JPH0410583Y2 - - Google Patents

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Publication number
JPH0410583Y2
JPH0410583Y2 JP4483787U JP4483787U JPH0410583Y2 JP H0410583 Y2 JPH0410583 Y2 JP H0410583Y2 JP 4483787 U JP4483787 U JP 4483787U JP 4483787 U JP4483787 U JP 4483787U JP H0410583 Y2 JPH0410583 Y2 JP H0410583Y2
Authority
JP
Japan
Prior art keywords
aperture
lens
aperture value
barrel
drive
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
Application number
JP4483787U
Other languages
Japanese (ja)
Other versions
JPS63153236U (en
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 filed Critical
Priority to JP4483787U priority Critical patent/JPH0410583Y2/ja
Publication of JPS63153236U publication Critical patent/JPS63153236U/ja
Application granted granted Critical
Publication of JPH0410583Y2 publication Critical patent/JPH0410583Y2/ja
Expired legal-status Critical Current

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  • Focusing (AREA)
  • Lens Barrels (AREA)
  • Structure And Mechanism Of Cameras (AREA)

Description

【考案の詳細な説明】 「技術分野」 本考案は、AF(Auto Focus,自動焦点)一眼
レフカメラのボデイと、AF機能を持たない交換
レンズとの間に装着して、自動焦点を可能とする
AFリヤアダプタに関する。
[Detailed explanation of the invention] "Technical field" This invention is an AF (Auto Focus) SLR camera that can be attached between the body of a single-lens reflex camera and an interchangeable lens that does not have an AF function to enable automatic focusing. do
Regarding AF rear adapter.

「従来技術およびその問題点」 通常のAF一眼レフカメラは、ボデイ側の駆動
系により、交換レンズに内蔵した焦点調節系を駆
動して、焦点調節を行なう。これに対し、本考案
の対象とするリヤアダプタは、それ自体焦点調節
用レンズを備え、この焦点調節用レンズをボデイ
側の駆動系によつて光軸方向に移動させることに
より、AF用の連動機構を持たない交換レンズに
ついても、自動焦点を可能としたものである。つ
まり自動焦点調節については交換レンズ側の焦点
調節レンズを利用することはない。これに対し絞
装置は、交換レンズ側の絞装置を利用し、これを
ボデイ側の駆動機構によつて駆動する。
"Prior Art and its Problems" In a normal AF single-lens reflex camera, a focus adjustment system built into the interchangeable lens is driven by a drive system on the body side to adjust the focus. In contrast, the rear adapter that is the object of the present invention is equipped with a focus adjustment lens itself, and by moving this focus adjustment lens in the optical axis direction by a drive system on the body side, Automatic focusing is also possible for interchangeable lenses that do not have a mechanism. In other words, for automatic focus adjustment, the focus adjustment lens on the interchangeable lens side is not used. On the other hand, the diaphragm device uses the diaphragm device on the interchangeable lens side and drives it by a drive mechanism on the body side.

このAFリヤアダプタはしたがつて、ボデイ側
の駆動系から動力を伝達されて回転し、焦点調節
レンズを光軸方向に移動させる焦点調節用回動筒
と、ボデイ側の自動絞駆動部材の回動を交換レン
ズの自動絞部材に伝達する絞駆動用回動筒と、交
換レンズ側の設定絞値をボデイ側に伝達する絞値
伝達用回動筒とを備える。ところが従来品にあつ
ては、この焦点調節用回動筒と、絞駆動用回動筒
と、絞値伝達用回動筒とがそれぞれ別個に固定筒
に回動自在に支持されており、このため固定筒の
形状が複雑化したり、余分にスペースを必要とす
るという問題があつた。
This AF rear adapter therefore rotates with power transmitted from the drive system on the body side, and includes a rotating focusing barrel that moves the focusing lens in the optical axis direction, and an automatic diaphragm drive member on the body side. The lens includes a rotary barrel for driving the diaphragm that transmits the movement to the automatic diaphragm member of the interchangeable lens, and a rotary barrel for transmitting the aperture value that transmits the aperture value set on the interchangeable lens side to the body side. However, in conventional products, the rotary barrel for focus adjustment, the rotary barrel for driving the aperture, and the rotary barrel for transmitting aperture value are each rotatably supported by a fixed barrel. Therefore, there were problems in that the shape of the fixed cylinder became complicated and additional space was required.

