JPH0329933A - Autofocusing device for camera - Google Patents
Autofocusing device for cameraInfo
- Publication number
- JPH0329933A JPH0329933A JP16605889A JP16605889A JPH0329933A JP H0329933 A JPH0329933 A JP H0329933A JP 16605889 A JP16605889 A JP 16605889A JP 16605889 A JP16605889 A JP 16605889A JP H0329933 A JPH0329933 A JP H0329933A
- Authority
- JP
- Japan
- Prior art keywords
- distance
- distance member
- sequence
- drive member
- monitoring point
- 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
Links
- 238000012544 monitoring process Methods 0.000 claims abstract description 27
- 238000012790 confirmation Methods 0.000 claims abstract description 15
- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 230000002159 abnormal effect Effects 0.000 claims description 12
- 238000012300 Sequence Analysis Methods 0.000 claims description 7
- 230000002265 prevention Effects 0.000 claims description 6
- 230000014759 maintenance of location Effects 0.000 claims 2
- 238000000034 method Methods 0.000 description 24
- 230000008569 process Effects 0.000 description 24
- 238000012545 processing Methods 0.000 description 7
- 238000005375 photometry Methods 0.000 description 6
- 102100031910 A-kinase anchor protein 3 Human genes 0.000 description 5
- 101000774732 Homo sapiens A-kinase anchor protein 3 Proteins 0.000 description 5
- 101100322820 Arabidopsis thaliana AHL29 gene Proteins 0.000 description 4
- 230000005856 abnormality Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 101100501963 Caenorhabditis elegans exc-4 gene Proteins 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- OBQVBASHEWLKCQ-PKBWNXTMSA-N eoxin C4 Chemical compound OC(=O)[C@@H](N)CCC(=O)N[C@H](C(=O)NCC(O)=O)CS[C@@H]([C@@H](O)CCCCC)\C=C\C=C\C=C/C\C=C/CCCC(O)=O OBQVBASHEWLKCQ-PKBWNXTMSA-N 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 101100501772 Arabidopsis thaliana ESR2 gene Proteins 0.000 description 1
- 102220578651 Protein flightless-1 homolog_F26N_mutation Human genes 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 239000013256 coordination polymer Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Landscapes
- Focusing (AREA)
- Shutters For Cameras (AREA)
- Automatic Focus Adjustment (AREA)
Abstract
Description
【発明の詳細な説明】
［産業］二の利用分野］
本発明はカメラの自動焦点調節装置に係わり、特に、距
離部相が始動位置から撮影レンズな合焦位置へ遷移する
までの動作シーケンスが解析できるカメラの自動焦点調
節装置に関する。[Detailed Description of the Invention] [Industry] Second Field of Application] The present invention relates to an automatic focusing device for a camera, and in particular, to an automatic focusing device for a camera, and in particular, to an automatic focusing device for a camera, and in particular, to an automatic focusing device for a camera. This article relates to an automatic focusing device for cameras that can be analyzed.
［従来技術コ
従来のカメラの自Ｓ）＋焦点調節装置は第６図に示すよ
うに、撮影レンズ焦点調節機構がシャッタユニット側に
設けてある。シャッタユニット側の基板に回動し得るよ
うに取リイ」げられた駆動部材１は、周上の士クタキャ
１ａと噛み合うアイトラ３を介してステップモータ４に
駆動され、予め設定されたプログラムに従ってステップ
モータ４が合焦、露光、リターンのための正転及ひ逆転
を行なうのに呼応して正方向及び逆方向に回動ずるよう
に構成ざれ、さらにこの駆動部材１の同上には、セクタ
開閉レハー５に作用して図示しないセクタを開閉するｋ
めのセクタ開閉用カム１ｂが突出形成ざれている。[Prior Art] As shown in FIG. 6, the focus adjustment mechanism of the conventional camera is provided with a focus adjustment mechanism on the shutter unit side. The driving member 1, which is rotatably mounted on the board on the shutter unit side, is driven by a step motor 4 via an eyeliner 3 that engages with the driver 1a on the circumference, and is driven by a step motor 4 in accordance with a preset program. The motor 4 is configured to rotate in the forward and reverse directions in response to forward and reverse rotations for focusing, exposure, and return. Opens and closes a sector (not shown) by acting on Leher 5.k
A second sector opening/closing cam 1b is formed to protrude.
