JPH0843705A - Photographic lens barrel device - Google Patents
Photographic lens barrel deviceInfo
- Publication number
- JPH0843705A JPH0843705A JP6176910A JP17691094A JPH0843705A JP H0843705 A JPH0843705 A JP H0843705A JP 6176910 A JP6176910 A JP 6176910A JP 17691094 A JP17691094 A JP 17691094A JP H0843705 A JPH0843705 A JP H0843705A
- Authority
- JP
- Japan
- Prior art keywords
- lens barrel
- mount
- photographic lens
- taking lens
- pin
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は撮影レンズ鏡胴装置に係
り、特に監視用カメラ等のテレビカメラに用いられる撮
影レンズのフォーカス調整機能を備えた撮影レンズ鏡胴
装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a taking lens barrel device, and more particularly to a taking lens barrel device having a focus adjusting function of a taking lens used in a television camera such as a surveillance camera.
【０００２】[0002]
【従来の技術】従来、この種の撮影レンズは、テレビカ
メラ本体にマウントを介して取り付けられ、組み立て時
に撮影レンズ鏡胴をマウントに対して前後方向に移動さ
せることにより、カメラ側の結像面に焦点合わせを行う
ようにしている。また、前記撮影レンズ鏡胴には、カメ
ラ側の結像面に焦点合わせができる位置に専用の位置決
め用ピンが予め固着されており、この専用の位置決め用
ピンで撮影レンズ鏡胴をマウントに対して位置決めする
ようになっている。2. Description of the Related Art Conventionally, a photographing lens of this kind has been mounted on a television camera body through a mount, and by moving the photographing lens barrel in the front-rear direction with respect to the mount at the time of assembly, an image plane on the camera side I try to focus on. Further, a dedicated positioning pin is previously fixed to the photographing lens barrel at a position where focusing can be performed on the image plane on the camera side, and the photographing lens barrel is mounted on the mount with the dedicated positioning pin. It is designed to be positioned.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、従来の
撮影レンズ鏡胴装置では、撮影レンズ毎に専用の位置決
めピンを撮影レンズ鏡胴に固着しているので、撮影レン
ズの種類に応じた数だけ撮影レンズ鏡胴を揃えなければ
ならないという欠点がある。本発明はこのような事情に
鑑みてなされたもので、撮影レンズ鏡胴を共通化できる
撮影レンズ鏡胴装置を提供することを目的とする。However, in the conventional taking lens barrel device, since a dedicated positioning pin is fixed to the taking lens barrel for each taking lens, the number of taking lenses according to the type of taking lens is taken. The drawback is that the lens barrels must be aligned. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a taking lens barrel device that can share a taking lens barrel.
【０００４】[0004]
【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、カメラ側に装着されるマウントと、該マ
ウントに前後方向に移動自在に支持された撮影レンズ鏡
胴とから成り、該撮影レンズ鏡胴を前記マウントに対し
て前後方向に移動させてカメラ側の結像面に焦点合わせ
を行う撮影レンズ鏡胴装置に於いて、前記マウント、又
は撮影レンズ鏡胴には、撮影レンズの種類に応じて撮影
レンズ鏡胴をカメラ側の結像面に焦点合わせするように
マウントに対して位置調整する位置決め用部材が、撮影
レンズの種類毎に設けられることを特徴としている。In order to achieve the above-mentioned object, the present invention comprises a mount mounted on the camera side and a taking lens barrel movably supported by the mount in the front-rear direction. In a photographing lens barrel device for moving the photographing lens barrel in the front-rear direction with respect to the mount to focus on an image plane on a camera side, the mount or the photographing lens barrel includes a photographing lens. A positioning member for adjusting the position of the taking lens barrel with respect to the mount so as to focus the taking lens barrel on the image plane on the camera side is provided for each taking lens type.
