JPS5526539A - Camera - Google Patents
CameraInfo
- Publication number
- JPS5526539A JPS5526539A JP9936878A JP9936878A JPS5526539A JP S5526539 A JPS5526539 A JP S5526539A JP 9936878 A JP9936878 A JP 9936878A JP 9936878 A JP9936878 A JP 9936878A JP S5526539 A JPS5526539 A JP S5526539A
- Authority
- JP
- Japan
- Prior art keywords
- focus
- detectors
- photographic lens
- state
- decrease
- 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
Landscapes
- Automatic Focus Adjustment (AREA)
- Focusing (AREA)
Abstract
PURPOSE: To enable the photographic lens to be adjusted to an approximate focus position even if the operations of focus detectors are inadequate by providing an auxiliary device which functions separately from the focus detector and operating this manually or automatically.
CONSTITUTION: A potentiometer 8 is provided on the outside cicrcumference of the lens-barrel 2 of a photographic lens L and its shaft 8c is turned by a pinion 12 through focussing. The distance detecting system is constituted by the focus detectors CC1, CC2 consisting of cylindrical lenses 14, 18. In the case of the state where the focus detection is not sufficiently guaranteed owing to the decrease in the luminance intensity of the subject, the decrease in supply voltage, etc., it is detected by the comparator CP3 and resistance R10 being state detectors and an auxiliary device CC4 being a pan focus detecting circuit is put in an operating state, based on the output whereof the photographic lens may be adjusted to an approximate focus position manufally or automatically.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9936878A JPS5526539A (en) | 1978-08-15 | 1978-08-15 | Camera |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9936878A JPS5526539A (en) | 1978-08-15 | 1978-08-15 | Camera |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5526539A true JPS5526539A (en) | 1980-02-26 |
Family
ID=14245599
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9936878A Pending JPS5526539A (en) | 1978-08-15 | 1978-08-15 | Camera |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5526539A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58178329A (en) * | 1982-04-14 | 1983-10-19 | Copal Co Ltd | Focus detector suited for self-timer photographing |
JP2006215181A (en) * | 2005-02-02 | 2006-08-17 | Canon Inc | Imaging apparatus |
US7167203B1 (en) | 1998-07-30 | 2007-01-23 | Minolta, Co., Ltd. | Digital camera having controller for reducing occurrences of blur in displayed images |
-
1978
- 1978-08-15 JP JP9936878A patent/JPS5526539A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58178329A (en) * | 1982-04-14 | 1983-10-19 | Copal Co Ltd | Focus detector suited for self-timer photographing |
JPH0473130B2 (en) * | 1982-04-14 | 1992-11-20 | Copal Co Ltd | |
US7167203B1 (en) | 1998-07-30 | 2007-01-23 | Minolta, Co., Ltd. | Digital camera having controller for reducing occurrences of blur in displayed images |
JP2006215181A (en) * | 2005-02-02 | 2006-08-17 | Canon Inc | Imaging apparatus |
JP4641424B2 (en) * | 2005-02-02 | 2011-03-02 | キヤノン株式会社 | Imaging device |
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