JP2762460B2 - Camera focus adjustment device - Google Patents
Camera focus adjustment deviceInfo
- Publication number
- JP2762460B2 JP2762460B2 JP63118928A JP11892888A JP2762460B2 JP 2762460 B2 JP2762460 B2 JP 2762460B2 JP 63118928 A JP63118928 A JP 63118928A JP 11892888 A JP11892888 A JP 11892888A JP 2762460 B2 JP2762460 B2 JP 2762460B2
- Authority
- JP
- Japan
- Prior art keywords
- distance measurement
- camera
- vertical position
- posture
- focus
- 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 - Lifetime
Links
Landscapes
- Focusing (AREA)
- Automatic Focus Adjustment (AREA)
Description
【発明の詳細な説明】 （発明の利用分野） 本発明は、カメラの焦点調節のための装置の改良に関
するものである。Description: FIELD OF THE INVENTION The present invention relates to an improvement in a device for adjusting the focus of a camera.
（発明の背景） 従来、ほとんどのカメラは撮影画面の中央部一ケ所で
しか測距できないものばかりであった。このようなカメ
ラの場合、例えば撮影画面の中央部に備えられた測距枠
（測距領域を示す枠）を位置以外に主被写体が存在する
場合は、まず主被写体を中央部で測距してその測距値を
プリセットし（AF機能を停止させ）、意図するフレーミ
ングを行った後にレリーズを行うというAFロック機能を
使わざるを得なかった。(Background of the Invention) Conventionally, most cameras can only measure a distance at a central portion of a shooting screen. In the case of such a camera, for example, when a main subject exists in a position other than the position of a distance measurement frame (a frame indicating a distance measurement area) provided at the center of the shooting screen, the main object is first measured at the center. I had to use the AF lock function that presets the distance measurement value (stops the AF function) and releases the camera after performing the intended framing.
しかし上記従来カメラでは、前記AFロック機能を使用
するには、カメラの操作に慣れている人でないとレリー
ズ位置までシャッタ釦を押し下げてしまったり、AFロッ
ク機能がうまく動作しておらずピントのぼけた写真とな
ってしまうケースが度々あった。特にカメラを縦位置
（正位置状態からどちらかに90°回転させた状態）に構
えてフレーミングを行うような場合、撮影画面中央部よ
りも縦位置画面の中央上側に主たる被写体のピントを合
せたい部分が来る場合が比較的多いため、撮影画面中央
部分でしか測距を行うことができないと、前述のように
煩わしいAFロックを行わなければならない不都合があ
る。However, in the above conventional camera, in order to use the AF lock function, if you are not used to operating the camera, you must press the shutter button down to the release position or the AF lock function does not work well and the focus is out of focus In many cases, it became a photograph. Especially when framing is performed with the camera held in the vertical position (rotated 90 degrees from the normal position), it is desirable to focus the main subject on the upper center of the vertical screen rather than the center of the shooting screen Since there are relatively many portions, if the distance measurement can be performed only in the central portion of the shooting screen, there is a disadvantage that the troublesome AF lock must be performed as described above.
（発明の目的） 本発明の目的は、撮影者に煩わしい操作を強要するこ
となく、カメラの姿勢に関係なくピントのあった写真を
与えることのできるカメラの焦点調節用装置を提供する
ことである。(Object of the Invention) An object of the present invention is to provide an apparatus for adjusting the focus of a camera, which can give a focused photograph regardless of the posture of the camera without forcing the photographer to perform a troublesome operation. .
（発明の特徴） 上記目的を達成するために、本発明は、焦点調節のた
めの信号を形成するための信号形成手段と、シャッタレ
リーズ操作部材の操作に応答してカメラの姿勢状態を検
出する検出手段と、該検出手段の検出結果に従って前記
信号形成手段の動作を制御する制御手段とを有するカメ
ラの焦点調節用装置とするものである。(Features of the Invention) In order to achieve the above object, the present invention detects a posture state of a camera in response to an operation of a shutter release operating member and a signal forming means for forming a signal for focus adjustment. According to another aspect of the present invention, there is provided an apparatus for adjusting a focus of a camera, comprising: a detection unit; and a control unit that controls an operation of the signal forming unit according to a detection result of the detection unit.
