JPS5285414A - Image pickup tube - Google Patents
Image pickup tubeInfo
- Publication number
- JPS5285414A JPS5285414A JP190276A JP190276A JPS5285414A JP S5285414 A JPS5285414 A JP S5285414A JP 190276 A JP190276 A JP 190276A JP 190276 A JP190276 A JP 190276A JP S5285414 A JPS5285414 A JP S5285414A
- Authority
- JP
- Japan
- Prior art keywords
- lens
- thermion
- focused
- refocusing
- image pickup
- 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 decrease influence of refocusing deterioration caused by astigmation of a main focusing lens and to improve image formation magnification on a targer by combining a refocusing lens with main focusing lens when a thermion radiated from cathode by adding a prefocusing lens to a Pierce type electron gun is focused to a high density electron beam efficiently by a fine aperture and the focused thermion is refocused on a target.
COPYRIGHT: (C)1977,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP190276A JPS5285414A (en) | 1976-01-09 | 1976-01-09 | Image pickup tube |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP190276A JPS5285414A (en) | 1976-01-09 | 1976-01-09 | Image pickup tube |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5285414A true JPS5285414A (en) | 1977-07-15 |
JPS5728178B2 JPS5728178B2 (en) | 1982-06-15 |
Family
ID=11514497
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP190276A Granted JPS5285414A (en) | 1976-01-09 | 1976-01-09 | Image pickup tube |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5285414A (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4874973A (en) * | 1971-12-30 | 1973-10-09 | ||
JPS5014320U (en) * | 1973-06-07 | 1975-02-14 | ||
JPS50146264A (en) * | 1974-05-13 | 1975-11-22 | ||
JPS50158274A (en) * | 1974-05-20 | 1975-12-22 |
-
1976
- 1976-01-09 JP JP190276A patent/JPS5285414A/en active Granted
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4874973A (en) * | 1971-12-30 | 1973-10-09 | ||
JPS5014320U (en) * | 1973-06-07 | 1975-02-14 | ||
JPS50146264A (en) * | 1974-05-13 | 1975-11-22 | ||
JPS50158274A (en) * | 1974-05-20 | 1975-12-22 |
Also Published As
Publication number | Publication date |
---|---|
JPS5728178B2 (en) | 1982-06-15 |
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