JPH0314632U - - Google Patents

Info

Publication number
JPH0314632U
JPH0314632U JP7422789U JP7422789U JPH0314632U JP H0314632 U JPH0314632 U JP H0314632U JP 7422789 U JP7422789 U JP 7422789U JP 7422789 U JP7422789 U JP 7422789U JP H0314632 U JPH0314632 U JP H0314632U
Authority
JP
Japan
Prior art keywords
focal length
focusing lens
focusing
converter
video camera
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.)
Pending
Application number
JP7422789U
Other languages
Japanese (ja)
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 filed Critical
Priority to JP7422789U priority Critical patent/JPH0314632U/ja
Publication of JPH0314632U publication Critical patent/JPH0314632U/ja
Pending legal-status Critical Current

Links

Description

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

第１図は本考案のビデオカメラのオートフオー
カス装置を示すブロツク線図、第２図はモータの
回転速度と焦点距離との関係を示す特性図である
。 １……撮影レンズ、２……フオーカシングレン
ズ、４……焦点距離検出器、６……記憶部、７…
…モータ駆動回路、８……モータ。 FIG. 1 is a block diagram showing an autofocus device for a video camera according to the present invention, and FIG. 2 is a characteristic diagram showing the relationship between the rotational speed of the motor and the focal length. 1...Photographing lens, 2...Focusing lens, 4...Focal length detector, 6...Storage unit, 7...
...Motor drive circuit, 8...Motor.

Claims (1)

【実用新案登録請求の範囲】 ビデオカメラの光軸上を移動可能に設けられた
フオーカシングレンズを、手動操作又はオートフ
オーカス動作により可動して、撮像時のピント合
せを行うビデオカメラのオートフオーカス装置に
おいて、 前記フオーカシングレンズを透過した被写体光
束を受けて焦点距離を検出する焦点距離検出器と
、この焦点距離検出器の検出信号をデジタル変換
するＡ／Ｄ変換器と、このＡ／Ｄ変換器から出力
される距離データの各値に対応して漸増又は漸減
する値をもつ速度データが記憶された記憶手段と
、この記憶手段から読出された速度データに基い
てモータを回転駆動するモータ駆動部と、このモ
ータ駆動部の制御信号により伝達手段を介して前
記フオーカシングレンズを可動するモータとが設
けられたことを特徴とするビデオカメラのオート
フオーカス装置。[Claims for Utility Model Registration] A focusing lens that is movable on the optical axis of the video camera is moved by manual operation or auto-focusing operation to adjust the focus during imaging. The focusing device includes: a focal length detector that detects the focal length by receiving the subject light flux that has passed through the focusing lens; an A/D converter that converts the detection signal of the focal length detector into digital; A storage means in which speed data having a value that gradually increases or decreases corresponding to each value of the distance data output from the D converter is stored, and a motor is driven to rotate based on the speed data read from the storage means. What is claimed is: 1. An autofocus device for a video camera, comprising: a motor drive unit that moves the focusing lens via a transmission means in response to a control signal from the motor drive unit.
JP7422789U 1989-06-23 1989-06-23 Pending JPH0314632U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7422789U JPH0314632U (en) 1989-06-23 1989-06-23

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7422789U JPH0314632U (en) 1989-06-23 1989-06-23

Publications (1)

Publication Number Publication Date
JPH0314632U true JPH0314632U (en) 1991-02-14

Family

ID=31613741

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7422789U Pending JPH0314632U (en) 1989-06-23 1989-06-23

Country Status (1)

Country Link
JP (1) JPH0314632U (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5937509A (en) * 1982-08-27 1984-03-01 Nippon Kogaku Kk <Nikon> Zoom lens capable of automatic focusing
JPS61264307A (en) * 1985-05-20 1986-11-22 West Electric Co Ltd Method and device for zooming
JPS6258212A (en) * 1985-09-09 1987-03-13 West Electric Co Ltd Focusing lens moving device for front lens-fixed zoom lens
JPS6370834A (en) * 1986-09-12 1988-03-31 Olympus Optical Co Ltd Power focus device for lens interchangeable type camera
JPH01185083A (en) * 1988-01-19 1989-07-24 Canon Inc Focus adjuster

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5937509A (en) * 1982-08-27 1984-03-01 Nippon Kogaku Kk <Nikon> Zoom lens capable of automatic focusing
JPS61264307A (en) * 1985-05-20 1986-11-22 West Electric Co Ltd Method and device for zooming
JPS6258212A (en) * 1985-09-09 1987-03-13 West Electric Co Ltd Focusing lens moving device for front lens-fixed zoom lens
JPS6370834A (en) * 1986-09-12 1988-03-31 Olympus Optical Co Ltd Power focus device for lens interchangeable type camera
JPH01185083A (en) * 1988-01-19 1989-07-24 Canon Inc Focus adjuster

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