JPS5115736B1 - - Google Patents

Info

Publication number
JPS5115736B1
JPS5115736B1 JP46008483A JP848371A JPS5115736B1 JP S5115736 B1 JPS5115736 B1 JP S5115736B1 JP 46008483 A JP46008483 A JP 46008483A JP 848371 A JP848371 A JP 848371A JP S5115736 B1 JPS5115736 B1 JP S5115736B1
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.)
Pending
Application number
JP46008483A
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 JP46008483A priority Critical patent/JPS5115736B1/ja
Priority to DE2203506A priority patent/DE2203506B2/de
Priority to US00224719A priority patent/US3781119A/en
Priority to GB817372A priority patent/GB1361348A/en
Priority to FR7205916A priority patent/FR2126280B1/fr
Publication of JPS5115736B1 publication Critical patent/JPS5115736B1/ja
Pending legal-status Critical Current

Links

Classifications

    • 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
    • G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
    • G03B7/08—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device
    • G03B7/081—Analogue circuits
    • G03B7/083—Analogue circuits for control of exposure time

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Exposure Control For Cameras (AREA)
JP46008483A 1971-02-22 1971-02-22 Pending JPS5115736B1 (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP46008483A JPS5115736B1 (ja) 1971-02-22 1971-02-22
DE2203506A DE2203506B2 (de) 1971-02-22 1972-01-26 Schaltungsanordnung zur Lichtmessung für eine Einrichtung zur automatischen Belichtungszeitsteuerung in einäugigen Spiegelreflexkameras
US00224719A US3781119A (en) 1971-02-22 1972-02-09 Dual light-measurement and compensation circuitry for cameras
GB817372A GB1361348A (en) 1971-02-22 1972-02-22 Single lens reflex camera having a light measurement circuit
FR7205916A FR2126280B1 (ja) 1971-02-22 1972-02-22

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP46008483A JPS5115736B1 (ja) 1971-02-22 1971-02-22

Publications (1)

Publication Number Publication Date
JPS5115736B1 true JPS5115736B1 (ja) 1976-05-19

Family

ID=11694340

Family Applications (1)

Application Number Title Priority Date Filing Date
JP46008483A Pending JPS5115736B1 (ja) 1971-02-22 1971-02-22

Country Status (5)

Country Link
US (1) US3781119A (ja)
JP (1) JPS5115736B1 (ja)
DE (1) DE2203506B2 (ja)
FR (1) FR2126280B1 (ja)
GB (1) GB1361348A (ja)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4970625A (ja) * 1972-11-09 1974-07-09
JPS4977628A (ja) * 1972-11-29 1974-07-26
US4095241A (en) * 1973-04-11 1978-06-13 Canon Kabushiki Kaisha Photo-sensing circuit
JPS51134126A (en) * 1975-05-16 1976-11-20 Nippon Kogaku Kk <Nikon> Light measure device for the camera
US4035634A (en) * 1975-10-31 1977-07-12 Fuji Shashin Koki Kabushiki Kaisha Light receptor device
US4168125A (en) * 1975-12-10 1979-09-18 General Energy Development Corporation Light sensing device
JPS5690226A (en) * 1979-12-25 1981-07-22 Olympus Optical Co Ltd Photoelectric conversion circuit
JPS5756828A (en) * 1980-09-22 1982-04-05 Olympus Optical Co Ltd Automatic exposure control camera
JPS5845523A (ja) * 1981-09-11 1983-03-16 Olympus Optical Co Ltd 測光回路
JPS5946521A (ja) * 1982-09-08 1984-03-15 Canon Inc 測光回路
DE3604971A1 (de) * 1986-02-17 1987-08-20 Messerschmitt Boelkow Blohm Photosensoreinrichtung mit dunkelstromkompensation
US4973833A (en) * 1988-09-28 1990-11-27 Minolta Camera Kabushiki Kaisha Image sensor including logarithmic converters
US7796173B2 (en) * 2003-08-13 2010-09-14 Lettvin Jonathan D Imaging system
US7952626B2 (en) * 2003-11-17 2011-05-31 Lettvin Jonathan D Geometric remapping with delay lines

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4726288U (ja) * 1971-04-12 1972-11-24

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3232192A (en) * 1963-02-20 1966-02-01 Eastman Kodak Co Photographic exposure measuring device
US3582220A (en) * 1968-02-21 1971-06-01 Asahi Optical Co Ltd Light contrast meter for measuring the difference between maximum light intensity and immediately incident light intensity or other intensity
DE1942285A1 (de) * 1969-08-20 1971-03-04 Agfa Gevaert Ag Fotografische Kamera mit einer elektronischen Belichtungssteuereinrichtung

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4726288U (ja) * 1971-04-12 1972-11-24

Also Published As

Publication number Publication date
DE2203506B2 (de) 1974-03-14
FR2126280A1 (ja) 1972-10-06
GB1361348A (en) 1974-07-24
US3781119A (en) 1973-12-25
DE2203506A1 (de) 1972-09-07
DE2203506C3 (ja) 1974-10-24
FR2126280B1 (ja) 1976-06-11

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