【０００５】[0005]
【作用】本発明によれば、撮影レンズの種類に応じて位
置決め用部材を選択し、この選択した位置決め部材をマ
ウント、又は撮影レンズ鏡胴に取り付ける。これによ
り、撮影レンズ鏡胴は、その撮影レンズに対応した位置
に前記位置決め用部材によってマウントに位置決めされ
るので、主たる撮影レンズ鏡胴を共通化できる。According to the present invention, the positioning member is selected according to the type of the taking lens, and the selected positioning member is mounted on the mount or the taking lens barrel. As a result, the photographing lens barrel is positioned on the mount at the position corresponding to the photographing lens by the positioning member, so that the main photographing lens barrel can be shared.
【０００６】[0006]
【実施例】以下添付図面に従って本発明に係る撮影レン
ズ鏡胴装置の好ましい実施例について詳説する。図１
は、本発明に係る撮影レンズ鏡胴装置が監視用カメラに
適用された実施例を示す半断面図である。同図に示すよ
うにカメラ本体１０側には、円筒状に形成されたマウン
ト１２がネジ込み固定され、このマウント１２には撮影
レンズ鏡胴１４がネジとネジとの作用によりマウント１
２に対して前後方向（図中左右方向）に移動自在に装着
される。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a taking lens barrel device according to the present invention will be described in detail below with reference to the accompanying drawings. FIG.
FIG. 6 is a half sectional view showing an embodiment in which the taking lens barrel device according to the present invention is applied to a surveillance camera. As shown in the figure, a cylindrical mount 12 is screwed and fixed to the camera body 10 side, and a taking lens barrel 14 is mounted on the mount 12 by the action of the screws.
It is mounted so as to be movable in the front-back direction (left-right direction in the figure) with respect to 2.
【０００７】前記撮影レンズ鏡胴１４は、その内部に撮
影レンズを構成する前レンズ群１６と後レンズ群１８と
が各々の光軸を一致させた状態で配置されている。前レ
ンズ群１６は、前レンズ枠２０に保持されて撮影レンズ
鏡胴１４の前部にネジ固定され、また、後レンズ群１８
は後レンズ枠２２に保持されて撮影レンズ鏡胴１４の後
部にネジ固定されている。The taking lens barrel 14 has a front lens group 16 and a rear lens group 18 which form a taking lens and are arranged inside the taking lens barrel 14 so that their optical axes coincide with each other. The front lens group 16 is held by the front lens frame 20 and screwed to the front part of the taking lens barrel 14, and the rear lens group 18 is also provided.
Is held by the rear lens frame 22 and fixed to the rear portion of the taking lens barrel 14 with screws.
【０００８】本実施例の撮影レンズ鏡胴１４は、前レン
ズ枠２０及び後レンズ枠２２をネジによって着脱可能と
しており、従って、前レンズ枠２０及び後レンズ枠２２
を、焦点距離の異なる撮影レンズを保持した別のレンズ
枠に交換することによって、主たる撮影レンズ鏡胴の共
通化が図られている。前記マウント１２の外周面には孔
部２４が穿設され、この孔部２４には位置決め用ピン２
６が取り出し可能に挿入される。前記位置決め用ピン２
６の先端小径部２８は、撮影レンズ鏡胴１４の外周面に
形成された帯状の溝３０内に突出されている。また、先
端小径部２８は、撮影レンズ鏡胴１４の後方移動で溝３
０の図中左縁部３０Ａに当接するまでの範囲で、ＣＣＤ
ユニット３２の結像面３４上に於いて焦点を合わせるこ
とができる大きさに形成されている。In the taking lens barrel 14 of this embodiment, the front lens frame 20 and the rear lens frame 22 are attachable and detachable by screws, and therefore, the front lens frame 20 and the rear lens frame 22 are attached.
Is replaced with another lens frame holding a photographing lens having a different focal length, whereby the main photographing lens barrel is made common. A hole 24 is formed in the outer peripheral surface of the mount 12, and the positioning pin 2 is provided in the hole 24.
