HK19983A - Camera focussing system - Google Patents

Camera focussing system

Info

Publication number
HK19983A
HK19983A HK199/83A HK19983A HK19983A HK 19983 A HK19983 A HK 19983A HK 199/83 A HK199/83 A HK 199/83A HK 19983 A HK19983 A HK 19983A HK 19983 A HK19983 A HK 19983A
Authority
HK
Hong Kong
Prior art keywords
threshold level
reached
flip
integral
signal
Prior art date
Application number
HK199/83A
Other languages
English (en)
Inventor
Istvan Cocron
Theodor Huber
Original Assignee
Agfa-Gevaert Aktiengesellschaft
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 Agfa-Gevaert Aktiengesellschaft filed Critical Agfa-Gevaert Aktiengesellschaft
Publication of HK19983A publication Critical patent/HK19983A/xx

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/483—Details of pulse systems
    • G01S7/486—Receivers
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)
  • Amplifiers (AREA)
  • Measurement Of Optical Distance (AREA)
HK199/83A 1978-07-21 1983-06-16 Camera focussing system HK19983A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782832044 DE2832044A1 (de) 1978-07-21 1978-07-21 Fokussiervorrichtung fuer fotografische oder kinematografische kameras

Publications (1)

Publication Number Publication Date
HK19983A true HK19983A (en) 1983-06-24

Family

ID=6044980

Family Applications (1)

Application Number Title Priority Date Filing Date
HK199/83A HK19983A (en) 1978-07-21 1983-06-16 Camera focussing system

Country Status (5)

Country Link
US (1) US4251145A (cs)
JP (1) JPS59809B2 (cs)
DE (1) DE2832044A1 (cs)
GB (1) GB2027313B (cs)
HK (1) HK19983A (cs)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2939139A1 (de) * 1979-09-27 1981-04-09 Agfa-Gevaert Ag, 5090 Leverkusen Entfernungsmessvorrichtung
JPS56110419U (cs) * 1980-01-28 1981-08-26
JPS5732409A (en) * 1980-08-06 1982-02-22 Chinon Kk Focusing controller
JPS5732408A (en) * 1980-08-06 1982-02-22 Chinon Kk Focusing controller
JPS5762013A (en) * 1980-09-30 1982-04-14 Ricoh Co Ltd Focusing detecting circuit
JPS59101611A (ja) * 1982-12-01 1984-06-12 Chinon Kk 合焦制御装置
GB2141000B (en) * 1983-04-28 1986-10-08 Canon Kk Automatic focus
JPH01123109A (ja) * 1987-11-07 1989-05-16 Canon Inc 測距装置
GB2212688B (en) * 1987-12-25 1992-06-17 Seikosha Kk Focus determining system for a camera

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH482217A (fr) * 1968-09-26 1969-11-30 Paillard Sa Télémètre à faisceau lumineux
US3678835A (en) * 1969-08-20 1972-07-25 Canon Kk Automatic focusing device for cameras and the like
US3610934A (en) * 1969-08-22 1971-10-05 Century Geophysical Corp Automatic focusing system utilizing means for alternately directing light over two paths having slightly different lengths
US3836919A (en) * 1970-12-08 1974-09-17 Canon Kk Automatic focusing device for use with a photographic camera
DE2225557A1 (de) * 1971-06-23 1973-03-15 Hauser Raimund Entfernungsmesser
DE2410681A1 (de) * 1974-03-06 1975-09-11 Agfa Gevaert Ag Automatische fokussiervorrichtung
US4010479A (en) * 1974-07-10 1977-03-01 Asahi Kogaku Kogyo Kabushiki Kaisha Focusing apparatus for optical systems
US3972607A (en) * 1974-12-30 1976-08-03 Agfa-Gevaert, A.G. Analog/digital control arrangement for photographic apparatus
JPS51142318A (en) * 1975-05-20 1976-12-07 Asahi Optical Co Ltd Focus adjusting device for optical systems

Also Published As

Publication number Publication date
JPS59809B2 (ja) 1984-01-09
GB2027313B (en) 1982-10-20
DE2832044A1 (de) 1980-01-31
JPS5518690A (en) 1980-02-08
DE2832044C2 (cs) 1987-09-24
GB2027313A (en) 1980-02-13
US4251145A (en) 1981-02-17

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Legal Events

Date Code Title Description
PE Patent expired