CN2609175Y - Composite focusing lens electronic gun - Google Patents
Composite focusing lens electronic gun Download PDFInfo
- Publication number
- CN2609175Y CN2609175Y CN 03218610 CN03218610U CN2609175Y CN 2609175 Y CN2609175 Y CN 2609175Y CN 03218610 CN03218610 CN 03218610 CN 03218610 U CN03218610 U CN 03218610U CN 2609175 Y CN2609175 Y CN 2609175Y
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- CN
- China
- Prior art keywords
- electrode
- lens
- electron gun
- voltage
- focusing
- 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.)
- Expired - Lifetime
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- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
Abstract
The utility model relates to a compound focusing lens electron gun for the color kinescope, comprising a supports and glass bar, electrode G1 and G2 and a focusing lens; wherein, the electrode G1 has a cathode in the front, and the cathode is provided with a hot wire inside; the back of the electrode G1 is provided with electrode G2-G6; and a prefocus lens is formed between the G2 and the G5; and the G3, G4 and G5 make the attachment lens; and the G5 and the G 6 make the main lens; the anode voltage is transferred to the electrode G6, while the focusing voltage is respectively delivered to the electrode G2 , G4 and electrode G 3, G5. When the anode voltage is 9.0 KV-15.0KV, the focusing voltage is 25-30 percent of the anode voltage; therefore, the electron-beam spot is improved, and a better beam spot and smaller electron bean diameter are realized to meet the need of the small screen of CRT TV set. The utility model is high in definition, vivid in color, great in contrast ratio and wide in application; and the utility model is the ideal compound focusing lens electron gun for CRT TV set.
Description
One, technical field
The utility model relates to color picture tube and color display tube electron gun, particularly is applicable to the electron gun that the small screen is used.
Two, background technology
The electron gun of existing narrow neck, because of its intrinsic structure, can only be used for anode working voltage is 25kV, focus voltage is 26%～34% 37cm-54cmCRT of anode voltage, can not use on the RT of the small screen.
Three, summary of the invention
The purpose of this utility model provides a kind of narrow neck the small screen combined type condenser lens electron gun that is applicable to.
The technical scheme that realizes the object of the invention is to solve like this: this combined type condenser lens electron gun, comprise glass frosted pillar, and the G6 electrode, G5 electrode, G4 electrode, G3 electrode, G2 electrode, G1 electrode, anode assemblies and the filament assembly that fixedly install by glass frosted pillar; It is characterized in that G2 electrode and G3 electrode constitute prefocus lens, G3, G4, G5 electrode constitute the unipotential attachment lens, G5 and G6 electrode constitute the bipotential main lens, being adapted to anode working voltage is 9.0KV～15.0KV, and focus voltage is 26%～30% a narrow neck the small screen electron gun of anode voltage.
The utility model compared with prior art, because to the focusing system in the electron gun, length, the electrode spacing of focusing electrode have been done improvement, the focus voltage scope is controlled in the suitable scope, obtained good electron Shu Guangdian, satisfied the instructions for use of the color picture tube and the colour display tube of the small screen, be specially adapted to the narrow neck the small screen CRT of screen size at 15cm～25cm.Have rational in infrastructure, good focusing performance and practicality, good contrast, the characteristics that accommodation is wide are present reasonable CRT electron guns, and better economic and social benefit are arranged.
Four, description of drawings
Fig. 1 is the utility model structural principle schematic diagram.
Five, embodiment
Accompanying drawing is a specific embodiment of the utility model.
Below in conjunction with accompanying drawing content of the present utility model is described further.
Referring to shown in Figure 1, combined type condenser lens electron gun, comprise glass frosted pillar 1, and, be provided with heated filament 9 in the cathode assembly cylinder by G6 electrode 2, G5 electrode 3, G4 electrode 4, G3 electrode 5, G2 electrode 6, G1 electrode 7, cathode assembly 8 and filament assembly 9 that glass frosted pillar 1 fixedly installs; Wherein G2 electrode 6 constitutes prefocus lens with G3 electrode 5, and G3, G4, G5 electrode constitute the unipotential attachment lens, and G5 and G6 electrode constitute the bipotential main lens, synthesize combined type condenser lens electron gun by attachment lens and main lens.For the G5 electrode structure that can obtain adapting to and the interval of length and G2-G3 electrode, calculate by the electron beam analogue simulation, obtain the scope of G5 focusing electrode length and focus voltage and screen and go up relation between the electron beam spot diameter.
The length of above-mentioned said G5 focusing electrode is the 16.20mm---19.12mm scope, the spacing distance of G2 electrode and G3 electrode is in the 0.5mm-0.68mm scope, the anode worker 9.0KV～15.0KV of described electron gun, focus voltage is 25%～30% or 30 ± 3% of an anode voltage, and the negative electrode of electron gun adopts the low-power heated filament to start the formula negative electrode fast.The utility model has adopted compound quadrupole focussing lesn and focus electrode structure.Also used the soft arcing technology of the ring of drawing up on the glass rod, the spark of having avoided high-tension electricity to produce can be died away.
Claims (3)
1. combined type condenser lens electron gun, comprise glass frosted pillar [1], and the G6 electrode [2], G5 electrode [3], G4 electrode [4], G3 electrode [5], G2 electrode [6], G1 electrode [7], anode assemblies [8] and the filament assembly [9] that fixedly install by glass frosted pillar [1]; It is characterized in that, G2 electrode [6] constitutes prefocus lens with G3 electrode [5], and G3, G4, G5 electrode constitute the unipotential attachment lens, and G5 and G6 electrode constitute the bipotential main lens, being adapted to anode working voltage is 9.0KV～15.0KV, and focus voltage is 26%～30% of an anode voltage.
2. combined type condenser lens electron gun according to claim 1, the length that it is characterized in that the G5 focusing electrode is 16.20mm-19.12mm, G2 electrode and G3 spacing distance between electrodes are in the 0.5mm-0.68mm scope.
3. combined type condenser lens electron gun according to claim 1 is characterized in that described electron gun adopts low-power heated filament and quick startup formula negative electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03218610 CN2609175Y (en) | 2003-03-14 | 2003-03-14 | Composite focusing lens electronic gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03218610 CN2609175Y (en) | 2003-03-14 | 2003-03-14 | Composite focusing lens electronic gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2609175Y true CN2609175Y (en) | 2004-03-31 |
Family
ID=34161015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03218610 Expired - Lifetime CN2609175Y (en) | 2003-03-14 | 2003-03-14 | Composite focusing lens electronic gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2609175Y (en) |
-
2003
- 2003-03-14 CN CN 03218610 patent/CN2609175Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: IRICO GROUP ELECTRONICS CO., LTD. Free format text: FORMER OWNER: CAIHONG COLOUR KINESCOPE GENERAL FACTORY Effective date: 20041126 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20041126 Address after: 712021 No. 1 Rainbow Road, Shaanxi, Xianyang Patentee after: IRICO Group Electronics Co., Ltd. Address before: 712021 No. 1 Rainbow Road, Shaanxi, Xianyang Patentee before: Caihong Color CRT General Factory |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130314 Granted publication date: 20040331 |