（発明の実施例） 以下、本発明を図示の実施例に基づいて詳細に説明す
る。Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.
第２図（ａ）は３点の測距枠を有したカメラの横位置
で構えた時のファインダ画面（撮影画面）内における被
写体と各測距枠を示した図であり、第２図（ｂ）は縦位
置で構えた時のファインダ画面内における被写体と各測
距枠を示した図である。FIG. 2A is a diagram showing a subject and each ranging frame in a finder screen (photographing screen) when the camera having the three ranging frames is held at a horizontal position, and FIG. FIG. 4B is a diagram showing a subject and each ranging frame in the finder screen when the camera is held in a vertical position.
カメラは多くの場合スナップ写真や記念写真など人物
を撮る場合が多い。そこで、例えばファインダを横位置
に構えた場合、撮りたい被写体のピントを合せたい部分
がファインダの中央部にくるか或は他の部分にくるかは
特定しがたいのに対して、ファインダを縦位置II（縦位
置Ｉは測距枠１が、縦位置IIは測距枠３が画面上方に来
る構え方とする）に構えた場合第２図（ｂ）の様に人物
が中央の縦の位置にきて、ピントの合せたい人物の顔は
ファインダ上部に来る。つまりピントを合せたい位置が
ファインダを横位置に構えるが縦位置Ｉ或はIIに構える
かで違ってくる場合が多い。Cameras often take pictures of people, such as snapshots and commemorative photos. Therefore, for example, when the finder is held in the horizontal position, it is difficult to specify whether the portion of the subject to be shot comes to the center of the finder or another portion, whereas the finder is set to the vertical position. When the camera is held at the position II (the vertical position I has the distance measurement frame 1 and the vertical position II has the distance measurement frame 3 positioned above the screen), as shown in FIG. When you are in position, the face of the person you want to focus on will be at the top of the viewfinder. In other words, the position at which the user wants to focus is positioned at the horizontal position, but often differs depending on whether the finder is positioned at the vertical position I or II.
第２図ではファインダを横位置で構えた場合、中央の
測距枠２が選択され、選択されていない測距枠1,3と区
別するための手段を備えている。例えば測距枠をファイ
ンダ上で光らせるスーパーインポーズ表示を行うことに
よって可能となる。このスーパーインポーズ表示はLED
やELなどの発光素子により行うことができるが、このス
ーパーインポーズ表示に関して既に各種の提案等により
開示されているものをそのまま適用可能であるので、こ
こではこれ以上の説明は割愛する。In FIG. 2, when the finder is held in the horizontal position, the center ranging frame 2 is selected, and a means for distinguishing from the unselected ranging frames 1 and 3 is provided. For example, this can be achieved by performing a superimposed display in which the distance measurement frame is illuminated on the viewfinder. This superimpose display is LED
The display can be performed by a light emitting element such as an EL display or an EL. However, since the superimposed display already disclosed by various proposals and the like can be applied as it is, further description is omitted here.
