JPS57154227A - Driving device for photometric mirror of single lens reflex camera - Google Patents

Driving device for photometric mirror of single lens reflex camera

Info

Publication number
JPS57154227A
JPS57154227A JP56039085A JP3908581A JPS57154227A JP S57154227 A JPS57154227 A JP S57154227A JP 56039085 A JP56039085 A JP 56039085A JP 3908581 A JP3908581 A JP 3908581A JP S57154227 A JPS57154227 A JP S57154227A
Authority
JP
Japan
Prior art keywords
mirror
bimorph
photometry
sub
electric power
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
JP56039085A
Other languages
Japanese (ja)
Inventor
Kiyoshi Iizuka
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 JP56039085A priority Critical patent/JPS57154227A/en
Publication of JPS57154227A publication Critical patent/JPS57154227A/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
    • G03B19/00—Cameras
    • G03B19/02—Still-picture cameras
    • G03B19/12—Reflex cameras with single objective and a movable reflector or a partly-transmitting mirror

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Control For Cameras (AREA)
  • Cameras In General (AREA)

Abstract

PURPOSE:To provide a titled device of a low cost by providing a member of bimorph construction including a piezoelectric element to a sub-mirror which turns according to the turning of a main movable mirror. CONSTITUTION:Under photometry or during closing of a shutter, no voltage is applied from an electric power source 14 to the bimorph plate of a sub-mirror 11, and the light reflected by the specular surface of the mirror 11 is made indicent to a photodetector 12, by which photometry is accomplished. While a film 15 is under exposure through the opened shutter where a main mirror 10 is up, a switch 13 closes and the voltage from an electric power source 14 is applied to the bimorph plate of the mirror 11, by which the mirror 11 is deformed to avert to the outside of the photographing luminous flux, thereby shielding the semitransparent mirror part of the mirror 10. It is possible to make the specular surface worked on the bimorph mirror uniform or to divide the same to plural areas according to need.
JP56039085A 1981-03-17 1981-03-17 Driving device for photometric mirror of single lens reflex camera Pending JPS57154227A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56039085A JPS57154227A (en) 1981-03-17 1981-03-17 Driving device for photometric mirror of single lens reflex camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56039085A JPS57154227A (en) 1981-03-17 1981-03-17 Driving device for photometric mirror of single lens reflex camera

Publications (1)

Publication Number Publication Date
JPS57154227A true JPS57154227A (en) 1982-09-24

Family

ID=12543242

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56039085A Pending JPS57154227A (en) 1981-03-17 1981-03-17 Driving device for photometric mirror of single lens reflex camera

Country Status (1)

Country Link
JP (1) JPS57154227A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59189636U (en) * 1983-06-03 1984-12-15 日本電産コパル株式会社 Quick return mirror lifting mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59189636U (en) * 1983-06-03 1984-12-15 日本電産コパル株式会社 Quick return mirror lifting mechanism

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