JPS5225629A - Exposure control means - Google Patents

Exposure control means

Info

Publication number
JPS5225629A
JPS5225629A JP50101412A JP10141275A JPS5225629A JP S5225629 A JPS5225629 A JP S5225629A JP 50101412 A JP50101412 A JP 50101412A JP 10141275 A JP10141275 A JP 10141275A JP S5225629 A JPS5225629 A JP S5225629A
Authority
JP
Japan
Prior art keywords
control means
exposure control
shutter
polarity
brightness
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
JP50101412A
Other languages
Japanese (ja)
Inventor
Hiroshi Iwata
Tetsuo Yamaoka
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.)
West Electric Co Ltd
Original Assignee
West Electric 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 West Electric Co Ltd filed Critical West Electric Co Ltd
Priority to JP50101412A priority Critical patent/JPS5225629A/en
Publication of JPS5225629A publication Critical patent/JPS5225629A/en
Pending legal-status Critical Current

Links

Landscapes

  • Exposure Control For Cameras (AREA)
  • Shutters For Cameras (AREA)

Abstract

PURPOSE: To enable a shutter actuation with no delay time with a little electric power by actuating a shutter blade with an electromagnetic magnet which changes its polarity for a period of time corresponding to the brightness of an object.
COPYRIGHT: (C)1977,JPO&Japio
JP50101412A 1975-08-20 1975-08-20 Exposure control means Pending JPS5225629A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50101412A JPS5225629A (en) 1975-08-20 1975-08-20 Exposure control means

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50101412A JPS5225629A (en) 1975-08-20 1975-08-20 Exposure control means

Publications (1)

Publication Number Publication Date
JPS5225629A true JPS5225629A (en) 1977-02-25

Family

ID=14299984

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50101412A Pending JPS5225629A (en) 1975-08-20 1975-08-20 Exposure control means

Country Status (1)

Country Link
JP (1) JPS5225629A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62195630A (en) * 1986-02-24 1987-08-28 Canon Inc Electromagnetic shutter

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5081137A (en) * 1973-11-16 1975-07-01

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5081137A (en) * 1973-11-16 1975-07-01

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62195630A (en) * 1986-02-24 1987-08-28 Canon Inc Electromagnetic shutter

Similar Documents

Publication Publication Date Title
JPS51116432A (en) Direction control valve operated by electromagnetic power
JPS5293323A (en) Electromagnetic shutter
JPS5237428A (en) Automatic exposure control device
JPS5225629A (en) Exposure control means
JPS5236024A (en) Actuating device for camera
JPS5219528A (en) Electromagnetic diaphragm control system for the camera
JPS51138968A (en) An electric hammer
JPS53148921A (en) Power unit
JPS5241527A (en) Electromagnetic shutter
JPS51143348A (en) Apparatus for focusing a light beam
JPS5368375A (en) Operation controlling system
JPS52107827A (en) Electromagnetic shutter
JPS5399410A (en) Controller for thyristor motor
JPS5235629A (en) Shutted actuating device for single lens reflex camera
JPS5266192A (en) Output power distribution controlling device
JPS53130018A (en) Electromagnetic shutter device
JPS5213730A (en) Electronic printer control unit
JPS52119929A (en) Exposure control device
JPS5393242A (en) Rectilinear propagation drive
JPS5437205A (en) Swivel driving motors
JPS5210936A (en) Output adjusting device for electronic oven
JPS5398604A (en) Magnetic hold relay with lock mechanism for electric switch machine
JPS5353317A (en) High speed second time controllable lens shutter
JPS51150326A (en) Open-shut mechanism for the programmed shutter
JPS51123144A (en) Electromagnetic release camera