一方、６はレンズ駆動部６ａを介して図示しない撮影レ
ンズを作動し、これを合焦位置に移動セットするための
距離部材で、駆動部材１と同様にシャツタユニット側の
基板２に回動し得るように取り付けられている。この距
離部材６にはラチェッ１・車７と一体のピニオン７ａと
噛み合うセクタギャ６ｂが設けられ、また、バネ６Ｃに
より図中時計回りの回動習性が付与されて、駆動部材１
とともに回動するように構成されている。８は、ハネ８
ａによって右旋性を付与された状態で基板２上のビンに
枢支ざれた係止レハーで、その一端に結合した鉄片９ａ
を介して電磁石９に吸引保持されるよう構成され、電磁
石９ （ＡＦマグネットともいう）が消磁すると図中時
計方向に回動し、その先端の爪をラチェッ１・車７の歯
間に係合させて距離部材６を合焦位置に拘止ずるよう構
成されている。On the other hand, 6 is a distance member for operating a photographing lens (not shown) via a lens drive unit 6a and moving and setting it to a focusing position, and similarly to the drive member 1, it is rotated to the substrate 2 on the shutter unit side. It is installed so that it can be used. This distance member 6 is provided with a sector gear 6b that meshes with a pinion 7a integrated with the ratchet 1 and wheel 7, and is given a clockwise rotational habit by a spring 6C, so that the drive member 1
It is configured to rotate with the 8 is Hane 8
The iron piece 9a is connected to one end of the locking lever which is pivotally supported on the bottle on the substrate 2 in a state in which dextrorotation is imparted by a.
When the electromagnet 9 (also referred to as AF magnet) is demagnetized, it rotates clockwise in the figure, and the claw at the tip engages between the teeth of the ratchet 1 and the wheel 7. The distance member 6 is configured to be held at the in-focus position.
他方、駆動部材１を駆動するステップモータ４の一端に
固定されたビニオンｌｌａはステップモータ４の逆転に
より駆動部材１、距離部材６を介しラチェツ１・車７を
時計方向に回転させ係止レハー８を押し上げる。そして
、その時点て電磁石９に通電されると係止レバー８は先
端部がラチェット車７の歯部を係止しない位置に保持さ
れる。On the other hand, the pinion lla fixed to one end of the step motor 4 that drives the drive member 1 rotates the ratchet 1 and the wheel 7 clockwise via the drive member 1 and the distance member 6 by reversing the step motor 4 and locks the locking lever 8. push up. At that point, when the electromagnet 9 is energized, the locking lever 8 is held in a position where the tip end does not lock the teeth of the ratchet wheel 7.
ついて、ステップモータ４は合焦．動作のための正転に
移って、回転伝達軸に固定されたピニオン１１ａを介し
てこの回転を基板２に配設した駆動部材１に伝え、バネ
６Ｃによりこれに追従する距離部材６を図中時計方向に
回動させる。一方、この距Ｓｔ部＋Ｊ’ ６の回動によ
り図示しない走査用レハーは、保持した発光素子を走査
し、また図示しない受光素子は、発光素子からの光を被
写体からの反射光として受光し、合焦点において合焦信
号を出力してファインダ内に距離情報を表示する。また
、合焦信号により電磁石９への通電を断って係止レバー
８を右旋させ、ラチェット車７を係止して距離部材６を
拘止し、合焦位置に撮影レンズを位置決めする。Then, the step motor 4 is focused. Shifting to normal rotation for operation, this rotation is transmitted to the drive member 1 disposed on the base plate 2 via the pinion 11a fixed to the rotation transmission shaft, and the distance member 6 that follows this with the spring 6C is shown in the figure. Rotate clockwise. On the other hand, due to the rotation of this distance St + J' 6, the scanning laser (not shown) scans the held light emitting element, and the light receiving element (not shown) receives the light from the light emitting element as reflected light from the subject. A focus signal is output at the focused point and distance information is displayed in the finder. Further, in response to the focus signal, the electromagnet 9 is de-energized, the locking lever 8 is rotated to the right, the ratchet wheel 7 is locked, the distance member 6 is locked, and the photographing lens is positioned at the in-focus position.
ステップモータ４が更に回転ずると駆動部材１が時計方
向に回転しカム部１１）てセクタ開閉レハー５のピン５
ａを左旋回させる。ビン５ａが左旋回する時には距離部
材６の回転を支配していたステップモータ４はシャッタ
露出動作の動作によりその支配を切断され、所定のシャ
ッタ開閉動作を行なう。なお、ステップモータ４の正転
、逆転はステップモータ駆動回路４ａて生成ずる位相パ
ルスて行なう。When the step motor 4 rotates further, the drive member 1 rotates clockwise, and the cam part 11) causes the pin 5 of the sector opening/closing gear 5.
Turn a to the left. When the bin 5a rotates to the left, the step motor 4, which was controlling the rotation of the distance member 6, is no longer controlled by the shutter exposure operation, and a predetermined shutter opening/closing operation is performed. Note that the forward and reverse rotations of the step motor 4 are performed by phase pulses generated by the step motor drive circuit 4a.
また、距離部Ｉ１ ６が始動位置にあるときは、ハネ６
ｃの弾性により距離部材６は常時、時計方向にｌｌｆ１
！ざれ、距離部材位置確認手段として設けられたホーム
スイッチＨ ｓは開成している。距離部材６が始動位置
から合焦動作へ遷移するとホームスイッチＨＳは閉成す
るので距離部材６の動作シーケンスが正常であることが
判る。Also, when the distance part I1 6 is at the starting position, the spring 6
Due to the elasticity of c, the distance member 6 always moves llf1 clockwise.
