JPS55109081A - Television camera - Google Patents
Television cameraInfo
- Publication number
- JPS55109081A JPS55109081A JP1618579A JP1618579A JPS55109081A JP S55109081 A JPS55109081 A JP S55109081A JP 1618579 A JP1618579 A JP 1618579A JP 1618579 A JP1618579 A JP 1618579A JP S55109081 A JPS55109081 A JP S55109081A
- Authority
- JP
- Japan
- Prior art keywords
- distortion
- lens
- amount
- zoom lens
- deflection
- 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
- Lenses (AREA)
- Details Of Television Scanning (AREA)
Abstract
PURPOSE:To secure the automatic correction for the distortion of the picture image produced through the zoom lens and thus obtain the video output free from the picture distortion at all times, by detecting the variation amount of the focal length of the zoom lens and then varying the correction amount of the deflection system based on the above variation amount. CONSTITUTION:The focal length of zoom lens 1 is varied by turning the potentiometer 2. While the output voltage of potentiometer 2 is supplied to function generator 3 which is controlled so as to secure the coincidence with the distortion property of lens 1 which is measured preveiously. The signal featuring the amount proportional to the distortion of lens 1 and delivered from generator 3 is supplied to deflecting circuit 4 to be used as the control voltage for the linearity and the deflection size. Then the corrected deflecting current is flowed to deflection coil 5, and the picture image having some distortion is formed on the photoelectric conversion screen of pickup tube 6 via the lens system. Thus the video output can be obtained with the reduced amount of distortion.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1618579A JPS55109081A (en) | 1979-02-16 | 1979-02-16 | Television camera |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1618579A JPS55109081A (en) | 1979-02-16 | 1979-02-16 | Television camera |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55109081A true JPS55109081A (en) | 1980-08-21 |
JPS6125273B2 JPS6125273B2 (en) | 1986-06-14 |
Family
ID=11909449
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1618579A Granted JPS55109081A (en) | 1979-02-16 | 1979-02-16 | Television camera |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55109081A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4506300A (en) * | 1982-09-29 | 1985-03-19 | Eastman Kodak Company | Film video player with zoom, scan, and automatic border control |
US4827333A (en) * | 1983-10-11 | 1989-05-02 | Hitachi Denshi Kabushiki Kaisha | Dynamic image correction method of offsets of various image pickup characteristics of a television camera system caused by variations in various image pickup conditions |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102626983B1 (en) | 2017-09-06 | 2024-01-18 | 덴카 주식회사 | thermal conductive sheet |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4987237A (en) * | 1972-08-25 | 1974-08-21 |
-
1979
- 1979-02-16 JP JP1618579A patent/JPS55109081A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4987237A (en) * | 1972-08-25 | 1974-08-21 | ||
GB1375645A (en) * | 1972-08-25 | 1974-11-27 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4506300A (en) * | 1982-09-29 | 1985-03-19 | Eastman Kodak Company | Film video player with zoom, scan, and automatic border control |
US4827333A (en) * | 1983-10-11 | 1989-05-02 | Hitachi Denshi Kabushiki Kaisha | Dynamic image correction method of offsets of various image pickup characteristics of a television camera system caused by variations in various image pickup conditions |
Also Published As
Publication number | Publication date |
---|---|
JPS6125273B2 (en) | 1986-06-14 |
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