JPS5931930A - Automatic focus controller of camera - Google Patents

Automatic focus controller of camera

Info

Publication number
JPS5931930A
JPS5931930A JP14098182A JP14098182A JPS5931930A JP S5931930 A JPS5931930 A JP S5931930A JP 14098182 A JP14098182 A JP 14098182A JP 14098182 A JP14098182 A JP 14098182A JP S5931930 A JPS5931930 A JP S5931930A
Authority
JP
Japan
Prior art keywords
motor
taking
winding
terminal
driving
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
JP14098182A
Other languages
Japanese (ja)
Other versions
JPH044574B2 (en
Inventor
Shinji Sakai
堺 信二
Takashi Kawabata
隆 川端
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP14098182A priority Critical patent/JPS5931930A/en
Publication of JPS5931930A publication Critical patent/JPS5931930A/en
Publication of JPH044574B2 publication Critical patent/JPH044574B2/ja
Granted legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/28Systems for automatic generation of focusing signals
    • G02B7/36Systems for automatic generation of focusing signals using image sharpness techniques, e.g. image processing techniques for generating autofocus signals

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Automatic Focus Adjustment (AREA)
  • Focusing (AREA)
  • Details Of Cameras Including Film Mechanisms (AREA)

Abstract

PURPOSE:To prevent the eary-stage consumption of a battery and the malfunction of a device, by providing a motor control means which inhibits the driving of a lens driving motor by the input of a signal during taking up of a film, and releasing the inhibition of the driving of the lens driving motor regardless of the input of the signal during taking up of a film once an external power source for taking up or external take-up driver is connected to a camera. CONSTITUTION:When a take-up driving mechanism operates by a bult-in power source Vbt, the output of a taking up completion terminal 4 goes down to a low level and a taking up motor WM is powered on through a diode 23 to wind a film; and the motor control means 29 inhibits the driving of the lens driving motor FM and prevents the consumption of large electric power simultaneously. On the other hand, when the external power source for taking up is connected to an external power source connection terminal 20, a taking up shaft is rotated by the taking up motor WM to take up the film. At the sam time, a high-level signal is inputted to the motor control means 29 through a signal line 26 to release the driving inhibition of the lens driving motor FM even during taking up operation.

Description

【発明の詳細な説明】 本発明は、自11i11巻上げ式又は手巻上げ式のカメ
ラの内蔵1’)I: fl’i’、から電力を供給され
るレンズ駆動用モータを備えた自動焦点制御装置の改良
に関するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention provides an automatic focus control device equipped with a lens drive motor supplied with power from a built-in 1') I: fl'i' of a wind-up or manual wind-up camera. This is related to the improvement of.

従来、レンズ駆動用モータと巻上駆動機構の両方に内蔵
電源から電力を供給する自動焦点カメラにおいては、こ
れらを同時に作動することにより大電力を消費すると、
内蔵電源が一時的に電圧降下の状態となり、自動巻上又
は焦点i、「6定の時間が長くなったり、誤作動する可
能性があり、また電池の消耗が早(なるため送に;゛1
フィルム本数が減ったりすることがあった。また、手巻
上げ式の自動焦点カメラにおいては、手巻上げ時に測距
ネIL野の移動により焦点調定の誤作動が生じる等の欠
点があった。
Conventionally, in autofocus cameras that supply power to both the lens drive motor and the winding drive mechanism from the built-in power supply, operating them simultaneously consumes a large amount of power.
If the built-in power supply temporarily drops in voltage, the automatic winding or focusing time may become longer, malfunction may occur, and the battery may run out quickly. 1
Sometimes the number of films was reduced. In addition, manual winding type autofocus cameras have drawbacks such as focus adjustment errors due to movement of the IL field during manual winding.

