JPH0421852B2 - - Google Patents
Info
- Publication number
- JPH0421852B2 JPH0421852B2 JP56172776A JP17277681A JPH0421852B2 JP H0421852 B2 JPH0421852 B2 JP H0421852B2 JP 56172776 A JP56172776 A JP 56172776A JP 17277681 A JP17277681 A JP 17277681A JP H0421852 B2 JPH0421852 B2 JP H0421852B2
- Authority
- JP
- Japan
- Prior art keywords
- camera
- lens
- mount
- interchangeable lens
- contacts
- 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 - Lifetime
Links
- 230000003287 optical effect Effects 0.000 claims description 21
- 238000010586 diagram Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000615 nonconductor Substances 0.000 description 1
- 238000010572 single replacement reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/02—Bodies
- G03B17/12—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
- G03B17/14—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets interchangeably
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Exposure Control For Cameras (AREA)
- Structure And Mechanism Of Cameras (AREA)
Description
【発明の詳細な説明】
本発明はカメラシステムのマウント構造の改良
に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in the mounting structure of a camera system.
カメラにおいて、交換レンズをカメラボデイに
取り付けたり両者を電気的に接続する方式として
は種々のものが知られている。例えば実開昭51−
155643号には、カメラボデイのマウントの内周面
に放射状に可動な半球上の可動接点を設けて、交
換レンズを挿入した際、その円筒部の外周面（固
定接点）で上記接点を半径方向外方に移動させる
やり方が開示されている。しかしながら、上記固
定接点及び半球状接点の曲率は、交換レンズとカ
メラボデイとの位置合せ誤差等を考慮してある一
定以上の大きさとせねばならず、交換レンズ、マ
ウント等の大形化につながる。また、固定接点及
び半球状接点の位置精度が厳しく要求され、製造
上もコストの上昇を招くことになる。 In cameras, various methods are known for attaching an interchangeable lens to a camera body and for electrically connecting the two. For example, in 1977-
In No. 155643, a radially movable hemispherical movable contact is provided on the inner circumferential surface of the camera body mount, and when an interchangeable lens is inserted, the outer circumferential surface (fixed contact) of the cylindrical part moves the contact in the radial direction. A method of outward displacement is disclosed. However, the curvature of the fixed contact and the hemispherical contact must be greater than a certain value in consideration of alignment errors between the interchangeable lens and the camera body, which leads to an increase in the size of the interchangeable lens, mount, etc. . Furthermore, the positional accuracy of the fixed contacts and the hemispherical contacts is strictly required, leading to an increase in manufacturing costs.
本発明は、上記従来技術の欠点を解消するこ
と、すなわち、接点の配列、交換レンズの位置決
め精度等がそれほど良くなくとも、接点同士が確
実に接触し、接点数が増えても交換レンズとカメ
ラボデイとの電気的接続が良好に達成されるマウ
ント構造を有するカメラシステムを提供すること
を目的としてなされたものである。 The present invention solves the drawbacks of the prior art described above, that is, even if the arrangement of the contacts and the positioning accuracy of the interchangeable lens are not so good, the contacts can reliably contact each other, and even if the number of contacts increases, the interchangeable lens and camera The object of this invention is to provide a camera system having a mount structure that allows good electrical connection to the body.
以下、本発明の実施例を図面をもとに説明す
る。 Embodiments of the present invention will be described below with reference to the drawings.
第１図及び第２図において交換レンズ１０の本
体１１には、絞り調節用リング１２及び距離調節
用リング１３が回転可能に嵌合されるとともに、
レンズバヨネツト１４が取り付けられている。距
離調節リング１３を回転すると、焦点調節用可動
レンズ１５を保持する可動レンズ保持部材１６が
光軸方向に前後動し、焦点を調節する。この可動
レンズ保持部材１６とレンズバヨネツト１４との
間には、光軸方向に突出した突出部材１７が位置
固定に設けられ、レンズの保護、外観向上などの
役割を果たしている。突出部材１７の本体（円筒
状部材）には光軸方向に穴１８があけられてお
り、絞り制御レバー１９がこの穴１８に挿入され
ている。当該レバー１９はカメラボデイ内の機構
と連動して絞り調節用リング１２により設定され
た絞り値を制御する。 In FIGS. 1 and 2, an aperture adjustment ring 12 and a distance adjustment ring 13 are rotatably fitted into the main body 11 of the interchangeable lens 10, and
A lens bayonet 14 is attached. When the distance adjustment ring 13 is rotated, the movable lens holding member 16 that holds the focus adjustment movable lens 15 moves back and forth in the optical axis direction to adjust the focus. A protruding member 17 protruding in the optical axis direction is fixedly provided between the movable lens holding member 16 and the lens bayonet 14, and serves to protect the lens and improve its appearance. A hole 18 is bored in the main body (cylindrical member) of the protruding member 17 in the optical axis direction, and an aperture control lever 19 is inserted into this hole 18. The lever 19 controls the aperture value set by the aperture adjustment ring 12 in conjunction with a mechanism within the camera body.
