JPS5648621A - Finder which permits magnified observation of central part of visual field - Google Patents
Finder which permits magnified observation of central part of visual fieldInfo
- Publication number
- JPS5648621A JPS5648621A JP12463779A JP12463779A JPS5648621A JP S5648621 A JPS5648621 A JP S5648621A JP 12463779 A JP12463779 A JP 12463779A JP 12463779 A JP12463779 A JP 12463779A JP S5648621 A JPS5648621 A JP S5648621A
- Authority
- JP
- Japan
- Prior art keywords
- finder
- visual field
- central part
- face
- reflecting face
- 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
- Viewfinders (AREA)
Abstract
PURPOSE: To easily and surely magnify the central part of the visual field of a finder by magnifying and imaging the luminous flux from the other reflecting face provided on the reflecting face for forming the finder plane of a pentagonal prism.
CONSTITUTION: Subject light through a focal plate 1 is reflected by the reflecting face 2a of a pentagonal prsim 2 to image on the finder plane, and is observed through an eyepiece 3. On the other hand, part of this subject luminous flux reflects on the reflecting face 4a of the optical axis differing from that of the face 2a of a wedgelike optical element 4 provided to the face 2a and said luminous flux is magnified by a magnifying optical lens 5. With this constitution, the central part of the visual field of the finder is easily and surely magnified and the focusing may be easily and surely performed by observing this magnified image.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12463779A JPS5648621A (en) | 1979-09-27 | 1979-09-27 | Finder which permits magnified observation of central part of visual field |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12463779A JPS5648621A (en) | 1979-09-27 | 1979-09-27 | Finder which permits magnified observation of central part of visual field |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5648621A true JPS5648621A (en) | 1981-05-01 |
Family
ID=14890334
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12463779A Pending JPS5648621A (en) | 1979-09-27 | 1979-09-27 | Finder which permits magnified observation of central part of visual field |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5648621A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5229957U (en) * | 1975-07-21 | 1977-03-02 | ||
JPS5235630A (en) * | 1975-09-12 | 1977-03-18 | Minolta Camera Co Ltd | Enlarging optical system for finder |
-
1979
- 1979-09-27 JP JP12463779A patent/JPS5648621A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5229957U (en) * | 1975-07-21 | 1977-03-02 | ||
JPS5235630A (en) * | 1975-09-12 | 1977-03-18 | Minolta Camera Co Ltd | Enlarging optical system for finder |
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