JPH02153334A - Spherical surface shutter - Google Patents
Spherical surface shutterInfo
- Publication number
- JPH02153334A JPH02153334A JP30692688A JP30692688A JPH02153334A JP H02153334 A JPH02153334 A JP H02153334A JP 30692688 A JP30692688 A JP 30692688A JP 30692688 A JP30692688 A JP 30692688A JP H02153334 A JPH02153334 A JP H02153334A
- Authority
- JP
- Japan
- Prior art keywords
- shutter
- spherical surface
- spherical
- space
- shutter blade
- 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
- 230000000694 effects Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000009474 immediate action Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Landscapes
- Shutters For Cameras (AREA)
Abstract
Description
【発明の詳細な説明】
？産業上の利用分野〉
本発明は、写真撮影用カメラ等に使用するシャッタに関
するものである。[Detailed description of the invention] ? Industrial Application Field> The present invention relates to a shutter used in a photographic camera or the like.
〈従来の技術〉
従来のシャッタ羽根は第１０図及び第１１図に示すよう
に複数枚の平面薄板１．２から成り、個々のり勅の中心
３．４で回動し、その薄板１．２の１なり状態によって
絞り串を調整している。<Prior art> As shown in FIGS. 10 and 11, a conventional shutter blade consists of a plurality of flat thin plates 1.2, which rotate at the center 3.4 of each blade, and the thin plates 1.2 The squeeze skewer is adjusted depending on the state of 1.
〈発明が解決しようとする課題〉
ところが、前述従来例の平面薄板シャッタでは、＋ｍ
ｔａ絞りの時とピンホールの時とでは、シャッタ羽根１
．２の重なり具合が変化し、開放絞り状態でシャッタ羽
根の占める面積が最大となり、それに必要なだけの十分
なスペースをとらなければならず、Ｉｌｌ筒径やカメラ
本体の大ぎさを大きくしてしまっている。<Problem to be solved by the invention> However, in the conventional flat thin plate shutter mentioned above, +m
In the case of ta aperture and pinhole, shutter blade 1
．． 2, the area occupied by the shutter blades becomes maximum when the aperture is wide open, and sufficient space must be taken for this purpose, which increases the diameter of the Ill cylinder and the size of the camera body. ing.
本発明は、前述従来の問題点に鑑み、平面７１根シヤツ
タ使用に比べて鏡簡径を小さくできる球面シャッタを提
供することを目的とする。SUMMARY OF THE INVENTION In view of the above-mentioned conventional problems, it is an object of the present invention to provide a spherical shutter whose mirror diameter can be made smaller than when using a flat 71-root shutter.
く課題を解決するための手段〉
前記の目的を達成するために、本発明は球面状の空間中
にあって、球面状に形成した複数枚のシャッタ羽根と該
シャッタ羽根が該球面中心を向いた回動中心軸とを有し
、該シャッタ羽根がその間■動作時に該球面状空間に沿
って移動するように構成したものである。Means for Solving the Problems> In order to achieve the above object, the present invention provides a plurality of shutter blades formed in a spherical shape, which are located in a spherical space, and the shutter blades are directed toward the center of the spherical surface. The shutter blade is configured to move along the spherical space during operation.
〈作用〉
以上の構成のシャッタは複数枚のシャッタ羽根を球面状
に形成することにより、シャッタ羽根の有する空間は球
体面のみになり、それによっ−Ｃ光軸に垂直な面に投影
した場合に開放絞り時においてシャッタ羽根の広がり部
の占める面積が平面シャッタの場合のそれよりも小さく
なり、！？Ｉ＠径やカメラ本体の大きさを小さくできる
。<Function> The shutter with the above configuration has a plurality of shutter blades formed into a spherical shape, so that the space occupied by the shutter blades becomes only the spherical surface, so that when projected onto a plane perpendicular to the optical axis When the aperture is wide open, the area occupied by the widening portion of the shutter blade is smaller than that of a flat shutter. ? The I@ diameter and the size of the camera body can be reduced.
〈実施例〉
以下、本発明の一実施例を第１図ないし第６図に基づい
′Ｃ説明する。<Embodiment> An embodiment of the present invention will be described below with reference to FIGS. 1 to 6.
