JPS63167337A - Lens driving device - Google Patents

Lens driving device

Info

Publication number
JPS63167337A
JPS63167337A JP31323686A JP31323686A JPS63167337A JP S63167337 A JPS63167337 A JP S63167337A JP 31323686 A JP31323686 A JP 31323686A JP 31323686 A JP31323686 A JP 31323686A JP S63167337 A JPS63167337 A JP S63167337A
Authority
JP
Japan
Prior art keywords
motor
lens system
driving
drive
switch
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.)
Granted
Application number
JP31323686A
Other languages
Japanese (ja)
Other versions
JP2702474B2 (en
Inventor
Daisuke Hata
大介 畑
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
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 by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP61313236A priority Critical patent/JP2702474B2/en
Publication of JPS63167337A publication Critical patent/JPS63167337A/en
Application granted granted Critical
Publication of JP2702474B2 publication Critical patent/JP2702474B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Lens Barrels (AREA)

Abstract

PURPOSE:To prevent the drop of gear efficiency in a driving system or the increment of a gear space and to speed up the movement of a lens system by driving the lens system at low speed within a range capable of stopping a motor for driving the lens system at any position, and in a range having no stopping point, driving the motor at a high speed. CONSTITUTION:The titled lens driver has driving system motor 1 for driving a lens system, a motor driver 2 for driving the motor 1, a detecting means 3, and a control means 4. The detecting means 3 detect that the lens system exists in a stop enabled range capable of stopping it at any point. The control means 4 allows the motor driving device 2 to drive the motor at a low speed in case of movement in the lens system stopping enabled range based on an output signal from the detecting means 3 and to drive the motor at a high speed in case of movement in an area including the range having nostopping point. consequently, the lens system driver prevented from the drop of its gear efficiency or the increment of its gear space and capable of quickly moving the lens system can be obtained.

Description

【発明の詳細な説明】 (技術分野) 本発明はカメラにおけるレンズ駆動装置に関する。[Detailed description of the invention] (Technical field) The present invention relates to a lens driving device in a camera.

(従来技術) 通常、カメラにおいてはズーミングレンズとモータとの
間に介在される駆動系のギヤ比はズーミング速度を遅く
しているために100以上となり、ギヤ効率の低下やギ
ヤスペースの増加が生ずる。
(Prior art) Normally, in a camera, the gear ratio of the drive system interposed between the zooming lens and the motor is 100 or more to slow down the zooming speed, resulting in a decrease in gear efficiency and an increase in gear space. .

またズーミング速度をギヤ比で遅くしているので、ズー
ムレンズをズーム領域から収納位置又はマクロ位置など
の定位置まで移動させる場合その移動時間が長くなる。
Furthermore, since the zooming speed is slowed down by the gear ratio, it takes a long time to move the zoom lens from the zoom area to a fixed position such as the storage position or the macro position.

(目  的) 本発明は上記欠点を除去し、ギヤ効率の低下やギヤスペ
ースの増加を防止できてレンズ系の移動を早くできるレ
ンズ系駆動装置を提供することを目的とする。
(Objective) It is an object of the present invention to provide a lens system drive device that eliminates the above-mentioned drawbacks, prevents a decrease in gear efficiency and an increase in gear space, and allows a lens system to move quickly.

(構  成) 本発明は第1図に示すようにレンズ系を駆動する駆動系
及びモータ1と、このモータを駆動するモータ駆動装置
!!2と、検出手段3と、制御手段4とを有し、検出手
段3はレンズ系がどこでも停止できる停止可能範囲にあ
ることを検出する。そして制御手段4は検出手段3と出
力信号によりレンズ系の停止可能範囲での移動ではモー
タ駆動装置2にモータを低速で駆動させどこにも停止し
ない範囲を含む領域の移動ではモータ駆動装置2にモー
タを高速で駆動させる。
(Structure) As shown in FIG. 1, the present invention includes a drive system and motor 1 that drive a lens system, and a motor drive device that drives this motor! ! 2, a detection means 3, and a control means 4, and the detection means 3 detects that the lens system is within a stopping range where the lens system can be stopped at any point. Then, the control means 4 uses the detection means 3 and the output signal to cause the motor drive device 2 to drive the motor at low speed when the lens system is moving within a range where the lens system can be stopped. drive at high speed.

