lens support structure characterized by the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11085569A JP2000275494A (en) | 1999-03-29 | 1999-03-29 | Lens support structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11085569A JP2000275494A (en) | 1999-03-29 | 1999-03-29 | Lens support structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000275494A true JP2000275494A (en) | 2000-10-06 |
Family
ID=13862453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11085569A Pending JP2000275494A (en) | 1999-03-29 | 1999-03-29 | Lens support structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000275494A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6501604B2 (en) | 2001-03-23 | 2002-12-31 | Fuji Photo Optical Co., Ltd. | Lens driving apparatus |
| US6650488B2 (en) | 2001-03-29 | 2003-11-18 | Fuji Photo Optical Co., Ltd. | Lens driving apparatus and lens barrel |
| WO2004088384A1 (en) * | 2003-03-28 | 2004-10-14 | Sony Corporation | Lens holding device, lens-barrel, and imaging device |
| JP2005049783A (en) * | 2003-07-31 | 2005-02-24 | Sony Corp | Imaging device and lens device |
| US7016121B2 (en) | 2003-11-17 | 2006-03-21 | Fujinon Corporation | Decentering adjustment method for a lens, and a lens device thereof |
| JP2010044217A (en) * | 2008-08-12 | 2010-02-25 | Nikon Corp | Lens barrel, imaging device, and manufacturing method |
| KR101004908B1 (en) * | 2008-09-22 | 2010-12-28 | 삼성전기주식회사 | Lens module |
| US11237353B2 (en) | 2017-10-10 | 2022-02-01 | New Shicoh Motor Co., Ltd. | Lens driving device, camera device, and electronic apparatus |
-
1999
- 1999-03-29 JP JP11085569A patent/JP2000275494A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6501604B2 (en) | 2001-03-23 | 2002-12-31 | Fuji Photo Optical Co., Ltd. | Lens driving apparatus |
| US6650488B2 (en) | 2001-03-29 | 2003-11-18 | Fuji Photo Optical Co., Ltd. | Lens driving apparatus and lens barrel |
| WO2004088384A1 (en) * | 2003-03-28 | 2004-10-14 | Sony Corporation | Lens holding device, lens-barrel, and imaging device |
| JP2004294947A (en) * | 2003-03-28 | 2004-10-21 | Sony Corp | Lens holding device, lens barrel and imaging apparatus |
| US7388718B2 (en) | 2003-03-28 | 2008-06-17 | Sony Corporation | Lens holding device, lens-barrel, and imaging device |
| KR100984709B1 (en) * | 2003-03-28 | 2010-10-01 | 소니 주식회사 | Lens holding device, lens-barrel, and imaging device |
| JP2005049783A (en) * | 2003-07-31 | 2005-02-24 | Sony Corp | Imaging device and lens device |
| US7016121B2 (en) | 2003-11-17 | 2006-03-21 | Fujinon Corporation | Decentering adjustment method for a lens, and a lens device thereof |
| JP2010044217A (en) * | 2008-08-12 | 2010-02-25 | Nikon Corp | Lens barrel, imaging device, and manufacturing method |
| KR101004908B1 (en) * | 2008-09-22 | 2010-12-28 | 삼성전기주식회사 | Lens module |
| US11237353B2 (en) | 2017-10-10 | 2022-02-01 | New Shicoh Motor Co., Ltd. | Lens driving device, camera device, and electronic apparatus |
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