JPS59111609A - Lens barrel - Google Patents
Lens barrelInfo
- Publication number
- JPS59111609A JPS59111609A JP57221360A JP22136082A JPS59111609A JP S59111609 A JPS59111609 A JP S59111609A JP 57221360 A JP57221360 A JP 57221360A JP 22136082 A JP22136082 A JP 22136082A JP S59111609 A JPS59111609 A JP S59111609A
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- lens
- ultrasonic motor
- ring
- vibrating piece
- 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
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lens Barrels (AREA)
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、モーターを内蔵した撮影用のレンズ鏡筒に関
する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a photographic lens barrel with a built-in motor.
撮影用レンズの声点整合、画角や紋りの制御、もしくけ
レンズシャッターカメラの電磁駆動シャッター等、各種
の目的で、レンズ鏡筒にモーターが内蔵されてきている
。Motors have been built into lens barrels for a variety of purposes, such as aligning the focal point of photographic lenses, controlling the angle of view and fringing, and electromagnetically driven shutters for mock-up lens shutter cameras.
ところが、こわらのモーターはいずれも電磁力を利用し
ているため、形状や材料に対する制約が太きく、また、
構造的にも巻き紳や、小型で高出力を得るためには、希
土類の永久磁石を用いる等、コスト的にも限界を有して
いた。However, since all Kowara motors use electromagnetic force, there are severe restrictions on shape and materials.
There were limitations in terms of cost as well, such as the need to use rare earth permanent magnets in order to achieve high output with a compact structure.
この様か状況に対し、従来より電磁式のモーターに代わ
るべくアクチュエーターの開発が行なわれ、その1−7
として、超音波を第11用したモーターが考えられてい
る。どの超音波を第11用したモーターは、大きさ、形
状、効率、コスト等において、従来のモーターに比べ著
しく有利とされ、その基本的々研究報告としては、19
73/FEに米IBM社より(I BM Techni
cal DisclosureBulletin vo
l 16.A7 )、i7’r1976年にはソ連より
(Bulletin of Kiev Po1ytec
hni−cal In5titute 5eriea
”Radio Electronics”vol 13
)それぞれ発表されており、1980年代に入ると、
日本においてもその本格的ガ試作例が発表されている(
日経メカニカル 19B1.5゜25)。そしてこの超
音波を利用したモーター(以後、超音波モーターと呼ぶ
)の試作例としては、圧電体により振動片を超音波振動
させてローターを駆動せしめる振動片型や、弾性体表面
に超音波を与えて表面波(Rayleigh波)を発生
させて圧接された動体を駆動せしめる表面波型等が考案
されている。In response to this situation, actuators have been developed to replace conventional electromagnetic motors.
A motor using ultrasonic waves is being considered as a motor. Motors that use ultrasonic waves are said to be significantly more advantageous than conventional motors in terms of size, shape, efficiency, cost, etc., and the basic research report is as follows:
73/FE from IBM (IBM Techni.
cal Disclosure Bulletin vo
l 16. A7), i7'r from the Soviet Union in 1976 (Bulletin of Kiev Polytec
hni-cal In5 position 5 area
"Radio Electronics"vol 13
), and in the 1980s,
In Japan, a full-scale prototype model has also been announced (
Nikkei Mechanical 19B1.5°25). Prototype examples of motors that utilize ultrasonic waves (hereinafter referred to as ultrasonic motors) include a vibrating piece type that uses a piezoelectric body to vibrate a vibrating piece ultrasonically to drive a rotor, and a vibrating piece type that drives a rotor by ultrasonically vibrating a vibrating piece using a piezoelectric body, and a vibrating piece type that drives a rotor by ultrasonic vibration of a vibrating piece using a piezoelectric body, and a vibrating piece type that drives a rotor by ultrasonically vibrating a vibrating piece using a piezoelectric body. A surface wave type and the like have been devised, which generate a surface wave (Rayleigh wave) and drive a moving body pressed against it.
特に、後者の表面波型の超音波モーターに関しては、表
面波の発生方法として1964年にベル研究所のSit
tigにより、すだね状電極が考案されて以来、電気エ
ネルギと超音波振動エネルギ(表面波)との高効率な相
互交換が容易に実現可能にされているうえ、正転、逆転
も電源の位相を変える事により切換えられ、表面波を利
用しているため低回転、高トルクが出力できるという利
点を有している。In particular, regarding the latter surface wave type ultrasonic motor, in 1964 Bell Laboratories Sit was developed as a method for generating surface waves.
