JPS6015245B2 - Turret type magnification device in lens system - Google Patents
Turret type magnification device in lens systemInfo
- Publication number
- JPS6015245B2 JPS6015245B2 JP11320979A JP11320979A JPS6015245B2 JP S6015245 B2 JPS6015245 B2 JP S6015245B2 JP 11320979 A JP11320979 A JP 11320979A JP 11320979 A JP11320979 A JP 11320979A JP S6015245 B2 JPS6015245 B2 JP S6015245B2
- Authority
- JP
- Japan
- Prior art keywords
- turret
- plate
- lens
- magnification device
- turret plate
- 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
Links
- 238000001514 detection method Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000029052 metamorphosis Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Lens Barrels (AREA)
- Structure And Mechanism Of Cameras (AREA)
Description
【発明の詳細な説明】
本発明は、レンズ系におけるターレット式変倍装置、殊
に篤ｖ点距離の異る複数のレンズを有するターレットを
所定信号によって回転させ電気的に位置検出をして、そ
のレンズの所望の一つを正確に光学系の光路上に位置出
しするようにした変倍装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a turret type variable magnification device in a lens system, in particular, a turret having a plurality of lenses having different point distances, is rotated by a predetermined signal, and the position is detected electrically. The present invention relates to a variable magnification device that accurately positions a desired one of the lenses on the optical path of an optical system.
ターレット式の変倍装置においては、変倍しンズの停止
位置の正確な制御のために、サーボモーター又はパルス
モーターを使用する電気的な制御方式と、光電装直によ
りターレット位置を検出し、ターレットが所定位置まで
回転したときに駆動用電動機の回転を停止し、ターレッ
ト外周に設けたＶ溝に係止しバ一を落し込んでターレッ
トを所定位置に係止する機械的な方式とが知られている
。In a turret-type magnification device, in order to accurately control the stop position of the magnification lens, an electric control method using a servo motor or pulse motor and a direct photoelectric device detect the turret position. A mechanical method is known in which the drive motor stops rotating when the turret rotates to a predetermined position, and the turret is locked in a V-groove provided on the outer periphery of the turret, and a bar is dropped into the turret to lock the turret in a predetermined position. ing.
しかし、電気的な制御方式は高価であり、かつターレッ
トの慣性のために、モーター自体による精密な位置出し
‘ま困難である。機械的な制御方式は、一般にターレッ
トと一体に設けたスリット板の所定位置に、スリットを
形成しておき、このスリットが定められた位置に釆たこ
とを光電的に検出して電動機を停止させ、同時に係止し
バーをターレツト外周のＶ溝に落し込むものであるが、
この方式でもターレットの慣性のため、該ターレツトを
望む位置に正確かつ確実に停止させることは困難である
。特に、変情時間を短縮するため、ターレットの回転速
度を高めると、その困難さは一層増大する。ターレツト
を停止させるために、機械的又は電気的ブレーキ装置を
設けても、ブレーキ作動のタイミング及び力量、或いは
摩擦係数のバラッキのため、レンズを定位層に停止させ
ることは困難である。本発明は、従来のターレット式変
情装置の上述の問題を解消することを目的とするもので
、その特徴とするところは、前記ターレット板とは別体
に構成され該ターレット板と同軸に配遣された回転自在
な駆動板が設けられ、前記ターレット板に前記各レンズ
対応する位置に複数の係止部が形成され、変倍装置の静
止部には前記係止部の一つに係合する係止部材が設けら
れ、前記係止部と前記係止部材とは、該係止部に対応す
るレンズが所定位置にあるとき互いに係合できるような
位置関係に配置され、また前記駆動板にはこれを回転駆
動するための電動機が組合わされ、かつ前記ターレット
板と前記駆動板のいずれか一方には連動ピンが取付けら
れ、他方には該運動ピンと係合するための回転方向に前
記連動ピンの径より大きい幅をもつ切欠きが形成されて
空動き結合部を形成し、前記夕−レット板と前記駆動板
の一方には、前記各レンズに対応する位置指標が、さら
に変倍装置の静止部には前記位置指標を検出する検出部
が設けられ、前記位置指標は譲位層指標に対応するレン
ズが前記所定位置直前に達したとき前記検出部により検
出されるようにしたものである。However, electrical control methods are expensive, and the inertia of the turret makes it difficult to perform precise positioning using the motor itself. Mechanical control methods generally involve forming slits at predetermined positions on a slit plate that is integrated with the turret, and photoelectrically detecting that the slits are in the predetermined positions to stop the motor. At the same time, the locking bar is dropped into the V groove on the outer periphery of the turret.