! However, the home switch Hs provided as distance member position confirmation means is open. When the distance member 6 transitions from the starting position to the focusing operation, the home switch HS closes, indicating that the operation sequence of the distance member 6 is normal.
［発明が解決しようとする課題コ
上記構成のカメラの自動焦点調節装置は距離部材６のビ
ン６ｄにホームスイッチＨｓが設けてあるのでステップ
モータ４を逆転させ、かつ、ラチェッ１・車７を時計方
向に回転ざせ、係止レバー８を押し上げて、係止レバー
８の先端部がラチェツ１・車７の歯部を係止しない位置
に保持される。ラチェット車７の第１の歯部から距離部
材６がピニオン７ａを介して逆転し、ホームスイッチＨ
ｓが閉成するまでの間は歯部を設けることのできない最
低のストロークが必要である。通常、この歯部は３０〜
４０ステップ設けられているが歯部を設けないラチェッ
！・車７の上記最低ストロークはパルス数に換算して８
パルス必要であり、歯部の３０〜４０の２０％程度に達
し、このストロークを合焦動作に利用できない難点があ
る。[Problems to be Solved by the Invention] The automatic focus adjustment device for the camera having the above configuration is provided with a home switch Hs on the bin 6d of the distance member 6, so that the step motor 4 is reversed, and the ratchet 1 and wheel 7 are set to the clock. direction and push up the locking lever 8, so that the tip of the locking lever 8 is held in a position where it does not lock the teeth of the ratchet 1 and the wheel 7. The distance member 6 rotates in reverse from the first tooth portion of the ratchet wheel 7 via the pinion 7a, and the home switch H
Until s is closed, the minimum stroke that does not allow toothing is required. Usually, this tooth part is 30~
A ratchet with 40 steps but no teeth!・The above minimum stroke of car 7 is converted to the number of pulses and is 8.
A pulse is required, reaching about 20% of the 30 to 40 teeth, and there is a drawback that this stroke cannot be used for focusing operation.
また、歯部と係止レバー８の先頭部との噛み合５
６
わせ誤差は極めて少ないよう精密加工されているので、
第１の歯部と係止レハー８は噛み合わせか正しく行なわ
れないまま、っぎの距離部材による動作シーケンスが実
行される等の難点がある。In addition, the teeth are precisely machined so that the engagement error between the teeth and the top of the locking lever 8 is extremely small.
There is a problem in that the first tooth portion and the locking gear 8 are not properly engaged with each other, and the operation sequence by the second distance member is executed.
［発明の目的コ
本発明は上述した難点に鑑みなされたもので、駆動部材
の作動監視点における位置を確認する手段と、距離部材
の合焦動作シーケンスを解析する手段とを設けることに
より、ラチェット車の無効ス１・ロークを減少させたカ
メラの自動焦点調節装置を提供することを目的とする。[Object of the Invention] The present invention has been made in view of the above-mentioned difficulties, and it is possible to improve the ratchet by providing means for confirming the position of the drive member at the operation monitoring point and means for analyzing the focusing operation sequence of the distance member. An object of the present invention is to provide an automatic focus adjustment device for a camera that reduces ineffective strokes and strokes of a vehicle.
また、距離部材とラチェッｌ・車の第１歯部との噛み合
わせの異常を防止する手段を設けることにより、正常な
合焦動作が期待できるカメラの自動焦点調節装置を提供
することを目的とする。Another object of the present invention is to provide an automatic focus adjustment device for a camera in which normal focusing operation can be expected by providing means for preventing abnormal engagement between the distance member and the first tooth of the ratchet wheel. do.
［課題を解決するための手段］
本発明によるカメラの自動焦点調節装置は、正転、逆転
可能なモータと、前記モータにより作動される駆動部材
と、前記駆動部材に追従して作動し撮影レンズを初期位
置にセットし、かつ繰出す距離部材と、前記距離部材を
所定の繰出し位置に拘止する距離部材係止機構と、前記
駆動部材の作動監視点における前記駆動部Ｈの位置を確
認し位置確認信号を出力する駆動部材位置確認手段と、
前記初期位置にある前記距離部材の始動位置から前記所
定の繰出し位置で拘止されるまでのシーケンスを解析す
る距離部材シーケンス解析手段で構成する。[Means for Solving the Problems] An automatic focusing device for a camera according to the present invention includes a motor capable of forward and reverse rotation, a drive member operated by the motor, and a photographing lens that operates in accordance with the drive member. is set at the initial position, and the distance member to be fed out, the distance member locking mechanism that locks the distance member at a predetermined feeding position, and the position of the drive unit H at the operation monitoring point of the drive member are confirmed. drive member position confirmation means for outputting a position confirmation signal;
The distance member sequence analysis means is configured to analyze a sequence from the start position of the distance member at the initial position to the time when the distance member is stopped at the predetermined extended position.