このスーパーインポーズ表示によりピントを合せたい
測距枠を光らせる訳だが、前述した様に横位置で構えた
場合と縦位置で構えた場合で選択される測距枠の位置が
同一であると、横位置と縦位置のどちらかで測距位置を
変更し測距し直すことになる。そこで、横位置に構えた
時と縦位置に構えた時での姿勢差を検出し、その検出結
果を基にしてその測距位置のプリセット位置を変えてお
くことによって、横位置、縦位置の構え方の差により、
測距位置をその都度いちいち変更したり、前述のAFロッ
クを行う必要もなくなる。前述の様に姿勢差を検出する
ためには、カメラ自身が姿勢検出手段を備えている必要
がある。姿勢差を検出するのは一般的に重り、水銀など
を利用した重力検出が知られている。第３図は重力検出
部材の一例である。切片６の先端は摩擦を少なくするた
めマイクロブラシ6aになっていて、重り８により回転軸
７のまわりを回転する。又回転軸７のまわりにマイクロ
ブラシ6aと等距離の同心円状にパターン9,10,11があ
り、カメラを横位置に構えた時にはマイクロブラシ6aと
パターン９が導通して横位置信号が発生し、カメラを縦
位置I,IIに構えた時にはマイクロブラシ6aとパターン1
0,11とが導通して縦位置Ｉ信号，縦位置信号IIが発生す
る。This superimposed display causes the focus detection frame to be focused on, but as described above, if the position of the focus detection frame selected when the camera is held in the horizontal position and in the vertical position is the same, The distance measurement position is changed in either the horizontal position or the vertical position, and the distance measurement is performed again. Therefore, by detecting the difference in attitude between the horizontal position and the vertical position, and by changing the preset position of the distance measurement position based on the detection result, the horizontal position and the vertical position Due to differences in attitude,
It is no longer necessary to change the distance measurement position each time or to perform the AF lock described above. As described above, in order to detect a posture difference, the camera itself needs to have a posture detecting means. It is generally known to detect an attitude difference by gravity detection using weight, mercury or the like. FIG. 3 is an example of a gravity detecting member. The tip of the section 6 is a microbrush 6 a for reducing friction, and is rotated around a rotation axis 7 by a weight 8. Also, there are patterns 9, 10, 11 concentric with the microbrush 6a around the rotation axis 7, and when the camera is held in the horizontal position, the microbrush 6a and the pattern 9 conduct and a horizontal position signal is generated. When the camera is held in the vertical position I, II, the micro brush 6a and the pattern 1
0 and 11 are conducted to generate a vertical position signal I and a vertical position signal II.
第１図は上記のことを実現するためのブロック図であ
り、該図において、101,102,103は前記測距枠1,2,3内の
領域での測距を行い、それぞれ測距情報Ａ1,A2,A3を出
力する測距回路、104はレリーズ釦の半押しによりオン
するスイッチsw1のオン時に、後述する姿勢検出スイッ
チswcの状態を保持するラッチ回路、105は各種回路の制
御を司るマイクロコンピュータ等の制御回路、106は表
示駆動回路、107〜109は前記測距枠1,2,3の表示を行う
表示器、110は制御回路105よりのレンズ駆動量に従って
不図示の撮影レンズを合焦位置へ移動させるレンズ駆動
回路、sw2はレリーズ釦の全押しによりオンするスイッ
チ、swcは第３図に示した重力検出部材に相当する姿勢
検出スイッチで、前述のようにカメラの姿勢に応じて横
位置信号，縦位置Ｉ信号或は縦位置II信号が発生する。FIG. 1 is a block diagram for realizing the above. In FIG. 1, reference numerals 101, 102, and 103 perform distance measurement in areas within the distance measurement frames 1, 2, and 3, respectively, and distance measurement information A 1 , A 2, distance measuring circuit for outputting the a 3, the micro 104 during on of the switch sw1 of turned on by half pressing of the release button, the latch circuit for holding the state of the later-described attitude detection switch swc, 105 is for controlling the various circuits A control circuit such as a computer, 106 is a display drive circuit, 107 to 109 are displays for displaying the distance measuring frames 1, 2, and 3, and 110 is a lens for driving a lens (not shown) according to a lens drive amount from the control circuit 105. The lens drive circuit for moving to the focal position, sw2 is a switch that is turned on by fully pressing the release button, and swc is a posture detection switch corresponding to the gravity detection member shown in FIG. 3, and according to the posture of the camera as described above. A horizontal position signal, vertical position I signal or vertical position II signal is generated. To.
次に第４図のフローチャートを用いて動作説明を行
う。Next, the operation will be described with reference to the flowchart of FIG.
