JPS564129A - Focal plate - Google Patents
Focal plateInfo
- Publication number
- JPS564129A JPS564129A JP7894479A JP7894479A JPS564129A JP S564129 A JPS564129 A JP S564129A JP 7894479 A JP7894479 A JP 7894479A JP 7894479 A JP7894479 A JP 7894479A JP S564129 A JPS564129 A JP S564129A
- Authority
- JP
- Japan
- Prior art keywords
- portions
- divided
- divided portions
- focal plate
- slopes
- 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.)
- Granted
Links
Landscapes
- Viewfinders (AREA)
Abstract
PURPOSE: To make possible the focusing of the bar-form object extending vertically or laterally by dividing the vertically divided portions which are divided horizontally at the center of the focal plate to respectively three or more portions by perpendicular lines and forming split prisms in the repsective divided portions.
CONSTITUTION: The central portion 2 of a focal plate 1 is divided by a horizontal line 3 and perpendicular lines 4, 5 and split prisms D, E...H, I are formed in the respective divided portions. The directions where the slopes of the respective split prisms protrude are made on the left side in the upper part and on the right side in the lower part and since the directions where the slopes protrude are so formed as to bend between the adjoining portions in the respective top and bottom divided portions, these have the effect of periodically changing even the bar-form object extending vertically or laterally into waveform and make focusing easy.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7894479A JPS564129A (en) | 1979-06-22 | 1979-06-22 | Focal plate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7894479A JPS564129A (en) | 1979-06-22 | 1979-06-22 | Focal plate |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS564129A true JPS564129A (en) | 1981-01-17 |
JPS6140090B2 JPS6140090B2 (en) | 1986-09-08 |
Family
ID=13675988
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7894479A Granted JPS564129A (en) | 1979-06-22 | 1979-06-22 | Focal plate |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS564129A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3339786A1 (en) * | 1982-05-04 | 1985-05-23 | Günther Dipl.-Finanzwirt 8520 Erlangen Alka | Adjusting disc with universal split-image indicator |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0157893U (en) * | 1987-10-05 | 1989-04-11 |
-
1979
- 1979-06-22 JP JP7894479A patent/JPS564129A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3339786A1 (en) * | 1982-05-04 | 1985-05-23 | Günther Dipl.-Finanzwirt 8520 Erlangen Alka | Adjusting disc with universal split-image indicator |
Also Published As
Publication number | Publication date |
---|---|
JPS6140090B2 (en) | 1986-09-08 |
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