JP2763828B2 - ビデオカメラの自動焦点調節装置及びその方法 - Google Patents

ビデオカメラの自動焦点調節装置及びその方法

Info

Publication number
JP2763828B2
JP2763828B2 JP2407647A JP40764790A JP2763828B2 JP 2763828 B2 JP2763828 B2 JP 2763828B2 JP 2407647 A JP2407647 A JP 2407647A JP 40764790 A JP40764790 A JP 40764790A JP 2763828 B2 JP2763828 B2 JP 2763828B2
Authority
JP
Japan
Prior art keywords
signal
light
unit
motor
voltage
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 - Fee Related
Application number
JP2407647A
Other languages
English (en)
Japanese (ja)
Other versions
JPH04141634A (ja
Inventor
春基 閔
守烈 鄭
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sansei Denshi Co Ltd
Original Assignee
Sansei Denshi Co Ltd
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 by Sansei Denshi Co Ltd filed Critical Sansei Denshi Co Ltd
Publication of JPH04141634A publication Critical patent/JPH04141634A/ja
Application granted granted Critical
Publication of JP2763828B2 publication Critical patent/JP2763828B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/28—Systems for automatic generation of focusing signals
    • G02B7/30—Systems for automatic generation of focusing signals using parallactic triangle with a base line
    • G02B7/32—Systems for automatic generation of focusing signals using parallactic triangle with a base line using active means, e.g. light emitter
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/32—Means for focusing
    • G03B13/34—Power focusing
    • G03B13/36—Autofocus systems
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K7/00—Modulating pulses with a continuously-variable modulating signal
    • H03K7/08—Duration or width modulation ; Duty cycle modulation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/10—Details of semiconductor or other solid state devices to be connected
    • H01L2924/11—Device type
    • H01L2924/12—Passive devices, e.g. 2 terminal devices
    • H01L2924/1204—Optical Diode
    • H01L2924/12041—LED

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Automatic Focus Adjustment (AREA)
  • Focusing (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Measurement Of Optical Distance (AREA)
  • Studio Devices (AREA)
JP2407647A 1990-09-29 1990-12-27 ビデオカメラの自動焦点調節装置及びその方法 Expired - Fee Related JP2763828B2 (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR1019900015683A KR950008704B1 (ko) 1990-09-29 1990-09-29 비디오카메라의 자동촛점장치 및 그 방법
KR15683 1990-09-29
KR015683 1990-09-29

Publications (2)

Publication Number Publication Date
JPH04141634A JPH04141634A (ja) 1992-05-15
JP2763828B2 true JP2763828B2 (ja) 1998-06-11

Family

ID=19304264

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2407647A Expired - Fee Related JP2763828B2 (ja) 1990-09-29 1990-12-27 ビデオカメラの自動焦点調節装置及びその方法

Country Status (5)

Country Link
JP (1) JP2763828B2 (fr)
KR (1) KR950008704B1 (fr)
DE (1) DE4131808C2 (fr)
FR (1) FR2668326B1 (fr)
GB (1) GB2249896B (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5572012A (en) * 1993-06-16 1996-11-05 Seiko Precision Inc. Distance measuring device for camera using integration of reflected light

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3678835A (en) * 1969-08-20 1972-07-25 Canon Kk Automatic focusing device for cameras and the like
DE2802708C2 (de) * 1978-01-23 1986-06-05 Agfa-Gevaert Ag, 5090 Leverkusen Fokussiervorrichtung für eine Kamera
GB2104334B (en) * 1981-08-17 1986-06-18 Nat Res Corp Automatic focusing device
DE3416072C2 (de) * 1983-04-28 1993-12-16 Canon Kk Automatische Scharfeinstellungsdetektoreinrichtung
JPS6060511A (ja) * 1983-09-14 1985-04-08 Asahi Optical Co Ltd 測距装置
JPS60102606A (ja) * 1983-11-09 1985-06-06 Sanyo Electric Co Ltd オ−トフオ−カス制御回路
US4753528A (en) * 1983-12-13 1988-06-28 Quantime, Inc. Laser archery distance device
JPS60253811A (ja) * 1984-05-30 1985-12-14 Copal Co Ltd 測距装置
JPS6256911A (ja) * 1985-09-05 1987-03-12 Canon Inc 自動焦点検出装置
JP2811655B2 (ja) * 1985-10-09 1998-10-15 オリンパス光学工業株式会社 カメラのモータ駆動回路
JPS62210414A (ja) * 1986-03-12 1987-09-16 Minolta Camera Co Ltd 焦点検出装置
JPS6360416A (ja) * 1986-09-01 1988-03-16 Konica Corp 自動焦点調節装置
JPS646932A (en) * 1987-06-29 1989-01-11 Minolta Camera Kk Payoff mechanism for lens
JPH01116510A (ja) * 1987-10-29 1989-05-09 Olympus Optical Co Ltd 光投射式オートフォーカス装置
JP2676759B2 (ja) * 1988-02-08 1997-11-17 株式会社ニコン アクティブ測距装置
JPH01140116U (fr) * 1988-03-19 1989-09-26
JP2704960B2 (ja) * 1988-05-20 1998-01-26 キヤノン株式会社 カメラ

Also Published As

Publication number Publication date
GB2249896A (en) 1992-05-20
GB9120686D0 (en) 1991-11-06
FR2668326A1 (fr) 1992-04-24
KR920007436A (ko) 1992-04-28
DE4131808A1 (de) 1992-04-02
JPH04141634A (ja) 1992-05-15
FR2668326B1 (fr) 1994-02-04
KR950008704B1 (ko) 1995-08-04
GB2249896B (en) 1994-11-30
DE4131808C2 (de) 1994-02-17

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