Since the invention of the slat-shaped electrode by TIG, it has become easy to realize highly efficient mutual exchange between electrical energy and ultrasonic vibration energy (surface waves). Since it is switched by changing the phase and uses surface waves, it has the advantage of being able to output low rotation and high torque.
本発明は、撮影用レンズの焦点整合、ズーミング、紋り
、及びシャッター等の制御部側の駆動源として超音波モ
ーターを用いる事により、スペース、部品点数、コスト
等の面において、従来に比べ著しく優れた撮影用レンズ
を提供する事を目的とする。The present invention uses an ultrasonic motor as a driving source for the control unit for focusing, zooming, fringing, and shutter of photographic lenses, thereby significantly reducing space, number of parts, cost, etc. compared to conventional methods. Our aim is to provide excellent photography lenses.
第1図は、伸点整合用レンズを駆動させるだめのモータ
ーを有する、従来の自動合焦用レンズ鏡筒の例である。FIG. 1 is an example of a conventional automatic focusing lens barrel having a motor for driving an elongated point alignment lens.
図において、電磁力を第11用して回転するモーター1
の駆動力が歯車列2を介して内筒3に切られた歯車3a
に伝わり、内筒3に固定された焦点整合用レンズ4を駆
動させる。この様に、従来型の電磁力を利用したモータ
ーを用いると、高回転低トルクを低回転高トルクに変換
する減速用の歯車列を必要とし、部品点数の増加、及び
こねによるコストアップ、又、縮み込みスペースの確保
のためケーシング50大きさも、大きくならざるをえな
くなる。In the figure, a motor 1 rotates using electromagnetic force 11.
A gear 3a whose driving force is applied to the inner cylinder 3 via the gear train 2
and drives the focusing lens 4 fixed to the inner cylinder 3. In this way, when a conventional motor using electromagnetic force is used, a gear train for reduction is required to convert high rotation and low torque to low rotation and high torque, which increases the number of parts and costs due to kneading. , the size of the casing 50 has to be increased in order to secure the shrinkage space.
ここで、本発明の詳細な説明に移る前に、超音波モータ
ーの原理と、すでに提案されているその実施例について
触れておく。Before proceeding to a detailed explanation of the present invention, the principle of the ultrasonic motor and the embodiments thereof that have already been proposed will be mentioned.
第2図は振動片型の超音波モーターの原理図であって、
振動子6に振動片7が取り付けられており、不図示の調
圧装置等を用いて、動体8を振動片7にθの角度をもっ
て適当な力で押し付け々から、振動子6に高周波電圧を
印加してこれを振動片7の固有振動数付近で振動子6の
軸方向に振動させると、振動片7の先端部7aは振動片
7の軸方向と直角な方向に振動し、その端部7aは第2
図の粗面上において楕円運動の軌道を描き、動体(3)
8の摺動面8aに対し、接触と離脱を繰り返すため、動
体8は矢印Aの方向に移動する。FIG. 2 is a principle diagram of a vibrating piece type ultrasonic motor,
A vibrating piece 7 is attached to the vibrator 6, and a high-frequency voltage is applied to the vibrating element 6 by pressing the moving body 8 against the vibrating piece 7 with an appropriate force at an angle of θ using a pressure regulating device (not shown) or the like. When this is applied and the vibration is caused to vibrate in the axial direction of the vibrator 6 near the natural frequency of the vibrating piece 7, the tip 7a of the vibrating piece 7 vibrates in a direction perpendicular to the axial direction of the vibrating piece 7, and the end portion 7a is the second
The moving object (3) 8 moves in the direction of the arrow A because it draws an elliptical trajectory on the rough surface shown in the figure and repeatedly comes into contact with and leaves the sliding surface 8a of the moving object (3) 8.
p41.3図は、振動片型の超音波モーターを円環状に
作成し六場合の実施例で、円環状の振動子6bに振動片
7bが複数個(1個でもさしつかえない)取り付けらね
ていて、その先端部は、ローター(動体)8bK′w触
している。The figure on page 41.3 shows an example in which a vibrating piece type ultrasonic motor is made in an annular shape, and a plurality of vibrating pieces 7b (even one is fine) are attached to the annular vibrator 6b. Its tip is touching the rotor (moving body) 8bK'w.
