JP2000121910A - Lens device and optical device using it - Google Patents
Lens device and optical device using itInfo
- Publication number
- JP2000121910A JP2000121910A JP10303274A JP30327498A JP2000121910A JP 2000121910 A JP2000121910 A JP 2000121910A JP 10303274 A JP10303274 A JP 10303274A JP 30327498 A JP30327498 A JP 30327498A JP 2000121910 A JP2000121910 A JP 2000121910A
- Authority
- JP
- Japan
- Prior art keywords
- lens
- gears
- lens barrel
- coil spring
- gear
- 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)
- Studio Devices (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、光軸に挿脱自在に
設けた少なくとも１つの鏡筒の回転軸を複数の回転伝達
要素を介して駆動するレンズ装置及び該装置を用いた光
学装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens apparatus for driving a rotation axis of at least one lens barrel provided to be detachable from an optical axis via a plurality of rotation transmitting elements, and an optical apparatus using the apparatus. Things.
【０００２】[0002]
【従来の技術】一般に、光学装置の１つであるテレビカ
メラは、カメラ本体とレンズ装置から構成され、レンズ
装置は各種の鏡筒を収容した装置本体と、鏡筒を駆動す
る駆動ユニットとから構成されている。各種の鏡筒とし
て、倍率を切換えるための鏡筒、アスペクト比を切換え
るための鏡筒、フィルタ等の光学アクセサリを切換える
ための鏡筒等があり、レンズ装置では鏡筒を光軸に挿脱
自在に備えると共に、鏡筒を引張コイルばね等の弾性部
材により付勢して光軸への挿入状態又は光軸からの脱出
状態に保持している。そして、鏡筒を挿脱位置に駆動す
る際には、鏡筒の回転軸を直接駆動するか、或いはその
回転軸にギア列を介して連結した他の回転軸を駆動する
ようになっている。2. Description of the Related Art In general, a television camera, which is one of the optical devices, is composed of a camera body and a lens device. The lens device is composed of a device body containing various lens barrels and a drive unit for driving the lens barrels. It is configured. There are various types of lens barrels, such as a lens barrel for switching magnification, a lens barrel for switching aspect ratio, and a lens barrel for switching optical accessories such as filters. In lens devices, the lens barrel can be inserted into and removed from the optical axis. In addition, the lens barrel is urged by an elastic member such as a tension coil spring to hold the lens barrel in a state of being inserted into the optical axis or a state of being removed from the optical axis. When the lens barrel is driven to the insertion / removal position, the rotation axis of the lens barrel is directly driven, or another rotation axis connected to the rotation axis via a gear train is driven. .
【０００３】例えば、図５の部分切欠背面図、図６の部
分切欠展開図に示すように、駆動ユニット１を備えた装
置本体２の内部には、倍率切換鏡筒３とアスペクト比切
換鏡筒４が間隔を空けて光軸に挿脱自在に配置されてい
る。鏡筒３、４には連結部材５、６を介してギア７、８
がそれぞれ固定されており、これらのギア７、８はギア
９〜１１を介して連結され、全てのギア７〜１１の回転
軸７ａ〜１１ａは装置本体２に支持されている。For example, as shown in a partially cutaway rear view of FIG. 5 and a partially cutout developed view of FIG. 6, a magnification switching lens barrel 3 and an aspect ratio switching lens barrel are provided inside an apparatus main body 2 having a drive unit 1. 4 are arranged so as to be freely inserted into and removed from the optical axis at intervals. Gears 7 and 8 are connected to lens barrels 3 and 4 via connecting members 5 and 6.
The gears 7 and 8 are connected via gears 9 to 11, and the rotation shafts 7 a to 11 a of all the gears 7 to 11 are supported by the apparatus main body 2.
【０００４】ギア９の回転軸９ａには倍率切換レバー１
２が設けられ、ギア１１の回転軸１１ａにはアスペクト
比切換レバー１３が設けられている。ギア１１はクラッ
チギアとされており、アスペクト比切換レバー１３を回
転軸１１ａの軸線方向に移動することにより、ギア１
０、１１同士の噛合又は噛合解除が可能とされている。
そして、連結部材５、６は第１、第２の引張コイルばね
１４、１５を介して装置本体２にそれぞれ連結され、鏡
筒３、４は第１、第２の引張コイルばね１４、１５によ
り回転方向にそれぞれ付勢され、光軸への挿入状態又は
光軸からの脱出状態が保持されている。[0004] A magnification switching lever 1 is provided on a rotating shaft 9a of the gear 9.
