JPS55129328A - Strobe device - Google Patents

Strobe device

Info

Publication number
JPS55129328A
JPS55129328A JP3751379A JP3751379A JPS55129328A JP S55129328 A JPS55129328 A JP S55129328A JP 3751379 A JP3751379 A JP 3751379A JP 3751379 A JP3751379 A JP 3751379A JP S55129328 A JPS55129328 A JP S55129328A
Authority
JP
Japan
Prior art keywords
traveling
transistor
switch
exposure
curtain
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
JP3751379A
Other languages
Japanese (ja)
Inventor
Kazunori Mizogami
Yukio Nakajima
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.)
Olympus Corp
Original Assignee
Olympus Optical Co Ltd
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 Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP3751379A priority Critical patent/JPS55129328A/en
Publication of JPS55129328A publication Critical patent/JPS55129328A/en
Pending legal-status Critical Current

Links

Landscapes

  • Exposure Control For Cameras (AREA)
  • Stroboscope Apparatuses (AREA)
  • Shutter-Related Mechanisms (AREA)

Abstract

PURPOSE: To obviate the emission of flash when exposure arrives at correct quantity prior the ending of front curtain traveling by opening the trigger circuit for stroge in response to the traveling start of the rear curtain by a switching means.
CONSTITUTION: When the front curtain runs and exposure becomes correct quantity, the photo detecting part 8 of a shutter control circuit 2 causes a shutter rear curtain controlling electromagnet Mg to go OFF by way of an electronic shutter circuit 6 so that the rear curtain starts traveling before the front curtain ends traveling and an X point switch SW2 closes. As a result of this, the conduction of the transistor Tr is prevented by the Zener diode Z, etc. connected to the base and emitter of the transistor Tr by way of resistances 6, 5 at the same Zener voltage as the Zener diode Z1 connected together with a series resistance R4 to both ends of a discharge tube V whose ctahode is connected to the emitter of the transistor Tr, so that the discharge tube V is not triggered through SCR and the flash emission is prevented, at the closing of the switch SW2. The flash emission is performed only when correct exposure is not reached at the closing of the switch SW2.
COPYRIGHT: (C)1980,JPO&Japio
JP3751379A 1979-03-29 1979-03-29 Strobe device Pending JPS55129328A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3751379A JPS55129328A (en) 1979-03-29 1979-03-29 Strobe device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3751379A JPS55129328A (en) 1979-03-29 1979-03-29 Strobe device

Publications (1)

Publication Number Publication Date
JPS55129328A true JPS55129328A (en) 1980-10-07

Family

ID=12499610

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3751379A Pending JPS55129328A (en) 1979-03-29 1979-03-29 Strobe device

Country Status (1)

Country Link
JP (1) JPS55129328A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50137136A (en) * 1974-04-16 1975-10-31

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50137136A (en) * 1974-04-16 1975-10-31

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