JPH0258209U - - Google Patents

Info

Publication number
JPH0258209U
JPH0258209U JP13583588U JP13583588U JPH0258209U JP H0258209 U JPH0258209 U JP H0258209U JP 13583588 U JP13583588 U JP 13583588U JP 13583588 U JP13583588 U JP 13583588U JP H0258209 U JPH0258209 U JP H0258209U
Authority
JP
Japan
Prior art keywords
distance
subject
storage means
focus
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.)
Granted
Application number
JP13583588U
Other languages
Japanese (ja)
Other versions
JPH0714969Y2 (en
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 JP1988135835U priority Critical patent/JPH0714969Y2/en
Priority to GB8923297A priority patent/GB2224126B/en
Priority to FR8913522A priority patent/FR2637990A1/fr
Priority to DE19893934767 priority patent/DE3934767C2/en
Publication of JPH0258209U publication Critical patent/JPH0258209U/ja
Priority to US07/639,371 priority patent/US5227828A/en
Application granted granted Critical
Publication of JPH0714969Y2 publication Critical patent/JPH0714969Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Description

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

第１図は、本考案に係る自動焦点装置のブロツ
ク図、第２図Ａ，Ｂは、本考案に係る自動焦点装
置の動作説明図、第３図、第４図および第５図は
、本考案に係る自動焦点装置の動作フローチヤー
トである。 １１……測距部（測距手段）、１２……合焦制
御部（合焦制御手段）、１３……レンズ駆動部（
レンズ駆動手段）、１４……レンズ駆動回路（レ
ンズ駆動手段）、１５……レリーズボタン、１６
……被写体距離記憶部（記憶手段）、１７……許
容変化量記憶部（許容変化量記憶手段）。 FIG. 1 is a block diagram of the autofocus device according to the present invention, FIGS. 2A and B are operation explanatory diagrams of the autofocus device according to the present invention, and FIGS. 3, 4, and 5 are diagrams of the present invention. 2 is an operation flowchart of the automatic focusing device according to the invention. 11... Distance measuring section (distance measuring means), 12... Focusing control section (focusing control means), 13... Lens driving section (
lens drive means), 14...lens drive circuit (lens drive means), 15...release button, 16
. . . Subject distance storage unit (storage means), 17 . . . Allowable change amount storage unit (allowable change amount storage unit).

Claims (1)

【実用新案登録請求の範囲】 被写体までの距離を所定時間間隔で測定する測
距手段と、 上記測距手段によつて測定された被写体距離に
基づいて焦点レンズを合焦位置まで駆動するレン
ズ駆動手段と、 合焦時における上記被写体までの距離を記憶す
る記憶手段と、 上記測距手段によつて測定された現在の被写体
までの距離と上記記憶手段に記憶されている上記
合焦時における被写体までの距離との許容変化量
を記憶する許容変化量記憶手段と、 上記測距手段によつて測定された距離に基づい
て上記レンズ駆動手段を合焦作動させ、合焦した
場合には、上記記憶手段に合焦時における前記被
写体までの距離を記憶させると共に、上記測距手
段によつて測定されている現在の前記被写体まで
の距離と当該記憶手段に記憶させた前記被写体ま
での距離との変化量が上記許容変化量記憶手段に
記憶されている許容変化量以内であるか否かの判
断をし、許容変化量より小さければ前記測距手段
によつて測定されている被写体に合焦させるべく
上記レンズ駆動手段を合焦作動させ、許容変化量
よりも大きければ前記レンズ駆動手段を、前記記
憶手段に記憶されている距離に合焦させるべく合
焦動作、または現在の合焦状態を維持させるよう
に停止させる合焦制御手段とを有することを特徴
とするカメラの自動焦点装置。[Scope of Claim for Utility Model Registration] Distance measuring means for measuring the distance to a subject at predetermined time intervals; and a lens drive for driving a focusing lens to an in-focus position based on the subject distance measured by the distance measuring means. a storage means for storing a distance to the subject at the time of focusing; and a current distance to the subject measured by the distance measuring means and the subject at the time of focusing stored in the storage means; an allowable change amount storage means for storing an allowable change amount with respect to the distance from Storing the distance to the subject at the time of focus in the storage means, and comparing the current distance to the subject measured by the distance measuring means with the distance to the subject stored in the storage means. It is determined whether the amount of change is within the allowable change amount stored in the allowable change amount storage means, and if it is smaller than the allowable change amount, the subject being measured by the distance measuring means is brought into focus. If the amount of change is greater than an allowable amount of change, the lens driving means is operated to focus on the distance stored in the storage means, or the current focusing state is maintained. 1. An automatic focusing device for a camera, characterized in that it has a focusing control means for controlling the focus so as to stop the focus.
JP1988135835U 1988-10-18 1988-10-18 Camera autofocus device Expired - Lifetime JPH0714969Y2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP1988135835U JPH0714969Y2 (en) 1988-10-18 1988-10-18 Camera autofocus device
GB8923297A GB2224126B (en) 1988-10-18 1989-10-16 Automatic focusing device
FR8913522A FR2637990A1 (en) 1988-10-18 1989-10-17
DE19893934767 DE3934767C2 (en) 1988-10-18 1989-10-18 Autofocus method for focusing a camera lens and camera with an autofocus device
US07/639,371 US5227828A (en) 1988-10-18 1991-01-10 Automatic focusing device for camera lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988135835U JPH0714969Y2 (en) 1988-10-18 1988-10-18 Camera autofocus device

Publications (2)

Publication Number Publication Date
JPH0258209U true JPH0258209U (en) 1990-04-26
JPH0714969Y2 JPH0714969Y2 (en) 1995-04-10

Family

ID=31395791

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988135835U Expired - Lifetime JPH0714969Y2 (en) 1988-10-18 1988-10-18 Camera autofocus device

Country Status (1)

Country Link
JP (1) JPH0714969Y2 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6145213A (en) * 1984-10-04 1986-03-05 Minolta Camera Co Ltd Automatic focus adjusting device of camera

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6145213A (en) * 1984-10-04 1986-03-05 Minolta Camera Co Ltd Automatic focus adjusting device of camera

Also Published As

Publication number Publication date
JPH0714969Y2 (en) 1995-04-10

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