Even with this method, it is difficult to accurately and reliably stop the turret at a desired position due to the inertia of the turret. In particular, if the rotational speed of the turret is increased in order to shorten the transformation time, the difficulty will further increase. Even if a mechanical or electric brake device is provided to stop the turret, it is difficult to stop the lens on the stereotaxic layer due to variations in the timing and force of brake operation or the coefficient of friction. The present invention aims to solve the above-mentioned problems of the conventional turret type metamorphosis device, and is characterized by being constructed separately from the turret plate and disposed coaxially with the turret plate. A rotatable driving plate is provided, a plurality of locking portions are formed on the turret plate at positions corresponding to the respective lenses, and a stationary portion of the variable magnification device is engaged with one of the locking portions. a locking member is provided, the locking portion and the locking member are arranged in a positional relationship such that they can engage with each other when the lens corresponding to the locking portion is in a predetermined position, and the driving plate is combined with an electric motor for rotationally driving the turret plate, and an interlocking pin is attached to one of the turret plate and the driving plate, and the interlocking pin is attached to the other in the rotational direction to engage with the movement pin. A notch having a width larger than the diameter of the pin is formed to form a lost movement joint, and one of the lens plate and the driving plate has a position indicator corresponding to each lens, and further includes a variable magnification device. A detection unit for detecting the position index is provided in the stationary part of the apparatus, and the position index is detected by the detection unit when the lens corresponding to the yielding layer index reaches just before the predetermined position. .
したがって、検出部が位置指標を検出すると、電動機へ
電力供給が断たれ、駆動板は停止するが、ターレット板
は空動き結合の遊びのために、その慣性で回転を続け、
その間に係止部材がターレツト板のＶ溝のような係止部
に落ち込んで、該ターレット板を定位層に停止させる。
このように、本発明によれば、ターレツト板の係止部と
係止用部材との確実な係合が保証され、安価な手段で、
レンズの定位での停止が可能になる。以下、本発明の実
施例を図について説明すると、中心軸まわりに回転自在
に配置されたターレット板２上には、拡大倍率の異るレ
ンズｌａ，ｌｂ，ｌｃが取付けられており、該ターレツ
ト板２と同軸に、該ターレツト板２とは別体に形成した
駆動板３が配置される。Therefore, when the detection unit detects the position index, the power supply to the motor is cut off and the drive plate stops, but the turret plate continues to rotate due to its inertia due to the play of the idle coupling.
During this time, the locking member falls into a locking portion, such as a V-groove, in the turret plate to stop the turret plate in the stereotaxic layer.
As described above, according to the present invention, reliable engagement between the locking portion of the turret plate and the locking member is ensured, and by inexpensive means,
It becomes possible to stop the lens in its normal position. Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Lenses la, lb, and lc with different magnifications are mounted on a turret plate 2 that is rotatably arranged around a central axis. A drive plate 3 formed separately from the turret plate 2 is disposed coaxially with the turret plate 2.