突出部材１７の本体には、不導体製でかつ円筒
部材の一部から成る形状の接点保持部材２５が挿
入されており、ビス２０によりレンズバヨネツト
１４に固定されている。保持部材２５の端部はバ
ヨネツト１４の端部から突出している。この突出
端部は、第１図より明らかなように大径部２５ａ
と、小径部２５ｂと、両部分を接続する円周方向
のカム部２５ｃとから成る。なお、小径部２５ｂ
は本件発明のレンズマウント近傍の基準面に相当
する。 A contact holding member 25 made of a non-conductor and having a shape of a part of a cylindrical member is inserted into the main body of the protruding member 17, and is fixed to the lens bayonet 14 with screws 20. The end of the retaining member 25 projects from the end of the bayonet 14. As is clear from FIG.
, a small diameter portion 25b, and a circumferential cam portion 25c connecting both portions. Note that the small diameter portion 25b
corresponds to the reference plane near the lens mount of the present invention.
接点保持部材２５には導体製の接片２６が複数
個固定されており、その一端は保持部材の小径部
２５ｂより外側に突出した大径部２５ａに露出さ
れるとともに、他端はコード２７によつて交換レ
ンズ内の電気回路（図示せず）に接続されてい
る。これらは部組化され、レンズ側のコネクタ部
を形成している。 A plurality of contact pieces 26 made of a conductor are fixed to the contact holding member 25, one end of which is exposed at the large diameter portion 25a that protrudes outward from the small diameter portion 25b of the holding member, and the other end is connected to the cord 27. Therefore, it is connected to an electrical circuit (not shown) within the interchangeable lens. These parts are assembled into parts to form a connector part on the lens side.
一方、カメラボデイ３０にはマウント３１が固
定されるとともに箱状の接点保持部材３２が取り
付けられており、その中に接片２６と同数の接点
３３が光軸と直角な半径方向に移動可能に取り付
けられ、圧縮コイルばね３４によつて半径方向に
付勢されている。各接点３３は第４図に示すよう
に光軸Ｏと直角な円周上に２列に配置されてい
る。バネ３４は導体製の接片３５に接触してお
り、この接片３５はコード３６を介してカメラボ
デイ内の回路（図示せず）に接続されている。こ
れら保持部材３２、接点３３及び接片３５等によ
つてカメラボデイ側のコネクタが形成されてい
る。 On the other hand, a mount 31 is fixed to the camera body 30, and a box-shaped contact holding member 32 is attached thereto, in which the same number of contacts 33 as the contact pieces 26 are movable in a radial direction perpendicular to the optical axis. attached and radially biased by a compression coil spring 34. The contacts 33 are arranged in two rows on a circumference perpendicular to the optical axis O, as shown in FIG. The spring 34 is in contact with a contact piece 35 made of a conductor, and this contact piece 35 is connected to a circuit (not shown) in the camera body via a cord 36. The holding member 32, the contacts 33, the contact pieces 35, and the like form a connector on the camera body side.
交換レンズ１０のカメラボデイ３０への装着時
には、所定の位置関係にあるレンズバヨネツト１
４とカメラマウント３１の爪を合わせ、交換レン
ズをボデイに挿入する。この時接点保持部材２５
は第３図中二点鎖線で示す位置にある。また、ボ
デイ側の可動接点３３は二点鎖線で示す位置、す
なわち光軸中心Ｏから半径ｒの位置にある。この
半径ｒは小径部２５ｂの半径R0よりも大きいの
で、この時接点３３と小径部２５ｂが干渉するこ
とはない。 When attaching the interchangeable lens 10 to the camera body 30, the lens bayonet 1 is in a predetermined positional relationship.
