JPS56130728A - Shutter release controlling circuit of single-lens reflex camera - Google Patents

Shutter release controlling circuit of single-lens reflex camera

Info

Publication number
JPS56130728A
JPS56130728A JP3462580A JP3462580A JPS56130728A JP S56130728 A JPS56130728 A JP S56130728A JP 3462580 A JP3462580 A JP 3462580A JP 3462580 A JP3462580 A JP 3462580A JP S56130728 A JPS56130728 A JP S56130728A
Authority
JP
Japan
Prior art keywords
mirror
photographing
blades
shutter
aperture
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
JP3462580A
Other languages
Japanese (ja)
Inventor
Tomio Kurosu
Koichi Okazaki
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.)
Nidec Precision Corp
Original Assignee
Nidec Copal Corp
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 Nidec Copal Corp filed Critical Nidec Copal Corp
Priority to JP3462580A priority Critical patent/JPS56130728A/en
Publication of JPS56130728A publication Critical patent/JPS56130728A/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
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/38—Releasing-devices separate from shutter

Landscapes

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

Abstract

PURPOSE:To control adequately an open release period according to a photographic mode, by actuating a mirror-up circuit and delay circuit by driving respective motors with signals generated through release operation so that while shutter blades are closed, aperture blades are stopped down to a prescribed aperture size. CONSTITUTION:Opening-closing control over shutter blades and that over aperture blades are both performed by driving respective motors with pulses while the direction of electric current is inverted. Then, the shutter is released after the mirror-up operation is completed in normal photographing with the mirror down, after a time a little bit longer than the longest time of the stop-down operation of aperture blades in mirror-up photographing, ater self-timer operation in self-timer photographing, and right after the release operation in mirror-up photographing during preview operation.
JP3462580A 1980-03-18 1980-03-18 Shutter release controlling circuit of single-lens reflex camera Pending JPS56130728A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3462580A JPS56130728A (en) 1980-03-18 1980-03-18 Shutter release controlling circuit of single-lens reflex camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3462580A JPS56130728A (en) 1980-03-18 1980-03-18 Shutter release controlling circuit of single-lens reflex camera

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP3656580A Division JPS56130729A (en) 1980-03-22 1980-03-22 Mirror-up photographing control circuit of single-lens reflex camera

Publications (1)

Publication Number Publication Date
JPS56130728A true JPS56130728A (en) 1981-10-13

Family

ID=12419566

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3462580A Pending JPS56130728A (en) 1980-03-18 1980-03-18 Shutter release controlling circuit of single-lens reflex camera

Country Status (1)

Country Link
JP (1) JPS56130728A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58149026A (en) * 1982-03-01 1983-09-05 Copal Co Ltd Control circuit of electromagnetically driven program shutter

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4964421A (en) * 1972-10-20 1974-06-21
JPS53144324A (en) * 1977-05-21 1978-12-15 Copal Co Ltd Camera control circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4964421A (en) * 1972-10-20 1974-06-21
JPS53144324A (en) * 1977-05-21 1978-12-15 Copal Co Ltd Camera control circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58149026A (en) * 1982-03-01 1983-09-05 Copal Co Ltd Control circuit of electromagnetically driven program shutter
JPH0514253B2 (en) * 1982-03-01 1993-02-24 Copal Co Ltd

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