１１．１２は球面状に形成したシャッタ羽根で、それぞ
れ回ｆｉｔ］ｌｔ＊１３．１４を取り付けるための穴１
１ａ、１２ａを有し、かつ羽根を駆動させる駆動ビン１
５が嵌合するための長穴１１ｂ、１２ｂを設けである。11.12 is a shutter blade formed into a spherical shape, and hole 1 for attaching the shutter blade 13.14.
1a and 12a, and a drive bin 1 for driving the blades.
Elongated holes 11b and 12b are provided for fitting.
該回動軸１３．１４は該シャッタ羽根１１．１２が球面
状体表面上にｖＪりようにシャッタ羽根１１．１２の形
成する球面状体の中心Ａに向いており、球面状のシャッ
タ地板２０に回動可能に支持されている。該駆動ビン１
５は該シャッタ羽根２０に軸支１６ａされたアーム１６
の一端に設けられかつその弧状穴２０ａに係合され、ま
た、該アーム１６の他端に設けたヨーク１７とこれに相
対する永久磁石１８から得られる電磁力によって朱印方
向に移動して該シャッタ羽根１１゜１２を駆動させてい
る。１つはシャツタ開口ωを検出するセンサーであるフ
ォトカプラーで、一方のシャッタ羽根１２の端縁に設け
た複数個のスリット１２Ｇにより検出するようになって
いる。The rotation axis 13.14 is oriented toward the center A of the spherical body formed by the shutter blade 11.12 so that the shutter blade 11.12 is placed on the surface of the spherical body, and the spherical shutter base plate 20 It is rotatably supported. The drive bin 1
5 is an arm 16 that is pivotally supported 16a on the shutter blade 20;
The arm 16 is provided at one end and is engaged with the arcuate hole 20a, and is moved in the direction of the red seal by electromagnetic force obtained from the yoke 17 provided at the other end of the arm 16 and the permanent magnet 18 facing the arm 16, and the shutter is moved. The blades 11 and 12 are driven. One is a photocoupler which is a sensor for detecting the shutter opening ω, and is configured to detect the shutter opening ω using a plurality of slits 12G provided at the edge of one shutter blade 12.
以上の構成の本実施例では、第６図の比較図に示すよう
に同じ開放絞り径φＢを得るのに、同図（ａ）の従来例
の平面シャッタの場合より−ｂ同図（ｂ）の球面シャッ
タの場合の方が鏡筒径を従来例のφＤからφＣと小さく
することができる。In this embodiment with the above configuration, as shown in the comparison diagram of FIG. 6, in order to obtain the same open aperture diameter φB, it is possible to obtain -b more than the conventional flat shutter shown in FIG. In the case of the spherical shutter, the diameter of the lens barrel can be reduced from φD in the conventional example to φC.
特に、最近のカメラにおいては鏡筒径を小さくする際に
技術発達により種々の要素を小型化Ｊることができるが
、シャッタの大きさは開放絞り径により物理的に決定さ
れるために従来はその人きさを小さくできなかったのを
、シャッタ羽根を球形状にしてｖｔ筒径の縮小化ができ
る。In particular, in recent cameras, various elements can be made smaller due to technological advances when reducing the diameter of the lens barrel, but since the size of the shutter is physically determined by the open aperture diameter, conventional Although it was not possible to reduce the appearance, the diameter of the VT cylinder can be reduced by making the shutter blades spherical.
第７図ないし第９図は本発明の他の実施例を示ずもので
ある。7 to 9 do not show other embodiments of the present invention.