6 is removably inserted. The positioning pin 2
The small-diameter portion 28 of the tip 6 projects into a band-shaped groove 30 formed on the outer peripheral surface of the taking lens barrel 14. Further, the tip small diameter portion 28 moves in the groove 3 by the backward movement of the taking lens barrel 14.
0 within the range of contacting the left edge portion 30A in the figure, the CCD
The size is formed so that the image can be focused on the image plane 34 of the unit 32.
【０００９】このように構成された本実施例の撮影レン
ズ鏡胴装置によれば、先ず、撮影レンズ鏡胴１４に前レ
ンズ枠２０と後レンズ枠２２とをネジ固定する。そし
て、前レンズ群１６と後レンズ群１８とによる焦点距離
に対応した位置決め用ピン２６を、マウント１２の孔部
２４から挿入する。図３は、図１に示した撮影レンズ鏡
胴１４に、前レンズ群４０を保持した前レンズ枠４２
と、後レンズ群４４を保持した後レンズ枠４６とをネジ
固定したものである。前記前レンズ群４０と後レンズ群
４２とから成る撮影レンズは、図１に示した撮影レンズ
よりも焦点距離が短めに設定されている。According to the taking lens barrel device of this embodiment having the above-described structure, first, the front lens frame 20 and the rear lens frame 22 are fixed to the taking lens barrel 14 with screws. Then, the positioning pin 26 corresponding to the focal length of the front lens group 16 and the rear lens group 18 is inserted from the hole 24 of the mount 12. FIG. 3 shows a front lens frame 42 holding a front lens group 40 on the taking lens barrel 14 shown in FIG.
And a rear lens frame 46 holding the rear lens group 44 are fixed by screws. The photographic lens including the front lens group 40 and the rear lens group 42 has a focal length set to be shorter than that of the photographic lens shown in FIG.
【００１０】従って、図１に示した撮影レンズ鏡胴１４
の後方移動量ｘ1 と比較して、図３に示した撮影レンズ
鏡胴１４の後方移動量ｘ2 を少なく規制しなければなら
ないため、図３の位置決め用ピン４８は図１の位置決め
用ピン２６の先端小径部２８よりも大きめ目に形成され
ている。また、この位置決め用ピン４８は、撮影レンズ
鏡胴１４の後方移動で溝３０の図中左縁部３０Ａに当接
するまでの範囲で、ＣＣＤユニット３２の結像面３４上
に於いて焦点を合わせることができる大きさに形成され
ている。Therefore, the taking lens barrel 14 shown in FIG.
Compared with the rearward movement amount x 1, since it is necessary to reduce restricting backward movement amount x 2 of the photographic lens barrel 14 shown in FIG. 3, the positioning pins 48 of Figure 3 is positioning pin of FIG. 1 It is formed to be larger than the tip small diameter portion 28 of 26. Further, the positioning pin 48 focuses on the image forming surface 34 of the CCD unit 32 within a range until it comes into contact with the left edge portion 30A of the groove 30 in the drawing due to the backward movement of the taking lens barrel 14. It is formed in a size that allows it.
【００１１】本実施例の撮影レンズ鏡胴装置に於いて
も、図１、図２に示した実施例と同様に、撮影レンズ鏡
胴１４をマウント１２に対して回転させて後方に移動さ
せ、ピン４８を溝３０の左縁部３０Ａに当接させるまで
の範囲でＣＣＤユニット３２の結像面３４上で焦点合わ
せを行うことができる。このように本実施例では図１〜
図３に示したように、撮影レンズを交換する毎に、位置
決めピンもその撮影レンズの異なる焦点距離に対応する
繰り出し量に合った位置決め用ピンに交換するようにし
たので、撮影レンズ鏡胴１２を共通化しても少ない部品
の変更で多種のレンズに対応することができる。Also in the taking lens barrel device of this embodiment, the taking lens barrel 14 is rotated with respect to the mount 12 and moved rearward, as in the embodiment shown in FIGS. 1 and 2. Focusing can be performed on the image plane 34 of the CCD unit 32 within the range in which the pin 48 is brought into contact with the left edge portion 30A of the groove 30. Thus, in this embodiment, as shown in FIG.