また、本発明によるカメラ正転、逆転可能なモータと、
前記モータにより作動される駆動部材と、前記駆動部材
材に追従して作動し撮影レンズを初期位置にセットし、
かつ繰出す距離部材と、前記距離部材を所定の繰出し位
置に拘止する距離部材係止機構と、前記駆動部材の作動
監視点における前記駆動部材の位置を確認し位置確認信
号を出力する駆動部材位置確認手段と、前記初期位置に
ある前記距離部材の始動位置から前記所定の繰出し位置
で拘止されるまでのシーケンスを解析する距離部材シー
ケンス解析手段と、前記距離部材の初期位置における異
常拘止を防止する距離部材異常拘止防止手段とで構成す
る。Further, a motor capable of forward and reverse rotation of the camera according to the present invention,
a driving member operated by the motor; and a photographing lens that operates following the driving member to an initial position;
and a distance member to be fed out, a distance member locking mechanism that locks the distance member at a predetermined feeding position, and a drive member that confirms the position of the drive member at an operation monitoring point of the drive member and outputs a position confirmation signal. a position confirmation means; a distance member sequence analysis means for analyzing a sequence from a starting position of the distance member at the initial position until the distance member is restrained at the predetermined extended position; and abnormal restraint of the distance member at the initial position. and a distance member abnormal restraint prevention means for preventing.
［実施例コ
以下、本発明によるカメラの自動焦点調節装置の一実施
例を第１図〜第４図に従って詳述する。[Embodiment 1] Hereinafter, an embodiment of an automatic focusing device for a camera according to the present invention will be described in detail with reference to FIGS. 1 to 4.
第１図〜第４図と第５図で同一のものには同一符号を付
してあるから説明を省略する。Components that are the same in FIGS. 1 to 4 and FIG. 5 are designated by the same reference numerals, so their explanation will be omitted.
第１図に示す駆動部材１の外周部に設けｋ凸部にはピン
１ｃが設けてある。ビン１ｃは常間接点で構成されるホ
ームスイッチＨ ｓの可動接点ｈ１の先端を支承し、駆
動部材１が時計方向に回転ずると可動接点ｈ１と固定接
点ｈ２は開成する。A pin 1c is provided on the protrusion k provided on the outer peripheral portion of the drive member 1 shown in FIG. The bottle 1c supports the tip of the movable contact h1 of the home switch Hs, which is composed of a constant contact, and when the drive member 1 rotates clockwise, the movable contact h1 and the fixed contact h2 are opened.
ホームスイッチＨｓの開閉は第２図に示す制御回路ＣＰ
Ｕのデータバス２０を介して主制御部１９へ入力される
。The opening/closing of the home switch Hs is controlled by the control circuit CP shown in Figure 2.
The signal is input to the main control unit 19 via the U data bus 20.
ホームスイッチＨｓの開閉は第３図に示すシーケンス解
析プログラムＡＮＬのシーケンス監視点ＳＯＢ１、ＳＯ
Ｂ２、ＳＯＢ３の判断ボックスＦＨ，、Ｆ Ｈ ２、Ｆ
Ｈ３て判断ざれる。また、シーケンス監視点ＳＯＢ４に
おけるホームスイッチＨ ｓの開閉は第４図に示す測光
、露出プログラムＥＸｃ３の判断ボックスＦＨ４で判断
される。なお、第３図に示すプロセス実行プログラムＥ
ＸＣ２ではシーケンス監視点ＳＯＢ１を判断ボックスＦ
Ｈ’，で判断ずる。The opening and closing of the home switch Hs is performed at the sequence monitoring points SOB1 and SO of the sequence analysis program ANL shown in Figure 3.
B2, SOB3 judgment box FH,, F H 2, F
I can't judge H3. Further, the opening/closing of the home switch Hs at the sequence monitoring point SOB4 is determined by the decision box FH4 of the photometry/exposure program EXc3 shown in FIG. Note that the process execution program E shown in FIG.
In XC2, determine sequence monitoring point SOB1 in box F
Judge by H'.
なお、第２図に示す正逆転パルス送出部１５、ＡＦマグ
ネッ１・駆動部１６、シャッタ速度演算部１７、焦点調
節演算部１日は測光器１７ａ、測距器１８ｂから測光デ
ータ、測距データを人力され、前記各種プログラムＥＸ
Ｃ，〜ＥＸＣ５及びＡＮＬの制御を受ける。Note that the forward/reverse pulse sending unit 15, AF magnet 1/drive unit 16, shutter speed calculation unit 17, and focus adjustment calculation unit shown in FIG. The above various programs EX
Controlled by C, ~EXC5 and ANL.
第３図に示す測距プログラムＥＸＣ，は第２図にボすレ
リーズ釦ＳＷのオン、オフを判断ボックスＦ１で判断し
、レリーズ釦ＳＷがオンのときは処理Ｆ２でパワーホー
ルトし、処理Ｆ３で測距する。The distance measurement program EXC shown in FIG. 3 judges whether the release button SW is on or off in the judgment box F1 shown in FIG. Measure the distance.