本発明の目的は、上述した欠点を除去し、自動巻上げ式
の自動焦点カメラに対しては、焦点調定と自動巻上げと
のためにカメラの内蔵電源から同時に犬1(イ、力を消
費するのを防ぐことができ、手巻上げ式の自動焦点カメ
ラに対しては、手巻上げ時の測距視野の移動による焦点
調定の誤作動を防止することができる自動焦点制御装置
を提供することである。
The purpose of the present invention is to eliminate the above-mentioned drawbacks and provide a self-winding autofocus camera that consumes power from the camera's built-in power source for focus adjustment and auto-winding at the same time. For hand-wound autofocus cameras, by providing an auto-focus control device that can prevent focus adjustment errors due to movement of the distance measurement field of view during hand-winding. be.

この目的を達成するために、本発明は、フィルムの巻上
中を表す巻上中信号の入力によりレンズ駆動用モータの
駆動を禁止し、巻上用外部電源又は外部巻上駆動装置の
カメラへの接続により、巻上中信号の入力にかかわらず
、レンズ駆動用モータの駆動禁止を解くモータ制御手段
を設けたことを竹f:“′4どする。
In order to achieve this object, the present invention prohibits the driving of the lens drive motor by inputting a winding signal indicating that the film is being wound, and connects the external winding power source or external winding drive device to the camera. This connection provides a motor control means for disabling the drive of the lens drive motor regardless of the input of the winding signal.

以下、本発明を図示の実検例に基づいて詳細に説明する
。1は自動露出制御ユニットで、撮影中ハイレベルの信
号を出力する撮影中端子2、撮影完了して巻上開始にな
るまでの間ハイレベルの信号を出力する巻上角0端子3
、巻上完了時から撮影完了までの間ハイレベルの信号を
出力する巻上完Δ11子4が設けられている。5はイン
バータ、6は公知の測距ユニットで、入ツノ端子7、シ
ーケンザSEQ、前0111 ml焦の時にハイレベル
の信号を出力する前側離角端子8、合焦の時ハイレベル
の信号を出力する合焦端子9、後側耐熱の時にハイレベ
ルのイハ号を出力する後側耐熱端子10を備えている。
EMBODIMENT OF THE INVENTION Hereinafter, this invention will be explained in detail based on the illustrated practical example. Reference numeral 1 designates an automatic exposure control unit, which includes a shooting terminal 2 that outputs a high-level signal during shooting, and a winding angle 0 terminal 3 that outputs a high-level signal from the time shooting is completed until winding starts.
, a winding complete terminal Δ11 4 is provided which outputs a high level signal from the time of completion of winding until the completion of photographing. 5 is an inverter, 6 is a known distance measuring unit, including an input horn terminal 7, a sequencer SEQ, a front elongation terminal 8 that outputs a high level signal when in focus, and a front elongation terminal 8 that outputs a high level signal when in focus. and a rear heat-resistant terminal 10 that outputs a high-level I/H signal when the rear heat-resistant state is set.

11〜13はアンドゲート、14は測距結果表示ユニッ
ト、15はオアゲート、16.17はアンドゲート、1
8.19はバッファ、FMはレンズ駆動用モータ、20
は外部電源接続端子、21は外部電源接続端子20に基
土用外部電源を接続したときにハイレベルとなる端子、
22.23はダイオード、WMは巻上用モータ、Vbt
はカメラの内蔵電源、24はトランジスタ、25はプル
ダウン抵抗、26は端子21とオアゲート15間に接続
される信号ライン、27は巻上光端子4からの13号を
反転し、抵抗28を通してトランジスタ24をオンオフ
させるインバータ、29はオアゲート15及びアンドゲ
ート16.17から形成される本発明のモータ制御手段
の一例を示す。
11 to 13 are AND gates, 14 is a distance measurement result display unit, 15 is an OR gate, 16.17 is an AND gate, 1
8.19 is the buffer, FM is the lens drive motor, 20
is an external power supply connection terminal, 21 is a terminal that becomes high level when the external power supply for the foundation is connected to the external power supply connection terminal 20,
22.23 is the diode, WM is the hoisting motor, Vbt
24 is a built-in power supply of the camera, 24 is a transistor, 25 is a pull-down resistor, 26 is a signal line connected between the terminal 21 and the OR gate 15, 27 is the inverted No. 13 from the winding optical terminal 4, and the transistor 24 is connected through the resistor 28. An inverter 29 for turning on and off indicates an example of the motor control means of the present invention formed from the OR gate 15 and AND gates 16 and 17.