第７図において、２１．２２はほぼ半球面形状のシャッ
タ羽根で、それぞれその上下に形成した丸穴２１ａ、２
２ａ及び２１ｂ、２２ｂにシャツタ枠２３の上下内面に
それぞれに設けた回動軸と７５１＋
なるビン２４ａ及び２４ｂＮ嵌合され、図示矢印Ｂ方向
（左右方向）に回動できるようになっている。また、該
シャッタ羽根２１．２２には丸穴２１ａ、２２ａの近く
に互いに交差する弧状穴２１Ｃ，２２Ｃを形成し、該弧
状穴２１ｃ、２２Ｃの交差する位置に半円弧状のアーム
２６に突設した駆動ビン２５が嵌合してシャッタ羽根の
りＪきを拘束している。該アーム２６は、その一端に設
けたビン２７によってジャツウ枠２３の一側面に、その
他端に設けた支持部材２９を介してビン２８によってシ
ャッタ枠２３他側面にそれぞれ回動可能に支持されてい
る。該支持部材２９は、その−方にコイル３０を、その
他方に扇形のスリット・板３１をそれぞれ支持じ、該コ
イル３０は該シャツタ枠２３に設けた一対の永久磁石３
２．ヨーク３３の間に位置して電磁力により該アーム２
６を回動するようにし、該スリット・板３１はその周縁
に沿って複数個のスリット３１ａを有しかつ該スリブｒ
−３１８は該シャツタ枠２３の下部に相対して設けたフ
ォトカプラーからなるセンサー３４と反射板３５との間
に位置してシャッタ羽根の開ロ聞ミ検出づるようになっ
ている。３６はトーションばねで、その両端を該スリッ
ト・板３１と該シ＼フッタ枠２３の不動部分にそれぞれ
掛ｔＪて電磁ツノがなくなった時に該７−ム２６及び支
持部材２９を初期位置に戻すためのものである。In FIG. 7, reference numerals 21 and 22 indicate approximately hemispherical shutter blades, and round holes 21a and 2 are formed on the upper and lower sides of the shutter blades, respectively.
2a, 21b, and 22b are fitted with rotating shafts provided on the upper and lower inner surfaces of the shirt shirt frame 23, respectively, and the bins 24a and 24bN, which are 751+, are fitted so that they can be rotated in the direction of arrow B (horizontal direction) shown in the figure. In addition, arcuate holes 21C and 22C are formed near the round holes 21a and 22a in the shutter blades 21 and 22, and a semicircular arcuate arm 26 is provided at the intersection of the arcuate holes 21c and 22C. The driven pin 25 is fitted to restrain the shutter blade glue J. The arm 26 is rotatably supported on one side of the shutter frame 23 by a pin 27 provided at one end thereof, and on the other side of the shutter frame 23 by a pin 28 via a support member 29 provided at the other end. . The support member 29 supports a coil 30 on one side thereof and a fan-shaped slit/plate 31 on the other side, and the coil 30 supports a pair of permanent magnets 3 provided on the shirt shirt frame 23.
2. The arm 2 is located between the yokes 33 and is moved by electromagnetic force.
The slit/plate 31 has a plurality of slits 31a along its periphery, and the slit r
-318 is located between a sensor 34 consisting of a photocoupler and a reflecting plate 35 provided opposite to each other at the lower part of the shutter frame 23, so as to detect the opening and closing of the shutter blade. Reference numeral 36 denotes a torsion spring, and its both ends are hung on the slit/plate 31 and the immovable portion of the shifter frame 23, respectively, to return the 7-arm 26 and the support member 29 to the initial position when the electromagnetic horn disappears. belongs to.
以上の構成の本実施例において、シャッタ羽根２１．２
２は駆動ビン２５及びアーム２６が第７図の前側にある
と閉じ、コイル３０への通電により永久磁石３３から受
ける電磁力により後側に回動づるに従い問い−（くる。In this embodiment with the above configuration, the shutter blade 21.2
2 closes when the drive bin 25 and arm 26 are on the front side in FIG. 7, and open as they rotate rearward due to the electromagnetic force received from the permanent magnet 33 when the coil 30 is energized.
各図はいずれも部材２９のコイル３０が時計方向（図示
接方）−・杯に回動した状態、すなわらシャッタ羽根２
１．２２が開放絞り状態を示しており、コイル３０の回
ｉｕｉであるシャッタ開口量はスリット根３１のスリッ
ト３１ａとセンサー３４゜反射板３５によって検出され
る。また、コイル３０への通電が切れてコイル３０が受
ける？ｌ１４ｉ力がなくなると、トーションばね３６の
付勢力により支持部材２９とともにアーム２６が反時計
方向（図示前方）に回動してシャッタ羽根２１．２２が
閉じる。Each figure shows a state in which the coil 30 of the member 29 is rotated in a clockwise direction (direction as shown), that is, the shutter blade 2
1.22 indicates the open aperture state, and the shutter opening amount, which is the rotation iui of the coil 30, is detected by the slit 31a of the slit root 31 and the sensor 34° reflection plate 35. Also, does the coil 30 receive electricity when the current to the coil 30 is cut off? When the l14i force is removed, the arm 26 together with the support member 29 rotates counterclockwise (forward in the figure) due to the biasing force of the torsion spring 36, and the shutter blades 21, 22 close.