測距が実行されるとシーケンス解析プログラムＥＸＣ２
を起動する。シーケンス解析プログラムＦＸＣ２はシー
ケンス監視点ＳＯＢ，、ＳｏＢ２、ＳＯＢ３におけるホ
ームスイッチＨｓの開閉を解析し、異常なときは処理Ｆ
７、Ｆ８、ｐｉｅでプロセスインジケータＰＩを１、２
又は３に設定し、プ９ 一
１０
ロセス実行プログラムＥｘＣ２へ制御を渡す。正常なと
きは処理１５てプロセスインジケータＰＩを８に設定し
、測光、露出プログラムＥＸｃ３へ制御を渡す。When distance measurement is executed, the sequence analysis program EXC2
Start. The sequence analysis program FXC2 analyzes the opening and closing of the home switches Hs at the sequence monitoring points SOB, SoB2, and SOB3, and if an abnormality occurs, performs processing F.
7, F8, pie to set process indicator PI to 1, 2
or 3, and transfers control to the process execution program ExC2. When normal, the process indicator PI is set to 8 in step 15, and control is passed to the photometry and exposure program EXc3.
シーケンス解析プログラムＡ． Ｎ Ｌは判断ボックス
ＦＨ１でシーケンス監視点ＳＯＢ，を監視し、正常なと
きは処理Ｆ４、Ｆ５、Ｆ６て逆転３バルス、ＡＰマクネ
ッ１・ＯＮ、正転３バルスを実行する。Sequence analysis program A. N L monitors the sequence monitoring point SOB, using the judgment box FH1, and when normal, executes processes F4, F5, and F6 to execute 3 pulses of reverse rotation, 1 ON of AP machining, and 3 pulses of forward rotation.
つぎに、判断ボックスＦＨ２でシーケンス監視点ＳＯＢ
２を監視し、正常なときは、判断ボックスＦ９でレンズ
ドライブ工程が終了するまて処理Ｆ１４て正転１バルス
を送出し、レンズ１・ライブエ程が終了したら先に説明
したように処理１５てＰＩ＝８とする。レンズドライブ
工程の途中の正転５パルス目て判断ボックスＦＨ３でシ
ーケンス監視点ＳＯＢ３を監視ずる。正転５バルス目以
外は判断ボックスＦ１２、処理Ｆ１３を実行してから処
理１４て正転１パルスを送出する。Next, in decision box FH2, select sequence monitoring point SOB.
2 is monitored, and if it is normal, the lens drive process is completed in judgment box F9, and then one pulse of normal rotation is sent in process F14, and when the lens 1 live process is completed, process 15 is performed as explained earlier. Let PI=8. At the 5th normal rotation pulse in the middle of the lens drive process, the sequence monitoring point SOB3 is monitored using the judgment box FH3. For cases other than the 5th normal rotation pulse, judgment box F12 and process F13 are executed, and then in process 14, one normal rotation pulse is sent out.
プロセス実行プログラムＥＸＣ２はＰｌ＝１、ＰＩ＝２
、ＰＩ＝３で分岐し、処理Ｆ１７、Ｆ２１、？２３へ遷
移ずる。ＰＩ＝１のときは処理Ｆ１■、Ｆ１ａ、判断ボ
ックスＦ１９を実行して逆転４バルス送出、カウンタに
１を加算、ｎ回繰返したかを判断し、判断ボックスＰＨ
４でシーケンス監視点ＳＯＢ１を監視ずる。監視の結果
、異常がなげれば処理２０てＰＩ＝０とし、測光、露出
プログラムＥＸＣ３を起動する。ＰＩ＝２のときは処理
Ｆ２１、Ｆ２２てＡＦマグネッ｝ ＯＦＦ、逆転４パル
ス送出を実行する。ＰＩ＝３のときは処理Ｆ２３、Ｆ２
４でＡＦマグネッ１・ＯＦＦ、逆転９パルス送出を実行
ずる。Process execution program EXC2 has Pl=1, PI=2
, branches at PI=3 and processes F17, F21, ? Transition to 23. When PI=1, execute processing F1■, F1a, judgment box F19, send out 4 reverse pulses, add 1 to the counter, judge whether it has been repeated n times, and check judgment box PH.
4, the sequence monitoring point SOB1 is monitored. As a result of the monitoring, if there is no abnormality, PI=0 is set in step 20, and the photometry and exposure program EXC3 is started. When PI=2, processing F21 and F22 turn off the AF magnet and send out four reverse pulses. When PI=3, process F23, F2
4 turns the AF magnet 1/OFF and sends out 9 reverse pulses.
