JPS55124122A - High-speed shutter limiter of electric shutter - Google Patents

High-speed shutter limiter of electric shutter

Info

Publication number
JPS55124122A
JPS55124122A JP1562779A JP1562779A JPS55124122A JP S55124122 A JPS55124122 A JP S55124122A JP 1562779 A JP1562779 A JP 1562779A JP 1562779 A JP1562779 A JP 1562779A JP S55124122 A JPS55124122 A JP S55124122A
Authority
JP
Japan
Prior art keywords
shutter
travel
level
trigger signal
rear 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
JP1562779A
Other languages
Japanese (ja)
Inventor
Kazunori Mizogami
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 JP1562779A priority Critical patent/JPS55124122A/en
Publication of JPS55124122A publication Critical patent/JPS55124122A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To stabilize operations by supplying the shutter high-speed limit signal to control circuits by the semiconductor gate switches operated by the trigger signal generated in response to shutter release, etc.
CONSTITUTION: Transmission gate switches T1, T2 are turned ON and OFF respectively by the trigger signal of the H level generated by film-winding and the output of a NOR gate IC5 become of L level to stop travel of the rear curtain. Next, when the travel of the front curtain is started as the release button is pushed, the trigger signal becomes of L level, causing the travel of the rear curtain to start. On the other hand, when the transmission gate switch T1 goes OFF, the input of an inverter IC2 goes through a time constant circuit R3 and C1 and after the delay time corresponding to the time constant of the circuit, it inverts the output of the inverter IC4 from H to L level, thereby controlling the travel of the rear curtain. This delay time shows the limit of the high-speed shutter. By using the electronic circuits such as delay circuit in this way, the operations may be stabilized.
COPYRIGHT: (C)1980,JPO&Japio
JP1562779A 1979-02-14 1979-02-14 High-speed shutter limiter of electric shutter Pending JPS55124122A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1562779A JPS55124122A (en) 1979-02-14 1979-02-14 High-speed shutter limiter of electric shutter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1562779A JPS55124122A (en) 1979-02-14 1979-02-14 High-speed shutter limiter of electric shutter

Publications (1)

Publication Number Publication Date
JPS55124122A true JPS55124122A (en) 1980-09-25

Family

ID=11893942

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1562779A Pending JPS55124122A (en) 1979-02-14 1979-02-14 High-speed shutter limiter of electric shutter

Country Status (1)

Country Link
JP (1) JPS55124122A (en)

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