JPS57172326A - Exposure control system using focusing detecting device - Google Patents
Exposure control system using focusing detecting deviceInfo
- 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
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
- G03B3/00—Focusing arrangements of general interest for cameras, projectors or printers
- G03B3/10—Power-operated focusing
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Indication In Cameras, And Counting Of Exposures (AREA)
- Automatic Focus Adjustment (AREA)
- Exposure Control For Cameras (AREA)
- Focusing (AREA)
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.
Priority Applications (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 DE3214063A1 (en) | 1981-04-16 | 1982-04-16 | CAMERA WITH A PHOTOELECTRIC FOCUS DETECTOR |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56058176A JPS57172326A (en) | 1981-04-17 | 1981-04-17 | Exposure control system using focusing detecting device |
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) | 1981-04-16 | 1981-04-17 | Exposure control system using focusing detecting device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57172326A (en) |
Cited By (1)
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 |
-
1981
- 1981-04-17 JP JP56058176A patent/JPS57172326A/en active Pending
Cited By (1)
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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