レリーズ釦の半押しがなされスイッチsw1がオンする
と、制御回路105はラッチ回路104に姿勢検出スイッチsw
cにて検出されているこの時のカメラの姿勢情報を保持
させる。これは急激なカメラの姿勢変化による表示等の
不都合を排除するためである。そしてこの時の姿勢情報
が横位置であるか縦位置Ｉ或はIIであるかの判断を行
う。その結果横位置であった場合には、測距回路102に
測距指示を行い、つまり第２図の測距枠２内での測距を
行わせ、次に表示駆動回路106を介して第２図（ａ）に
示すように表示器108を点灯させ、この時の測距位置を
スーパーインポーズ表示により撮影者に知らしめる。そ
の後前記測距回路102よりの測距情報Ａ2に基づいてレン
ズ駆動量を算出し、レンズ駆動回路110を介して不図示
の撮影レンズを合焦位置まで移動させる。When the release button is half-pressed and the switch sw1 is turned on, the control circuit 105 causes the latch circuit 104 to output the posture detection switch sw.
The posture information of the camera at this time detected in c is held. This is to eliminate inconveniences such as display caused by a sudden change in the posture of the camera. Then, it is determined whether the posture information at this time is the horizontal position or the vertical position I or II. If the horizontal position is found, the distance measurement circuit 102 is instructed to perform distance measurement, that is, the distance measurement is performed within the distance measurement frame 2 in FIG. 2 The display 108 is turned on as shown in FIG. 2A, and the distance measurement position at this time is notified to the photographer by a superimposed display. Then the calculated lens drive amount based on the distance measurement information A 2 than distance measuring circuit 102, via the lens drive circuit 110 moves the photographing lens (not shown) to an in-focus position.
この時の姿勢情報が縦位置IIであった場合には、測距
回路103に測距指示を行い、つまり第２図の測距枠３内
での測距を行わせ、次に表示駆動回路106を介して第２
図（ｂ）に示すように表示器109を点灯させ、この時の
測距位置を撮影者に知らしめる。その後前記測距回路10
3よりの測距情報Ａ3に基づいてレンズ駆動量を算出し、
レンズ駆動回路110を介して不図示の撮影レンズを合焦
位置まで移動させる。If the posture information at this time is the vertical position II, a distance measurement instruction is issued to the distance measurement circuit 103, that is, the distance measurement within the distance measurement frame 3 in FIG. Second through 106
As shown in FIG. 7B, the display 109 is turned on to inform the photographer of the distance measurement position at this time. Then the distance measuring circuit 10
Calculates a lens drive amount based on the distance measurement information A 3 than 3,
The photographic lens (not shown) is moved to the in-focus position via the lens driving circuit 110.
また、この時の姿勢情報が縦位置Ｉであった場合に
は、測距回路101に測距指示を行い、つまり第２図の測
距枠１内での測距を行わせ、次に表示駆動回路106を介
して表示器107を点灯させ、この時の測距位置を撮影者
に知らしめる。その後前記測距回路101よりの測距情報
Ａ1に基づいてレンズ駆動量を算出し、レンズ駆動回路1
10を介して不図示の撮影レンズを合焦位置まで移動させ
る。If the posture information at this time is the vertical position I, the distance measuring circuit 101 is instructed to measure the distance, that is, the distance is measured within the distance measuring frame 1 in FIG. The display 107 is turned on via the drive circuit 106 to notify the photographer of the distance measurement position at this time. Then calculates the lens drive amount based on the distance measurement information A 1 than the distance measuring circuit 101, the lens drive circuit 1
The photographing lens (not shown) is moved to the in-focus position via 10.
その後レリーズ釦の全押しがなされてスイッチsw2が
オンすることにより、公知の露光動作等が行われる。Thereafter, when the release button is fully pressed and the switch sw2 is turned on, a known exposure operation or the like is performed.