このシャッタは第８図に示すように開放絞り仔は直径φ
Ｂであり、前述実施例同様にその大きさに対し、シャツ
タ枠２３の大きさが小さくなってＪ３す、また、シャッ
タ羽根は球体表面のみの空間を必要とするので、シャツ
タ枠２３内のスペースに部品Ｃ又はＤ８配設でき、さら
に、第９図に示すようにシャッタ羽根内部に例えば部品
Ｅのようなものを挿入してもシャッタの動きは制約を受
けない。As shown in Figure 8, this shutter has an open aperture diameter of φ.
B, and as in the previous embodiment, the size of the shutter frame 23 is smaller than that size, and the shutter blade requires space only on the surface of the sphere, so the space within the shutter frame 23 is Component C or D8 can be disposed in the shutter blade, and even if a component such as component E is inserted inside the shutter blade as shown in FIG. 9, the movement of the shutter is not restricted.
〈発明の効果〉
本発明は、以上説明したようにシャッタ羽根を球面形状
にして球体表面状の空間内を紡かして開開することによ
り、従来の平面薄板シャッタに比べて鏡筒径やカメラ本
体を小さくすることができる効果がある。<Effects of the Invention> As explained above, the present invention makes the shutter blades spherical and opens and opens them by spinning the space inside the spherical surface, thereby reducing the diameter of the lens barrel compared to the conventional flat thin plate shutter. This has the effect of making the camera body smaller.
第１図は本発明に係る一実施例の球面シャッタの閉じ状
態の要部斜視図、第２図は同じく開放絞り状態の要部斜
視図、第３図はそのシャッタ駆動部の概略平面図、第４
図は同じくその要部斜視図、第５図は同じくその要部側
面図、第６図はその球示し、第７図は本発明の他の実施
例の球面シャッタの要部分解斜視図、第８図はその開放
絞り状態の１面図、第９図はその要部所面図、第１０図
は従来例の平面シャッタの閉じ状態の概略斜視図、第１
１図は同じく開放絞り状態の概略斜視図である。
１１．１２．２１．２２・・・球面状のシャッタ羽根、
１１ｂ、１２ｂ・・・長穴、２１ｃ、２２ｃ・・・弧状
穴、１３．１４・・・回転軸、１５．２５・・・駆動ビ
ン、１６．２６・・・アーム、１７．３３・・・ヨーク
、１８．３２・・・永久磁石、１９．３４・・・フォト
カプラー、２３・・・シャツタ枠、２４ａ、２４ｂ・・
・ビン、２９・・・支持部材、３１・・・スリット板。
第１図
第２図
はトー餓軸
第６図
（ａ）
（し）
第３図
第４図
第
図
１５−・即動ビン
１７−ヨーク
１８− 永久≧石
１９− フォトカブつ−
図
第９図
第７図
Ｂトーン−１，夕羽衆
２２創−ピン
２５−駆動ごン
２６−了−ム
第１０FIG. 1 is a perspective view of the main parts of a spherical shutter according to an embodiment of the present invention in the closed state, FIG. 2 is a perspective view of the main parts in the open aperture state, and FIG. 3 is a schematic plan view of the shutter drive section. Fourth
5 is a side view of the main part, FIG. 6 shows the sphere, and FIG. 7 is an exploded perspective view of the main part of a spherical shutter according to another embodiment of the present invention. Fig. 8 is a front view of the shutter in its open aperture state, Fig. 9 is a plan view of its main parts, Fig. 10 is a schematic perspective view of the conventional flat shutter in its closed state, and Fig. 1
FIG. 1 is a schematic perspective view of the lens in the open aperture state. 11.12.21.22... Spherical shutter blade,
11b, 12b... Long hole, 21c, 22c... Arc-shaped hole, 13.14... Rotating shaft, 15.25... Drive bin, 16.26... Arm, 17.33... Yoke, 18.32...Permanent magnet, 19.34...Photocoupler, 23...Shutter frame, 24a, 24b...
