JPS55101923A - Electromagnetically driven shutter - Google Patents

Electromagnetically driven shutter

Info

Publication number
JPS55101923A
JPS55101923A JP990979A JP990979A JPS55101923A JP S55101923 A JPS55101923 A JP S55101923A JP 990979 A JP990979 A JP 990979A JP 990979 A JP990979 A JP 990979A JP S55101923 A JPS55101923 A JP S55101923A
Authority
JP
Japan
Prior art keywords
sector
patterns
overall length
radius
effective
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.)
Granted
Application number
JP990979A
Other languages
Japanese (ja)
Other versions
JPS6151779B2 (en
Inventor
Michiro Hirohata
Yukio Ogawa
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP990979A priority Critical patent/JPS55101923A/en
Priority to DE3003462A priority patent/DE3003462C2/en
Publication of JPS55101923A publication Critical patent/JPS55101923A/en
Priority to US06/353,507 priority patent/US4415252A/en
Publication of JPS6151779B2 publication Critical patent/JPS6151779B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Shutters For Cameras (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Abstract

PURPOSE: To enhance efficiency and achieve the lighter weight and lower cost of the device by shortening the overall length of conductor patterns disposed on a sector ring and increasing the ratio that the effective pattern parts occupy with respect to the overall length.
CONSTITUTION: Coil-form conductor patterns are printed on the front and back of a sector ring 2 and when drive current is flowed to these, the sector ring 2 is rotated by stationary magnets 1a, 1b to drive a shutter blade 3. Thereupon, when the one which the sector patterns are on the radius centering at the optical axis O and the one in which they are inclined to a certain degree in the centerline direction of the sector patterns from the radius are compared, the latter becomes shorter in its overall length. If it is assumed that the effective length in the radial line direction does not change, the ratio of the effective length to the overall length becomes larger with the one in which the sector patterns are inclined in the centerline direction of the sector patterns from the radius, hence the efficiency thereof may be improved.
COPYRIGHT: (C)1980,JPO&Japio
JP990979A 1979-01-31 1979-01-31 Electromagnetically driven shutter Granted JPS55101923A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP990979A JPS55101923A (en) 1979-01-31 1979-01-31 Electromagnetically driven shutter
DE3003462A DE3003462C2 (en) 1979-01-31 1980-01-31 Electrodynamic drive for a camera shutter
US06/353,507 US4415252A (en) 1979-01-31 1982-03-01 Electromagnetically operated shutter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP990979A JPS55101923A (en) 1979-01-31 1979-01-31 Electromagnetically driven shutter

Publications (2)

Publication Number Publication Date
JPS55101923A true JPS55101923A (en) 1980-08-04
JPS6151779B2 JPS6151779B2 (en) 1986-11-10

Family

ID=11733228

Family Applications (1)

Application Number Title Priority Date Filing Date
JP990979A Granted JPS55101923A (en) 1979-01-31 1979-01-31 Electromagnetically driven shutter

Country Status (1)

Country Link
JP (1) JPS55101923A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61169477U (en) * 1985-04-04 1986-10-21

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6316482U (en) * 1986-07-18 1988-02-03
JPS6320476U (en) * 1986-07-24 1988-02-10
JPH03225899A (en) * 1990-01-31 1991-10-04 Nippon Avionics Co Ltd Multi-layered printed wiring board

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4945312A (en) * 1972-09-11 1974-04-30
JPS5076302U (en) * 1973-06-25 1975-07-03
JPS5374028A (en) * 1976-11-04 1978-07-01 Olympus Optical Co Ltd Diaphragm device for camera
JPS53130017A (en) * 1977-04-20 1978-11-13 Olympus Optical Co Ltd Electromagnetic shutter control device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4945312A (en) * 1972-09-11 1974-04-30
JPS5076302U (en) * 1973-06-25 1975-07-03
JPS5374028A (en) * 1976-11-04 1978-07-01 Olympus Optical Co Ltd Diaphragm device for camera
JPS53130017A (en) * 1977-04-20 1978-11-13 Olympus Optical Co Ltd Electromagnetic shutter control device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61169477U (en) * 1985-04-04 1986-10-21

Also Published As

Publication number Publication date
JPS6151779B2 (en) 1986-11-10

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