第５図は本発明の他の実施例の動作を示すフローチャ
ートであり、第４図実施例と異なる部分は、まず測距回
路101〜103それぞれに測距指示を行い、これにより得ら
れるそれぞれの測距情報Ａ1,A2,A3を一旦レジスタRG1,R
G2,RG3に記憶しておき、その後検出したカメラの姿勢情
報に応じて表示器107〜109のいずれかを点灯させると共
に、この表示位置に対応する測距情報Ａ1〜Ａ3に基づい
て、すなわち前記レジスタRG1〜RG3の内容に基づいてレ
ンズ駆動量を算出するようにした点である。FIG. 5 is a flow chart showing the operation of another embodiment of the present invention. The difference from the embodiment of FIG. 4 is that a distance measurement instruction is first given to each of the distance measurement circuits 101 to 103, and each of the obtained distance measurement circuits is obtained. The ranging information A 1 , A 2 , A 3 is temporarily stored in registers RG 1, R
G2, RG3 is stored in, the turning on one of the indicators 107 to 109 in accordance with the then detected posture information of the camera, based on the distance measurement information A 1 to A 3 corresponding to the display position, That is, the lens drive amount is calculated based on the contents of the registers RG1 to RG3.
本実施例によれば、カメラの姿勢が横位置である縦位
置であるかの検出を行い、横位置であった場合にはピン
トの合せられる頻度の高い中央の測距領域を、縦位置で
あった場合にはその時の撮影画面の上部にくる測距領域
を測距ポイントとして選択するようにしているので、従
来のようにAFロックが全く不要となり、誤操作等を行う
ことが激減し、ピントのぼけた写真となってしまうこと
が殆どなくなる。According to the present embodiment, it is detected whether the posture of the camera is a vertical position, which is a horizontal position, and if the camera is in a horizontal position, a center ranging area that is frequently focused is set to a vertical position. If there is, the distance measurement area at the top of the shooting screen at that time is selected as the distance measurement point, so there is no need for AF lock at all as before, and there is a sharp reduction in erroneous operations etc. There is almost no blurred photo.
また、撮影画面内での測距位置を表示するようにした
ため、どの部分の測距が行われているかを知ることがで
き、使い勝手の良いカメラとすることができる。Further, since the distance measurement position in the photographing screen is displayed, it is possible to know which part of the distance measurement is being performed, and it is possible to provide a user-friendly camera.
（発明と実施例の対応） 図示実施例において、制御回路105のレンズ駆動量を
算出するステップを行う部分が本発明の信号形成手段
に、姿勢検出スイッチswc及びラッチ回路104が検出手段
に、制御回路105の姿勢情報を判断するステップを行う
部分が制御手段に、それぞれ相当する。(Correspondence between the Invention and the Embodiment) In the illustrated embodiment, the part of the control circuit 105 that performs the step of calculating the lens driving amount is controlled by the signal forming means of the present invention, The part that performs the step of determining the posture information of the circuit 105 corresponds to the control means.
（変形例） 本実施例では、撮影画面内に３つの測距枠（測距領
域）を備えたカメラについて述べたが、これに限定され
るものではなく、例えば第６図に示すように５つの測距
領域を有するものであってもよい。そしてこの場合第６
図のように縦位置Ｉに構えられた際には、撮影画面の上
部にくる測距枠1a,1bの測距情報に基づいてレンズ駆動
制御が行われるようにしても良い。さらに、本発明はカ
メラの姿勢に応答してカメラに適した領域の測距情報が
自動的に選択されるようなものであればどの様なもので
あっても良い。(Modification) In the present embodiment, a camera having three ranging frames (ranging areas) in a shooting screen has been described. However, the present invention is not limited to this. For example, as shown in FIG. It may have one ranging area. And in this case the sixth
When the camera is held at the vertical position I as shown in the figure, the lens drive control may be performed based on the distance measurement information of the distance measurement frames 1a and 1b located at the top of the shooting screen. Further, the present invention may be of any type as long as the distance measurement information of an area suitable for the camera is automatically selected in response to the attitude of the camera.
（発明の効果） 以上説明したように、本発明によれば、撮影者に煩わ
しい操作を強要することなく、カメラの姿勢に関係なく
ピントのあった写真を与えることができる。また、シャ
ッタレリーズ操作部材の操作に応答して本当に必要な時
だけカメラの姿勢状態検出のために電力が消費されるこ
とによって、電力消費を極力小さくすることができる。(Effects of the Invention) As described above, according to the present invention, a focused photograph can be provided regardless of the posture of the camera without forcing the photographer to perform a troublesome operation. In addition, power is consumed for detecting the posture of the camera only when it is really necessary in response to the operation of the shutter release operation member, so that power consumption can be reduced as much as possible.
