JPS6119975B2 - - Google Patents
Info
- Publication number
- JPS6119975B2 JPS6119975B2 JP52102733A JP10273377A JPS6119975B2 JP S6119975 B2 JPS6119975 B2 JP S6119975B2 JP 52102733 A JP52102733 A JP 52102733A JP 10273377 A JP10273377 A JP 10273377A JP S6119975 B2 JPS6119975 B2 JP S6119975B2
- Authority
- JP
- Japan
- Prior art keywords
- aperture
- switch
- focusing device
- automatic
- automatic focusing
- 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 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Landscapes
- Diaphragms For Cameras (AREA)
- Automatic Focus Adjustment (AREA)
- Exposure Control For Cameras (AREA)
- Focusing (AREA)
Description
【発明の詳細な説明】
本発明は自動焦点装置を有するカメラに関し、
更に詳しくは自動絞り装置を有するカメラに於て
自動焦点装置の作動を能率化可能となしたカメラ
に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a camera with an autofocus device,
More specifically, the present invention relates to a camera having an automatic aperture device, in which the operation of the automatic focusing device can be streamlined.
従来無限遠乃至近距離を反復走査する為の固定
ミラー及び走査ミラーの受光量をフオーカスモジ
ユールによつて光電変換して得られる出力及び距
離調節環の調節位置検出スイツチの出力信号を走
査ミラーの１サイクルの走査に同期する同期スイ
ツチの出力を入力するロジツク回路に入力して、
前記１サイクル内に於ける前記フオーカスモジユ
ールの出力ピーク値と前記検出スイツチの出力と
の差によつてサーボ駆動回路を駆動して距離調節
環を作動させるサーボモーターを駆動して自動焦
点調節を行う自動焦点装置は知られている。 Conventionally, the output obtained by photoelectrically converting the amount of light received by a fixed mirror and a scanning mirror for repeatedly scanning from infinite to short distances by a focus module and the output signal of the adjustment position detection switch of the distance adjustment ring are used as a scanning mirror. The output of the synchronization switch synchronized with one cycle of scanning is input to the input logic circuit.
Automatic focus adjustment is performed by driving a servo motor that drives a servo drive circuit to operate a distance adjustment ring based on the difference between the output peak value of the focus module and the output of the detection switch within the one cycle. Autofocus devices that perform this are known.
しかしながら従来のこの種の装置に於てはＦ値
が大きくなると被写界深度が深くなりコンパクト
なカメラ特に焦点距離が短いレンズを有するカメ
ラに於ては常焦点位置（例えば５ｍ）でほとんど
の被写界に対応出来、わざわざ自動焦点装置を作
動させて距離調節を行う必要がないにもかかわら
ず、自動焦点装置は自動的に作動を続け、無駄な
作動を免れない。 However, in conventional devices of this kind, the larger the F number, the deeper the depth of field, and in compact cameras, especially cameras with short focal length lenses, most of the subject is at the normal focal position (for example, 5 m). Even though the camera can adapt to the field of view and there is no need to operate the autofocus device to adjust the distance, the autofocus device continues to operate automatically, resulting in unnecessary operation.
本発明は上述の点に鑑み、絞り値が常焦点撮影
を可能となす値以上の場合にレンズを常焦点位置
に設定した状態で自動焦点装置を不作動となすと
共に絞り値が所定の値以下になると自動焦点装置
を作動させるようになすことにより余分な焦点調
節作動を排除したカメラを提供することを目的と
する。 In view of the above-mentioned points, the present invention disables the autofocus device with the lens set at the normal focus position when the aperture value is greater than the value that enables normal focus photography, and the aperture value is lower than a predetermined value. It is an object of the present invention to provide a camera that eliminates unnecessary focus adjustment operations by operating an automatic focus device.