第4図は、表面波型の超音波モーターの原理図であって
、弾性体9の表面に電歪素子を甲いて振動を与えると、
表面波が生じて、弾性体表面を伝搬してゆく。い捷、こ
の表面波の進行方向を、矢印Bの方向とすると、弾性体
9の表面付近の質点の運動は反時岨回りに、矢印Bと反
対の方向に回転しているため、動体10を加圧接触させ
ると、動体10は矢印Cの方向に移動する。FIG. 4 is a diagram showing the principle of a surface wave type ultrasonic motor, and when an electrostrictive element is placed on the surface of the elastic body 9 and vibration is applied,
A surface wave is generated and propagates on the surface of the elastic body. However, if the traveling direction of this surface wave is the direction of arrow B, the motion of the mass point near the surface of the elastic body 9 is rotating around the counterclockwise direction in the opposite direction to arrow B, so that the moving body 10 When the moving object 10 is pressed into contact with the moving body 10, the moving body 10 moves in the direction of the arrow C.
第5図は、表面波型の超音波モーターを円環状に作成し
た場合の実施例で、弾性リング(弾性体)9bにセラミ
ック等のリング状電歪素子11を用いて振動を与えて表
面波を発生させ、これを利用してローター(動体)10
bを回転させる。なお、(4)
表面波の発生方法と1.てけ、電歪素子11の表面にす
だれ状官給を形成し、各電接に位相のずれた高周波電圧
を加える事により、1方向の進行波を発生させる事がで
きる。寸だ、位相を逆にする事により、ローター10b
の回転方向を逆転させる事も可能である。FIG. 5 shows an example in which a surface wave type ultrasonic motor is created in an annular shape. is generated and using this, the rotor (moving body) 10
Rotate b. In addition, (4) How to generate surface waves and 1. A unidirectional traveling wave can be generated by forming a blind-like structure on the surface of the electrostrictive element 11 and applying phase-shifted high-frequency voltages to each electrical connection. By reversing the phase, rotor 10b
It is also possible to reverse the direction of rotation.
第6図は、表面波型の超音波モーターをレンズ錠筒12
に糾み込んで、焦点整合用レンズ13、及び紋り羽根1
4を駆動制御しうる様にした場合の実施例である。図に
おいて、弾性リング15にけ、電極の取り付けられた電
歪素子16が付けられていて、こねにより発生する表面
波がローター17を回転させる。ローター17にはキー
溝17aが切られていて、これに係合するピン18を介
してレンズ13を保持している内筒19を回転させる。Figure 6 shows how a surface wave type ultrasonic motor is connected to the lens lock cylinder 12.
Incorporating a focusing lens 13 and a crest blade 1
This is an example in which the drive control of 4 is possible. In the figure, an electrostrictive element 16 to which electrodes are attached is attached to an elastic ring 15, and surface waves generated by kneading rotate a rotor 17. A key groove 17a is cut in the rotor 17, and an inner cylinder 19 holding the lens 13 is rotated via a pin 18 that engages with the key groove 17a.
内筒19は、鋼部12aとヘリコイドネジでかみ合って
いて、内筒19は、回転しながら、光軸方向に移動する
ことができる。20は弾性リング15とローター17と
の接触圧を調整するための調圧装置であり、・2・1は
弾性リング15の支特休である。紋り関係の制御方法に
ついても同様に、電極付きの電歪素子22が弾性リング
23に付けらtており、調圧装置26により、ローター
24が弾性リング23に加圧接触している。ローター2
4の回転はビン25により、紋り系27に伝達され、公
知の機構により、紋り羽根14が駆動される。The inner cylinder 19 is engaged with the steel part 12a by a helicoid screw, and the inner cylinder 19 can move in the optical axis direction while rotating. 20 is a pressure regulating device for adjusting the contact pressure between the elastic ring 15 and the rotor 17; .2.1 is a support for the elastic ring 15; Regarding the control method related to frizz, similarly, an electrostrictive element 22 with electrodes is attached to an elastic ring 23, and a rotor 24 is brought into pressure contact with the elastic ring 23 by a pressure regulating device 26. rotor 2
4 is transmitted to the bristle system 27 by the pin 25, and the bristle blades 14 are driven by a known mechanism.
なお、可変焦点レンズ群の駆動機構に超音波モーターを
取付ければ電動ズームとして使えることは云うオでもな
い。It goes without saying that if an ultrasonic motor is attached to the drive mechanism of the variable focus lens group, it can be used as an electric zoom.
もちろん、本発明は表面波型及び振動型のいずれの型式
の超音波モーターを使ってもよい。Of course, the present invention may use either a surface wave type or a vibration type ultrasonic motor.