次に動作について説明する。シャッターレリーズが開始
されると、撮影中端子2かもハイレベルの信号が出力さ
れ、インバータ5により反転されて、測距ユニット60
入力端子7に入力する。これによって、測距ユニット6
中のシーケンサSEQはリセットされ、測距素子を測距
開始準備状態に保つ。同時に、アンドゲート11〜13
の出力はローレベルとなるため、測距結果表示ユニット
14は表示を消す。撮影完了すると、撮影中端子2はロ
ート/ベルの信号を出力し、この信号はインバータ5李
により反転され、測距ユニット6のシーケンサSEQを
起動する。このため、測距ユニット6はυ1り距動作を
開始し、被写体までの距離に応じて、前側離角端子8、
合焦ΔA1子9、後側耐熱端子】0のいずれか一つから
ハイレベルの信号を出力する。例えば、前0−III離
焦端子8がアンドゲート11に対してハイレベルの信−
号を出力すれば、アンドゲート11の一方の入力端には
インバータ5により反転されたハイレベルの信号が入力
するため、その出力はハイレベルとなり、それにより迎
1距結果表示ユニット14は前側耐熱を表示する。
Next, the operation will be explained. When the shutter release starts, a high level signal is also output from the shooting terminal 2, which is inverted by the inverter 5 and sent to the distance measuring unit 60.
Input to input terminal 7. As a result, the distance measuring unit 6
The sequencer SEQ inside is reset to keep the ranging element in a state ready to start ranging. At the same time, and gates 11-13
Since the output becomes low level, the distance measurement result display unit 14 turns off the display. When photographing is completed, the photographing terminal 2 outputs a Roto/Bell signal, which is inverted by the inverter 5 and activates the sequencer SEQ of the distance measuring unit 6. Therefore, the distance measuring unit 6 starts the υ1 distance operation, and depending on the distance to the subject, the front elongation terminal 8,
Outputs a high level signal from one of focus ΔA1 terminals 9 and rear heat-resistant terminals 0. For example, the front 0-III defocusing terminal 8 sends a high level signal to the AND gate 11.
When the signal is output, a high-level signal inverted by the inverter 5 is input to one input terminal of the AND gate 11, so its output becomes a high level, and as a result, the front side heat-resistant display unit 14 Display.

ここで内蔵電源Vbtにより巻上駆動機構が動作した場
合は、巻上光端子4の出力はローレベルとなり(もちろ
ん巻上角0端子3もローレベルとなっている)、インバ
ータ27により反転され、抵抗28を通じトランジスタ
24をオンとし、ダイオード23を通じ巻上用モータW
Mに通電される。これによってフィルムが巻き上げられ
る。また、今外部電源は用いてないため、端子21はプ
ルダウン抵抗25によりローレベルなので、信号ライン
26はローレベルとなり、それと同時に前記の巻上角0
端子3と巻上光端子4の出力信−号はローレベルである
ので、モータ制御手段29によりレンズ駆動用モータF
Mの、駆動が禁止され、同時に大電力を消費することを
防いでいる。
Here, when the hoisting drive mechanism is operated by the built-in power supply Vbt, the output of the hoisting optical terminal 4 becomes a low level (of course the hoisting angle 0 terminal 3 is also at a low level), and is inverted by the inverter 27. The transistor 24 is turned on through the resistor 28, and the hoisting motor W is turned on through the diode 23.
M is energized. This winds the film. Also, since the external power supply is not currently being used, the terminal 21 is at a low level due to the pull-down resistor 25, so the signal line 26 is at a low level, and at the same time, the winding angle is 0.
Since the output signals of the terminal 3 and the winding optical terminal 4 are at low level, the motor control means 29 controls the lens drive motor F.
M is prohibited from being driven, and at the same time, it is prevented from consuming a large amount of power.

