JPS51124422A - Automatic adjustable focusing device of the optical system - Google Patents
Automatic adjustable focusing device of the optical systemInfo
- Publication number
- JPS51124422A JPS51124422A JP4926875A JP4926875A JPS51124422A JP S51124422 A JPS51124422 A JP S51124422A JP 4926875 A JP4926875 A JP 4926875A JP 4926875 A JP4926875 A JP 4926875A JP S51124422 A JPS51124422 A JP S51124422A
- Authority
- JP
- Japan
- Prior art keywords
- optical system
- focusing device
- automatic adjustable
- adjustable focusing
- automatic
- 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
Abstract
PURPOSE: To enhance the discrimination accuracy of an information signal of a focus matching point by applying a pulse signal corresponding to an internal resistance of a photo-conductive element of a single frequency.
COPYRIGHT: (C)1976,JPO&Japio
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4926875A JPS51124422A (en) | 1975-04-23 | 1975-04-23 | Automatic adjustable focusing device of the optical system |
US05/591,464 US4010479A (en) | 1974-07-10 | 1975-06-30 | Focusing apparatus for optical systems |
GB28332/75A GB1514215A (en) | 1974-07-10 | 1975-07-04 | Focussing optical systems |
DE19752530874 DE2530874B2 (en) | 1974-07-10 | 1975-07-10 | METHOD AND DEVICE FOR FOCUSING AN OPTICAL SYSTEM |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4926875A JPS51124422A (en) | 1975-04-23 | 1975-04-23 | Automatic adjustable focusing device of the optical system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS51124422A true JPS51124422A (en) | 1976-10-29 |
JPS5754766B2 JPS5754766B2 (en) | 1982-11-19 |
Family
ID=12826076
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4926875A Granted JPS51124422A (en) | 1974-07-10 | 1975-04-23 | Automatic adjustable focusing device of the optical system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS51124422A (en) |
-
1975
- 1975-04-23 JP JP4926875A patent/JPS51124422A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5754766B2 (en) | 1982-11-19 |
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