以下図面を参照しながら本発明の実施例について説明す
る。
Embodiments of the present invention will be described below with reference to the drawings.

第2図は本発明の一実施例を示す。FIG. 2 shows an embodiment of the invention.

この実施例はカメラにおいてズーミングレンズからなる
レンズ系11をモータで駆動する例である。
This embodiment is an example in which a lens system 11 consisting of a zooming lens in a camera is driven by a motor.

レンズ系11は駆動系及びモータ12により駆動され。The lens system 11 is driven by a drive system and a motor 12.

この駆動系及びモータ12はモータ及びこれとレンズ系
11との間に介在される歯車を含む駆動系からなる。レ
ンズ系11の位置はポテンショメータ13で検出され、
上記モータはモータ駆動装置i!14により駆動される
。モータ速度制御装置i!15はポテンショメータ13
の出力信号及びズームスイッチ16.マクロスイッチ1
7.収納スイッチ18.ワイドスイッチ19及びテレス
ッチ20からの信号に基いてモータ駆動袋[14を制御
する。
The drive system and motor 12 includes a motor and a gear interposed between the motor and the lens system 11. The position of the lens system 11 is detected by a potentiometer 13,
The above motor is a motor drive device i! 14. Motor speed control device i! 15 is potentiometer 13
output signal and zoom switch 16. macro switch 1
7. Storage switch 18. The motor-driven bag [14] is controlled based on signals from the wide switch 19 and the teleswitch 20.

第3図はレンズ系11の移動位置を示す。FIG. 3 shows the movement position of the lens system 11.

レンズ系11はズーム領域のワイド端Wからテレ端Tま
での間ではどこででも停止でき、また収納位置とマクロ
位置(マクロ撮影位置)でも停止できるが、収納位置か
らワイド端Wまでの領域と一テレ端からマクロ位置まで
の領域ではどこにも停止しない。
The lens system 11 can be stopped anywhere between the wide end W and the telephoto end T of the zoom range, and can also be stopped at the retracted position and the macro position (macro shooting position), but it cannot be stopped anywhere from the retracted position to the wide end W. It does not stop anywhere in the area from the telephoto end to the macro position.

上記ズームスイッチ16はレンズ系゛11をズーム領域
まで移動させるための手動スイッチであり、マクロスイ
ッチ17はレンズ系11をマクロ位置まで移動させるた
めの手動スイッチである。収納スイッチ18はレンズ系
11を収納位置まで移動するための手動スイッチであり
、ワイドスイッチ19はレンズ系11をワイド方向(広
角方向)へ移動させるための手動スイッチであり、テレ
スイッチ20はレンズ系11をテレ方向(無限方向)へ
移動させるための手動スイッチである。
The zoom switch 16 is a manual switch for moving the lens system 11 to the zoom range, and the macro switch 17 is a manual switch for moving the lens system 11 to the macro position. The storage switch 18 is a manual switch for moving the lens system 11 to the storage position, the wide switch 19 is a manual switch for moving the lens system 11 in the wide direction (wide angle direction), and the teleswitch 20 is a manual switch for moving the lens system 11 to the storage position. 11 in the tele direction (infinity direction).

モータ速度制御装置15はポテンショメータ13の出力
信号よりレンズ系11の位置を判断して操作スイッチ1
6〜20からの信号によりモータ駆動装置14を次の通
り制御する。
The motor speed control device 15 determines the position of the lens system 11 from the output signal of the potentiometer 13 and controls the operation switch 1.
The motor drive device 14 is controlled by signals from 6 to 20 as follows.