測光、露光プＯグラムＥＸＣ３は第４図に示すようにＰ
Ｉ＝Ｏ．．ＰＩ＝８およびＰＩ≠０、ＰＩ≠８て分岐し
、ＰＩｆ−０．．ＰＩ≠８はイリーガルファンクション
ｒ Ｌ Ｌとなり図示してないフローにより警報を送出
する。Ｉ） Ｉ ＝ Ｏのときは処理Ｆ２６でバワーホ
ール！・をＬにし、総ての動作を経了する。ＰＴ＝８の
ときは正常な動作であり、処理Ｆ２６Ｎ Ｆ２７％ Ｆ
２８− Ｆ２９− Ｆ３０％ Ｆ３＋でＡＦマグネッｌ
− Ｏ Ｆ Ｆ、測光、ＡＦマクネッｌ− Ｏ Ｎ、露
出動作、ＡＰマグネットＯＦＦ、初期位置まて逆転のシ
ーケンスを実行する。The photometry and exposure program EXC3 is as shown in Figure 4.
I=O. ．． PI=8 and PI≠0, PI≠8 and branches, PIf-0. ．． PI≠8 becomes an illegal function rLL and sends out an alarm according to a flow not shown. I) When I = O, power hole in process F26! - Set to L and complete all operations. When PT=8, it is normal operation and processing F26N F27% F
28- F29- F30% AF magnet at F3+
- Execute the sequence of OFF, photometry, AF lens ON, exposure operation, AP magnet OFF, initial position and reverse.
シーケンス監視点ＳＯＢ４は判断ボックスＦＨ４で判断
し、正常な場合は異常拘止防止ブロクラムＥＸＣ４を起
動する。異常な場合は処理ト゛３２、’Ｉ’ｌｌ断ボッ
クスＦａ３、処理Ｆ３４のフローてシーケンス監視点Ｓ
ＯＢ４の正常性を監視する。The sequence monitoring point SOB4 is judged by the judgment box FH4, and if it is normal, the abnormal arrest prevention block EXC4 is activated. If there is an abnormality, the flow of processing step 32, 'I'll disconnection box Fa3, and processing step F34 is followed by sequence monitoring point S.
Monitor the health of OB4.
異常拘止防止プログラムＥＸＣ４はサブルーチンＦ３ｓ
て逆転１、正転１パルスを送出し、第１図に示すラチヱ
ッ１・車７の第ｌの歯と係止レハー８の爪の噛み合わせ
を確実になるよう制御する。Abnormal restraint prevention program EXC4 is subroutine F3s
1 reverse rotation pulse and 1 forward rotation pulse are sent out, and control is performed so that the l-th tooth of the latch 1 wheel 7 shown in FIG.
フィルム送りプロクラムＥＸＣ５は処理Ｆ３６でフィル
ムを１コマ送り出し、処理３７てＰＩ二〇とし処理２５
ヘフローずる。The film advance program EXC5 advances one frame of film in process F36, processes 37, sets the PI to 20, and processes 25.
Heflo cheat.
［発明の作用コ
上記横成のカメラの自動焦点調節装置て測距プログラム
ＥＸＣ，からシーゲンス解析ブロクラムＡＮＬヘフロー
すると判断ボックスＦｌ｛＋で第５図に示すシーケンス
監視点ＳＯＢ１を監視ずる。[Operation of the Invention] When the automatic focus adjustment device of the above-mentioned Yokinari camera flows from the distance measurement program EXC to the Siegen analysis block program ANL, the sequence monitoring point SOB1 shown in FIG. 5 is monitored using the judgment box Fl{+.
シーケンス監視点ＳＯＢ１が正常なら処理Ｆ４て逆転３
パルヌを送出するので、駆動部材１の回転角は０，から
θ２となり処理Ｆ５てはＡＦマグネットがＯＮとなる。If sequence monitoring point SOB1 is normal, process F4 and reverse 3
Since PALNU is sent out, the rotation angle of the drive member 1 changes from 0 to θ2, and in process F5, the AF magnet is turned ON.
処理Ｆ６て正転３パルスを送出すると回転角θ，′て再
度シーケンス監視点Ｓ Ｏ Ｂ２になり、回転角０２か
ら８パルス目でシーケンス監視点ＳＯＢ３となる。回転
角はθ３となる。最終のシーケンス監視点ＳＯＩ′３４
は第４図の測光、露出プログラムＥｘＣ３の判断ボック
スＦＨ４て監視ずる。処理Ｆ３１て初１１１１ ｛ｉ７
置まで逆転してから品終シーケンス監視点Ｓ Ｏ Ｂ
４に至るフローをレンズリターン工程という。When three pulses of normal rotation are sent in process F6, the sequence monitoring point SOB2 is reached again at the rotation angle θ,', and the sequence monitoring point SOB3 is reached at the 8th pulse from the rotation angle 02. The rotation angle is θ3. Final sequence monitoring point SOI'34
is monitored using judgment box FH4 of photometry and exposure program ExC3 in FIG. Processing F31 first time 1111 {i7
After reversing to the position, the end-of-product sequence monitoring point S O B
The flow leading to step 4 is called the lens return process.
なお、回転角θ４が最大の回転角でこの部分は露出作動
工程で図示してないセクタが第１図の駆動部材１のセク
タ開閉カムで開かれた点である。Incidentally, the rotation angle θ4 is the maximum rotation angle, and this is the point where a sector (not shown) is opened by the sector opening/closing cam of the drive member 1 in FIG. 1 in the exposure operation process.