- Bottle, 29... Supporting member, 31... Slit plate. Fig. 1 Fig. 2 is the star axis Fig. 6 (a) (shi) Fig. 3 Fig. 4 Fig. 15 - Immediate action bottle 17 - Yoke 18 - Permanent ≧ stone 19 - Photo turn - Fig. 9 Figure 7 B tone-1, Yuba-shu 22-pin 25-drive gun 26-end-m 10th
Claims (1)
枚のシャッタ羽根と該シャッタ羽根が該球面中心を向い
た回動中心軸とを有し、該シャッタ羽根がその開閉動作
時に該球面状空間に沿って移動するように構成されたこ
とを特徴とする球面シャッタ。1 Located in a spherical space, the shutter blade has a plurality of shutter blades formed in the spherical shape and a rotation center axis of the shutter blade facing the center of the spherical surface, and the shutter blade rotates in the direction of rotation during opening and closing operations. A spherical shutter characterized by being configured to move along a spherical space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30692688A JPH02153334A (en) | 1988-12-06 | 1988-12-06 | Spherical surface shutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30692688A JPH02153334A (en) | 1988-12-06 | 1988-12-06 | Spherical surface shutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02153334A true JPH02153334A (en) | 1990-06-13 |
Family
ID=17962939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30692688A Pending JPH02153334A (en) | 1988-12-06 | 1988-12-06 | Spherical surface shutter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02153334A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007500869A (en) * | 2003-08-01 | 2007-01-18 | カール・ツァイス・エスエムティー・アーゲー | Optical imaging device with at least one system aperture |
| WO2013005439A1 (en) | 2011-07-07 | 2013-01-10 | キヤノン電子株式会社 | Light quantity adjustment device and optical apparatus |
| WO2013005436A1 (en) * | 2011-07-07 | 2013-01-10 | キヤノン電子株式会社 | Light quantity adjustment device and optical apparatus |
| JP2014013365A (en) * | 2012-06-06 | 2014-01-23 | Canon Electronics Inc | A light volume adjuster and an optical instrument using the same |
| US20150086190A1 (en) * | 2012-06-06 | 2015-03-26 | Canon Denshi Kabushiki Kaisha | Light-quantity control apparatus and optical apparatus |
| US9500934B2 (en) | 2013-10-04 | 2016-11-22 | Canon Kabushiki Kaisha | Light quantity control apparatus, optical apparatus and image pickup apparatus |
-
1988
- 1988-12-06 JP JP30692688A patent/JPH02153334A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007500869A (en) * | 2003-08-01 | 2007-01-18 | カール・ツァイス・エスエムティー・アーゲー | Optical imaging device with at least one system aperture |
| US8009343B2 (en) | 2003-08-01 | 2011-08-30 | Carl Zeiss Smt Gmbh | Optical imaging device having at least one system diaphragm |
| JP2012014180A (en) * | 2003-08-01 | 2012-01-19 | Carl Zeiss Smt Gmbh | Optical imaging device with system diaphragm |
| CN103649829A (en) * | 2011-07-07 | 2014-03-19 | 佳能电子株式会社 | Light quantity adjustment device and optical apparatus |
| WO2013005436A1 (en) * | 2011-07-07 | 2013-01-10 | キヤノン電子株式会社 | Light quantity adjustment device and optical apparatus |
| WO2013005439A1 (en) | 2011-07-07 | 2013-01-10 | キヤノン電子株式会社 | Light quantity adjustment device and optical apparatus |
| US8783977B2 (en) | 2011-07-07 | 2014-07-22 | Canon Denshi Kabushiki Kaisha | Light-quantity control apparatus and optical apparatus |
| JPWO2013005436A1 (en) * | 2011-07-07 | 2015-02-23 | キヤノン電子株式会社 | Light amount adjusting device and optical apparatus |
| JPWO2013005439A1 (en) * | 2011-07-07 | 2015-02-23 | キヤノン電子株式会社 | Light amount adjusting device and optical apparatus |
| US9715104B2 (en) | 2011-07-07 | 2017-07-25 | Canon Denshi Kabushiki Kaisha | Light-quantity control apparatus and optical apparatus |
| JP2014013365A (en) * | 2012-06-06 | 2014-01-23 | Canon Electronics Inc | A light volume adjuster and an optical instrument using the same |
| US20150086190A1 (en) * | 2012-06-06 | 2015-03-26 | Canon Denshi Kabushiki Kaisha | Light-quantity control apparatus and optical apparatus |
| US9500934B2 (en) | 2013-10-04 | 2016-11-22 | Canon Kabushiki Kaisha | Light quantity control apparatus, optical apparatus and image pickup apparatus |
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