該駆動板３の外周には歯車４が形成されており、この歯
車４に駆動用電動機５のピニオン６が噛合う。駆動板３
には、適当な周方向の長さを有する切欠き７が形成され
、この切欠き７にターレツト板２上の連動ピン８が係合
して、ターレット板２と駆動板３との間の空動き連結部
を形成する。駆動板３の外周には、レンズｌａ，ｌｂ，
ｌｃに対応する適当な位置に位置指標としてスリット９
が形成され、変倍機械の固定部にはこのスリット位置を
検出するためのフオトセンサー１０が設けられている。
フオトセンサー１０は各スリット９に対応するレンズが
所定位置に達する直前に該スリット９を検出するように
位置決めされる。ターレツト板２の外周には、レンズｌ
ａ，ｌｂ，ｌｃの各々に対応するＶ簿１１が形成され、
このＶ溝１１に係合する係止部材１２が、ターレツト板
２方向のバネ習性を与えて配置される。係止部材１２は
、ターレツト板２上のＶ溝１ １に係合して該ターレッ
ト板２を停止させたとき、該Ｖ溝１ １に対応するレン
ズが安位置に正確に位層決めされるように配置される。
今〜変倍の信号によって電動機５が回転すると、駆動板
３が回転駆動され、その回転は空動き連結を介してター
レツト板２に伝えられる。A gear 4 is formed on the outer periphery of the drive plate 3, and a pinion 6 of a drive motor 5 meshes with this gear 4. Drive plate 3
A notch 7 having an appropriate length in the circumferential direction is formed in the turret plate 2, and the interlocking pin 8 on the turret plate 2 engages with this notch 7, thereby filling the space between the turret plate 2 and the drive plate 3. Form a motion connection. Lenses la, lb,
A slit 9 is placed as a position indicator at an appropriate position corresponding to lc.
is formed, and a photo sensor 10 for detecting the position of this slit is provided in a fixed part of the variable magnification machine.
The photo sensor 10 is positioned so as to detect each slit 9 immediately before the lens corresponding to the slit 9 reaches a predetermined position. A lens l is placed on the outer periphery of the turret plate 2.
A V book 11 corresponding to each of a, lb, and lc is formed,
A locking member 12 that engages with this V-groove 11 is arranged to provide a spring behavior in the turret plate 2 direction. When the locking member 12 engages with the V-groove 11 on the turret plate 2 to stop the turret plate 2, the lens corresponding to the V-groove 11 is accurately positioned at the safe position. It is arranged like this.
When the electric motor 5 rotates in response to the magnification change signal, the drive plate 3 is driven to rotate, and the rotation is transmitted to the turret plate 2 via the idle motion connection.
フオトセンサー１０が所定のスリット９を検出すると、
電動機５への電力供Ｖ給が断たれ、電動機５及び駆動板
３は停止するが、夕−レット板２は空動き結合の遊びの
範囲内で、自身の慣性により回転を続け、その間に、係
止部材１２がＶ溝１１に係合して、ターレツト板２を所
定位置に正確に停止させる。ターレット板２は駆動板３
と別体であるため、その慣性は比較的小さく、係止部材
１２とＶ溝１１との係合により確実にこれを停止させる
ことができる。When the photo sensor 10 detects a predetermined slit 9,
The electric power supply V to the electric motor 5 is cut off, and the electric motor 5 and the drive plate 3 stop, but the electric motor plate 2 continues to rotate due to its own inertia within the play of the idle movement coupling, and during this time, The locking member 12 engages the V-groove 11 to accurately stop the turret plate 2 in a predetermined position. Turret plate 2 is drive plate 3
Since it is a separate body, its inertia is relatively small, and the engagement between the locking member 12 and the V-groove 11 can reliably stop it.
図面は本発明の−実施例を示す変情装置の斜視図である
。
ｌａ，ｌｂ，ｌｃ……レンズ、２……ターレツト板、３
・・…・駆動板、５・・・・・・電動機、７・・・・・
・切欠き、８・・・・・・運動ピン、９・・・・・・ス
リット、１０・・…・フオトセンサー、１１…・・・Ｖ
溝、１２・・・・・・係止部材。The drawing is a perspective view of a metamorphosis device showing an embodiment of the present invention. la, lb, lc...lens, 2...turret plate, 3
......Drive plate, 5...Electric motor, 7...
・Notch, 8...Movement pin, 9...Slit, 10...Photo sensor, 11...V
Groove, 12...Locking member.