4 and the claws of the camera mount 31, and insert the interchangeable lens into the body. At this time, the contact holding member 25
is located at the position indicated by the two-dot chain line in FIG. Further, the movable contact 33 on the body side is located at a position indicated by a two-dot chain line, that is, at a position at a radius r from the optical axis center O. Since this radius r is larger than the radius R 0 of the small diameter portion 25b, there is no interference between the contact 33 and the small diameter portion 25b at this time.
次にレンズ１０を所定の角度θだけ第３図中矢
印の方向に回転（右旋）させ、カメラボデイ３０
に対して交換レンズ１０を固定した時には、交換
レンズ側の固定接点２６は各々ボデイ側の可動接
点３３に対向、接触する。 Next, the lens 10 is rotated (clockwise) by a predetermined angle θ in the direction of the arrow in FIG.
When the interchangeable lens 10 is fixed to the body, the fixed contacts 26 on the interchangeable lens side each face and contact the movable contacts 33 on the body side.
交換レンズ１０をこのように回転する際、ボデ
イ側の可動接点３３は、交換レンズ側の接点保持
部材２５に設けられたカム部２５ｃによりばね３
４の作用に抗して半径方向外方に変位され、光軸
Ｏから半径R1の位置に至る。その結果、ばね３
４に所定のたわみが与えられ、接点３３は一定の
接触圧で接点２６に接触することとなる。 When rotating the interchangeable lens 10 in this manner, the movable contact 33 on the body side is moved by the spring 3 by the cam portion 25c provided on the contact holding member 25 on the interchangeable lens side.
4 and is displaced radially outwards to a position at a radius R 1 from the optical axis O. As a result, spring 3
4 is given a predetermined deflection, and the contact 33 comes into contact with the contact 26 with a constant contact pressure.
カメラボデイ３０側の接点３３は、第４図に示
すように光軸方向の異なる軌道上に２列に配置さ
れ、各列の接点３３が１つおきに交互に配置され
ている。 The contacts 33 on the camera body 30 side are arranged in two rows on different orbits in the optical axis direction, as shown in FIG. 4, and the contacts 33 in each row are arranged alternately every other row.
また前記実施例では交換レンズ側接点２６はす
べて大径部２５ａに設けたが、少なくとも１つ以
上の接点をカム部２５ｃ上に設けてもかまわな
い。（ただしこの場合たわみ量が各接点間で同一
値にならないので、接触圧を同一値にするには、
ばねの定数を各ばね毎に設定しなければならな
い。）
さらにカメラボデイ側の接点は前記圧縮コイル
ばねの代わりに、例えば導電性のゴム又は板ばね
等で付勢して良い。 Furthermore, in the embodiment described above, all of the interchangeable lens side contacts 26 are provided on the large diameter portion 25a, but at least one or more contacts may be provided on the cam portion 25c. (However, in this case, the amount of deflection will not be the same between each contact, so to make the contact pressure the same value,
The spring constant must be set for each spring. ) Furthermore, the contact on the camera body side may be biased by, for example, a conductive rubber or a plate spring instead of the compression coil spring.
次に、本発明の別の実施例について第５図乃至
第８図をもとに説明する。これは第８図に示すよ
うに可動接点３３の分布角αが交換レンズ１０の
回転角θよりも大きい場合に有効な実施例であ
る。なお、説明の簡略化のため、上記例と対応す
る部分には同一の番号を付して説明を省略し、異
なる部分を中心に説明を行なう。 Next, another embodiment of the present invention will be described with reference to FIGS. 5 to 8. This is an effective embodiment when the distribution angle α of the movable contact 33 is larger than the rotation angle θ of the interchangeable lens 10, as shown in FIG. In order to simplify the explanation, the same numbers are given to the parts corresponding to those in the above example, and the explanation will be omitted, and the explanation will focus on the different parts.