「考案の目的」 本考案は、以上の問題点の発見に基づき、より
効率的に焦点調節用回動筒と自動絞用回動筒と絞
駆動用回動筒とを回動自在に支持できる支持構造
を提案し、固定筒の形状の単純化、スペースの効
率利用を図ることを目的とする。
"Purpose of the invention" Based on the discovery of the above-mentioned problems, the present invention is capable of more efficiently rotatably supporting the rotating barrel for focusing, the rotating barrel for automatic aperture, and the rotating barrel for driving the aperture. The purpose of this study is to propose a support structure, simplify the shape of the fixed tube, and use space efficiently.

「考案の概要」 本考案は、焦点調節用回動筒、自動絞用回動
筒、および絞値伝達用回動筒のいずれもが、光軸
方向移動は不要(有害)で、回動のみすれば足り
る点に着目し、焦点調節用回動筒または絞値伝達
用回動筒に、回動抵抗の少ない転動自在なボール
を介して、絞駆動用回動筒を回動自在に支持した
ことを特徴としている。すなわち、本考案は、そ
れ自身回動する焦点調節用回動筒または絞値伝達
用回動筒に対して、さらに独立させて絞駆動用回
動筒を回動自在に支持するため、回動抵抗の少な
い転動自在なボールを介して、これを支持したこ
とに特徴を有する。
``Summary of the invention'' This invention eliminates the need for movement in the optical axis direction (harmful) for the focus adjustment rotating barrel, automatic diaphragm rotating barrel, and aperture value transmission rotating barrel. Focusing on the point that it is sufficient to do this, we supported the aperture drive rotary tube rotatably on the focus adjustment rotary tube or the aperture value transmission rotary tube via a freely rolling ball with low rotational resistance. It is characterized by what it did. That is, the present invention rotatably supports the aperture drive rotary tube independently of the focus adjustment rotary tube or the aperture value transmission rotary tube that rotates itself. It is distinctive in that it is supported via balls that can roll freely with little resistance.

「考案の実施例」 以下図示実施例について本考案を説明する。第
7図はAF一眼レフカメラのボデイBの正面図で、
そのボデイマウント11には、図示しない駆動系
によつて回転駆動されるジヨイント軸12が設け
られ、ボデイマウント11の内周一部には、シヤ
ツタレリーズ時に矢印A方向に移動する絞駆動部
材13が設けられている。
``Embodiments of the invention'' The invention will be described below with reference to illustrated embodiments. Figure 7 is a front view of body B of an AF single-lens reflex camera.
The body mount 11 is provided with a joint shaft 12 that is rotationally driven by a drive system (not shown), and a diaphragm drive member 13 that moves in the direction of arrow A when the shutter is released is provided on a part of the inner circumference of the body mount 11. It is provided.

第8図は本考案の対象とするリヤアダプタによ
つてAFが可能となる交換レンズLの背面図で、
そのレンズマウント14には、絞駆動部材13に
よつて駆動される自動絞部材15が設けられてい
る。また交換レンズの絞値設定環とともに回動す
る絞値伝達突起16が設けられていて、この絞値
伝達突起16は、ボデイBへの装着時に絞値読取
突起17と係合する。しかしジヨイント軸12と
噛み合う焦点調節用ジヨイント(被動軸)は設け
られていない。
Figure 8 is a rear view of an interchangeable lens L that enables AF using the rear adapter that is the object of the present invention.
The lens mount 14 is provided with an automatic diaphragm member 15 driven by the diaphragm drive member 13 . Further, an aperture value transmission protrusion 16 that rotates together with the aperture value setting ring of the interchangeable lens is provided, and this aperture value transmission protrusion 16 engages with an aperture value reading protrusion 17 when attached to the body B. However, a focusing joint (driven shaft) that meshes with the joint shaft 12 is not provided.

