JPS4898826A - - Google Patents

Info

Publication number
JPS4898826A
JPS4898826A JP47031342A JP3134272A JPS4898826A JP S4898826 A JPS4898826 A JP S4898826A JP 47031342 A JP47031342 A JP 47031342A JP 3134272 A JP3134272 A JP 3134272A JP S4898826 A JPS4898826 A JP S4898826A
Authority
JP
Japan
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
JP47031342A
Other versions
JPS5443374B2 (ja
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 JP3134272A priority Critical patent/JPS5443374B2/ja
Priority to US344725A priority patent/US3906389A/en
Publication of JPS4898826A publication Critical patent/JPS4898826A/ja
Publication of JPS5443374B2 publication Critical patent/JPS5443374B2/ja
Expired 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Automatic Focus Adjustment (AREA)
  • Manipulation Of Pulses (AREA)
  • Control Of Amplification And Gain Control (AREA)
JP3134272A 1972-03-29 1972-03-29 Expired JPS5443374B2 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP3134272A JPS5443374B2 (ja) 1972-03-29 1972-03-29
US344725A US3906389A (en) 1972-03-29 1973-03-26 Difference amplifier with gain controlled by the sum of the inputs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3134272A JPS5443374B2 (ja) 1972-03-29 1972-03-29

Publications (2)

Publication Number Publication Date
JPS4898826A true JPS4898826A (ja) 1973-12-14
JPS5443374B2 JPS5443374B2 (ja) 1979-12-19

Family

ID=12328545

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3134272A Expired JPS5443374B2 (ja) 1972-03-29 1972-03-29

Country Status (2)

Country Link
US (1) US3906389A (ja)
JP (1) JPS5443374B2 (ja)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5674208A (en) * 1979-11-21 1981-06-19 Nippon Kogaku Kk <Nikon> Automatic focus adjusting device
JPS56111839A (en) * 1980-02-08 1981-09-03 Fuji Photo Optical Co Ltd Distance detecting mechanism of camera available for use of lens of different focal length
JPS56126813A (en) * 1980-03-12 1981-10-05 Canon Inc Incident position detector of luminous flux
JPS57125910A (en) * 1981-01-30 1982-08-05 Hitachi Ltd Method and device for automatic focusing
JPS5887543A (ja) * 1981-11-19 1983-05-25 Nitto Kogaku Kk カメラの自動測距装置
JPH021712U (ja) * 1988-11-24 1990-01-08

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4039824A (en) * 1974-08-08 1977-08-02 Minolta Camera Kabushiki Kaisha Focus detecting photoelectric device
DE2447663C2 (de) * 1974-10-05 1983-01-13 Agfa-Gevaert Ag, 5090 Leverkusen Verfahren und Vorrichtung zur automatischen Focussierung eines Objektives auf ein Meßobjekt
US4032934A (en) * 1974-12-26 1977-06-28 Hendrickson Kenneth L Automatic focusing system
DE2619795C3 (de) * 1976-05-05 1978-11-23 Ernst Leitz Wetzlar Gmbh, 6300 Lahn- Wetzlar Verfahren und Anordnungen zur automatischen Parallaxebestimmung
DE2746920A1 (de) * 1977-10-19 1979-04-26 Agfa Gevaert Ag Kamera mit einer entfernungsmessvorrichtung
DE2750735A1 (de) * 1977-11-12 1979-05-17 Agfa Gevaert Ag Fotografische kamera mit einer entfernungsmessvorrichtung
DE2828865C2 (de) * 1978-06-30 1985-02-07 Agfa-Gevaert Ag, 5090 Leverkusen Fokussiervorrichtung für fotografische oder kinematografische Kamera
US4470676A (en) * 1978-07-28 1984-09-11 Canon Kabushiki Kaisha Focus detecting device
US4335942A (en) * 1979-10-26 1982-06-22 Canon Kabushiki Kaisha Camera provided with automatic focus detector
US4367027A (en) * 1980-03-12 1983-01-04 Honeywell Inc. Active auto focus system improvement
US4317991A (en) * 1980-03-12 1982-03-02 Honeywell Inc. Digital auto focus system utilizing a photodetector array
US4484069A (en) * 1981-10-15 1984-11-20 St. Regis Paper Company Apparatus and method for sensing distance
JPS59101611A (ja) * 1982-12-01 1984-06-12 Chinon Kk 合焦制御装置
JPS59148034A (ja) * 1983-02-14 1984-08-24 Konishiroku Photo Ind Co Ltd カメラの測距装置
US4621292A (en) * 1983-10-19 1986-11-04 Matsushita Electric Industrial Co., Ltd. Automatic focusing device for a video camera
JPS60249112A (ja) * 1984-05-25 1985-12-09 Seiko Koki Kk カメラ用距離検出装置
US4623237A (en) * 1984-07-07 1986-11-18 Canon Kabushiki Kaisha Automatic focusing device
US4701603A (en) * 1985-10-17 1987-10-20 Optical Disc Corporation Focus control system for optical information recorder or player
US4763154A (en) * 1985-12-27 1988-08-09 Ricoh Company, Ltd. Focus detecting device and image signal amplifier circuit therefor
JPS62215913A (ja) * 1986-03-18 1987-09-22 Nippon Kogaku Kk <Nikon> 自動焦点検出回路
US5117118A (en) * 1988-10-19 1992-05-26 Astex Co., Ltd. Photoelectric switch using an integrated circuit with reduced interconnections
US5013903A (en) * 1990-02-26 1991-05-07 At&T Bell Laboratories Lightwave receiver having differential input
US5055664A (en) * 1990-08-06 1991-10-08 Eaton Corporation Optical distance measuring system using a position sensitive device and a ramp generator driven light source
US5386263A (en) * 1990-10-20 1995-01-31 Fuji Photo Film Co., Ltd. Method and apparatus for rangefinding
FI98766C (fi) * 1994-01-11 1997-08-11 Vaisala Oy Laite ja menetelmä näkyvyyden ja vallitsevan sään mittaamiseksi
US6756576B1 (en) * 2000-08-30 2004-06-29 Micron Technology, Inc. Imaging system having redundant pixel groupings
US7223957B2 (en) * 2005-04-15 2007-05-29 Rockwell Automation Technologies, Inc. Sensor including circuitry for recovering time-varying information and removing DC offsets

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3497717A (en) * 1966-09-29 1970-02-24 Alfred W Barber Analog device for multiplying/dividing using photoconductive means
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

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5674208A (en) * 1979-11-21 1981-06-19 Nippon Kogaku Kk <Nikon> Automatic focus adjusting device
JPS56111839A (en) * 1980-02-08 1981-09-03 Fuji Photo Optical Co Ltd Distance detecting mechanism of camera available for use of lens of different focal length
JPS56126813A (en) * 1980-03-12 1981-10-05 Canon Inc Incident position detector of luminous flux
JPH0213763B2 (ja) * 1980-03-12 1990-04-05 Canon Kk
JPS57125910A (en) * 1981-01-30 1982-08-05 Hitachi Ltd Method and device for automatic focusing
JPS5887543A (ja) * 1981-11-19 1983-05-25 Nitto Kogaku Kk カメラの自動測距装置
JPH021712U (ja) * 1988-11-24 1990-01-08

Also Published As

Publication number Publication date
JPS5443374B2 (ja) 1979-12-19
US3906389A (en) 1975-09-16

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