以上のように本発明によりば、円甲状にモーターを作成
できることから、レンズ鏡筒に組み込む上で、スペース
的に犬きガ利点があるばかりか、滅連用の歯車列を用い
ずに(用いる場合にも従来に比べはるかに少ガい歯車数
で)各制御部材を駆動できるため、部品点数の大幅な削
減が可能とされた。さらに、モーター自体、従来の電磁
型に比べ構造的に簡単になっているため、部品点数の減
少と合わせて、コストダウンも期待できる。As described above, according to the present invention, since the motor can be made in the shape of a circular conch, there is not only an advantage in terms of space when incorporating it into the lens barrel, but also there is no need to use a continuous gear train (if used). Since each control member can be driven with a much smaller number of gears than before, the number of parts can be significantly reduced. Furthermore, the motor itself is structurally simpler than conventional electromagnetic types, so it is expected to reduce costs by reducing the number of parts.
第1図は従来のレンズ鏡筒の断面図、
#2図は振動片型超音波モーターの原理図、第3図は
〃 〃 実施例、第4図は表面波型超音波
モーターの原理図、第5図は 〃 〃
実施例、第6図は表面波型超音波モーターをレンズ鏡
筒に糾み込んだ場合の本発明の実施例である。
出願人 日本光学工業株式会社
代胛人 渡 辺 隆 男
37−
オ′4図
手続補正書(方式)
昭和58年 4月1日
1、事件の表示
昭和57年特許願第221360号
2、発明の名称
レンズ鏡筒
3、補正をする者
(411)日本光学工業株式会社
コアキモト タカチル
取締役桓長小秋元 隆輝
4、代理人
〒140 東京部品用区西大井1丁目6番3号昭和58
年 3月 9日(発送日:昭和58年 3月29日)6
、補正の対象
明細書の1図面の簡単な説明」の欄
7、補正の内容
(1)明細書第8頁第5行目のF////Jを「振動片
型超音波モーターの」に訂正する。
(2)明細書第8頁第7行目の「〃〃」を[表面波型超
音波モーターの」に訂正する。
=39Figure 1 is a cross-sectional view of a conventional lens barrel, Figure #2 is a principle diagram of a vibrating piece type ultrasonic motor, and Figure 3 is a diagram of the principle of a vibrating element type ultrasonic motor.
〃 〃 Example, Figure 4 is a principle diagram of a surface wave type ultrasonic motor, Figure 5 is 〃 〃
Embodiment FIG. 6 shows an embodiment of the present invention in which a surface wave type ultrasonic motor is embedded in a lens barrel. Applicant: Takao Watanabe, representative of Nippon Kogaku Kogyo Co., Ltd. 37-O'4 Procedural amendment (method) April 1, 1981 1, Indication of the case 1988 Patent Application No. 221360 2, Invention Name: Lens barrel 3, Person performing the correction (411) Takachiru Koakimoto, Nippon Kogaku Kogyo Co., Ltd. Director: Takateru Koakimoto, director: 4, agent: 1-6-3 Nishi-Oi, Tokyo Parts Ward, 140, Showa 58
March 9, 2015 (Shipping date: March 29, 1981) 6
, Column 7 of ``Brief explanation of one drawing of the specification subject to amendment'' Contents of amendment (1) Change F////J in line 5 of page 8 of the specification to ``of a vibrating piece type ultrasonic motor'' Correct. (2) "〃〃" on page 8, line 7 of the specification is corrected to "for surface wave type ultrasonic motor." =39
Claims (1)
軸と一致する様に構成し、該超音波モーターにより該撮
影用レンズの制御部材を駆動せしめる様に1=た事を特
徴とするレンズ錠筒。A lens characterized in that a circular thyroid-shaped ultrasonic motor is configured such that its rotation center coincides with the optical axis of a photographic lens, and the ultrasonic motor drives a control member of the photographic lens. Lock barrel.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57221360A JPS59111609A (en) | 1982-12-17 | 1982-12-17 | Lens barrel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57221360A JPS59111609A (en) | 1982-12-17 | 1982-12-17 | Lens barrel |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS59111609A true JPS59111609A (en) | 1984-06-27 |
Family
ID=16765568
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP57221360A Pending JPS59111609A (en) | 1982-12-17 | 1982-12-17 | Lens barrel |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59111609A (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6440927A (en) * | 1987-08-07 | 1989-02-13 | Nec Corp | Polarization controller |
JPH01130121A (en) * | 1987-11-16 | 1989-05-23 | Nec Corp | Polarized light control device |
JPH02807A (en) * | 1988-01-12 | 1990-01-05 | Olympus Optical Co Ltd | Lens barrel |