2, an aspect ratio switching lever 13 is provided on a rotation shaft 11a of the gear 11. The gear 11 is a clutch gear, and the gear 1 is moved by moving the aspect ratio switching lever 13 in the axial direction of the rotating shaft 11a.
0 and 11 can be engaged or released from each other.
The connecting members 5 and 6 are connected to the apparatus main body 2 via first and second tension coil springs 14 and 15, respectively, and the lens barrels 3 and 4 are connected by the first and second tension coil springs 14 and 15, respectively. Each of them is urged in the rotation direction, and the state of insertion into the optical axis or the state of escape from the optical axis is maintained.
【０００５】[0005]
【発明が解決しようとする課題】ところが上述の実施例
では、ギア７〜１１の間にバックラッシュが存在するた
め、ギア９、１１の回転軸９ａ、１１ａと共にレバー１
２、１３ががたつき、操作者に良好な操作感覚を与える
ことができないという問題点がある。また、このような
問題点を解決するために、組立上の工夫によりギア７〜
１１の間のバックラッシュを最小に調整しても、ギア７
〜１１の噛合面の摩擦が増大して同様な問題点が存在す
る。However, in the above-described embodiment, since there is a backlash between the gears 7 to 11, the lever 1 and the rotation shafts 9a and 11a of the gears 9 and 11 are used.
There is a problem in that the rattles 2 and 13 make it impossible to give the operator a good operation feeling. Further, in order to solve such a problem, the gears 7 to 7 are improved by a device in assembling.
Even if the backlash between the gears 11 is adjusted to the minimum, the gear 7
There is a similar problem due to an increase in friction between the meshing surfaces Nos. 1 to 11.
【０００６】更に、ギア１０、１１同士の間にもバック
ラッシュが存在するため、クラッチ動作の際にギア１
０、１１同士が円滑に噛合又は噛合解除しないという問
題点がある。そして、このような問題点を解決するため
に、加工上の工夫によりギア１０、１１に面取りや大き
いモジュールを施して、それらを噛合し易い形状として
も、ギア１１の位置が不安定になって同様な問題点が存
在する。Further, since there is a backlash between the gears 10 and 11, the gear 1
There is a problem that 0 and 11 do not smoothly mesh with each other or disengage. In order to solve such a problem, the positions of the gears 11 become unstable even if chamfers or large modules are applied to the gears 10 and 11 by means of processing to make them easy to mesh. A similar problem exists.
【０００７】本発明の目的は、上述の問題点を解消し、
良好な操作感覚を与え得ると共に、安定したクラッチ切
換動作を行い得るレンズ装置及び該装置を用いた光学装
置を提供することにある。An object of the present invention is to solve the above-mentioned problems,
An object of the present invention is to provide a lens device which can provide a good operation feeling and can perform a stable clutch switching operation, and an optical device using the lens device.
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するため
の本発明に係るレンズ装置は、装置本体の内部に少なく
とも１つの鏡筒を光軸に挿脱自在に設け、前記鏡筒の回
転軸を複数の回転伝達要素を介して駆動するレンズ装置
において、前記回転伝達要素を付勢する弾性部材を設け
たことを特徴とする。According to a first aspect of the present invention, there is provided a lens apparatus having at least one lens barrel provided in a device body so as to be freely inserted into and removed from an optical axis. Is driven via a plurality of rotation transmitting elements, wherein an elastic member for biasing the rotation transmitting elements is provided.
【０００９】また、本発明に係るレンズ装置を用いた光
学装置は、装置本体の内部に少なくとも１つの鏡筒を光
軸に挿脱自在に設け、前記鏡筒の回転軸を複数の回転伝
達要素を介して駆動するレンズ装置を用いた光学装置に
おいて、前記回転伝達要素を付勢する弾性部材を設けた
ことを特徴とする。In an optical apparatus using the lens apparatus according to the present invention, at least one lens barrel is provided in the apparatus main body so as to be detachable from an optical axis, and a rotation axis of the lens barrel is connected to a plurality of rotation transmitting elements. In an optical device using a lens device driven through a member, an elastic member for urging the rotation transmitting element is provided.
【００１０】[0010]
【発明の実施の形態】本発明を図１〜図４に図示の実施
例に基づいて詳細に説明する。図１はレンズ装置の第１
の実施例の部分切欠背面図、図２は部分切欠展開図であ
り、このレンズ装置は光学装置としての例えばテレビカ
メラの本体に装着可能とされている。駆動ユニット２１
を備えた装置本体２２の内部には、倍率切換鏡筒２３と
アスペクト比切換鏡筒２４とが間隔を空けて光軸に挿脱
自在に配置されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the embodiments shown in FIGS. FIG. 1 shows a first example of the lens device.
