NL7217228A - - Google Patents

Info

Publication number
NL7217228A
NL7217228A NL7217228A NL7217228A NL7217228A NL 7217228 A NL7217228 A NL 7217228A NL 7217228 A NL7217228 A NL 7217228A NL 7217228 A NL7217228 A NL 7217228A NL 7217228 A NL7217228 A NL 7217228A
Authority
NL
Netherlands
Application number
NL7217228A
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
Publication of NL7217228A publication Critical patent/NL7217228A/xx

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/44—Electric circuits
    • 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)
  • Spectroscopy & Molecular Physics (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Exposure Control For Cameras (AREA)
NL7217228A 1972-04-12 1972-12-18 NL7217228A (en:Method)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2217659A DE2217659C3 (de) 1972-04-12 1972-04-12 Belichtungsmefigerät

Publications (1)

Publication Number Publication Date
NL7217228A true NL7217228A (en:Method) 1973-10-16

Family

ID=5841746

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7217228A NL7217228A (en:Method) 1972-04-12 1972-12-18

Country Status (5)

Country Link
US (1) US3873827A (en:Method)
JP (1) JPS5721643B2 (en:Method)
BE (1) BE798152A (en:Method)
DE (1) DE2217659C3 (en:Method)
NL (1) NL7217228A (en:Method)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4034384A (en) * 1973-01-24 1977-07-05 Canon Kabushiki Kaisha Exposure meter circuit of camera with matching network for flash device
DE2639199C2 (de) * 1975-09-01 1983-12-01 Nippon Kogaku K.K., Tokyo TTL-Meßvorrichtung für eine einäugige Spiegelreflexkamera
JPS6024410B2 (ja) * 1976-06-28 1985-06-12 日本電気株式会社 光電変換回路
US4636053A (en) * 1978-02-24 1987-01-13 Canon Kabushiki Kaisha Distance detecting device
US5541706A (en) * 1992-10-22 1996-07-30 Nikon Corporation Exposure calculation device for a camera

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3116673A (en) * 1961-07-27 1964-01-07 Bogopolsky Raphael Automatic regulating device for the lighting of a photo-sensitive film during filming
US3424908A (en) * 1966-10-19 1969-01-28 Gen Electric Amplifier for photocell
US3605030A (en) * 1967-06-26 1971-09-14 Beckman Instruments Inc High sensitivity amplifier with peak detector and storage means
DE2006025A1 (de) * 1970-02-11 1971-08-26 Leitz Ernst Gmbh Schaltungsanordnung fur Behchtungs messer
US3670184A (en) * 1970-02-13 1972-06-13 Tokyo Shibaura Electric Co Light sensitive amplifier circuit having improved feedback arrangement
FR2138340B1 (en:Method) * 1971-05-24 1973-05-25 Trt Telecom Radio Electr
US3723651A (en) * 1971-12-27 1973-03-27 Rca Corp Optically-scanned liquid-crystal projection display

Also Published As

Publication number Publication date
DE2217659C3 (de) 1978-09-21
BE798152A (fr) 1973-10-12
DE2217659B2 (de) 1978-02-02
JPS5721643B2 (en:Method) 1982-05-08
DE2217659A1 (de) 1973-10-18
JPS4918079A (en:Method) 1974-02-18
US3873827A (en) 1975-03-25

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Legal Events

Date Code Title Description
CNR Transfer of rights (patent application after its laying open for public inspection)

Free format text: ERNST LEITZ WETZLAR GMBH.

BA A request for search or an international-type search has been filed
BB A search report has been drawn up
BV The patent application has lapsed