As shown in FIG. 3, each time the taking lens is replaced, the positioning pin is also replaced with a positioning pin that corresponds to the amount of extension corresponding to different focal lengths of the taking lens. Even if they are used in common, it is possible to support a wide variety of lenses by changing a few parts.
【００１２】図４は、本発明に係る撮影レンズ鏡胴装置
の他の実施例を示す半断面図であり、図１〜図３に示し
た実施例と同一若しくは類似の部材については同一の符
号を付して説明する。同図に示す撮影レンズ鏡胴装置
は、位置決め用ピン５０の規制用溝５２をマウント１２
側に形成したもので、このピン５０はマウント１２の外
周面に穿設された孔部５４から溝５２内に挿入されて撮
影レンズ鏡胴１４側の孔部５６に位置決めされる。ま
た、前記ピン５０は、撮影レンズ鏡胴１４の前方移動で
溝５２の図中左縁部５２Ａに当接するまでの範囲で、Ｃ
ＣＤユニット３２の結像面３４上に於いて焦点を合わせ
ることができる大きさに形成されている。FIG. 4 is a half cross-sectional view showing another embodiment of the taking lens barrel device according to the present invention, and the same or similar members as those of the embodiment shown in FIGS. Will be described. In the taking lens barrel device shown in the same drawing, the regulating groove 52 of the positioning pin 50 is mounted on the mount 12.
The pin 50 is formed on the side of the mount 12. The pin 50 is inserted into the groove 52 from the hole 54 formed on the outer peripheral surface of the mount 12 and positioned in the hole 56 on the side of the taking lens barrel 14. Further, the pin 50 is C within a range until it comes into contact with the left edge portion 52A of the groove 52 in the drawing by the forward movement of the taking lens barrel 14.
The size is formed so that the image can be focused on the image plane 34 of the CD unit 32.
【００１３】このように構成された本実施例の撮影レン
ズ鏡胴装置に於いても、図１〜図３に示した実施例と同
様に、撮影レンズ鏡胴１４をマウント１２に対して回転
させて前方に移動させ、ピン５０を図５に示すように溝
５２の左縁部５２Ａに当接するまでの範囲で、ＣＣＤユ
ニット３２の結像面３４上で焦点合わせを行うことがで
きる。Also in the taking lens barrel device of this embodiment having the above-described structure, the taking lens barrel 14 is rotated with respect to the mount 12 as in the embodiment shown in FIGS. Then, focusing can be performed on the image plane 34 of the CCD unit 32 within a range in which the pin 50 is moved forward and brought into contact with the left edge portion 52A of the groove 52 as shown in FIG.
【００１４】図６は、図４に示した位置決め用ピン５０
の代わりに偏心した位置決め用ピンを使用したものであ
る。このピンは図６〜図８に示すように、溝５２の左端
部５２Ａと当接する直方体形状の本体ピン６０と、この
本体ピン６０に対して偏心した位置に植設された小径ピ
ン６２とから形成される。小径ピン６２は、撮影レンズ
鏡胴１４の孔部５６に固定されている。FIG. 6 shows the positioning pin 50 shown in FIG.
The eccentric positioning pin is used instead of. As shown in FIGS. 6 to 8, this pin is composed of a rectangular parallelepiped main body pin 60 that abuts the left end portion 52A of the groove 52, and a small diameter pin 62 that is planted at a position eccentric to the main body pin 60. It is formed. The small diameter pin 62 is fixed to the hole portion 56 of the taking lens barrel 14.