絞駆動部材13は、周知のように、シヤツタボ
タンが押されると、シヤツタがレリーズされる前
に矢印A方向に移動し、自動絞部材15を同方向
に移動させて交換レンズ内部の絞機構を設定され
た絞値まで絞り込む作用をする。このような自動
絞機構は従来多数知られている。
As is well known, when the shutter button is pressed, the aperture drive member 13 moves in the direction of arrow A before the shutter is released, moves the automatic aperture member 15 in the same direction, and sets the aperture mechanism inside the interchangeable lens. It works to narrow down the aperture to the specified aperture value. Many such automatic diaphragm mechanisms are known in the past.

第1図ないし第6図は本考案によるAFリヤア
ダプタ20の実施例を示す。このリヤアダプタ
は、固定筒21の前後にそれぞれ、交換レンズL
のレンズマウント14を装着するボデイマウント
11Aと、ボデイBのボデイマウント11に装着
するレンズマウント14Aを有する。23は、固
定筒21の外周に固定する飾環である。レンズマ
ウント14Aには、ボデイB側のジヨイント軸1
2の噛み合う被動軸32と、同絞駆動部材13と
係合する自動絞部材15aと、同絞値読取突起1
7と係合する絞値伝達突起16aとが設けられて
いる。
1 to 6 show an embodiment of an AF rear adapter 20 according to the present invention. This rear adapter has interchangeable lenses L at the front and rear of the fixed barrel 21, respectively.
The camera has a body mount 11A to which the lens mount 14 of the body B is attached, and a lens mount 14A to which the body mount 11 of the body B is attached. 23 is a decorative ring fixed to the outer periphery of the fixed cylinder 21. The lens mount 14A has joint axis 1 on the body B side.
2, the automatic diaphragm member 15a that engages with the diaphragm drive member 13, and the aperture value reading protrusion 1.
An aperture value transmission protrusion 16a that engages with the aperture value transmission protrusion 7 is provided.

固定筒21の内周部には、固定ねじ24を介し
てリード溝(またはカム溝)25aを有するリー
ド筒25が固定され、このリード筒25の内周に
レンズ枠26が回動および光軸方向移動可能に支
持されている。レンズ枠26には焦点調節レンズ
27が固定されている。またリード筒25の外周
には焦点調節用回動筒28が回動自在に支持され
ており、この焦点調節用回動筒28の内面には、
光軸と平行な駆動溝28aが切られている。そし
てレンズ枠26の外周に突出させたガイドローラ
30は、リード筒25のリード溝25a、および
焦点調節用回動筒28の駆動溝28aの両者に嵌
まつている。したがつて焦点調節用回動筒28を
回動すると、駆動溝28aとリード溝25aの関
係に従つて、レンズ枠26が回動しながら光軸方
向に移動する。なお焦点調節用回動筒28は、リ
ード筒25の外周フランジ25bと抜け止めリン
グ29との間に挟まれて、その光軸方向移動が阻
止され、回動のみ自由となつている。
A lead tube 25 having a lead groove (or cam groove) 25a is fixed to the inner circumference of the fixed tube 21 via a fixing screw 24, and a lens frame 26 is attached to the inner circumference of the lead tube 25 so as to rotate and rotate the optical axis. Supported for directional movement. A focusing lens 27 is fixed to the lens frame 26. Further, a focus adjusting rotary tube 28 is rotatably supported on the outer periphery of the lead tube 25, and on the inner surface of the focus adjusting rotary tube 28,
A drive groove 28a parallel to the optical axis is cut. The guide roller 30 protruding from the outer periphery of the lens frame 26 is fitted into both the lead groove 25a of the lead tube 25 and the drive groove 28a of the focusing rotary tube 28. Therefore, when the focusing rotary barrel 28 is rotated, the lens frame 26 is rotated and moved in the optical axis direction according to the relationship between the drive groove 28a and the lead groove 25a. Note that the focusing rotary tube 28 is sandwiched between the outer peripheral flange 25b of the lead tube 25 and the retaining ring 29, and is prevented from moving in the optical axis direction, and is only free to rotate.

