JPS57135932A - Aperture blade driving device - Google Patents

Aperture blade driving device

Info

Publication number
JPS57135932A
JPS57135932A JP2126281A JP2126281A JPS57135932A JP S57135932 A JPS57135932 A JP S57135932A JP 2126281 A JP2126281 A JP 2126281A JP 2126281 A JP2126281 A JP 2126281A JP S57135932 A JPS57135932 A JP S57135932A
Authority
JP
Japan
Prior art keywords
cam
crysanthemum
turned
driving device
shaped metal
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
JP2126281A
Other languages
Japanese (ja)
Inventor
Koji Tanaka
Minoru Kawada
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 KOUKI KK
Mamiya Camera Co Ltd
Original Assignee
MAMIYA KOUKI KK
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 KOUKI KK, Mamiya Camera Co Ltd filed Critical MAMIYA KOUKI KK
Priority to JP2126281A priority Critical patent/JPS57135932A/en
Publication of JPS57135932A publication Critical patent/JPS57135932A/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
    • G03B9/02—Diaphragms
    • G03B9/06—Two or more co-operating pivoted blades, e.g. iris type

Landscapes

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

Abstract

PURPOSE:To control the reciprocating motion of a blade with the device of a simple operation, by linking a stopping-down member to a cam member, which has a gently inclined cam for stopping-down and a steeply inclined cam for opening reset, in a pulse-driven stop device. CONSTITUTION:An aperture blade 13 is held between a blade seat 3 and a crysanthemum-shaped metal fixture 2. An intermediate lever 1 intermediates between the crysanthemum-shaped metal fixture 2 and a driving cam 5. The cam 5 and a gear 18 is in one body; and when an actuator 17 of an electromagnetic driving device 16 is reciprocated once by a pulse, the gear is turned by a quantity corresponding to one frame. A pin 8 of the intermediate lever is energized to be brought into contact with the cam surface; and when the lever is turned by the rotation of the cam , the crysanthemum-shaped metal fixture is turned reciprocatively to open and close the stop. Since the opening is controlled by a pulse number and the electromagnetic driving device repeats the same operation in opening as well as closing operations, the mechanism and the control means are simplified.
JP2126281A 1981-02-16 1981-02-16 Aperture blade driving device Pending JPS57135932A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2126281A JPS57135932A (en) 1981-02-16 1981-02-16 Aperture blade driving device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2126281A JPS57135932A (en) 1981-02-16 1981-02-16 Aperture blade driving device

Publications (1)

Publication Number Publication Date
JPS57135932A true JPS57135932A (en) 1982-08-21

Family

ID=12050177

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2126281A Pending JPS57135932A (en) 1981-02-16 1981-02-16 Aperture blade driving device

Country Status (1)

Country Link
JP (1) JPS57135932A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7047105B2 (en) 2001-02-16 2006-05-16 Sanyo Electric Co., Ltd. Robot controlled by wireless signals
US7170389B2 (en) 2001-04-09 2007-01-30 Vishay Dale Electronics, Inc. Apparatus for tantalum pentoxide moisture barrier in film resistors
EP3731013A4 (en) * 2017-12-19 2021-08-18 Nittoh Inc. Diaphragm device and lens barrel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7047105B2 (en) 2001-02-16 2006-05-16 Sanyo Electric Co., Ltd. Robot controlled by wireless signals
US7170389B2 (en) 2001-04-09 2007-01-30 Vishay Dale Electronics, Inc. Apparatus for tantalum pentoxide moisture barrier in film resistors
EP3731013A4 (en) * 2017-12-19 2021-08-18 Nittoh Inc. Diaphragm device and lens barrel

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