巻上げが完了すると、巻上光端子4の出力はハイレベル
となるので、トランジスタ24はオフして、巻上用モー
タW Mは停止する。同時に、メアゲート15の出力が
ハイレベルとなって、ハ・fレベルの信号はアンドゲー
ト1G又は17及びバッファ18又は19を経てレンズ
駆動用モータI” Mを駆動し、レンズを合焦位置に移
動させる。
When the winding is completed, the output of the winding optical terminal 4 becomes high level, so the transistor 24 is turned off and the winding motor WM is stopped. At the same time, the output of the mere gate 15 becomes high level, and the signal of the c/f level passes through the AND gate 1G or 17 and the buffer 18 or 19, drives the lens drive motor I"M, and moves the lens to the focusing position. let

一方、基土用外部電源を用いた場合には、外部11イ、
源接続端子20に基土用外部電源が接続されることによ
り端子21がノ・イレベルとなり、ダイオード22を通
し巻上用モータWMに通電され、この時、巻上完端子4
から出力されているローレベルの信号は、インバータ2
7により反転されて、抵抗28を通じトランジスタ24
をオンの状態にする。そのため巻上用モータWMにより
巻上軸が回転し、フィルムが巻き」二げられる。同時に
信号ライン26は、端子21がハイレベルであるので、
モータ制御手段29ヘハイレベルの信号を入力する。そ
れにより巻上中であつCも、アントゲ−)16.17の
開通によりレンズ駆動用モータFMの駆動禁止が解けて
、例えば、測距ユニット6の前」す耐熱端子8がハイレ
ベルの信号を出力していれば、アンドゲート11.16
を通してレンズ駆動用モータFMが駆動され、焦点調定
が行われる。このように巻上用モータ〜VMとレンズ9
(< Q用モータFMとを同時に動作させることができ
、そのため、速写が可能となる。
On the other hand, when using an external power supply for the foundation,
By connecting the external power supply for the base to the power source connection terminal 20, the terminal 21 becomes a noise level, and the hoisting motor WM is energized through the diode 22, and at this time, the hoisting completion terminal 4
The low level signal output from inverter 2
7 and is inverted by transistor 24 through resistor 28.
Turn on. Therefore, the winding shaft is rotated by the winding motor WM, and the film is wound and unwound. At the same time, since the terminal 21 of the signal line 26 is at a high level,
A high level signal is input to the motor control means 29. As a result, even during winding, the prohibition of driving the lens drive motor FM is released due to the opening of the ant game (16.17), and for example, the heat-resistant terminal 8 in front of the distance measuring unit 6 receives a high-level signal. If it is output, AND gate 11.16
The lens drive motor FM is driven through the lens, and focus adjustment is performed. In this way, the hoisting motor ~ VM and lens 9
(< It is possible to operate the Q motor FM at the same time, making it possible to take quick pictures.

