HK34983A - Focussing system for a photographic or cinematographic camera - Google Patents

Focussing system for a photographic or cinematographic camera

Info

Publication number
HK34983A
HK34983A HK349/83A HK34983A HK34983A HK 34983 A HK34983 A HK 34983A HK 349/83 A HK349/83 A HK 349/83A HK 34983 A HK34983 A HK 34983A HK 34983 A HK34983 A HK 34983A
Authority
HK
Hong Kong
Prior art keywords
signals
photographic
photodiodes
photodiode
subject
Prior art date
Application number
HK349/83A
Other languages
English (en)
Inventor
Lerman Peter
Wagensonner Eduard
Huber Theodor
Cocron Istvan
Borowski Kurt
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 HK34983A publication Critical patent/HK34983A/xx

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C3/00—Measuring distances in line of sight; Optical rangefinders
    • G01C3/24—Measuring distances in line of sight; Optical rangefinders using a parallactic triangle with fixed angles and a base of variable length in the observation station, e.g. in the instrument
    • 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)
  • Remote Sensing (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Optics & Photonics (AREA)
  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Measurement Of Optical Distance (AREA)
  • Networks Using Active Elements (AREA)
  • Eye Examination Apparatus (AREA)
  • Studio Devices (AREA)
HK349/83A 1978-01-23 1983-09-08 Focussing system for a photographic or cinematographic camera HK34983A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2802708A DE2802708C2 (de) 1978-01-23 1978-01-23 Fokussiervorrichtung für eine Kamera

Publications (1)

Publication Number Publication Date
HK34983A true HK34983A (en) 1983-09-16

Family

ID=6030116

Family Applications (1)

Application Number Title Priority Date Filing Date
HK349/83A HK34983A (en) 1978-01-23 1983-09-08 Focussing system for a photographic or cinematographic camera

Country Status (9)

Country Link
US (1) US4221474A (de)
JP (1) JPS54113335A (de)
AT (1) AT374013B (de)
CH (1) CH638323A5 (de)
DE (1) DE2802708C2 (de)
FR (1) FR2415317A1 (de)
GB (1) GB2013063B (de)
HK (1) HK34983A (de)
SG (1) SG18583G (de)

Families Citing this family (10)

* 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
US4357083A (en) * 1980-10-06 1982-11-02 Polaroid Corporation Method and apparatus using weighted range signal for controlling photographic functions
JPS57119330A (en) * 1981-01-16 1982-07-24 Canon Inc Camera incorporating auto-focusing system
DE3227404A1 (de) * 1982-07-22 1984-01-26 Ernst Leitz Wetzlar Gmbh, 6330 Wetzlar Verfahren und einrichtungen zum uebertragen von informationen
DE3336283A1 (de) * 1982-10-05 1984-04-05 Konishiroku Photo Ind Automatische fokussiereinrichtung
KR950008704B1 (ko) * 1990-09-29 1995-08-04 삼성전자주식회사 비디오카메라의 자동촛점장치 및 그 방법
US5245398A (en) * 1991-06-21 1993-09-14 Eastman Kodak Company Time-multiplexed multi-zone rangefinder
US7142671B2 (en) * 2000-12-13 2006-11-28 Broadcom Corporation Methods and apparatus for implementing a cryptography engine
US7366300B2 (en) * 2000-12-13 2008-04-29 Broadcom Corporation Methods and apparatus for implementing a cryptography engine
US7502463B2 (en) * 2000-12-13 2009-03-10 Broadcom Corporation Methods and apparatus for implementing a cryptography engine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US3999192A (en) * 1970-05-27 1976-12-21 Canon Kabushiki Kaisha Focus detecting system
US3836919A (en) * 1970-12-08 1974-09-17 Canon Kk Automatic focusing device for use with a photographic camera
US3736057A (en) * 1971-04-12 1973-05-29 Eastman Kodak Co Zone range finder apparatus
JPS5368222A (en) * 1976-11-30 1978-06-17 Fuji Photo Film Co Ltd Automatic focus control device

Also Published As

Publication number Publication date
GB2013063A (en) 1979-08-01
GB2013063B (en) 1982-04-28
JPS54113335A (en) 1979-09-04
ATA6279A (de) 1983-07-15
SG18583G (en) 1983-12-16
FR2415317A1 (fr) 1979-08-17
JPS5654609B2 (de) 1981-12-26
US4221474A (en) 1980-09-09
DE2802708C2 (de) 1986-06-05
DE2802708A1 (de) 1979-07-26
CH638323A5 (de) 1983-09-15
AT374013B (de) 1984-03-12

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Legal Events

Date Code Title Description
PE Patent expired