JPH0433248U - - Google Patents
Info
- Publication number
- JPH0433248U JPH0433248U JP7493190U JP7493190U JPH0433248U JP H0433248 U JPH0433248 U JP H0433248U JP 7493190 U JP7493190 U JP 7493190U JP 7493190 U JP7493190 U JP 7493190U JP H0433248 U JPH0433248 U JP H0433248U
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnet
- focus
- yoke
- ray tube
- cathode ray
- 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.)
- Pending
Links
- 230000003068 static effect Effects 0.000 claims description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims 1
- 238000010894 electron beam technology Methods 0.000 claims 1
Description
第１図はこの考案の一実施例であるフオーカス
マグネツトの縦断面図、第２図は第１図のフオー
カスマグネツトを正面からみた図、第３図はテレ
ビジヨン受像機などのブラウン管において電子ビ
ームの収束するためのフオーカスマグネツトを装
着したブラウン管の断面図、第４図は従来のフオ
ーカスマグネツトの縦断面図、第５図は第４図の
フオーカスマグネツトを正面からみた図である。
１……永久磁石、２……ヨーク、３……絶縁層
、４……スタテイツクコイル、５……ダイナミツ
クコイル、６ｂ……フオーカスマグネツト、９…
…カソード電極、１０……蛍光面、１１……切溝
。なお、図中、同一符号は同一又は相当部分を示
す。
Fig. 1 is a vertical cross-sectional view of a focus magnet that is an embodiment of this invention, Fig. 2 is a front view of the focus magnet shown in Fig. 1, and Fig. 3 is an electronic A sectional view of a cathode ray tube equipped with a focus magnet for beam convergence, FIG. 4 is a vertical sectional view of a conventional focus magnet, and FIG. 5 is a front view of the focus magnet of FIG. DESCRIPTION OF SYMBOLS 1... Permanent magnet, 2... Yoke, 3... Insulating layer, 4... Static coil, 5... Dynamic coil, 6b... Focus magnet, 9...
... Cathode electrode, 10 ... Fluorescent screen, 11 ... Cut groove. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.
Claims (1)
れたヨークと、上記永久磁石の内側に配装された
スタテイツクコイルと、上記永久磁石の内側で、
かつ上記スタテイツクコイルの外側に取り付けら
れたダイナミツクコイルとを備え、ブラウン管の
ネツク部に装着されて上記ブラウン管のカソード
電極からブラウン管の蛍光面に放出される電子ビ
ームを収束するためのフオーカスマグネツトにお
いて、上記ヨークの半径方向に切溝を形成すると
ともに、上記永久磁石とヨークとのあいだに絶縁
層を介在せしめたことを特徴とするフオーカスマ
グネツト。 a permanent magnet, a yoke attached to both sides of the permanent magnet, a static coil arranged inside the permanent magnet, and inside the permanent magnet,
and a dynamic coil attached to the outside of the static coil, and a focus magnet attached to the neck of the cathode ray tube to focus the electron beam emitted from the cathode electrode of the cathode ray tube onto the phosphor screen of the cathode ray tube. A focus magnet characterized in that a groove is formed in the radial direction of the yoke, and an insulating layer is interposed between the permanent magnet and the yoke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7493190U JPH0433248U (en) | 1990-07-12 | 1990-07-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7493190U JPH0433248U (en) | 1990-07-12 | 1990-07-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0433248U true JPH0433248U (en) | 1992-03-18 |
Family
ID=31615061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7493190U Pending JPH0433248U (en) | 1990-07-12 | 1990-07-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0433248U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0249052B2 (en) * | 1980-12-17 | 1990-10-29 | Nippon Telegraph & Telephone |
-
1990
- 1990-07-12 JP JP7493190U patent/JPH0433248U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0249052B2 (en) * | 1980-12-17 | 1990-10-29 | Nippon Telegraph & Telephone |
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