FIG. 2 is a partially cutaway development view of the embodiment of FIG. 1, and this lens device can be attached to a main body of a television camera as an optical device. Drive unit 21
In the apparatus main body 22 provided with a zoom lens, a magnification switching lens barrel 23 and an aspect ratio switching lens barrel 24 are arranged so as to be freely inserted into and removed from the optical axis with an interval.
【００１１】鏡筒２３、２４には、連結部材２５、２６
を介してギア２７、２８がそれぞれ一体に固定され、こ
れらのギア２７、２８はギア２９〜３１により連結さ
れ、全てのギア２７〜３１の回転軸２７ａ〜３１ａは装
置本体２２に支持されている。回転軸２９ａには、倍率
切換鏡筒２３を駆動するための倍率切換レバー３２が一
体に設けられ、回転軸３１ａにはアスペクト比切換鏡筒
２４を駆動するためのアスペクト比切換レバー３３が一
体に設けられている。ギア３１はクラッチギアとされ、
アスペクト比切換レバー３３を回転軸３１ａの軸線方向
に移動することによりギア３０との噛合又は噛合解除が
可能とされている。The lens barrels 23 and 24 have connecting members 25 and 26, respectively.
, The gears 27 and 28 are respectively fixed integrally, and these gears 27 and 28 are connected by gears 29 to 31, and the rotation shafts 27 a to 31 a of all the gears 27 to 31 are supported by the apparatus main body 22. . A magnification switching lever 32 for driving the magnification switching lens barrel 23 is integrally provided on the rotating shaft 29a, and an aspect ratio switching lever 33 for driving the aspect ratio switching lens barrel 24 is integrally provided on the rotating shaft 31a. Is provided. The gear 31 is a clutch gear,
By moving the aspect ratio switching lever 33 in the axial direction of the rotating shaft 31a, meshing or releasing with the gear 30 can be performed.
【００１２】ここで、回転軸２９ａ、３０ａには偏心軸
２９ｂ、３０ｂがそれぞれ形成されており、偏心軸２９
ｂには第１の引張コイルばね３４の一端が連結され、偏
心軸３０ｂには第１の引張コイルばね３４の他端が連結
されている。この第１の引張コイルばね３４はギア２
９、３０同士を引き付けるように設けられ、ギア２９、
３０は第１の引張コイルばね３４の付勢力により回転方
向に付勢されて定位されている。また、連結部材２６に
は第２の引張コイルばね３５の一端が連結され、この第
２の引張コイルばね３５の他端は装置本体２２に連結さ
れている。アスペクト比切換鏡筒２４は、第２の引張コ
イルばね３５の付勢力により光軸への挿入状態又は光軸
からの脱出状態に保持されている。Here, eccentric shafts 29b and 30b are formed on the rotating shafts 29a and 30a, respectively.
b is connected to one end of a first tension coil spring 34, and the eccentric shaft 30b is connected to the other end of the first tension coil spring 34. The first tension coil spring 34 is
The gears 29, 30 are provided to attract each other.
Numeral 30 is biased in the rotational direction by the biasing force of the first tension coil spring 34 and localized. One end of a second tension coil spring 35 is connected to the connection member 26, and the other end of the second tension coil spring 35 is connected to the apparatus main body 22. The aspect ratio switching lens barrel 24 is held in a state of insertion into the optical axis or a state of escape from the optical axis by the urging force of the second tension coil spring 35.
【００１３】操作者が倍率切換レバー３２を所定方向に
回転すると、ギア２９の回転が直接ギア２７に伝達し、
倍率切換鏡筒２３が光軸に挿脱する。同時に、ギア２９
の回転がギア３０、３１を介してギア２８に伝達し、ア
スペクト比切換鏡筒２４が光軸に挿脱する。また、アス
ペクト比切換レバー３３を引きながら所定方向に回転す
ると、ギア３１がギア３０から外れてその回転がギア２
８のみに伝達し、アスペクト比切換鏡筒２４が光軸に挿
脱する。When the operator rotates the magnification switching lever 32 in a predetermined direction, the rotation of the gear 29 is directly transmitted to the gear 27,
The magnification switching lens barrel 23 is inserted into and removed from the optical axis. At the same time, gear 29
Is transmitted to the gear 28 via the gears 30 and 31, and the aspect ratio switching lens barrel 24 is inserted into and removed from the optical axis. When the gear 31 is rotated in a predetermined direction while pulling the aspect ratio switching lever 33, the gear 31 is disengaged from the gear 30 and the rotation is shifted to the gear 2
8, and the aspect ratio switching lens barrel 24 is inserted into and removed from the optical axis.