本発明は常焦点撮影を可能とする所定絞り値で
スイツチングするスイツチを設け、このスイツチ
により自動焦点装置を不作動となす如く制御する
ように構成したことを特徴とする。 The present invention is characterized in that a switch is provided for switching at a predetermined aperture value that enables normal focus photography, and the switch is configured to control the automatic focusing device so as to disable it.
上述の如くなすことにより本発明は電力消費を
低消費となすように構成され、余分な駆動音も少
なくなり特にコンパクトなカメラ及びシネカメラ
において優れた効果がある。 By doing as described above, the present invention is configured to reduce power consumption and reduce unnecessary driving noise, which is particularly effective in compact cameras and cine cameras.
以下に本発明による実施例を添付図面を参照し
て説明する。 Embodiments of the present invention will be described below with reference to the accompanying drawings.
図面に於て簡単の為に自動焦点装置は電源１
と、フオーカスモジユール２とを含む如く示され
ている。この回路に於ては常閉性スイツチ３が開
放されると自動焦点装置が不作動になされるよう
になつている。 In the drawing, the automatic focus device is powered by 1 for simplicity.
and a focus module 2. In this circuit, when the normally closed switch 3 is opened, the automatic focusing device is deactivated.
対物レンズの絞りは絞り羽根４を含み、これら
の絞り羽根４は公知の自動絞り装置５のサーボモ
ーター６により制御されて、適正露出が得られる
ようになつている。 The aperture of the objective lens includes aperture blades 4, and these aperture blades 4 are controlled by a servo motor 6 of a known automatic aperture device 5 to obtain proper exposure.
この絞り羽根４の絞り値はサーボモーター６に
連動する連結レバー７を経て絞り指針８を有する
指針レバー９に連動され、指針８の動きにより絞
り目盛１０によつて絞り値が表示されるようにな
つている。 The aperture value of the aperture blades 4 is linked to a pointer lever 9 having an aperture pointer 8 via a connecting lever 7 linked to a servo motor 6, and the aperture value is displayed on an aperture scale 10 by the movement of the pointer 8. It's summery.
本発明の特徴により前述のスイツチ３は絞り指
針レバー９と協働するように配置され、絞り羽根
４が前述の常焦点撮影を可能とする所定絞り値例
えばF5、６に達した時に指針レバー９に対して
指針８が当接してスイツチ３を開放させて、その
際にレンズを常焦点位置例えば５ｍに設定した後
自動焦点装置を不作動となすように自動焦点装置
の回路が構成されている。 According to a feature of the present invention, the above-mentioned switch 3 is arranged to cooperate with the aperture pointer lever 9, and when the aperture blades 4 reach a predetermined aperture value, for example, F5, 6, which enables the above-mentioned normal focus photography, the pointer lever 9 The circuit of the automatic focusing device is configured so that the pointer 8 comes into contact with the lens to open the switch 3, and at that time, the lens is set to a normal focal position, for example, 5 m, and then the automatic focusing device is deactivated. .
従つて本発明によれば常焦点撮影可能の所定絞
り値以上では自動焦点装置は作動せず、上述の如
く電力消費の節減、駆動音の低下を可能となし得
られる効果が大きい。 Therefore, according to the present invention, the autofocus device does not operate above a predetermined aperture value that enables normal focus photography, and as described above, it is possible to save power consumption and reduce drive noise, which is a great effect.
添付図面は本発明による自動焦点装置の概略的
説明図。
１……電源、２……フオーカスモジユール、３
……スイツチ、４……絞り羽根、５……自動絞り
装置、６……サーボモーター、７……連結レバ
ー、８……絞り値指針、９……指針レバー、１０
……絞り目盛。
The accompanying drawings are schematic illustrations of an automatic focusing device according to the present invention. 1...Power supply, 2...Focus module, 3
... Switch, 4 ... Aperture blade, 5 ... Automatic aperture device, 6 ... Servo motor, 7 ... Connection lever, 8 ... Aperture value pointer, 9 ... Pointer lever, 10
...Aperture scale.