交換レンズ１０の接点保持部材２５はレンズバ
ヨネツト１４に固定されており、その端面には円
周方向においてほぼ半分程度の長さにわたつて光
軸方向のカム面２５ｄが形成されるとともに、側
面には円周方向のカム面２５ｃが形成されてい
る。そしてこの保持部材２５に保持された多数の
接点２６の各端部がその外周面２５ａに露出され
ている。 The contact holding member 25 of the interchangeable lens 10 is fixed to the lens bayonet 14, and a cam surface 25d extending in the optical axis direction is formed on the end surface of the contact holding member 25 over approximately half the length in the circumferential direction. A cam surface 25c in the circumferential direction is formed on. Each end of a large number of contacts 26 held by this holding member 25 is exposed on its outer circumferential surface 25a.
一方、カメラボデイ３０にはマウント３１が固
定されるとともに接点保持部材３２が固定され、
保持部材内には接点２６と同数の可動接点３３が
半径方向に移動可動に設けられている。 On the other hand, a mount 31 is fixed to the camera body 30, and a contact holding member 32 is fixed to the camera body 30.
The same number of movable contacts 33 as the contacts 26 are provided within the holding member so as to be movable in the radial direction.
交換レンズ１０をカメラボデイ３０に装着する
にあたつては、接点保持部材２５が第８図中二点
鎖線にある状態で交換レンズを光軸方向に挿入す
る。その際、複数の可動接点３４のうち第８図に
おいて左寄りの二つの接点３３′，３３″のみが光
軸方向のカム面２５ｄによりばね３４の作用に抗
して半径方向外方に変位され、光軸からの距離は
R0からR1に変化する。なお、カム面２５ｄの最
小径R2は上記半径R0よりも小さく選定されてい
るので、交換レンズ１０の挿入時に接点３３と保
持部材２５とが干渉することはない。 When attaching the interchangeable lens 10 to the camera body 30, the interchangeable lens is inserted in the optical axis direction with the contact holding member 25 positioned as indicated by the two-dot chain line in FIG. At this time, among the plurality of movable contacts 34, only the two contacts 33' and 33'' on the left side in FIG. 8 are displaced radially outward by the cam surface 25d in the optical axis direction against the action of the spring 34, The distance from the optical axis is
Changes from R 0 to R 1 . Note that since the minimum diameter R2 of the cam surface 25d is selected to be smaller than the radius R0 , the contact point 33 and the holding member 25 will not interfere when the interchangeable lens 10 is inserted.
次に交換レンズ１０を光軸Ｏのまわりに角度θ
だけ右旋（第８図において）させると、回転につ
れて上記二本の接点３３′，３３″以外の可動接点
３３は円周方向のカム面２５ｃによつてばね３４
の付勢力に抗して半径方向外方に変位され、光軸
からの距離はR0からR1に変化する。こうして交
換レンズ１０の装着が完了した状態では、第８図
に示すように各可動接点３３はばね３４のたわみ
量に基づく一定の接触圧で接点２６に押圧される
こととなる。なお、交換レンズ１０の回転により
バヨネツト１４とマウント３１とが係合し、交換
レンズがボデイ３０に固定されることは言うまで
もない。 Next, the interchangeable lens 10 is rotated at an angle θ around the optical axis O.
When the movable contacts 33 other than the two contacts 33' and 33'' are rotated to the right (as shown in FIG. 8), the movable contacts 33 other than the two contacts 33' and 33'' are rotated by the spring 34 by the circumferential cam surface 25c.
is displaced radially outward against the urging force of , and the distance from the optical axis changes from R 0 to R 1 . When the attachment of the interchangeable lens 10 is completed in this manner, each movable contact 33 is pressed against the contact 26 with a constant contact pressure based on the amount of deflection of the spring 34, as shown in FIG. It goes without saying that the rotation of the interchangeable lens 10 brings the bayonet 14 into engagement with the mount 31, thereby fixing the interchangeable lens to the body 30.
本例によれば、可動接点３３の分布角αが交換
レンズ１０の回転角θより大きくても、交換レン
ズ１０を支承なくカメラボデイ３０に取りつける
ことができる。 According to this example, even if the distribution angle α of the movable contact 33 is larger than the rotation angle θ of the interchangeable lens 10, the interchangeable lens 10 can be attached to the camera body 30 without support.