レンズ系11がズーム領域にあった場合テレスイッチ2
0からの信号によりテレスイッチ20のオンでモータ駆
動袋fi14にモータをレンズ系11がテレ端Tに達す
るまで低速度で駆動させ、ワイドスイッチ19からの信
号によりワイドスイッ19のオンでモータ駆動装置14
にモータをレンズ系11がワイド端Wに達するまで低速
度で駆動させる。さらに収納スイッチ18からの信号に
より収納スイッチ18のオンでモータ駆動装置14にモ
ータをレンズ系11が収納位置に達するまで高速度で駆
動させ、マクロスイッチ17からの信号によりマクロス
イッチ17のオンでモータ駆動装置14にモータをレン
ズ系11がマクロ位置に達するまで高速度で駆動させる
Teleswitch 2 when lens system 11 is in the zoom area
The signal from the wide switch 19 turns on the tele switch 20, causing the motor drive bag fi14 to drive the motor at low speed until the lens system 11 reaches the telephoto end T, and the signal from the wide switch 19 turns on the wide switch 19, causing the motor drive device 14
Then, the motor is driven at a low speed until the lens system 11 reaches the wide end W. Furthermore, a signal from the storage switch 18 causes the motor drive device 14 to drive the motor at high speed until the lens system 11 reaches the storage position when the storage switch 18 is turned on, and a signal from the macro switch 17 causes the motor to be driven when the macro switch 17 is turned on. The driving device 14 drives the motor at high speed until the lens system 11 reaches the macro position.

レンズ系11が収納位置にあった場合ズームスイッチ1
6からの信号によりズームスイッチ16のオンでモータ
駆動装置14にモータをレンズ系11がズーム領域に達
するまで高速度で駆動させ、マクロスイッチ17からの
信号によりマクロスイッチ17のオンでモータ駆動袋@
14にモータをレンズ系11がマクロ位置に達するまで
高速度で駆動させる。
When lens system 11 is in the storage position, zoom switch 1
When the zoom switch 16 is turned on by the signal from the macro switch 17, the motor drive unit 14 drives the motor at high speed until the lens system 11 reaches the zoom range.
14, the motor is driven at high speed until the lens system 11 reaches the macro position.

レンズ系11がマクロ位置にあった場合ズームスイッチ
16からの信号によりズームスイッチ16のオンでモー
タ駆動′3装置14にモータをレンズ系11がズーム領
域に達するまで高速度で駆動させ、収納スイッチ18か
らの信号により収納スイッチ18のオンでモータ駆動装
置14にモータをレンズ系11が収納位置に達するまで
高速度で駆動す8゜ レンズ系11がズーム領域、収納位置、マクロ位置以外
にあった場合ズームスイッチ16からの信号によりズー
ムスイッチ16のオンでモー9駆動装置14にモータを
レンズ系11がズーム領域に達するまで高速度で駆動さ
せ、マクロスイッチ17からの信号によりマクロスイッ
チ17のオンでモータ駆動装置14にモータをレンズ系
11がズーム位置に達するまで高速度で駆動させ、収納
スイッチ18からの信号により収納スイッチ18のオン
でモータ駆動装置14にモータをレンズ系11が収納位
置に達するまで高速度で駆動させる。
When the lens system 11 is in the macro position, the signal from the zoom switch 16 turns on the zoom switch 16 to cause the motor drive device 14 to drive the motor at high speed until the lens system 11 reaches the zoom range, and then the storage switch 18 When the storage switch 18 is turned on by a signal from A signal from the zoom switch 16 causes the motor 9 drive device 14 to drive the motor at high speed until the lens system 11 reaches the zoom range when the zoom switch 16 is turned on, and a signal from the macro switch 17 causes the motor to be driven when the macro switch 17 is turned on. The drive device 14 drives the motor at high speed until the lens system 11 reaches the zoom position, and when the storage switch 18 is turned on based on a signal from the storage switch 18, the motor drive device 14 drives the motor until the lens system 11 reaches the storage position. Drive at high speed.

(効  果) 以上のように本発明によればレンズ系を駆動するモータ
をどこででも停止できる範囲内では低速で駆動しどこに
も停止しない範囲を含む領域では高速で駆動するので、
駆動系のギヤ効率の低下やギヤスペースの増加を防止で
き、かつレンズ系の移動を早くできる。
(Effects) As described above, according to the present invention, the motor that drives the lens system is driven at low speed within the range where it can be stopped anywhere, and at high speed in the range where it does not stop anywhere.
It is possible to prevent a decrease in the gear efficiency of the drive system and an increase in the gear space, and also to speed up the movement of the lens system.

