JPS57128327A - Automatic dimming type electronic flash device - Google Patents

Automatic dimming type electronic flash device

Info

Publication number
JPS57128327A
JPS57128327A JP56013749A JP1374981A JPS57128327A JP S57128327 A JPS57128327 A JP S57128327A JP 56013749 A JP56013749 A JP 56013749A JP 1374981 A JP1374981 A JP 1374981A JP S57128327 A JPS57128327 A JP S57128327A
Authority
JP
Japan
Prior art keywords
flash
stop signal
terminal
external
switching element
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
JP56013749A
Other languages
Japanese (ja)
Inventor
Kiwa Iida
Hiroshi Hasegawa
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.)
Nikon Corp
Original Assignee
Nikon Corp
Nippon Kogaku KK
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 Nikon Corp, Nippon Kogaku KK filed Critical Nikon Corp
Priority to JP56013749A priority Critical patent/JPS57128327A/en
Publication of JPS57128327A publication Critical patent/JPS57128327A/en
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
    • G03B2215/0514—Separate unit
    • G03B2215/0557—Multiple units, e.g. slave-unit

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Stroboscope Apparatuses (AREA)

Abstract

PURPOSE:To make connection of a plurality of flashes capable of free extension easy and simple, by supplying an external flash stop signal to a flash light stop switching element and an output terminal. CONSTITUTION:When a synchronizing switch 1 is closed, flash tubes of a main flash SI and of extended flashes SII, SIII are flashed. The object reflection light by flash is detected at photodetector B of the device SI, a flash stop signal from a flash controlling circuit C triggers a thyristor 30 of a switching element via an external flash signal terminal 19, the flash of the device SI is automatically stopped and the flash stop signal via an amplifier G is applied to output terminals 21, 22. This external flash stop signal is given to an external terminal 28 which is out of contact with a terminal 26 of the device SII and triggers a thrystor 40 of a switching element and is applied to output terminals 29, 30 via the amplifier G. The device SII is distinguished and similarly the device SIII is also distinguished. Since no flash stop signal distributor is required, the connection of a plurality of falsh devices capable of free extension can be made simply and easily.
JP56013749A 1981-02-03 1981-02-03 Automatic dimming type electronic flash device Pending JPS57128327A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56013749A JPS57128327A (en) 1981-02-03 1981-02-03 Automatic dimming type electronic flash device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56013749A JPS57128327A (en) 1981-02-03 1981-02-03 Automatic dimming type electronic flash device

Publications (1)

Publication Number Publication Date
JPS57128327A true JPS57128327A (en) 1982-08-09

Family

ID=11841894

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56013749A Pending JPS57128327A (en) 1981-02-03 1981-02-03 Automatic dimming type electronic flash device

Country Status (1)

Country Link
JP (1) JPS57128327A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5570148A (en) * 1991-07-30 1996-10-29 Nikon Corporation Flash control apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5570148A (en) * 1991-07-30 1996-10-29 Nikon Corporation Flash control apparatus

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