JPS5553858A - Rear step acceleration type cathode ray tube - Google Patents
Rear step acceleration type cathode ray tubeInfo
- Publication number
- JPS5553858A JPS5553858A JP12795278A JP12795278A JPS5553858A JP S5553858 A JPS5553858 A JP S5553858A JP 12795278 A JP12795278 A JP 12795278A JP 12795278 A JP12795278 A JP 12795278A JP S5553858 A JPS5553858 A JP S5553858A
- Authority
- JP
- Japan
- Prior art keywords
- slit
- lens
- electrode
- electron beam
- ray tube
- 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 reduce vertical blur and to improve the deflection sensitivity, by arranging flat fan shape box type electron lens while providing a slit in the target side of lens for passing electron beam.
CONSTITUTION: Fan shape box type electron lens 9 is assembled with first and second electrodes 12, 13 and constructed of metal. First electrode 12 has 1stW4th faces 15W18 and formed tubular to pas the electron beam. Second electrode 13 has tubular section constituted of 1stW4th faces 19W22 and substantially closable 5th face 24 having slit 23 of such width as pass the electron beam, and located in adjascent with first electrode 12. When making a slit 23 in the target side of lens 9, convex lens effect in the proximity of said slit 23 can be utilized to collect vertically blurred beam onto the target 11 resulting in an indication having reduced vertical blur.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12795278A JPS5935499B2 (en) | 1978-10-18 | 1978-10-18 | cathode ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12795278A JPS5935499B2 (en) | 1978-10-18 | 1978-10-18 | cathode ray tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5553858A true JPS5553858A (en) | 1980-04-19 |
| JPS5935499B2 JPS5935499B2 (en) | 1984-08-29 |
Family
ID=14972691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12795278A Expired JPS5935499B2 (en) | 1978-10-18 | 1978-10-18 | cathode ray tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5935499B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03132600A (en) * | 1989-10-19 | 1991-06-05 | Tekken Constr Co Ltd | Segment for lining tunnel |
-
1978
- 1978-10-18 JP JP12795278A patent/JPS5935499B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5935499B2 (en) | 1984-08-29 |
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