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

第1図は本発明の構成を示すブロック図、第2図は本発
明の一実施例を示すブロック図、第3図は同実施例を説
明するための図である。 1・・・・駆動系及びモータ、2・・・・モータ駆動装
置、3・・・・検出手段、4・・・・制御手段。 ≦715し14 因 篤? 因 ら3 図
FIG. 1 is a block diagram showing the configuration of the present invention, FIG. 2 is a block diagram showing an embodiment of the invention, and FIG. 3 is a diagram for explaining the embodiment. 1... Drive system and motor, 2... Motor drive device, 3... Detection means, 4... Control means. ≦715 and 14 Caused? Figure 3

Claims (1)

【特許請求の範囲】[Claims] レンズ系を駆動する駆動系及びモータと、このモータを
駆動するモータ駆動装置と、上記レンズ系がどこでも停
止できる停止可能範囲にあることを検出する検出手段と
、この検出手段の出力信号により上記レンズ系の上記停
止可能範囲内での移動では上記モータ駆動装置に上記モ
ータを低速で駆動させ上記レンズ系のどこにも停止しな
い範囲を含む領域の移動では上記モータ駆動装置に上記
モータを高速で駆動させる制御手段とを具備するレンズ
駆動装置。
A drive system and a motor that drive the lens system, a motor drive device that drives the motor, a detection means that detects that the lens system is within a stopping range where it can be stopped anywhere, and an output signal from the detection means that causes the lens to stop. When the system is moved within the range where the system can be stopped, the motor drive device drives the motor at a low speed, and when the lens system moves in an area including a range where it does not stop anywhere, the motor drive device is caused to drive the motor at a high speed. A lens driving device comprising a control means.
JP61313236A 1986-12-29 1986-12-29 Lens drive Expired - Lifetime JP2702474B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61313236A JP2702474B2 (en) 1986-12-29 1986-12-29 Lens drive

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61313236A JP2702474B2 (en) 1986-12-29 1986-12-29 Lens drive

Publications (2)

Publication Number Publication Date
JPS63167337A true JPS63167337A (en) 1988-07-11
JP2702474B2 JP2702474B2 (en) 1998-01-21

Family

ID=18038749

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61313236A Expired - Lifetime JP2702474B2 (en) 1986-12-29 1986-12-29 Lens drive

Country Status (1)

Country Link
JP (1) JP2702474B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01198713A (en) * 1988-02-03 1989-08-10 Asahi Optical Co Ltd Zoom lens driving device
JP2011257725A (en) * 2010-05-13 2011-12-22 Ricoh Co Ltd Lens drive device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6867810B1 (en) 1998-09-04 2005-03-15 Olympus Corporation Lens device for a camera with a stepping motor drive optimized for speed and power saving
JP5306055B2 (en) * 2009-05-21 2013-10-02 キヤノン株式会社 Imaging device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57192524U (en) * 1981-05-29 1982-12-06
JPS60108814A (en) * 1983-11-18 1985-06-14 Matsushita Electric Ind Co Ltd Lens moving device
JPS61264307A (en) * 1985-05-20 1986-11-22 West Electric Co Ltd Method and device for zooming

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57192524U (en) * 1981-05-29 1982-12-06
JPS60108814A (en) * 1983-11-18 1985-06-14 Matsushita Electric Ind Co Ltd Lens moving device
JPS61264307A (en) * 1985-05-20 1986-11-22 West Electric Co Ltd Method and device for zooming

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01198713A (en) * 1988-02-03 1989-08-10 Asahi Optical Co Ltd Zoom lens driving device
JP2709932B2 (en) * 1988-02-03 1998-02-04 旭光学工業株式会社 Zoom lens drive
JP2011257725A (en) * 2010-05-13 2011-12-22 Ricoh Co Ltd Lens drive device

Also Published As

Publication number Publication date
JP2702474B2 (en) 1998-01-21

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