JPS57172326A - Exposure control system using focusing detecting device - Google Patents

Exposure control system using focusing detecting device

Info

Publication number
JPS57172326A
JPS57172326A JP56058176A JP5817681A JPS57172326A JP S57172326 A JPS57172326 A JP S57172326A JP 56058176 A JP56058176 A JP 56058176A JP 5817681 A JP5817681 A JP 5817681A JP S57172326 A JPS57172326 A JP S57172326A
Authority
JP
Japan
Prior art keywords
exposure
mirror
film
exposure control
reflection light
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
JP56058176A
Other languages
Japanese (ja)
Inventor
Mitsuya Hosoe
Takao Kinoshita
Masayoshi Yamamichi
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 JP56058176A priority Critical patent/JPS57172326A/en
Priority claimed from US06/368,433 external-priority patent/US4429966A/en
Publication of JPS57172326A publication Critical patent/JPS57172326A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B3/00Focusing arrangements of general interest for cameras, projectors or printers
    • G03B3/10Power-operated focusing

Abstract

PURPOSE:To make always the control of a proper exposure possible, by providing additionally an optical system, to which a part of the luminous flux coming from an object is led even during the exposure of a film, for a photoelectric transducer which is the center of the focusing detection system. CONSTITUTION:A small mirror 39 is provided in a part of a supporting member 30 in a positional relation shown in figure; and in the exposure state, namely, the exposure control mode, when a quick return mirror 27 and an auxiliary mirror 29 are evacuated from the optical path at the exposure time, the reflective face of the smal mirror 39 reflects the reflection light from a film 34 to make it incident to a photodetecting unit 31. Thus, the reflection light from the film 34 is received to perform the exposure control at the exposure time.
JP56058176A 1981-04-17 1981-04-17 Exposure control system using focusing detecting device Pending JPS57172326A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56058176A JPS57172326A (en) 1981-04-17 1981-04-17 Exposure control system using focusing detecting device

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP56058176A JPS57172326A (en) 1981-04-17 1981-04-17 Exposure control system using focusing detecting device
US06/368,433 US4429966A (en) 1981-04-16 1982-04-14 Camera with photoelectric focus detecting device
DE19823214063 DE3214063C2 (en) 1981-04-16 1982-04-16

Publications (1)

Publication Number Publication Date
JPS57172326A true JPS57172326A (en) 1982-10-23

Family

ID=13076682

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56058176A Pending JPS57172326A (en) 1981-04-17 1981-04-17 Exposure control system using focusing detecting device

Country Status (1)

Country Link
JP (1) JPS57172326A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59140429A (en) * 1983-02-01 1984-08-11 Canon Inc Camera used together with flash light emitting device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59140429A (en) * 1983-02-01 1984-08-11 Canon Inc Camera used together with flash light emitting device

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