第１図は本発明の一実施例を示すブロック図、第２図
（ａ）（ｂ）は同じくカメラを横位置或は縦位置に構え
た場合の各測距領域と被写体との関係を示す図、第３図
は同じくカメラの姿勢を重力により検出する例を示す
図、第４図は本発明の第１の実施例の動作を示すフロー
チャート、第５図は本発明の第２の実施例の動作を示す
フローチャート、第６図は撮影画面内に５つの測距領域
を設けた本発明の他の例を示す図である。 ６……切片、７……回転軸、８……重り、９〜11……パ
ターン、101〜103……測距回路、105……制御回路、106
……表示駆動回路、107〜109……表示器、swc……姿勢
検出スイッチ。FIG. 1 is a block diagram showing an embodiment of the present invention, and FIGS. 2 (a) and 2 (b) show the relationship between each ranging area and a subject when the camera is held in a horizontal position or a vertical position. FIG. 3, FIG. 3 is a diagram showing an example of detecting the posture of the camera by gravity, FIG. 4 is a flowchart showing the operation of the first embodiment of the present invention, and FIG. 5 is a second embodiment of the present invention. FIG. 6 is a view showing another example of the present invention in which five distance measurement areas are provided in the photographing screen. 6 ... intercept, 7 ... rotating axis, 8 ... weight, 9-11 ... pattern, 101-103 ... distance measuring circuit, 105 ... control circuit, 106
...... Display drive circuit, 107-109 ...... Display, swc ...... Position detection switch.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 鈴木 謙二 神奈川県川崎市高津区下野毛770番地 キヤノン株式会社玉川事業所内 (56)参考文献 特開 昭62−148936（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) G02B 7/00 G03B 3/00──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Kenji Suzuki 770 Shimonoge, Takatsu-ku, Kawasaki-shi, Kanagawa Prefecture Tamagawa Works of Canon Inc. (56) References JP-A-62-148936 (JP, A) (58) Investigation Field (Int.Cl. 6 , DB name) G02B 7/00 G03B 3/00
Claims (1)
号形成手段と、シャッタレリーズ操作部材の操作に応答
してカメラの姿勢状態を検出する検出手段と、該検出手
段の検出結果に従って前記信号形成手段の動作を制御す
る制御手段とを有することを特徴とするカメラの焦点調
節用装置。1. A signal forming means for forming a signal for focus adjustment, a detecting means for detecting a posture state of a camera in response to an operation of a shutter release operating member, and the detecting means according to a detection result of the detecting means. A control device for controlling the operation of the signal forming device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63118928A JP2762460B2 (en) | 1988-05-16 | 1988-05-16 | Camera focus adjustment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63118928A JP2762460B2 (en) | 1988-05-16 | 1988-05-16 | Camera focus adjustment device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01288833A JPH01288833A (en) | 1989-11-21 |
| JP2762460B2 true JP2762460B2 (en) | 1998-06-04 |
Family
ID=14748675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63118928A Expired - Lifetime JP2762460B2 (en) | 1988-05-16 | 1988-05-16 | Camera focus adjustment device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2762460B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5264889A (en) * | 1990-04-17 | 1993-11-23 | Minolta Camera Kabushiki Kaisha | Apparatus having an automatic focus detecting device |
| JP4593805B2 (en) * | 2001-02-09 | 2010-12-08 | キヤノン株式会社 | Auto focus camera |
| JP4594402B2 (en) * | 2008-02-08 | 2010-12-08 | キヤノン株式会社 | Auto focus camera |
| JP5458530B2 (en) * | 2008-08-29 | 2014-04-02 | 株式会社ニコン | camera |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62148936A (en) * | 1985-12-23 | 1987-07-02 | Canon Inc | Camera provided with auto-focusing device |
-
1988
- 1988-05-16 JP JP63118928A patent/JP2762460B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01288833A (en) | 1989-11-21 |
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