JPH0286050U - - Google Patents
Info
- Publication number
- JPH0286050U JPH0286050U JP16617788U JP16617788U JPH0286050U JP H0286050 U JPH0286050 U JP H0286050U JP 16617788 U JP16617788 U JP 16617788U JP 16617788 U JP16617788 U JP 16617788U JP H0286050 U JPH0286050 U JP H0286050U
- Authority
- JP
- Japan
- Prior art keywords
- neck
- flux density
- magnetic flux
- permanent magnet
- permanent magnets
- 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
- 230000004907 flux Effects 0.000 claims 3
- 239000000696 magnetic material Substances 0.000 claims 1
Description
第１図は本考案における一実施例の側面図、第
２図は第１図の作用説明図、第３図は第１図の後
部正面図、第４図は従来例の側面図である。
ａ，ｂ……円筒、Ｒ１〜ｍ８……永久磁石、Ｔ
……ＣＲＴ投射管。
FIG. 1 is a side view of one embodiment of the present invention, FIG. 2 is an explanatory view of the operation of FIG. 1, FIG. 3 is a rear front view of FIG. 1, and FIG. 4 is a side view of a conventional example. a, b...Cylinder, R1~m8...Permanent magnet, T
...CRT projection tube.
Claims (1)
隔を置いて一対の非磁性体から成る円筒を取り付
け、その両円筒周囲の４等分した位置に永久磁石
を配置するとともに、両円筒間の対向する永久磁
石は同一軸上とし、かつ、各永久磁石の外側磁極
面は、前記周囲で隣接するもの、および前記同一
軸上で対向するものの極性がそれぞれ異なり、さ
らに円筒上の永久磁石の磁束密度は等しく、かつ
、ＣＲＴ管頚部に取り付けた、後方の円筒の各永
久磁石の磁束密度が前方の円筒の各永久磁石の磁
束密度より大きいことを特徴とするＣＲＴ磁気電
子ビーム集束装置。 A pair of cylinders made of non-magnetic material is attached to the outer periphery of the CRT tube neck at a predetermined distance from front to back on the axis of the neck, and permanent magnets are placed at positions divided into four equal parts around both cylinders. The permanent magnets to be used are on the same axis, and the outer magnetic pole faces of each permanent magnet are different in polarity from those adjacent to each other on the periphery and those facing each other on the same axis, and furthermore, the magnetic flux density of the permanent magnets on the cylinder is different from each other. are equal, and the magnetic flux density of each permanent magnet in the rear cylinder attached to the neck of the CRT tube is larger than the magnetic flux density of each permanent magnet in the front cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16617788U JPH0286050U (en) | 1988-12-21 | 1988-12-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16617788U JPH0286050U (en) | 1988-12-21 | 1988-12-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0286050U true JPH0286050U (en) | 1990-07-06 |
Family
ID=31453331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16617788U Pending JPH0286050U (en) | 1988-12-21 | 1988-12-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0286050U (en) |
-
1988
- 1988-12-21 JP JP16617788U patent/JPH0286050U/ja active Pending