以上の如く本願発明によれば、
カメラボデイ側の可動接点の系列が光軸方向
の異なる軌道上に配置されるように成つている
ので、接点数が増えても交換レンズとカメラボ
デイとの電気的接続が良好に達成され、且つ可
動接点の系列が径方向に増えていくのに比べ
て、光束のケレラの影響やボデイが大型化して
しまう等の影響が少なくてすみ、
カメラ側可動接点を２系列に設けているの
で、耐摩耗性が向上し、レンズ側固定接点との
摩耗によつて接点同士の耐久性が低下すること
がなく、
また、カメラボデイから取り外し交換レンズ
を単体にした際に固定接点及び該接点の設けら
れた接点保持部材のレンズマウント側を下にし
て置くようなことがあつても、突出部材がある
ために、直接、レンズマウント側を下にして置
くことができず、固定接点等が汚れたり、損傷
を受けたりすることを防止する効果を奏する。 As described above, according to the present invention, the series of movable contacts on the camera body side are arranged on different orbits in the optical axis direction, so even if the number of contacts increases, the electrical connection between the interchangeable lens and the camera body is In addition, compared to the case where the series of movable contacts increases in the radial direction, the effects of vignetting of the light flux and the increase in body size are reduced, and the movable contacts on the camera side are Because they are provided in two series, wear resistance is improved, and the durability of the contacts does not deteriorate due to wear with the fixed contacts on the lens side. Also, when removed from the camera body and used as a single replacement lens, Even if the fixed contact and the contact holding member provided with the contact are placed with the lens mount side facing down, the protruding member prevents the lens mount side from being placed directly down. First, it has the effect of preventing fixed contacts and the like from becoming dirty or being damaged.
第１図は本発明の実施例を示す斜視図、第２図
はその部分断面図、第３図は同じく作動説明図、
第４図はカメラボデイの接点３３の配列を示す説
明図、第５図は本発明の更に別の実施例を示す斜
視図、第６図、第７図はその部分断面図、第８図
は作動説明図である。
［主要部分の符号の説明］、１０……交換レン
ズ、２５，３２……接点保持部材、２５ｃ……第
１のカム面、２５ｄ……第２のカム面、３０……
カメラボデイ。
FIG. 1 is a perspective view showing an embodiment of the present invention, FIG. 2 is a partial sectional view thereof, and FIG. 3 is a diagram illustrating the operation.
FIG. 4 is an explanatory diagram showing the arrangement of the contacts 33 of the camera body, FIG. 5 is a perspective view showing still another embodiment of the present invention, FIGS. 6 and 7 are partial sectional views thereof, and FIG. It is an operation explanatory diagram. [Description of symbols of main parts], 10... Interchangeable lens, 25, 32... Contact holding member, 25c... First cam surface, 25d... Second cam surface, 30...
camera body.
Claims (1)
交換レンズのレンズマウントを予め定められた角
度位置において光軸方向に挿入した後、一定角度
回動させて該交換レンズを装着できるカメラマウ
ントを有するカメラボデイとからなるカメラシス
テムにおいて、 前記カメラボデイは、前記カメラマウント近傍
に前記カメラマウントの周方向に沿つて配設され
ると共に半径方向に往復動する複数のカメラ側可
動接点と、該複数のカメラ側可動接点を可動方向
に付勢する弾性部材とを備え、該カメラ側可動接
点は、少なくとも２系列に分かれ、互いの系列が
光軸方向の異なる軌道上にあるように配置され、 前記交換レンズは、(a)前記レンズマウント近傍
に前記レンズマウントの周方向に沿つて配設さ
れ、前記複数のカメラ側可動接点とそれぞれ電気
的に導通する複数のレンズ側固定接点と、(b)前記
レンズマウント近傍の基準面より前記複数のカメ
ラ側可動接点の可動方向であつて前記カメラ側可
動接点側に突出し、前記複数のレンズ側固定接点
を表面に露出させてそれぞれ絶縁し保持する接点
保持部材と、(c)前記レンズマウント近傍に配設さ
れ、前記複数のレンズ側固定接点及び前記接点保
持部材を保護するために前記接点保持部材より光
軸方向に外側に突出している突出部材と、(d)前記
接点保持部材の表面より前記基準面へ周方向に向
かつて緩い傾斜で形成され、前記カメラマウント
に対して前記レンズマウントを回動操作する前記
交換レンズの装着時に、その回動操作に伴い前記
複数のカメラ側可動接点を前記弾性部材の付勢力
に抗して変位せしめる斜面部とを備え、 前記交換レンズを装着すると前記２系列に分か
れたカメラ側可動接点は光軸方向の異なる軌道上
で前記斜面部を摺動して通り、装着完了で前記接
点保持部材の表面に露出した前記レンズ側固定接
点にそれぞれ導通することを特徴とするマウント
構造を有するカメラシステム。 ２ 前記交換レンズの前記接点保持部材は、前記
接点保持部材の表面より前記基準面へ光軸方向に
向かつて緩い傾斜で形成され、前記カメラマウン
トに対して前記レンズマウントを光軸方向に挿入
する時に、その挿入操作に伴い前記カメラ側可動
接点を前記弾性部材の付勢力に抗して変位せしめ
る別の斜面部を備えることを特徴とする特許請求
の範囲第１項記載のマウント構造を有するカメラ
システム。[Scope of Claims] 1. An interchangeable lens having a lens mount, and a camera to which the interchangeable lens can be mounted by inserting the lens mount of the interchangeable lens in the optical axis direction at a predetermined angular position and then rotating the interchangeable lens by a certain angle. A camera system comprising a camera body having a mount, wherein the camera body includes a plurality of camera-side movable contacts disposed near the camera mount along the circumferential direction of the camera mount and reciprocating in the radial direction; and an elastic member that biases