US5010222A (en) * | 1989-06-08 | 1991-04-23 | Nikon Corporation | Driving device for ultrasonic wave motor |
US5066884A (en) * | 1989-02-10 | 1991-11-19 | Nikon Corporation | Ultrasonic motor having high drive efficiency |
US5159223A (en) * | 1990-03-15 | 1992-10-27 | Nikon Corporation | Driving apparatus for ultrasonic motor |
US5173631A (en) * | 1989-10-30 | 1992-12-22 | Nikon Corporation | Driving device for ultrasonic motor |
US5198935A (en) * | 1989-03-27 | 1993-03-30 | Nikon Corporation | Lens barrel with ultrasonic wave motor |
US5625263A (en) * | 1989-06-15 | 1997-04-29 | Nikon Corporation | Driving device for ultrasonic wave motor |
US5744897A (en) * | 1988-10-19 | 1998-04-28 | Nikon Corporation | Driving control device for vibration wave motor |
JP2009102080A (en) * | 2009-02-13 | 2009-05-14 | Gifu Plast Ind Co Ltd | Foldable carrying container |
-
1982
- 1982-12-17 JP JP57221360A patent/JPS59111609A/en active Pending
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6440927A (en) * | 1987-08-07 | 1989-02-13 | Nec Corp | Polarization controller |
JPH01130121A (en) * | 1987-11-16 | 1989-05-23 | Nec Corp | Polarized light control device |
JPH02807A (en) * | 1988-01-12 | 1990-01-05 | Olympus Optical Co Ltd | Lens barrel |
US5744897A (en) * | 1988-10-19 | 1998-04-28 | Nikon Corporation | Driving control device for vibration wave motor |
US5066884A (en) * | 1989-02-10 | 1991-11-19 | Nikon Corporation | Ultrasonic motor having high drive efficiency |
US5990597A (en) * | 1989-02-10 | 1999-11-23 | Nikon Corporation | Ultrasonic motor having high drive efficiency |
US5198935A (en) * | 1989-03-27 | 1993-03-30 | Nikon Corporation | Lens barrel with ultrasonic wave motor |
US5010222A (en) * | 1989-06-08 | 1991-04-23 | Nikon Corporation | Driving device for ultrasonic wave motor |
US5625263A (en) * | 1989-06-15 | 1997-04-29 | Nikon Corporation | Driving device for ultrasonic wave motor |
US5173631A (en) * | 1989-10-30 | 1992-12-22 | Nikon Corporation | Driving device for ultrasonic motor |
US5159223A (en) * | 1990-03-15 | 1992-10-27 | Nikon Corporation | Driving apparatus for ultrasonic motor |
JP2009102080A (en) * | 2009-02-13 | 2009-05-14 | Gifu Plast Ind Co Ltd | Foldable carrying container |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8274198B2 (en) | Ultrasonic motor and conveying apparatus having the same | |
JPS59111609A (en) | Lens barrel | |
JPS59101608A (en) | Lens driving device using oscillatory wave motor | |
JPH11235062A (en) | Vibration actuator driver and lens barrel | |
JPH04145881A (en) | Ultrasonic motor | |
JP4896020B2 (en) | Mechanism including ultrasonic lead screw motor | |
US20100127598A1 (en) | Miniature piezoelectric motors for ultra high-precision stepping | |
JPS59110388A (en) | Vibration wave motor | |
JPS5996882A (en) | Vibration wave motor | |
JPS5986484A (en) | Supersonic motor | |
JP4767726B2 (en) | Ultrasonic actuator | |
JP2007271990A (en) | Lens drive device | |
JPH04163413A (en) | Rotating cylinder driving device of photographing lens barrel | |
JP2006101593A (en) | Reciprocating drive mechanism and optical device using the same | |
JPS59107309A (en) | Lens driving device using oscillatory wave motor | |
JPH112752A (en) | Vibration actuator driving device and lens barrel | |
JP4565850B2 (en) | Ultrasonic motor and lens device | |
JPH0993962A (en) | Oscillatory actuator | |
JPH02311184A (en) | Ultrasonic motor | |
JP4078466B2 (en) | Vibration actuator driving device and lens barrel | |
JP2002303775A (en) | Lens driving device for camera | |
JPH06261559A (en) | Rotary actuator | |
JPH05111268A (en) | Piezoelectric actuator | |
JP5447375B2 (en) | Vibration actuator, lens unit, and imaging device | |
JP2675884B2 (en) | Vibration wave device |