この焦点調節用回動筒28には、セクタギヤ3
1が固定され、このセクタギヤ31は、ボデイB
のジヨイント軸12と係合する被動軸32および
これと噛み合うギヤ列34に噛み合つている(第
3図ないし第5図参照)。被動軸32は、第5図、
第6図に示すように、レンズマウント14Aに設
けられていて、レンズマウント14AをボデイB
のボデイマウント11に装着すると、ジヨイント
軸12と噛み合つてその回転が伝達される。
The focus adjustment rotary barrel 28 includes a sector gear 3.
1 is fixed, and this sector gear 31 is connected to body B.
The driven shaft 32 engages with the joint shaft 12 of the drive shaft 32 and the gear train 34 meshes with the driven shaft 32 (see FIGS. 3 to 5). The driven shaft 32 is shown in FIG.
As shown in FIG. 6, the lens mount 14A is provided on the body B.
When mounted on the body mount 11, it engages with the joint shaft 12 and its rotation is transmitted.

本考案は、例えば以上のように構成された焦点
調節系において、焦点調節用回動筒28の上に、
絞駆動用回動筒35を回動自在に支持した点に特
徴がある。この絞駆動用回動筒35には光軸と平
行な方向の絞連動杆36が固定されており、この
絞連動杆36のボデイB側の端部が絞駆動部材1
3と係合する自動絞部材15aを構成し、交換レ
ンズL側の端部は、自動絞部材15と係合する絞
駆動部材13aを構成する。
In the present invention, for example, in the focus adjustment system configured as described above, on the focus adjustment rotating barrel 28,
The feature is that the diaphragm driving rotary cylinder 35 is rotatably supported. An aperture interlocking rod 36 extending in a direction parallel to the optical axis is fixed to this aperture driving rotary tube 35, and the end of this aperture interlocking rod 36 on the body B side is connected to the aperture driving member 1.
The end portion on the interchangeable lens L side constitutes an aperture drive member 13a that engages with the automatic aperture member 15.

そこでこの絞駆動用回動筒35の支持構造を説
明すると、焦点調節用回動筒28上には、環状の
V溝37が形成されている。絞駆動用回動筒35
には、このV溝37の一方の斜面と対応する斜面
38が形成されており、この斜面38と止めリン
グ39に形成した斜面40とで、V溝37と対向
するV溝41が構成されている。そしてこのV溝
37と41の間に、ボール42とスペーサ43が
挿入され、焦点調節用回動筒28上での絞駆動用
回動筒35の円滑な回動を可能としている。スペ
ーサ43は、低摩擦性の合成樹脂材料から構成さ
れるもので、ボール42の数を少なくすることが
できる。しかしV溝37と41間に全部ボール4
2を挿入してもよい。
To explain the support structure of the diaphragm drive rotary barrel 35, an annular V-groove 37 is formed on the focus adjustment rotary barrel 28. Rotating tube 35 for diaphragm drive
A slope 38 corresponding to one slope of the V-groove 37 is formed on the V-groove 37, and a V-groove 41 facing the V-groove 37 is formed by this slope 38 and a slope 40 formed on the retaining ring 39. There is. A ball 42 and a spacer 43 are inserted between the V-grooves 37 and 41 to enable smooth rotation of the diaphragm driving rotary tube 35 on the focusing rotary tube 28. The spacer 43 is made of a low-friction synthetic resin material, and the number of balls 42 can be reduced. However, all balls 4 between V grooves 37 and 41
2 may be inserted.

