FR2668326B1 - AUTOMATIC FOCUSING DEVICE AND RELATED METHOD FOR VIDEO CAMERA. - Google Patents

AUTOMATIC FOCUSING DEVICE AND RELATED METHOD FOR VIDEO CAMERA.

Info

Publication number
FR2668326B1
FR2668326B1 FR9111552A FR9111552A FR2668326B1 FR 2668326 B1 FR2668326 B1 FR 2668326B1 FR 9111552 A FR9111552 A FR 9111552A FR 9111552 A FR9111552 A FR 9111552A FR 2668326 B1 FR2668326 B1 FR 2668326B1
Authority
FR
France
Prior art keywords
video camera
automatic focusing
focusing device
related method
automatic
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
FR9111552A
Other languages
French (fr)
Other versions
FR2668326A1 (en
Inventor
Min Chun-Gi
Jeong Su-Yeol
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.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics 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 Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of FR2668326A1 publication Critical patent/FR2668326A1/en
Application granted granted Critical
Publication of FR2668326B1 publication Critical patent/FR2668326B1/en
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)
FR9111552A 1990-09-29 1991-09-19 AUTOMATIC FOCUSING DEVICE AND RELATED METHOD FOR VIDEO CAMERA. Expired - Fee Related FR2668326B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019900015683A KR950008704B1 (en) 1990-09-29 1990-09-29 Apparatus and method for auto-focusing in a video camera

Publications (2)

Publication Number Publication Date
FR2668326A1 FR2668326A1 (en) 1992-04-24
FR2668326B1 true FR2668326B1 (en) 1994-02-04

Family

ID=19304264

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9111552A Expired - Fee Related FR2668326B1 (en) 1990-09-29 1991-09-19 AUTOMATIC FOCUSING DEVICE AND RELATED METHOD FOR VIDEO CAMERA.

Country Status (5)

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

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 (en) * 1978-01-23 1986-06-05 Agfa-Gevaert Ag, 5090 Leverkusen Focusing device for a camera
GB2104334B (en) * 1981-08-17 1986-06-18 Nat Res Corp Automatic focusing device
GB2141000B (en) * 1983-04-28 1986-10-08 Canon Kk Automatic focus
JPS6060511A (en) * 1983-09-14 1985-04-08 Asahi Optical Co Ltd Distance measuring device
JPS60102606A (en) * 1983-11-09 1985-06-06 Sanyo Electric Co Ltd Auto focus controlling circuit
US4753528A (en) * 1983-12-13 1988-06-28 Quantime, Inc. Laser archery distance device
JPS60253811A (en) * 1984-05-30 1985-12-14 Copal Co Ltd Range finder
JPS6256911A (en) * 1985-09-05 1987-03-12 Canon Inc Automatic focus detecting device
JP2811655B2 (en) * 1985-10-09 1998-10-15 オリンパス光学工業株式会社 Camera motor drive circuit
JPS62210414A (en) * 1986-03-12 1987-09-16 Minolta Camera Co Ltd Focus detecting device
JPS6360416A (en) * 1986-09-01 1988-03-16 Konica Corp Automatic focusing device
JPS646932A (en) * 1987-06-29 1989-01-11 Minolta Camera Kk Payoff mechanism for lens
JPH01116510A (en) * 1987-10-29 1989-05-09 Olympus Optical Co Ltd Light projecting system automatic focusing device
JP2676759B2 (en) * 1988-02-08 1997-11-17 株式会社ニコン Active ranging device
JPH01140116U (en) * 1988-03-19 1989-09-26
JP2704960B2 (en) * 1988-05-20 1998-01-26 キヤノン株式会社 camera

Also Published As

Publication number Publication date
GB2249896A (en) 1992-05-20
DE4131808C2 (en) 1994-02-17
GB2249896B (en) 1994-11-30
KR950008704B1 (en) 1995-08-04
JP2763828B2 (en) 1998-06-11
KR920007436A (en) 1992-04-28
GB9120686D0 (en) 1991-11-06
FR2668326A1 (en) 1992-04-24
JPH04141634A (en) 1992-05-15
DE4131808A1 (en) 1992-04-02

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Legal Events

Date Code Title Description
ST Notification of lapse

Effective date: 20100531