JPS525644Y2 - - Google Patents

Info

Publication number
JPS525644Y2
JPS525644Y2 JP1972100203U JP10020372U JPS525644Y2 JP S525644 Y2 JPS525644 Y2 JP S525644Y2 JP 1972100203 U JP1972100203 U JP 1972100203U JP 10020372 U JP10020372 U JP 10020372U JP S525644 Y2 JPS525644 Y2 JP S525644Y2
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.)
Expired
Application number
JP1972100203U
Other languages
Japanese (ja)
Other versions
JPS4958343U (en
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 JP1972100203U priority Critical patent/JPS525644Y2/ja
Priority to US390711A priority patent/US3919593A/en
Publication of JPS4958343U publication Critical patent/JPS4958343U/ja
Application granted granted Critical
Publication of JPS525644Y2 publication Critical patent/JPS525644Y2/ja
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/30—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp
    • H05B41/32—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp for single flash operation
    • H05B41/325—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp for single flash operation by measuring the incident light

Landscapes

  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
  • Exposure Control For Cameras (AREA)
  • Stroboscope Apparatuses (AREA)
JP1972100203U 1972-08-28 1972-08-28 Expired JPS525644Y2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP1972100203U JPS525644Y2 (en) 1972-08-28 1972-08-28
US390711A US3919593A (en) 1972-08-28 1973-08-23 Flash safety device in a flash apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1972100203U JPS525644Y2 (en) 1972-08-28 1972-08-28

Publications (2)

Publication Number Publication Date
JPS4958343U JPS4958343U (en) 1974-05-23
JPS525644Y2 true JPS525644Y2 (en) 1977-02-05

Family

ID=14267733

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1972100203U Expired JPS525644Y2 (en) 1972-08-28 1972-08-28

Country Status (2)

Country Link
US (1) US3919593A (en)
JP (1) JPS525644Y2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4047194A (en) * 1974-05-08 1977-09-06 Canon Kabushiki Kaisha Camera system with means for automatically switching to flash operation
US3969737A (en) * 1974-08-01 1976-07-13 Eastman Kodak Company Electronic flash unit for cameras adapted to receive flashbulbs
JPS5243421A (en) * 1975-10-02 1977-04-05 Canon Inc Flash device
US4156565A (en) * 1978-03-23 1979-05-29 Polaroid Corporation Control system for flash-illuminated automatic focusing camera
FR2450028A1 (en) * 1979-02-20 1980-09-19 Fuji Photo Optical Co Ltd Automatic camera flash unit - has light measuring operational amplifier at input, with parallel diode having logarithmic characteristic
JPS56122018A (en) * 1980-02-29 1981-09-25 Olympus Optical Co Ltd Power supply circuit of stroboscopic device

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3593061A (en) * 1968-02-23 1971-07-13 Nippon Kogaku Kk Apparatus for increasing the lighting of photoflash discharge lamps
US3714872A (en) * 1969-04-18 1973-02-06 Canon Kk Photographic flash exposure control system
US3819983A (en) * 1970-09-08 1974-06-25 Polaroid Corp Photoflash power supply
US3690237A (en) * 1970-09-22 1972-09-12 Zydichi Fuwa Electronic flashlight device for flashlight photography
DE2160720C3 (en) * 1970-12-08 1975-06-12 Canon K.K., Tokio Camera with an exposure metering circuit and an electronic flash unit
JPS5419778B1 (en) * 1971-06-18 1979-07-18
DE2152140C2 (en) * 1971-10-20 1973-11-29 Metz Apparatewerke, Inh. Paul Metz, 8510 Fuerth Electronic flash unit with automatic light control
US3751714A (en) * 1971-11-24 1973-08-07 D Cooper Electronic photoflash unit
US3764849A (en) * 1972-03-24 1973-10-09 Minolta Camera Kk Electronic flash charging and triggering circuitry
US3778672A (en) * 1972-07-27 1973-12-11 Ponder & Best Audible alert signal for an electronic flash unit

Also Published As

Publication number Publication date
US3919593A (en) 1975-11-11
JPS4958343U (en) 1974-05-23

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