【００１４】このとき、第１の引張コイルばね３４の付
勢力がギア２９、３０を回転方向に付勢して定位するの
で、ギア２７、２９、３０の間のバックラッシュを除去
できる。従って、ギア２９に一体の倍率切換レバー３２
のがたつきを防止でき、操作者に良好な操作感覚を与え
ることができる。At this time, since the biasing force of the first tension coil spring 34 biases the gears 29 and 30 in the rotational direction to localize, the backlash between the gears 27, 29 and 30 can be eliminated. Therefore, the magnification switching lever 32 integrated with the gear 29
It is possible to prevent rattling and to give the operator a good operation feeling.
【００１５】また、第２の引張コイルばね３５の付勢力
は、装置本体２２に対する倍率切換鏡筒２３の位置を光
軸への挿入状態又は光軸からの脱出状態において一定に
保持するため、ギア３０の静止位置を一定に保持でき
る。従って、ギア３１をギア３０に円滑に噛合又は噛合
解除させることが可能となり、操作者に良好な操作感覚
を与えることができる。The biasing force of the second tension coil spring 35 is used to maintain the position of the magnification switching lens barrel 23 with respect to the apparatus main body 22 constant in the state of insertion into the optical axis or the state of escape from the optical axis. The 30 stationary positions can be kept constant. Therefore, the gear 31 can be smoothly meshed with or released from the gear 30, and a good operation feeling can be given to the operator.
【００１６】図３はレンズ装置の第２の実施例の部分切
欠背面図であり、第１の引張コイルばね３４の一端がギ
ア３０の偏心軸３０ｂに連結されている反面で、第１の
引張コイルばね３４の他端は装置本体２２に連結されて
いる。この第２の実施例では、第１の引張コイルばね３
４の付勢力がギア３０を回転方向に付勢して定位するの
で、第１の実施例と同様な効果を達成できる。FIG. 3 is a partially cutaway rear view of the second embodiment of the lens apparatus. One end of a first tension coil spring 34 is connected to the eccentric shaft 30b of the gear 30, and the first tension coil spring 34 has a first tension spring. The other end of the coil spring 34 is connected to the apparatus main body 22. In the second embodiment, the first tension coil spring 3
Since the urging force of No. 4 urges the gear 30 in the rotation direction to be localized, the same effect as in the first embodiment can be achieved.
【００１７】図４はレンズ装置の第３の実施例の部分切
欠背面図であり、第１の引張コイルばね３４は、従来例
と同様に倍率切換鏡筒２４と装置本体２２を連結するよ
うに配置されている。一方、第３の引張りコイルばね３
６が、ギア３０の偏心軸３０ｂと装置本体２２を連結す
るように配置されている。そして、第３の引張りコイル
ばね３６の付勢力は微少とされ、全てのギア２７〜３１
の動作に影響を及ぼさない程度とされている。この第３
の実施例では、第３の引張りコイルばね３６の微少な付
勢力がギア３０を回転方向に付勢して定位するので、第
１の実施例と同様な効果を達成できる。FIG. 4 is a partially cutaway rear view of a third embodiment of the lens apparatus. A first tension coil spring 34 is provided so as to connect the magnification switching lens barrel 24 and the apparatus main body 22 as in the conventional example. Are located. On the other hand, the third tension coil spring 3
6 is arranged so as to connect the eccentric shaft 30 b of the gear 30 and the apparatus main body 22. Then, the urging force of the third tension coil spring 36 is made very small, and all the gears 27 to 31
Is not affected. This third
In the third embodiment, since the slight urging force of the third tension coil spring 36 urges the gear 30 in the rotation direction to localize, the same effect as that of the first embodiment can be achieved.
【００１８】なお、上述の第１〜第３の実施例ではレン
ズ装置について説明したが、これらのレンズ装置を光学
装置を用いることにより同様な効果を達成できる。Although the first to third embodiments have described the lens devices, similar effects can be achieved by using optical devices for these lens devices.
【００１９】[0019]
【発明の効果】以上説明したように本発明に係るレンズ
装置及び該装置を用いた光学装置では、弾性部材が回転
伝達要素を付勢して定位するので、回転伝達要素自体の
がたつきや、回転伝達要素に一体の操作部材のがたつき
を防止でき、良好な操作感覚を与えることができる。ま
た、回転伝達要素の一部をクラッチギアとた場合には、
ギア同士を円滑に噛合又は噛合解除することができ、安
定したクラッチ切換動作を行わせることができる。As described above, in the lens device according to the present invention and the optical device using the device, since the elastic member biases the rotation transmitting element to localize the rotation, the rotation transmitting element itself may be rattled. In addition, it is possible to prevent rattling of the operation member integrated with the rotation transmitting element, and to provide a good operation feeling. When a part of the rotation transmitting element is a clutch gear,
The gears can be smoothly meshed or disengaged, and a stable clutch switching operation can be performed.
