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JPS57108834A - Strobe light emitter of automatic dimming - Google Patents

Strobe light emitter of automatic dimming

Info

Publication number
JPS57108834A
JPS57108834A JP55184629A JP18462980A JPS57108834A JP S57108834 A JPS57108834 A JP S57108834A JP 55184629 A JP55184629 A JP 55184629A JP 18462980 A JP18462980 A JP 18462980A JP S57108834 A JPS57108834 A JP S57108834A
Authority
JP
Japan
Prior art keywords
thyristor
turned
resistance
capacitor
photometric circuit
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
JP55184629A
Other languages
Japanese (ja)
Inventor
Satoshi Funada
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.)
FUJIMI KOKI
FUJIMI KOKI KK
FUJIMI KOUKI KK
Original Assignee
FUJIMI KOKI
FUJIMI KOKI KK
FUJIMI KOUKI 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 FUJIMI KOKI, FUJIMI KOKI KK, FUJIMI KOUKI KK filed Critical FUJIMI KOKI
Priority to JP55184629A priority Critical patent/JPS57108834A/en
Publication of JPS57108834A publication Critical patent/JPS57108834A/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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Stroboscope Apparatuses (AREA)
  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)

Abstract

PURPOSE:To improve the response characteristic of a photometric circuit, by generating the power source voltage for the photometric circuit simultaneously with starting a switching element connected in series to a discharge tube. CONSTITUTION:When a synchro contact 6 is closed, a discharge tube 28 is triggerred, and the charge of a capacitor 16 is discharged through the contact 6, a resistance 22, and a resistance 18. Then, a thyristor 24 is turned on, and power is supplied from a main capacitor 2 to a photometric circuit, which is indicated by the broken line including a photo transistor 48, by this turning-on. Simultaneously, the discharge light emission is started. When a thyristor 42 is turned on by a prescribed receiving light integration, a thyristor 46 is turned on also, and the thyristor 24 is turned off by a reverse voltage which is generated in a resistance 30 by discharging of a capacitor 32 to stop the light emission.
JP55184629A 1980-12-25 1980-12-25 Strobe light emitter of automatic dimming Pending JPS57108834A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55184629A JPS57108834A (en) 1980-12-25 1980-12-25 Strobe light emitter of automatic dimming

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55184629A JPS57108834A (en) 1980-12-25 1980-12-25 Strobe light emitter of automatic dimming

Publications (1)

Publication Number Publication Date
JPS57108834A true JPS57108834A (en) 1982-07-07

Family

ID=16156567

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55184629A Pending JPS57108834A (en) 1980-12-25 1980-12-25 Strobe light emitter of automatic dimming

Country Status (1)

Country Link
JP (1) JPS57108834A (en)

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