JPS5593133A - Digitizing light for electronic flash and circuit therefor - Google Patents

Digitizing light for electronic flash and circuit therefor

Info

Publication number
JPS5593133A
JPS5593133A JP16673679A JP16673679A JPS5593133A JP S5593133 A JPS5593133 A JP S5593133A JP 16673679 A JP16673679 A JP 16673679A JP 16673679 A JP16673679 A JP 16673679A JP S5593133 A JPS5593133 A JP S5593133A
Authority
JP
Japan
Prior art keywords
electronic flash
circuit therefor
digitizing light
digitizing
light
Prior art date
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
JP16673679A
Other languages
English (en)
Inventor
Tsutomu Ogawa Furanshisu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rollei of America Inc
Original Assignee
Rollei of America Inc
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 Rollei of America Inc filed Critical Rollei of America Inc
Publication of JPS5593133A publication Critical patent/JPS5593133A/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
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/02—Illuminating scene
    • G03B15/03—Combinations of cameras with lighting apparatus; Flash units
    • G03B15/05—Combinations of cameras with electronic flash apparatus; Electronic flash units
    • 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
    • G03B2215/00—Special procedures for taking photographs; Apparatus therefor
    • G03B2215/05—Combinations of cameras with electronic flash units

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Stroboscope Apparatuses (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Exposure Control For Cameras (AREA)
  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
  • Analogue/Digital Conversion (AREA)
JP16673679A 1979-01-04 1979-12-21 Digitizing light for electronic flash and circuit therefor Pending JPS5593133A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/000,999 US4249109A (en) 1979-01-04 1979-01-04 Light digitizing circuit for an electronic flash device

Publications (1)

Publication Number Publication Date
JPS5593133A true JPS5593133A (en) 1980-07-15

Family

ID=21693905

Family Applications (2)

Application Number Title Priority Date Filing Date
JP16673679A Pending JPS5593133A (en) 1979-01-04 1979-12-21 Digitizing light for electronic flash and circuit therefor
JP57216772A Expired JPS5933842B2 (ja) 1979-01-04 1982-12-10 光デイジタル化回路

Family Applications After (1)

Application Number Title Priority Date Filing Date
JP57216772A Expired JPS5933842B2 (ja) 1979-01-04 1982-12-10 光デイジタル化回路

Country Status (6)

Country Link
US (1) US4249109A (ja)
JP (2) JPS5593133A (ja)
CA (1) CA1124314A (ja)
DE (1) DE2951128A1 (ja)
FR (1) FR2446049A1 (ja)
GB (2) GB2039064B (ja)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4333718A (en) * 1980-01-16 1982-06-08 Rollei Of America, Inc. Photographic flash control circuitry having selectively operable internal sensor
SE441867B (sv) * 1984-04-05 1985-11-11 Ericsson Telefon Ab L M Forfarande och anordning for metning av effekten hos infallande ljus
US4843419A (en) * 1987-04-21 1989-06-27 Olympus Optical Co., Ltd. Light quantity measuring system
JPH0656325B2 (ja) * 1987-12-15 1994-07-27 株式会社精工舎 測光回路
JPH06308585A (ja) * 1993-04-27 1994-11-04 Nikon Corp 光電流周波数変換回路
US5497001A (en) * 1994-09-15 1996-03-05 Dittler Brothers Incorporated Flash tube devices
US6295413B1 (en) 1999-02-24 2001-09-25 Nikon Corporation Digitizing circuit of light amount receiving from strobe and control circuit of light amount emitted from strobe
US7476840B2 (en) * 2006-05-08 2009-01-13 Slicex, Inc. Sensing light and sensing the state of a memory cell an aid of a switch controlled by a schmidt trigger
DE102013112553A1 (de) * 2013-11-14 2015-06-03 Odos Imaging Ltd. Beleuchtungsvorrichtung und Verfahren zum Beleuchten eines Objekts

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2232373A (en) * 1938-08-08 1941-02-18 Lithographic Technical Foundat Integrating light meter apparatus
GB1038454A (en) * 1962-12-20 1966-08-10 British Telecomm Res Ltd Improvements in control devices responsive to solar radiation
US3269287A (en) * 1963-07-22 1966-08-30 Clarence S Ost Electronic mechanical system for integrating radiant energy
US3509422A (en) * 1967-10-31 1970-04-28 Research Corp Automatic photographic fill-in flash circuit
US3783336A (en) * 1968-02-13 1974-01-01 Ponder & Best Automatic photoflash devices
GB1275650A (en) * 1968-07-12 1972-05-24 Asahi Optical Co Ltd Exposure and shutter control systems for cameras
US3651744A (en) * 1969-01-13 1972-03-28 Copal Co Ltd Photographic camera
DE2330734A1 (de) * 1973-06-16 1975-01-09 Agfa Gevaert Ag Elektronische belichtungssteuervorrichtung
US4035814A (en) * 1974-09-02 1977-07-12 Asahi Kogaku Kogyo Kabushiki Kaisha Electronic flash apparatus controlled by a digital memory system

Also Published As

Publication number Publication date
GB2115165A (en) 1983-09-01
FR2446049A1 (fr) 1980-08-01
DE2951128C2 (ja) 1990-10-04
JPS5933842B2 (ja) 1984-08-18
FR2446049B1 (ja) 1984-01-27
DE2951128A1 (de) 1980-07-17
GB2115165B (en) 1984-02-01
GB2039064B (en) 1983-07-20
US4249109A (en) 1981-02-03
JPS58113727A (ja) 1983-07-06
CA1124314A (en) 1982-05-25
GB2039064A (en) 1980-07-30

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