【図１】レンズ装置の第１の実施例の部分切欠背面図で
ある。FIG. 1 is a partially cutaway rear view of a first embodiment of a lens device.
【図２】部分切欠展開図である。FIG. 2 is a partially cutaway development view.
【図３】レンズ装置の第２の実施例の部分切欠背面図で
ある。FIG. 3 is a partially cutaway rear view of a second embodiment of the lens device;
【図４】レンズ装置の第３の実施例の部分切欠背面図で
ある。FIG. 4 is a partially cutaway rear view of a third embodiment of the lens device.
【図５】従来例のレンズ装置の部分切欠背面図である。FIG. 5 is a partially cutaway rear view of a conventional lens device.
【図６】従来例の部分切欠展開図である。FIG. 6 is a partially cutaway development view of a conventional example.
２２ 装置本体 ２３ 倍率切換鏡筒 ２４ アスペクト比切換鏡筒 ２７〜３１ ギア ２７ａ〜３１ａ 回転軸 ２９ｂ、３０ｂ 偏心軸 ３４〜３６ 引張コイルばね Reference Signs List 22 apparatus main body 23 magnification switching lens barrel 24 aspect ratio switching lens barrel 27-31 gear 27a-31a rotating shaft 29b, 30b eccentric shaft 34-36 tension coil spring
Claims (6)
を光軸に挿脱自在に設け、前記鏡筒の回転軸を複数の回
転伝達要素を介して駆動するレンズ装置において、前記
回転伝達要素を付勢する弾性部材を設けたことを特徴と
するレンズ装置。1. A lens device in which at least one lens barrel is provided inside a device main body so as to be detachable from an optical axis and a rotation axis of the lens barrel is driven via a plurality of rotation transmission elements. A lens device provided with an elastic member for urging the lens.
引き付けるように設けた請求項１に記載のレンズ装置。2. The lens device according to claim 1, wherein the elastic member is provided so as to attract the rotation transmitting elements.
軸同士を引き付けるように設けた請求項２に記載のレン
ズ装置。3. The lens device according to claim 2, wherein the elastic member is provided to attract eccentric axes of the rotation transmitting element.
装置本体を引き付けるように設けた請求項１に記載のレ
ンズ装置。4. The lens device according to claim 1, wherein the elastic member is provided so as to attract the rotation transmitting element and the device main body.
とした請求項１に記載のレンズ装置。5. The lens device according to claim 1, wherein a part of the rotation transmitting element is a clutch gear.
を光軸に挿脱自在に設け、前記鏡筒の回転軸を複数の回
転伝達要素を介して駆動するレンズ装置を用いた光学装
置において、前記回転伝達要素を付勢する弾性部材を設
けたことを特徴とするレンズ装置を用いた光学装置。6. An optical apparatus using a lens device, wherein at least one lens barrel is provided in the apparatus main body so as to be detachable from an optical axis, and a rotation axis of the lens barrel is driven via a plurality of rotation transmitting elements. An optical device using a lens device, wherein an elastic member for biasing the rotation transmitting element is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10303274A JP2000121910A (en) | 1998-10-09 | 1998-10-09 | Lens device and optical device using it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10303274A JP2000121910A (en) | 1998-10-09 | 1998-10-09 | Lens device and optical device using it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000121910A true JP2000121910A (en) | 2000-04-28 |
Family
ID=17918997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10303274A Pending JP2000121910A (en) | 1998-10-09 | 1998-10-09 | Lens device and optical device using it |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000121910A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100412596C (en) * | 2004-02-24 | 2008-08-20 | 精工电子有限公司 | Optical module and camera module |
| JP2011120635A (en) * | 2009-12-08 | 2011-06-23 | Kyoraku Sangyo Kk | Pachinko game machine |
| JP2011524998A (en) * | 2008-06-18 | 2011-09-08 | ジュン，イン | Optical sighting mirror for both dot sight mode and scope mode |
-
1998
- 1998-10-09 JP JP10303274A patent/JP2000121910A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100412596C (en) * | 2004-02-24 | 2008-08-20 | 精工电子有限公司 | Optical module and camera module |
| JP2011524998A (en) * | 2008-06-18 | 2011-09-08 | ジュン，イン | Optical sighting mirror for both dot sight mode and scope mode |
| JP2011120635A (en) * | 2009-12-08 | 2011-06-23 | Kyoraku Sangyo Kk | Pachinko game machine |
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