【００１５】従って、本実施例では、本体ピン６０を回
転させて本体ピン６０の短面部６０Ａを溝５２の端面５
２Ａに向けると（図７参照）、撮影レンズ鏡胴１４の移
動量ｘ3 を短めに設定することができる。また、本体ピ
ン６０の長面部６０Ｂを溝５２の端面５２Ａに向けると
（図８参照）、撮影レンズ鏡胴１４の移動量ｘ4 を長め
に設定することができる。これにより、偏心した位置決
めピンを使用すれば、１つの位置決め用ピンで２種類の
フォーカス移動量の異なった撮影レンズに対応すること
ができる。Therefore, in this embodiment, the main body pin 60 is rotated so that the short surface portion 60A of the main body pin 60 is moved to the end surface 5 of the groove 52.
2A (see FIG. 7), the movement amount x 3 of the taking lens barrel 14 can be set to be short. Further, when the long surface portion 60B of the main body pin 60 is directed to the end surface 52A of the groove 52 (see FIG. 8), the movement amount x 4 of the taking lens barrel 14 can be set longer. As a result, by using the eccentric positioning pin, one positioning pin can be used for two types of photographing lenses having different focus movement amounts.
【００１６】[0016]
【発明の効果】以上説明したように本発明に係る撮影レ
ンズ鏡胴装置によれば、撮影レンズの種類に応じて位置
決め用部材を選択し、この選択した位置決め部材をマウ
ント、又は撮影レンズ鏡胴に取り付けるようにしたの
で、主たる撮影レンズ鏡胴を共通化できる。As described above, according to the photographing lens barrel device of the present invention, the positioning member is selected according to the type of the photographing lens, and the selected positioning member is mounted or the photographing lens barrel is mounted. Since it is attached to, the main lens barrel can be shared.
【図１】本発明に係る撮影レンズ鏡胴装置が監視用カメ
ラに適用された実施例を示す半断面図FIG. 1 is a half sectional view showing an embodiment in which a taking lens barrel device according to the present invention is applied to a surveillance camera.
【図２】図１に示した撮影レンズ鏡胴装置で焦点合わせ
を実施した状態を示す半断面図FIG. 2 is a half sectional view showing a state where focusing is performed by the taking lens barrel device shown in FIG.
【図３】撮影レンズと位置決め用ピンとを交換した実施
例を示す半断面図FIG. 3 is a half sectional view showing an embodiment in which a photographing lens and a positioning pin are exchanged.
【図４】マウント側に位置決め用ピンの規制用溝を形成
した実施例を示す半断面図FIG. 4 is a half sectional view showing an embodiment in which a positioning groove for a positioning pin is formed on the mount side.
【図５】図４に示した撮影レンズ鏡胴装置で焦点合わせ
を実施した状態を示す半断面図5 is a half cross-sectional view showing a state in which focusing is performed by the taking lens barrel device shown in FIG.
【図６】偏心した位置決め用ピンが適用された撮影レン
ズ鏡胴装置の実施例を示す半断面図FIG. 6 is a half sectional view showing an embodiment of a taking lens barrel device to which an eccentric positioning pin is applied.
【図７】偏心した位置決め用ピンによる撮影レンズ鏡胴
の移動量の説明図FIG. 7 is an explanatory diagram of the movement amount of the photographing lens barrel by the eccentric positioning pin.
【図８】偏心した位置決め用ピンによる撮影レンズ鏡胴
の移動量の説明図FIG. 8 is an explanatory diagram of the movement amount of the taking lens barrel by the eccentric positioning pin.