また固定筒21の内周には、絞値伝達用回動筒
44が回動自在に支持されていて、この絞値伝達
用回動筒44に絞値連動杆45が固定されている
(第3図参照)。この絞値連動杆45は、そのボデ
イ側の端部が絞値読取突起17と係合する絞値伝
達突起16aを構成し、レンズL側の端部が絞値
伝達突起16と係合する絞値読取突起17aを構
成する。
Further, on the inner periphery of the fixed barrel 21, a rotating barrel 44 for transmitting aperture value is rotatably supported, and an aperture value interlocking rod 45 is fixed to this rotating barrel 44 for transmitting aperture value. (See Figure 3). The aperture value interlocking rod 45 has an aperture value transmission protrusion 16 a whose end on the body side engages with the aperture value reading protrusion 17 , and an aperture value transmission protrusion 16 a which engages with the aperture value transmission protrusion 16 at its end on the lens L side. This constitutes a value reading protrusion 17a.

上記構成の本AFリヤアダプタ20はしたがつ
て、ボデイBと交換レンズLとの間に正規に装着
すると、その被動軸32がジヨイント軸12に噛
み合う。また絞連動杆36の自動絞部材15aが
絞駆動部材13に係合し、また絞駆動部材13a
は、交換レンズLの自動絞部材15と係合する。
さらに絞値伝達突起16aが絞値読取突起17と
係合し、絞値読取突起17aは交換レンズLの絞
値伝達突起16と係合する。
Therefore, when the present AF rear adapter 20 having the above configuration is properly installed between the body B and the interchangeable lens L, its driven shaft 32 meshes with the joint shaft 12. Further, the automatic diaphragm member 15a of the diaphragm interlocking rod 36 engages with the diaphragm drive member 13, and the diaphragm drive member 13a
engages with the automatic aperture member 15 of the interchangeable lens L.
Furthermore, the aperture value transmission protrusion 16a engages with the aperture value reading protrusion 17, and the aperture value reading protrusion 17a engages with the aperture value transmission protrusion 16 of the interchangeable lens L.

この状態において、シヤツタボタンを押すと、
まずAF制御系からの駆動信号によつてジヨイン
ト軸12が回動駆動され、上記連動系によつて焦
点調節用回動筒28が回動し、その結果、レンズ
枠26(焦点調節レンズ27)が光軸方向に移動
して合焦位置に達する。すなわち交換レンズLと
焦点調節レンズ27との合成レンズ系によつて、
焦点が合う。
In this state, if you press the shutter button,
First, the joint shaft 12 is rotationally driven by a drive signal from the AF control system, and the focus adjustment rotating barrel 28 is rotated by the interlocking system, and as a result, the lens frame 26 (focus adjustment lens 27) is rotated. moves in the direction of the optical axis and reaches the in-focus position. That is, by the composite lens system of the interchangeable lens L and the focusing lens 27,
In focus.

そしてその後、またはこれと同時に、絞駆動部
材13が矢印A方向に移動する。すると、自動絞
部材15a(絞連動杆36)がその力を受けて絞
駆動用回動筒35を一体に焦点調節用回動筒28
上で回動させ、絞駆動部材13aを介して交換レ
ンズLの自動絞部材15を駆動する。よつて交換
レンズLの絞機構は瞬時に設定絞値まで絞り込ま
れる。シヤツタはその後レリーズされる。
After that, or at the same time, the aperture drive member 13 moves in the direction of arrow A. Then, the automatic diaphragm member 15a (diaphragm interlocking rod 36) receives the force and integrally moves the diaphragm drive rotating barrel 35 to the focus adjustment rotating barrel 28.
The automatic diaphragm member 15 of the interchangeable lens L is driven via the diaphragm drive member 13a. Therefore, the aperture mechanism of the interchangeable lens L is instantaneously stopped down to the set aperture value. The shutter is then released.

