JPS56116021A - Blade driver of camera - Google Patents

Blade driver of camera

Info

Publication number
JPS56116021A
JPS56116021A JP1918280A JP1918280A JPS56116021A JP S56116021 A JPS56116021 A JP S56116021A JP 1918280 A JP1918280 A JP 1918280A JP 1918280 A JP1918280 A JP 1918280A JP S56116021 A JPS56116021 A JP S56116021A
Authority
JP
Japan
Prior art keywords
pawl
camera
arrow
blades
operation ring
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
JP1918280A
Other languages
Japanese (ja)
Inventor
Minoru Kawada
Koji Tanaka
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.)
Mamiya Camera Co Ltd
Original Assignee
Mamiya Camera 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 Mamiya Camera Co Ltd filed Critical Mamiya Camera Co Ltd
Priority to JP1918280A priority Critical patent/JPS56116021A/en
Publication of JPS56116021A publication Critical patent/JPS56116021A/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
    • G03B9/00—Exposure-making shutters; Diaphragms
    • G03B9/08—Shutters
    • G03B9/10—Blade or disc rotating or pivoting about axis normal to its plane
    • G03B9/18—More than two members
    • G03B9/22—More than two members each moving in one direction to open and then in opposite direction to close, e.g. iris type

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Diaphragms For Cameras (AREA)
  • Shutters For Cameras (AREA)

Abstract

PURPOSE:To drive shutter blades remotely and to simplify the structure of a camera, by driving the aperture and shutter blades of the camera through reciprocal vibration of an electromagnetic driver. CONSTITUTION:With the release button pushed, a pulse signal is supplied to electromagnetic driver 9 in the lens barrel, and then blade feed pawl 10 reciprocates as shown by arrow A-B. As pawl 10 moves in the direction of arrow A, its tip part 10a drives ratchet wheel 6a to swivel aperture blade operation ring 6 against spring 7 by one tooth. Blade operation ring 6 is hooked by prevention pawl 11. This operation is repeated to swivel aperture blades 8 on pin 8a counterclockwise, stopping down the lens. With a reverse pulse, rear end 10b of pawl 10 projects as shown by arrow C, and then reverse prevention pawl 11 is driven as shown by arrow D to separate from ratchet 6, swiveling blade operation ring 6 clockwise. Consequently, the blades can remotely be driven and the structure of the camera can be simplified.
JP1918280A 1980-02-20 1980-02-20 Blade driver of camera Pending JPS56116021A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1918280A JPS56116021A (en) 1980-02-20 1980-02-20 Blade driver of camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1918280A JPS56116021A (en) 1980-02-20 1980-02-20 Blade driver of camera

Publications (1)

Publication Number Publication Date
JPS56116021A true JPS56116021A (en) 1981-09-11

Family

ID=11992190

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1918280A Pending JPS56116021A (en) 1980-02-20 1980-02-20 Blade driver of camera

Country Status (1)

Country Link
JP (1) JPS56116021A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS614933U (en) * 1984-06-13 1986-01-13 日本電産コパル株式会社 Electromagnetic shutter mechanism

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS614933U (en) * 1984-06-13 1986-01-13 日本電産コパル株式会社 Electromagnetic shutter mechanism
JPH0414736Y2 (en) * 1984-06-13 1992-04-02

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