巻上用モータWMを備えていない手巻上げ式の自動焦点
カメラ、或は自動巻上げと手巻上げとが選択できる自動
角点カメラにおいて、自動露出制御ユニット1及びモー
タ制御手段29を備えていれば、手巻−ヒげによる巻上
中に、オアゲート15の出力はローレベルとなって、ア
ンドゲート16.17を閉成するので、レンズn〈動用
モータFMの駆動が禁止される。そのため、手巻上げ時
の測距視野の移動による焦点調定の誤動作を防止するこ
とができる。また、手巻上げの場合には、撮影後の確認
などのために、撮影完了から次の巻上げまでに間かあ(
ことが多いが、この期間には、巻上角0端子3かも7・
イレベルの信号が出力され、オアゲート15を経てアン
ドゲート16.17を開通するので、自動焦点制定が可
能となり、応答性を良くすることができる。
If a manual winding type autofocus camera is not equipped with a winding motor WM or an automatic corner point camera in which automatic winding and manual winding can be selected, the automatic exposure control unit 1 and the motor control means 29 are provided. During manual winding, the output of the OR gate 15 becomes a low level and the AND gates 16 and 17 are closed, so that driving of the lens n< moving motor FM is prohibited. Therefore, it is possible to prevent malfunctions in focus adjustment due to movement of the distance measurement field of view during manual winding. In addition, if you are winding the film by hand, there may be some time between the completion of shooting and the next winding (
However, during this period, the winding angle may be 0, 3 or 7.
Since the level signal is output and the AND gates 16 and 17 are opened via the OR gate 15, automatic focusing becomes possible and responsiveness can be improved.

また、非図示の外部巻上駆動装置を用いて巻上げ動作を
する場合には、巻上用外部電源を用いた時と同様に、モ
ータ制御手段29への信号ライン26を利用し、巻上げ
開始と同時に、〕・イレベルの信号を出力し、巻上げが
完了するとローレベルの信号となる端子を外部巻上駆動
装置に備え、そのす、゛4子と信号ライン26を接続す
れば、焦点調定と自動巻上げとを同時に動作させること
ができ、前記巻上用外部!t1〔源を用いた時と同じ(
速写が可能となる。
In addition, when performing a hoisting operation using an external hoisting drive device (not shown), the signal line 26 to the motor control means 29 is used to control the start of hoisting, as in the case of using an external power supply for hoisting. At the same time, if the external winding drive device is equipped with a terminal that outputs a low level signal and becomes a low level signal when winding is completed, then by connecting the signal line 26 to the Automatic winding and external winding can be operated at the same time! t1 [same as when using source (
It becomes possible to take quick pictures.

図示実施例では、巻」二角0端子3と巻上完端子4のハ
イレベルの信号をオアゲート15に入力することによっ
て、巻上中を表す信号をオアゲート15のローレベルの
出力信号として得ているが、これに限定されるもので゛
はなく、例えば、巻上レバーの動作によって巻上中信号
を直接得るようにすることができる。
In the illustrated embodiment, a signal indicating that winding is in progress is obtained as a low level output signal of the OR gate 15 by inputting high level signals from the winding terminal 3 and the winding complete terminal 4 to the OR gate 15. However, the present invention is not limited to this. For example, the winding signal can be directly obtained by operating the winding lever.

また、ダイゝオード22.23は、外部電源接続端子2
0に機械的に連動するスイッチ、もしくはリレー等に代
えることも容易である。更に、外部電源接続端子20に
接続される外部電源は、巻上用モータWMのみに電力を
供給せずに、レンズ駆動用モータFMにも電力を供給す
るようにしてもよい。
In addition, the diodes 22 and 23 are connected to the external power supply connection terminal 2.
It is also easy to replace it with a switch or relay that mechanically interlocks with 0. Furthermore, the external power supply connected to the external power supply connection terminal 20 may supply power not only to the winding motor WM but also to the lens drive motor FM.

以上説明したように、本発明によれば、フィルムの巻上
中を表す巻上中信号の入力によりレンズ駆動用モータの
駆動を禁止し、巻上用外部電源又は外部巻上駆動装置の
カメラへの接続により、巻上中信号の入力にかかわらず
レンズPL(動用モータの+!4<動禁止を解くモータ
制御手段を設けたから、自動巻上げ式の自動焦点カメラ
に対しては、焦点調定と自動巻上げとのためにカメラの
内蔵電源から同時に大′屯力を消費するのを防ぐことが
でき、手巻上げ式の自動焦点カメラに対しては、手巻上
げ時の測距視野の移動による焦点調定の誤作動を防止す
ることができる。
As explained above, according to the present invention, driving of the lens drive motor is prohibited by inputting the winding signal indicating that the film is being wound, and the external power supply for winding or the camera of the external winding drive device is By connecting the , we have provided a motor control means to release the lens PL (+! Automatic winding prevents the camera's built-in power supply from consuming a large amount of power at the same time, and for hand-winding autofocus cameras, focusing can be adjusted by moving the distance measurement field during manual winding. It is possible to prevent certain malfunctions.

