KR950009823Y1 - Magnetic compensation ring for crt - Google Patents
Magnetic compensation ring for crt Download PDFInfo
- Publication number
- KR950009823Y1 KR950009823Y1 KR2019900011073U KR900011073U KR950009823Y1 KR 950009823 Y1 KR950009823 Y1 KR 950009823Y1 KR 2019900011073 U KR2019900011073 U KR 2019900011073U KR 900011073 U KR900011073 U KR 900011073U KR 950009823 Y1 KR950009823 Y1 KR 950009823Y1
- Authority
- KR
- South Korea
- Prior art keywords
- magnetic field
- focus
- magnet
- ring body
- ring
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/70—Arrangements for deflecting ray or beam
- H01J29/701—Systems for correcting deviation or convergence of a plurality of beams by means of magnetic fields at least
- H01J29/702—Convergence correction arrangements therefor
Landscapes
- Video Image Reproduction Devices For Color Tv Systems (AREA)
Abstract
내용 없음.No content.
Description
제 1 도는 본 고안의 자계보정링을 나타내는 사시도1 is a perspective view showing a magnetic field correction ring of the present invention
제 2 도는 본 고안의 사용예시도2 is a diagram showing the use of the present invention
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 링체 2 : 노브1 ring body 2 knob
3 : 자석편3: magnet piece
본 고안은 투사관용 자계보정링에 관한 것이다.The present invention relates to a field correction ring for the projection tube.
투사관은 음극선관방식에 의한 칼라 프로젝션텔레비젼에서 단색 화상을 현출하기 위하여 사용되는 모노음극선관의 하나로 사용된다.The projection tube is used as one of the mono-cathode tubes used for displaying a monochrome image in color projection television by the cathode ray tube method.
칼라 프로젝션텔레비젼은 3관 혹은 6관의 모노음극선관에서 투사되는 단색화상을 투사스크린 상에서 합성하여 대형의 칼라화상을 얻게 한 시스팀이며, 이 방식에 있어서의 문제점은 화상의 확대에 의한 휘도저하와 영상합성에 의한 포커스불량이 거론되고 있다.Color projection television is a system that obtains a large color image by synthesizing a monochrome image projected from a 3 or 6 mono cathode ray tube on a projection screen. Poor focus due to synthesis has been discussed.
전자의 휘도저하는 고휘도투사관의 개발에 의해 상당수준 향상되고 있오나, 포커스 불량의 개선은 아직도 뚜렷한 진척이 없는 실정이다.The decrease in the luminance of the former has been greatly improved by the development of the high-intensity projection tube, but the improvement of the focus defect is still not clear.
칼라 프로젝션텔레비젼에서 포커스불량의 발생원인은 다음과 같다.The causes of poor focus in color projection television are as follows.
투사관의 네크 주위에는 통상의 음극선관과 마찬가지로 편향요크가 부착되고, 이 편향요크의 후측에 포커스마그네트와 비임얼라인먼트가 차례로 설치되는데, 전기한 포커스마그네트는 중심에 코일을 보유하고, 그 외주에영구자석이 부착된 구조로 되어 있다.The deflection yoke is attached around the neck of the projection tube like a normal cathode ray tube, and the focus magnet and the vial alignment are installed in the rear side of the deflection yoke, and the focus magnet has a coil in the center and is permanently The magnet is attached.
이러한 구조는 고정세(高精細)를 얻기 위하여 필수적으로 갖추어야 하는 것이지만, 포커스마그테트가 갖고있는 고유자계 불균일성과, 이 마그네트의 자계에 대한 코일의 배치에 따른 자계산포 등에 의해 포커스불량을일으키게 된다.This structure is necessary to obtain a high resolution, but it causes focus failure due to the inherent magnetic field nonuniformity of the focus magnet and the magnetic field dispersion due to the arrangement of the coil with respect to the magnetic field of the magnet.
본 고안의 목적은 상기한 투사관의 포커스 불량을 개선하기 위하여 투사관의 포커스마그네트에서 자계산포가발생할 경우, 이를 보정할 수 있는 투사관용 자계보청링을 제공함에 있다.An object of the present invention is to provide a magnetic field hearing ring for a projection tube that can correct the magnetic field dispersion occurs in the focus magnet of the projection tube to improve the focus failure of the projection tube.
상기 목적에 따라, 본 고안은 비자성체의 링체와, 이 링체의 양단으로 연장 형성된 노브 및 전기한 링체의 외주에서 대칭방향으로 부착된 자석편으로 이루어짐을 특징으로 한다.According to the above object, the present invention is characterized by consisting of a ring body of a nonmagnetic material, a knob extending to both ends of the ring body, and a magnet piece attached in a symmetrical direction at the outer circumference of the ring body.