the plurality of camera-side movable contacts in the movable direction, and the camera-side movable contacts are arranged in at least two series, and the series are arranged on different trajectories in the optical axis direction. , the interchangeable lens includes (a) a plurality of lens-side fixed contacts disposed near the lens mount along the circumferential direction of the lens mount and each electrically connected to the plurality of camera-side movable contacts; b) The plurality of camera-side movable contacts protrude from the reference plane near the lens mount in the movable direction of the camera-side movable contacts, and the plurality of lens-side fixed contacts are exposed to the surface and insulated and held respectively. (c) a protruding member disposed near the lens mount and protruding outward from the contact holding member in the optical axis direction to protect the plurality of lens-side fixed contacts and the contact holding member; and (d) is formed with a gentle slope in the circumferential direction from the surface of the contact holding member toward the reference surface, and when the interchangeable lens is attached to rotate the lens mount with respect to the camera mount, the rotation and a slope portion that displaces the plurality of camera-side movable contacts against the biasing force of the elastic member in response to a movement operation, and when the interchangeable lens is attached, the camera-side movable contacts divided into two series move in the optical axis direction. A camera system having a mount structure, wherein the camera system slides through the slope portion on different trajectories, and is electrically connected to the lens-side fixed contacts exposed on the surface of the contact holding member when mounting is completed. 2. The contact holding member of the interchangeable lens is formed with a gentle slope from the surface of the contact holding member toward the reference plane in the optical axis direction, and the lens mount is inserted into the camera mount in the optical axis direction. A camera having a mount structure according to claim 1, further comprising another slope portion that displaces the camera-side movable contact against the biasing force of the elastic member when the camera-side movable contact is inserted. system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17277681A JPS5875139A (en) | 1981-10-30 | 1981-10-30 | Mount structure of interchangeable lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17277681A JPS5875139A (en) | 1981-10-30 | 1981-10-30 | Mount structure of interchangeable lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5875139A JPS5875139A (en) | 1983-05-06 |
| JPH0421852B2 true JPH0421852B2 (en) | 1992-04-14 |
Family
ID=15948127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17277681A Granted JPS5875139A (en) | 1981-10-30 | 1981-10-30 | Mount structure of interchangeable lens |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5875139A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6161523U (en) * | 1984-09-28 | 1986-04-25 | ||
| US7941045B2 (en) | 2008-10-30 | 2011-05-10 | Panasonic Corporation | Camera body, interchangeable lens unit, and imaging apparatus |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53132340A (en) * | 1977-04-22 | 1978-11-18 | Canon Inc | Applying system for lens open f-value information of lens convertible camer a |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5850335Y2 (en) * | 1975-06-04 | 1983-11-16 | ブロニカ株式会社 | Interchangeable lens connector |
-
1981
- 1981-10-30 JP JP17277681A patent/JPS5875139A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53132340A (en) * | 1977-04-22 | 1978-11-18 | Canon Inc | Applying system for lens open f-value information of lens convertible camer a |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5875139A (en) | 1983-05-06 |
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