なお、上記実施例におけるホームスイッチは機械接点に
限定せずフォートカプラ等の半導体素子を用いてもよい
。また、駆動部材、距ｉｗ部材は直線上に形成してもよ
い。また、モータは起音波モータ等を用いてもよい。Note that the home switch in the above embodiment is not limited to a mechanical contact, and a semiconductor element such as a fort coupler may be used. Further, the driving member and the distance iw member may be formed on a straight line. Furthermore, a sonic motor or the like may be used as the motor.
［発明の効果コ
１３ ー
１４
本発明によるカメラの自動焦点調節装置は、正転、逆転
可能なモータと、前記モータにより作動される駆動部材
と、前記駆動部材に追従して作動し撮影レンズを初期位
置にセットシ、かつ繰出す距離部材と、前記距離部材を
所定の繰出し位置に拘止する距離部材係止機構と、前記
駆動部４オの作動監視点における前記駆動部材の位置を
確認し位置確認信号を出力する駆動部＋，１位置確認手
段と、前記初期位置にある前記距離部相の始動位置から
前記所定の繰出し位置で拘止されるまでのシーケンスを
解析する距離部材シーケンス解析手段で構成してあるの
で、シーケンス監視点て駆動部材の位置が確認でき、か
つ、異常動作が防止できる効果がある。また、距離部材
係止機構に係わる合焦動作ストロークを減少できる効果
がある。[Effects of the Invention 13 - 14 The automatic focusing device for a camera according to the present invention includes a motor capable of forward and reverse rotation, a driving member operated by the motor, and a driving member that operates in accordance with the driving member to move a photographic lens. The distance member that is set to the initial position and is fed out, the distance member locking mechanism that locks the distance member at a predetermined extended position, and the position of the drive member at the operation monitoring point of the drive unit 4o are confirmed and the position is drive unit +,1 position confirmation means for outputting a confirmation signal; and distance member sequence analysis means for analyzing a sequence from a starting position of the distance part phase at the initial position to being restrained at the predetermined extended position. Because of this structure, the position of the driving member can be confirmed from the sequence monitoring point, and abnormal operation can be prevented. Further, there is an effect that the focusing operation stroke related to the distance member locking mechanism can be reduced.
また、正転、逆転可能なモータと、前記モータにより作
動される駆動部材と、前記駆動部材材に追従して作動し
撮影レンズを初期位置にセットし、かつ繰出す距離部材
と、前記距離部材を所定の繰出し位置に拘止する距離部
材係止機構と、前記駆動部材の作動監視点における前記
駆動部材の位置を確認し位置確認信号を出力する駆動部
材位置確認手段と、前記初期位置にある前記距離部材の
始動位置から前記所定の繰出し位置で拘止されるまでの
シーケンスを解析する距離部材シーケンス解析手段と、
前記距離部材の初期位置における異常拘止を防止する距
Ｒ部材異常拘止防止手段とを備えてあるので距離部材の
異常拘止を防止できる。Further, a motor capable of forward and reverse rotation, a drive member operated by the motor, a distance member that operates to follow the drive member to set and extend the photographic lens to an initial position, and the distance member a distance member locking mechanism for locking the drive member at a predetermined extended position; a drive member position confirmation means for confirming the position of the drive member at the operation monitoring point of the drive member and outputting a position confirmation signal; distance member sequence analysis means for analyzing a sequence from a starting position of the distance member to being restrained at the predetermined extended position;
Since the distance member is provided with a distance R member abnormal restraint prevention means for preventing abnormal restraint in the initial position of the distance member, abnormal restraint of the distance member can be prevented.