なお上記実施例では、絞駆動用回動筒35を焦
点調節用回動筒28に回動自在に支持したが、絞
駆動用回動筒35を、その外側に回動自在に位置
する絞値伝達用回動筒44上(内面)に回動自在
に支持することもできる。この場合の支持態様
は、例えば、絞値伝達用回動筒44の内面に環状
V溝を設け、これに絞駆動用回動筒35の外周部
に構成するV溝を対応させて、両V溝の間に実施
例のようなボールとスペーサを挿入すればよい。
In the above embodiment, the diaphragm driving rotary tube 35 is rotatably supported by the focusing rotary tube 28, but the diaphragm driving rotary tube 35 is rotatably supported on the outside of the aperture drive rotary tube 35. It can also be rotatably supported on the transmission rotary cylinder 44 (inner surface). In this case, for example, an annular V-groove is provided on the inner surface of the aperture value transmission rotary tube 44, and a V-groove formed on the outer circumference of the aperture drive rotary tube 35 is made to correspond to the annular V-groove. A ball and a spacer as in the embodiment may be inserted between the grooves.

「考案の効果」 以上のように本考案は、AFリヤアダプタにお
いて、ボデイ側の自動絞駆動部材の回動を交換レ
ンズの自動絞部材に伝達する絞駆動用回動筒を、
ボデイ側の駆動系から動力を伝達されて回転し、
焦点調節レンズを光軸方向に移動させる焦点調節
用回動筒、または交換レンズ側の設定絞値をボデ
イ側に伝達する絞値伝達用回動筒の上に回動自在
に支持したから、これら回動筒を個別に固定筒に
回動自在に支持されていた従来品に比して、その
支持構造を単純化することができる。特に絞駆動
用回動筒は、転動自在なボールを介して、焦点調
節用回動筒または絞値伝達用回動筒に回動自在に
支持されているから、自身が回動するこの焦点調
節用回動筒または絞値伝達用回動筒の回動に影響
を与えることなく、回動可能であり、従つて、
AFリヤアダプタとしての機能を損なうことがな
い。またスペースの有効利用が図れ、小型化に寄
与する。
"Effects of the Invention" As described above, the present invention provides an AF rear adapter with an aperture drive rotating barrel that transmits the rotation of the automatic aperture drive member on the body side to the automatic aperture member of the interchangeable lens.
Power is transmitted from the drive system on the body side and rotates.
Because the focus adjustment lens is rotatably supported on the focus adjustment rotary tube that moves it in the optical axis direction, or on the aperture value transmission rotary tube that transmits the set aperture value on the interchangeable lens side to the body side, these The support structure can be simplified compared to conventional products in which rotating tubes are individually rotatably supported by fixed tubes. In particular, the diaphragm driving rotary tube is rotatably supported by the focus adjustment rotary tube or the aperture value transmission rotary tube via a freely rolling ball, so that the focal point that rotates itself It is rotatable without affecting the rotation of the adjustment rotary tube or the aperture value transmission rotary tube, and therefore,
It does not impair its function as an AF rear adapter. In addition, space can be used effectively, contributing to miniaturization.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本考案のAFリヤアダプタの実施例を
示す縦断面図、第2図はリード筒のリード溝と焦
点調節用回動筒の駆動溝の関係を示す展開図、第
3図は焦点調節用回動筒と絞駆動用回動筒の支持
態様を示す分解斜視図、第4図は同組立状態の拡
大断面図、第5図は被動軸からセクタギヤに至る
動力伝達系を示す断面図、第6図は本考案のAF
リヤアダプタの背面図、第7図はAF一眼レフカ
メラのボデイの正面図、第8図はこのボデイに装
着する、AF機能を持たない交換レンズの背面図
である。 B……ボデイ、L……交換レンズ、11,11
A……ボデイマウント、12……ジヨイント軸、
13,13a……絞駆動部材、14,14A……
レンズマウント、15,15a……自動絞部材、
16,16a……絞値伝達突起、17,17a…
…絞値読取突起、20……AFリヤアダプタ、2
1……固定筒、25……リード筒、25a……リ
ード溝、26……レンズ枠、27……焦点調節レ
ンズ、28……焦点調節用回転筒、28a……駆
動溝、30……ガイドローラ、31……セクタギ
ヤ、32……被動軸、35……絞駆動用回動筒、
36……絞連動杆、37,41……V溝、38,
40……斜面、42……ボール、43……スペー
サ、44……絞値伝達用回動筒、45……絞値連
動杆。
Fig. 1 is a vertical cross-sectional view showing an embodiment of the AF rear adapter of the present invention, Fig. 2 is an exploded view showing the relationship between the lead groove of the lead tube and the drive groove of the focusing rotary tube, and Fig. 3 is a focus view. An exploded perspective view showing how the adjusting rotary tube and the diaphragm drive rotary tube are supported, FIG. 4 is an enlarged sectional view of the assembled state, and FIG. 5 is a sectional view showing the power transmission system from the driven shaft to the sector gear. , Figure 6 shows the AF of this invention.
Figure 7 is a rear view of the rear adapter, Figure 7 is a front view of the body of an AF single-lens reflex camera, and Figure 8 is a rear view of an interchangeable lens that does not have an AF function and is attached to this body. B...Body, L...Interchangeable lens, 11, 11
A...Body mount, 12...Joint shaft,
13, 13a... Aperture drive member, 14, 14A...
Lens mount, 15, 15a... automatic aperture member,
16, 16a... Aperture value transmission projection, 17, 17a...
...Aperture reading protrusion, 20...AF rear adapter, 2
DESCRIPTION OF SYMBOLS 1... Fixed tube, 25... Lead tube, 25a... Lead groove, 26... Lens frame, 27... Focus adjustment lens, 28... Rotating barrel for focus adjustment, 28a... Drive groove, 30... Guide Roller, 31... Sector gear, 32... Driven shaft, 35... Rotating cylinder for diaphragm drive,
36... Throttle interlocking rod, 37, 41... V groove, 38,
40... Slope, 42... Ball, 43... Spacer, 44... Rotating tube for transmitting aperture value, 45... Aperture value interlocking rod.