１０…カメラ本体 １２…マウント １４…撮影レンズ鏡胴 ２６、４８、５０、６０…位置決め用ピン ３０、５２…溝 ３２…ＣＣＤユニット 10 ... Camera body 12 ... Mount 14 ... Photographic lens barrel 26, 48, 50, 60 ... Positioning pin 30, 52 ... Groove 32 ... CCD unit
Claims (1)
ントに前後方向に移動自在に支持された撮影レンズ鏡胴
とから成り、該撮影レンズ鏡胴を前記マウントに対して
前後方向に移動させてカメラ側の結像面に焦点合わせを
行う撮影レンズ鏡胴装置に於いて、 前記マウント、又は撮影レンズ鏡胴には、撮影レンズの
種類に応じて撮影レンズ鏡胴をカメラ側の結像面に焦点
合わせするようにマウントに対して位置調整する位置決
め用部材が、撮影レンズの種類毎に設けられることを特
徴とする撮影レンズ鏡胴装置。1. A mount which is mounted on the camera side, and a taking lens barrel which is supported by the mount so as to be movable in the front-back direction. The taking lens barrel is moved in the front-back direction with respect to the mount. In the photographing lens barrel device for focusing on the image plane on the camera side, the mount or the photographing lens barrel has the photographing lens barrel according to the type of the photographing lens. A photographic lens barrel device, wherein a positioning member for adjusting the position with respect to the mount so as to focus on the photographic lens is provided for each type of photographic lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17691094A JP3438220B2 (en) | 1994-07-28 | 1994-07-28 | Camera lens barrel device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17691094A JP3438220B2 (en) | 1994-07-28 | 1994-07-28 | Camera lens barrel device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0843705A true JPH0843705A (en) | 1996-02-16 |
| JP3438220B2 JP3438220B2 (en) | 2003-08-18 |
Family
ID=16021900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17691094A Expired - Fee Related JP3438220B2 (en) | 1994-07-28 | 1994-07-28 | Camera lens barrel device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3438220B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6992845B2 (en) | 2004-02-23 | 2006-01-31 | Leica Camera Ag | Interchangeable objective for integrated rangefinder cameras |
| KR100673966B1 (en) * | 1999-09-16 | 2007-01-24 | 삼성테크윈 주식회사 | Apparatus for detecting focus |
| CN1316278C (en) * | 2001-05-15 | 2007-05-16 | 奥林巴斯光学工业株式会社 | Lens cylinder |
| DE102006036890A1 (en) * | 2006-08-04 | 2008-02-14 | Leica Camera Ag | cylinder rings |
| CN100401123C (en) * | 2002-03-28 | 2008-07-09 | 精工爱普生株式会社 | Projective lens, method for making projective lens and projector installed with projective lens |
| KR20190123516A (en) * | 2018-04-24 | 2019-11-01 | 한화테크윈 주식회사 | Lens assembly for a security camera and security camera having the same |
-
1994
- 1994-07-28 JP JP17691094A patent/JP3438220B2/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100673966B1 (en) * | 1999-09-16 | 2007-01-24 | 삼성테크윈 주식회사 | Apparatus for detecting focus |
| CN1316278C (en) * | 2001-05-15 | 2007-05-16 | 奥林巴斯光学工业株式会社 | Lens cylinder |
| CN100401123C (en) * | 2002-03-28 | 2008-07-09 | 精工爱普生株式会社 | Projective lens, method for making projective lens and projector installed with projective lens |
| US6992845B2 (en) | 2004-02-23 | 2006-01-31 | Leica Camera Ag | Interchangeable objective for integrated rangefinder cameras |
| DE102006036890A1 (en) * | 2006-08-04 | 2008-02-14 | Leica Camera Ag | cylinder rings |
| DE102006036890B4 (en) * | 2006-08-04 | 2008-07-31 | Leica Camera Ag | cylinder rings |
| US8931992B2 (en) | 2006-08-04 | 2015-01-13 | Leica Camera Ag | Cylinder rings |
| KR20190123516A (en) * | 2018-04-24 | 2019-11-01 | 한화테크윈 주식회사 | Lens assembly for a security camera and security camera having the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3438220B2 (en) | 2003-08-18 |
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