JPS5687023A - Automatic focus detector - Google Patents
Automatic focus detectorInfo
- Publication number
- JPS5687023A JPS5687023A JP16453679A JP16453679A JPS5687023A JP S5687023 A JPS5687023 A JP S5687023A JP 16453679 A JP16453679 A JP 16453679A JP 16453679 A JP16453679 A JP 16453679A JP S5687023 A JPS5687023 A JP S5687023A
- Authority
- JP
- Japan
- Prior art keywords
- subject
- low
- luminance
- focusing
- detector
- 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
- Focusing (AREA)
- Automatic Focus Adjustment (AREA)
Abstract
PURPOSE: To enable focusing to be detected surely even when the luminance of a subject is low and even at the time of low contrast by irradiating light from a light emitting element to the subject so that part of the subject corresponding to the image of the subject formed on a photodetector is irradiated.
CONSTITUTION: A light emitting element 36 is provided on the camera bottom plate near the place where a detector 28 for focusing is provided, and the light 46 from the element 36 is slenderly patterned by a slip 40 and is irrdiated onto a subject via a focusdetecting mirror 26, a movable mirror 14 and a photographic lens 10. Since this irradiation position is so as set to intersect with the focus detecting part of the subject projected to the detector 28, it turns out that the luminance increases in this part only, thus even when the luminance of the subject is low and even when the contrast of the subject is low, the focusing detection may be accomplished surely.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16453679A JPS5687023A (en) | 1979-12-18 | 1979-12-18 | Automatic focus detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16453679A JPS5687023A (en) | 1979-12-18 | 1979-12-18 | Automatic focus detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5687023A true JPS5687023A (en) | 1981-07-15 |
Family
ID=15795014
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16453679A Pending JPS5687023A (en) | 1979-12-18 | 1979-12-18 | Automatic focus detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5687023A (en) |
-
1979
- 1979-12-18 JP JP16453679A patent/JPS5687023A/en active Pending
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