Claims (1)

【実用新案登録請求の範囲】 オートフオーカス一眼レフカメラのボデイと、
交換レンズの間に装着されるリヤアダプタであつ
て、 焦点調節レンズと;ボデイ側の駆動系から動力
を伝達されて定位置で回転し、上記焦点調節レン
ズを光軸方向に移動させる焦点調節用回動筒と;
ボデイ側の自動絞駆動部材の回動を上記交換レン
ズの自動絞部材に伝達する、定位置で回転する絞
駆動用回動筒と;交換レンズ側の設定絞値をボデ
イ側に伝達する、定位置で回転する絞値伝達用回
動筒とを備え、 かつ上記絞駆動用回動筒が、上記焦点調節用回
動筒または絞値伝達用回動筒に、転動自在なボー
ルを介して回動自在に支持されていることを特徴
とする一眼レフカメラ用AFリヤアダプタ。
[Scope of utility model registration claim] The body of an autofocus single-lens reflex camera,
A rear adapter that is installed between interchangeable lenses, and includes a focusing lens; a focusing lens that rotates at a fixed position by receiving power from a drive system on the body side and moves the focusing lens in the optical axis direction. Rotating tube;
an aperture drive rotation barrel that rotates in a fixed position and transmits the rotation of the automatic aperture drive member on the body side to the automatic aperture member of the interchangeable lens; and a rotating barrel for aperture value transmission that rotates in position, and the rotating barrel for driving the aperture is connected to the rotating barrel for focus adjustment or the rotating barrel for transmitting the aperture value via a freely rolling ball. An AF rear adapter for single-lens reflex cameras that is rotatably supported.
JP4483787U 1987-03-26 1987-03-26 Expired JPH0410583Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4483787U JPH0410583Y2 (en) 1987-03-26 1987-03-26

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4483787U JPH0410583Y2 (en) 1987-03-26 1987-03-26

Publications (2)

Publication Number Publication Date
JPS63153236U JPS63153236U (en) 1988-10-07
JPH0410583Y2 true JPH0410583Y2 (en) 1992-03-16

Family

ID=30863024

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4483787U Expired JPH0410583Y2 (en) 1987-03-26 1987-03-26

Country Status (1)

Country Link
JP (1) JPH0410583Y2 (en)

Also Published As

Publication number Publication date
JPS63153236U (en) 1988-10-07

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