이하, 본 고안의 바람직한 실시예를 첨부도면에 따라 상세히 설명한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
제1도는 본 고안의 구성을 나타내는 외관 사시도로서, 알루미늄이나 동합금과 같은 비자성체로 된 링체(1)은그 양단에 1쌍의 노브(2)를 연장 형성하고 있으며, 또한 전기한 링체(1)의 주위에는 대칭방향으로 최소한 하나이상의 1mm2이상의, 또는 1쌍의 자석편(3)이 부착되어 있다.1 is an external perspective view showing the structure of the present invention, in which a ring body 1 made of a nonmagnetic material such as aluminum or a copper alloy extends and forms a pair of knobs 2 at both ends thereof. At least one or more 1 mm 2 or more pairs of magnet pieces 3 are attached to the periphery in the symmetrical direction.
이와 같이 구성된 본 고안은 제2도에 도시한 바와 같이, 투사관(4)의 네크 주위에 삽입 개재되어 자계보정을 행하게 된다.The present invention configured as described above, as shown in FIG. 2, interpolates around the neck of the projection tube 4 to perform magnetic field correction.
투사관(4)의 네크 주위는 편향요크(5)가 장착되고, 그 뒤로 적어도 2개의 포커스마그네트(6)이, 홀더(7)에 의해 적당한 위치로 배치된다.A deflection yoke 5 is mounted around the neck of the projection tube 4, and at least two focus magnets 6 are arranged at appropriate positions by the holder 7.
이러한 투사관의 네크측 포커스 마그네트 배치에 있어서, 본 고안의 자계보정링은 홀더(7)에서포커스마그네트(6)의 배치열외측방이 되는 위치에 링체(1)을 삽입하여 개재된다.In the arrangement of the neck-side focus magnet of such a projection tube, the magnetic field correction ring of the present invention is interposed by inserting the ring body 1 at a position where the holder 7 becomes outside the arrangement column of the focus magnet 6.
따라서, 이 실시예에서는 자계보정링이 2개소에 배치되어 포커스마그네트(6)에서 발생되는 자계가 외부로 누설되지 않게 하고 있다.Therefore, in this embodiment, the magnetic field correction rings are arranged in two places so that the magnetic field generated by the focus magnet 6 does not leak to the outside.
본 고안에 의한 자계보정은 노브(2)를 쥐고 네크 주위에서 링체(1)을 선회시키면서 투사스크린상에 현출되는 합성화상의 포커스를 일치시켜 나가는 과정을 통하여 행해진다.The magnetic field correction according to the present invention is performed by matching the focus of the synthesized image displayed on the projection screen while turning the ring body 1 around the neck by holding the knob 2.
이와 같이 링체(1)이 작업자의 조작에 의해 회전하게 될 때, 포커스마그네트(6)에 대한 자석편(3)의 위치가 이동되어 전기한 포커스마그네트(6)의 주위에 형성되는 자계분포를 변화시켜 주게되며, 이 때의 자계분포변화가 투사스크린 상의 포커스 일치로 나타나는 지점이 자계보정점으로 되는 것이다In this way, when the ring body 1 is rotated by the operator's operation, the position of the magnet piece 3 relative to the focus magnet 6 is shifted to change the magnetic field distribution formed around the focus magnet 6 described above. In this case, the point where the change of the magnetic field distribution appears as the focus match on the projection screen becomes the magnetic field correction point.
이상과 같이 본 고안은 포커스마그네트의 자계산포로 나타나는 포커스불량을, 자계보정링에 의한 포커스마그네트의 자계보정을 통하여 해결하여 칼라 프로젝션텔레비젼에서 고정세화상을 얻을 수 있게 하는 실요성을 가지며 Cathod 쪽에 가까운 Ring 체는 수평방향의 beam경을 보정하고, Screen 방향의 보정링은 수직방향 beam을 보정하는 것으로 상기보존설계는 고해상도 및 고품위 투사관에 필요한 것이다.As described above, the present invention solves the focus failure caused by the magnetic field dispersion of the focus magnet through the magnetic field correction of the focus magnet by the magnetic field correction ring, and has the practicality to obtain a fixed image in the color projection television. The ring body corrects the beam diameter in the horizontal direction, and the correction ring in the screen direction corrects the beam in the vertical direction.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019900011073U KR950009823Y1 (en) | 1990-07-27 | 1990-07-27 | Magnetic compensation ring for crt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019900011073U KR950009823Y1 (en) | 1990-07-27 | 1990-07-27 | Magnetic compensation ring for crt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR920003377U KR920003377U (en) | 1992-02-25 |
| KR950009823Y1 true KR950009823Y1 (en) | 1995-11-22 |
Family
ID=19301492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019900011073U KR950009823Y1 (en) | 1990-07-27 | 1990-07-27 | Magnetic compensation ring for crt |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR950009823Y1 (en) |
-
1990
- 1990-07-27 KR KR2019900011073U patent/KR950009823Y1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR920003377U (en) | 1992-02-25 |
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