第１図は本発明によるカメラの自動焦点調節装置の一実
施例を示す構成図、第２図は第１図に係わるブロック図
、第３図、第４図は第１図に係わるプログラムのシーケ
ンスチャート、第５図は第３図、第４図のプログラムの
動作を示すタイムチャート、第６図は従来のカメラの自
動焦点調節装置の構成図である。
１・・・・・・駆動部材
２・・・・・・基板
４・・・・・・ステップモータ
６・・・・・・距離部材
ＨＳ・・・・・・ホームスイッチ
（駆動部材位置確認手段）
ＡＮＬ・・・・・・シーケンス解析プログラム（距離部
材シーケンス解析手段）
ＥＸＣ４・・・・・・異常拘止防止プログラム（手段）
第１図
以上
４
４ａ
＋Ｔ 一FIG. 1 is a block diagram showing an embodiment of an automatic focus adjustment device for a camera according to the present invention, FIG. 2 is a block diagram related to FIG. 1, and FIGS. 3 and 4 are program sequences related to FIG. 1. FIG. 5 is a time chart showing the operation of the programs shown in FIGS. 3 and 4, and FIG. 6 is a configuration diagram of a conventional automatic focus adjustment device for a camera. 1... Drive member 2... Board 4... Step motor 6... Distance member HS... Home switch (driving member position confirmation means ) ANL... Sequence analysis program (distance member sequence analysis means) EXC4... Abnormal restraint prevention program (means)
Figure 1 and above 4 4a +T 1
Claims (1)
される駆動部材と、前記駆動部材に追従して作動し撮影
レンズを初期位置にセットし、かつ繰出す距離部材と、
前記距離部材を所定の繰出し位置に拘止する距離部材係
止機構と、前記駆動部材の作動監視点における前記駆動
部材の位置を確認し位置確認信号を出力する駆動部材位
置確認手段と、前記初期位置にある前記距離部材の始動
位置から前記所定の繰出し位置で拘止されるまでのシー
ケンスを解析する距離部材シーケンス解析手段とを備え
たことを特徴とするカメラの自動焦点調節装置。 ２、正転、逆転可能なモータと、前記モータにより作動
される駆動部材と、前記駆動部材材に追従して作動し撮
影レンズを初期位置にセットし、かつ繰出す距離部材と
、前記距離部材を所定の繰出し位置に拘止する距離部材
係止機構と、前記駆動部材の作動監視点における前記駆
動部材の位置を確認し位置確認信号を出力する駆動部材
位置確認手段と、前記初期位置にある前記距離部材の始
動位置から前記所定の繰出し位置で拘止されるまでのシ
ーケンスを解析する距離部材シーケンス解析手段と、前
記距離部材の初期位置における異常拘止を防止する距離
部材異常拘止防止手段とを備えたことを特徴とするカメ
ラの自動焦点調節装置。[Scope of Claims] 1. A motor capable of forward and reverse rotation, a driving member operated by the motor, and a distance member that operates following the driving member to set the photographing lens at the initial position and extend it. and,
a distance member locking mechanism for locking the distance member at a predetermined extended position; a drive member position confirmation means for confirming the position of the drive member at an operation monitoring point of the drive member and outputting a position confirmation signal; 1. An automatic focus adjustment device for a camera, comprising distance member sequence analysis means for analyzing a sequence from a starting position of the distance member at the predetermined extended position until the distance member is stopped at the predetermined extended position. 2. A motor capable of forward and reverse rotation, a driving member operated by the motor, a distance member that operates to follow the driving member to set and extend the photographic lens to an initial position, and the distance member. a distance member locking mechanism for locking the drive member at a predetermined extended position; a drive member position confirmation means for confirming the position of the drive member at the operation monitoring point of the drive member and outputting a position confirmation signal; Distance member sequence analysis means for analyzing the sequence from the starting position of the distance member until it is restrained at the predetermined extended position; and distance member abnormal retention prevention means for preventing abnormal retention at the initial position of the distance member. An automatic focus adjustment device for a camera, comprising:
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1166058A JP2739052B2 (en) | 1989-06-28 | 1989-06-28 | Camera auto focus device |
| US07/798,352 US5175577A (en) | 1989-06-28 | 1991-11-21 | Drive member sensing arrangement for an automatic focusing system of a camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1166058A JP2739052B2 (en) | 1989-06-28 | 1989-06-28 | Camera auto focus device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0329933A true JPH0329933A (en) | 1991-02-07 |
| JP2739052B2 JP2739052B2 (en) | 1998-04-08 |
Family
ID=15824190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1166058A Expired - Fee Related JP2739052B2 (en) | 1989-06-28 | 1989-06-28 | Camera auto focus device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2739052B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05148908A (en) * | 1991-11-28 | 1993-06-15 | Misawa Homes Co Ltd | Dwelling unit and connecting structure between dwelling units |
| JPH05171694A (en) * | 1991-12-05 | 1993-07-09 | Misawa Homes Co Ltd | Structure of high-and medium-rise building |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60195529A (en) * | 1984-03-19 | 1985-10-04 | Canon Inc | Stepping type lens barrel driving device |
| JPS62156634A (en) * | 1985-12-28 | 1987-07-11 | Ricoh Co Ltd | Lens driving device |
| JPH01252910A (en) * | 1988-04-01 | 1989-10-09 | Copal Co Ltd | Method of adjusting lens extending mechanism |
| JPH01152314U (en) * | 1988-04-01 | 1989-10-20 |
-
1989
- 1989-06-28 JP JP1166058A patent/JP2739052B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60195529A (en) * | 1984-03-19 | 1985-10-04 | Canon Inc | Stepping type lens barrel driving device |
| JPS62156634A (en) * | 1985-12-28 | 1987-07-11 | Ricoh Co Ltd | Lens driving device |
| JPH01252910A (en) * | 1988-04-01 | 1989-10-09 | Copal Co Ltd | Method of adjusting lens extending mechanism |
| JPH01152314U (en) * | 1988-04-01 | 1989-10-20 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05148908A (en) * | 1991-11-28 | 1993-06-15 | Misawa Homes Co Ltd | Dwelling unit and connecting structure between dwelling units |
| JPH05171694A (en) * | 1991-12-05 | 1993-07-09 | Misawa Homes Co Ltd | Structure of high-and medium-rise building |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2739052B2 (en) | 1998-04-08 |
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