Claims (1)
て、絞りが常焦点撮影を可能となす所定絞り値に
達した時に絞り作動部材に当接して開かれる常閉
性スイツチを有し、このスイツチが自動焦点装置
に接続されていて、該スイツチの開放により常焦
点位置にレンズを設定した状態で自動焦点装置が
不作動となされる如く構成されていることを特徴
とする自動焦点装置を有するカメラ。1. A camera with an automatic iris that has an automatic focusing device has a normally closed switch that is opened by contacting the iris operating member when the iris reaches a predetermined aperture value that enables normal focus photography, and this switch is automatically 1. A camera having an automatic focusing device, connected to the focusing device, and configured such that when the switch is opened, the automatic focusing device is inactivated with the lens set at the normal focus position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10273377A JPS5436929A (en) | 1977-08-29 | 1977-08-29 | Camera with automatic focus device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10273377A JPS5436929A (en) | 1977-08-29 | 1977-08-29 | Camera with automatic focus device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5436929A JPS5436929A (en) | 1979-03-19 |
| JPS6119975B2 true JPS6119975B2 (en) | 1986-05-20 |
Family
ID=14335438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10273377A Granted JPS5436929A (en) | 1977-08-29 | 1977-08-29 | Camera with automatic focus device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5436929A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5654416A (en) * | 1979-10-12 | 1981-05-14 | Hitachi Ltd | Automatic focusing device of camera |
| JPS56110920A (en) * | 1980-02-07 | 1981-09-02 | Konishiroku Photo Ind Co Ltd | Automatic focus adjustor |
| JPS56116018A (en) * | 1980-02-19 | 1981-09-11 | Konishiroku Photo Ind Co Ltd | Automatic focusing regulator |
| JPS59202437A (en) * | 1983-05-04 | 1984-11-16 | Fuji Photo Film Co Ltd | Autofocus camera incorporating strobe |
| JPS59204012A (en) * | 1983-05-06 | 1984-11-19 | Fuji Photo Film Co Ltd | Auto focus camera |
| JPS60240773A (en) * | 1984-05-14 | 1985-11-29 | Kobe Steel Ltd | Surface-treated steel stock having excellent corrosion resistance |
-
1977
- 1977-08-29 JP JP10273377A patent/JPS5436929A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5436929A (en) | 1979-03-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4561429A (en) | Flashlight control apparatus for endoscope | |
| EP0948198A2 (en) | Digital camera and methods of focusing the same | |
| JPS57158826A (en) | Automatic focusing device for stereoscopical microscope | |
| JPS6119975B2 (en) | ||
| US5659807A (en) | Vibration compensation camera having reduced power consumption in a self-timer mode and a bulb mode | |
| US4283131A (en) | Manual focus setting apparatus for photographic camera having automatic focus adjusting mechanism | |
| US4238154A (en) | Camera having too close/too far indication | |
| US4512646A (en) | Acoustic indicating device for cameras | |
| JPS6444428A (en) | Zoom camera | |
| JPH0449089B2 (en) | ||
| JPS6442639A (en) | Automatic focusing system | |
| JPS55127524A (en) | Automatic focus control unit | |
| JPS5812162Y2 (en) | Automatic focus device operation regulation device | |
| US4460258A (en) | Lens barrel containing an automatic focus matching device therein | |
| JPS55149575A (en) | Television camera unit | |
| US4957354A (en) | Optical apparatus for producing a special photographic effect | |
| US4422739A (en) | Auto focus camera | |
| JPS5822168Y2 (en) | Focus lock device in automatic focus adjustment device | |
| US4459001A (en) | Automatic focusing system with interrupt function | |
| KR910005236Y1 (en) | Optical apparatus of video camera | |
| JPH04281435A (en) | Converter | |
| JPS6398637A (en) | Automatic focus control camera | |
| IE782563L (en) | Focus control system | |
| JPH01205116A (en) | Automatic focusing adjuster for camera | |
| JPS6323695Y2 (en) |