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

図面は本発明の一実施例を示す回路図である。 1・−・自動ぶS量制御ユニット、2・・・撮影中端子
、3・・・巻上角0端子、4・・・巻上完端子、6・・
・測距ユニット、8・・・前側耐熱端子、9・・・合焦
端子、10・・・後0!II 耐熱端子、11〜13・
・・アンドゲート、14・・・測距結果表示ユニット、
15・・・オアゲート、16,17・・・アンドゲート
、20・・・外部電源接続端子、22.23・・〜ダイ
オード、26・・・信号ライン、29・・・モータ制御
手段、FM・・・レンズ駆動用モータ、WM・・・巻」
1用モータ、SEQ・・・シーケンサ。 特許出願人  キャノン株式会社
The drawing is a circuit diagram showing an embodiment of the present invention. 1... Automatic S amount control unit, 2... Shooting terminal, 3... Winding angle 0 terminal, 4... Winding complete terminal, 6...
・Distance measurement unit, 8...Front heat-resistant terminal, 9...Focusing terminal, 10...Rear 0! II Heat-resistant terminal, 11-13・
...AND gate, 14...Distance measurement result display unit,
15...OR gate, 16,17...AND gate, 20...External power supply connection terminal, 22.23...~diode, 26...signal line, 29...motor control means, FM...・Lens drive motor, WM... volume
1 motor, SEQ...sequencer. Patent applicant Canon Co., Ltd.

Claims (1)

【特許請求の範囲】[Claims] 1、 カメラの内蔵11℃源から電力を供1:′iされ
るレンズ駆動用モータを備えたカメラの自動焦点制御装
置において、フィルムの巻上中を表す巻上中信号の入力
によりレンズ、駆動用モータの駆動を禁1)−シ、枠上
用外部電源又は外部巻上1;■<動装j”iのカメラへ
の接続により、巻上中(、M1号の入力Kかかわら1°
、レンズIg< 1IIIl用モータの、!1べ動禁止
を解(モータ制御手段を設けたことを特徴とするカメラ
の自動焦点制御装置。
1. In an automatic focus control device for a camera equipped with a lens drive motor that is supplied with power from the camera's built-in 11°C source, the lens is driven by inputting a winding signal indicating that the film is being wound. 1) - External power source for the frame or external winding 1;
, of the motor for lens Ig< 1IIIl,! An automatic focus control device for a camera, characterized in that it is equipped with a motor control means that eliminates the prohibition of movement.
JP14098182A 1982-08-16 1982-08-16 Automatic focus controller of camera Granted JPS5931930A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14098182A JPS5931930A (en) 1982-08-16 1982-08-16 Automatic focus controller of camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14098182A JPS5931930A (en) 1982-08-16 1982-08-16 Automatic focus controller of camera

Publications (2)

Publication Number Publication Date
JPS5931930A true JPS5931930A (en) 1984-02-21
JPH044574B2 JPH044574B2 (en) 1992-01-28

Family

ID=15281347

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14098182A Granted JPS5931930A (en) 1982-08-16 1982-08-16 Automatic focus controller of camera

Country Status (1)

Country Link
JP (1) JPS5931930A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6294825U (en) * 1985-12-05 1987-06-17

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6294825U (en) * 1985-12-05 1987-06-17

Also Published As

Publication number Publication date
JPH044574B2 (en) 1992-01-28

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