Claims (1)
レツト板を有するターレツト式変倍装置において、前記
ターレツト板とは別体に構成され該ターレツト板と同軸
に配置された回転自在な駆動板が設けられ、前記ターレ
ツト板には前記各レンズ対応する位置に複数の係止部が
形成され、変倍装置の静止部には前記係止部の一つに係
合する係止部材が設けられ、前記係止部と前記係止部材
とは、該係止部に対応するレンズが所定位置にあるとき
互いに係合できるような位置関係に配置され、また前記
駆動板にはこれを回転駆動するための電動機が組合わさ
れ、かつ前記ターレツト板と前記駆動板のいずれか一方
には連動ピンが取付けられ、他方には該連動ピンと係合
するための回転方向に前記連動ピンの径より大きい幅を
もつ切欠きが形成されて空動き結合部を形成し、前記タ
ーレツト板と前記駆動板の一方には、前記各レンズに対
応する位置指標が、さらに変倍装置の静止部には前記位
置指標を検出する検出部が設けられ、前記位置指標は該
位置指標に対応するレンズが前記所定位置直前に達した
とき前記検出部により検出されるように位置決めされた
ことを特徴とするレンズ系におけるターレツト板式変倍
装置。 ２ 位置指標は駆動板に形成されたスリツトからなり、
検出部は該スリツトを検出するフオトセンサーからなる
ことを特徴とする特許請求の範囲第１項記載のレンズ系
におけるターレツト式変倍装置。[Scope of Claims] 1. A turret-type magnification device having a rotatable turret plate supporting a plurality of lenses with different magnifications, which is constructed separately from the turret plate and arranged coaxially with the turret plate. A rotatable drive plate is provided, a plurality of locking portions are formed on the turret plate at positions corresponding to the lenses, and a stationary portion of the variable magnification device is provided with a locking portion that engages with one of the locking portions. A locking member is provided, and the locking portion and the locking member are arranged in a positional relationship such that they can engage with each other when the lens corresponding to the locking portion is in a predetermined position, and the drive plate includes a locking member. An electric motor for rotationally driving this is combined, and an interlocking pin is attached to one of the turret plate and the driving plate, and the interlocking pin is attached to the other in a rotational direction for engaging with the interlocking pin. A cutout having a width larger than the diameter is formed to form a lost movement joint, and a position indicator corresponding to each lens is provided on one of the turret plate and the drive plate, and a position indicator is further provided on the stationary part of the variable magnification device. is characterized in that a detection unit for detecting the position index is provided, and the position index is positioned such that it is detected by the detection unit when the lens corresponding to the position index reaches just before the predetermined position. A turret plate type variable magnification device in a lens system. 2. The position indicator consists of a slit formed in the drive plate,
A turret type magnification changer in a lens system according to claim 1, wherein the detection section comprises a photo sensor for detecting the slit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11320979A JPS6015245B2 (en) | 1979-09-04 | 1979-09-04 | Turret type magnification device in lens system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11320979A JPS6015245B2 (en) | 1979-09-04 | 1979-09-04 | Turret type magnification device in lens system |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15237284A Division JPS6045214A (en) | 1984-07-23 | 1984-07-23 | Turret type variable magnification device in lens system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5636614A JPS5636614A (en) | 1981-04-09 |
| JPS6015245B2 true JPS6015245B2 (en) | 1985-04-18 |
Family
ID=14606317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11320979A Expired JPS6015245B2 (en) | 1979-09-04 | 1979-09-04 | Turret type magnification device in lens system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6015245B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5869813U (en) * | 1981-11-02 | 1983-05-12 | オリンパス光学工業株式会社 | Turret type lens variable magnification device |
| US4544236A (en) * | 1981-11-02 | 1985-10-01 | Olympus Optical Co., Ltd. | Turret |
| JPS5895306A (en) * | 1981-12-01 | 1983-06-06 | Matsushita Electric Ind Co Ltd | Optical filter remote switching device |
| JPH0968656A (en) * | 1995-06-23 | 1997-03-11 | Olympus Optical Co Ltd | Optical path switching device for optical microscope |
-
1979
- 1979-09-04 JP JP11320979A patent/JPS6015245B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5636614A (en) | 1981-04-09 |
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