JPS6174247A - Color cathode-ray tube - Google Patents
Color cathode-ray tubeInfo
- Publication number
- JPS6174247A JPS6174247A JP19538684A JP19538684A JPS6174247A JP S6174247 A JPS6174247 A JP S6174247A JP 19538684 A JP19538684 A JP 19538684A JP 19538684 A JP19538684 A JP 19538684A JP S6174247 A JPS6174247 A JP S6174247A
- Authority
- JP
- Japan
- Prior art keywords
- color
- ray tube
- diffraction grating
- color cathode
- phosphors
- 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
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
- H01J29/86—Vessels; Containers; Vacuum locks
- H01J29/89—Optical or photographic arrangements structurally combined or co-operating with the vessel
Landscapes
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、赤、緑及び青の色蛍光体が周期的に並列され
て構成された蛍光面を有するカラー陰極線管よりなるカ
ラー陰極線管装置に関する。Detailed Description of the Invention [Industrial Application Field] The present invention relates to a color cathode ray tube device comprising a color cathode ray tube having a phosphor screen composed of red, green, and blue color phosphors arranged in parallel periodically. Regarding.
赤、緑及び青の色蛍光体ストライプＲ，Ｇ、 Ｂが並列
されて蛍光面が構成されているカラー陰極線管が知られ
ている。ところが近年、特に画面の大型化に伴って、こ
の色蛍光体ストライプの縞模様が画面に見えてしま５等
、色蛍光体ストライプの木目（テクスチャー）の粗さが
目立ってきた。A color cathode ray tube is known in which a phosphor screen is constructed by aligning red, green, and blue color phosphor stripes R, G, and B. However, in recent years, especially as screens have become larger, the striped pattern of the color phosphor stripes has become visible on the screen, and the roughness of the grain (texture) of the color phosphor stripes has become noticeable.
そこで、本出願人は先に、特願昭５５−１０２，７４５
号でカラー陰極線管の前面に所定ピッチのマイクロプリ
ズムを配する装置あるいは特願昭５７−１９８．７７６
号でカラー陰極線管の前面に透明複屈折板を配する装置
を提案した。これらの装置によれば、色蛍光体ストライ
プの木目の粗さを効果的に軽減することができる。Therefore, the present applicant first applied for patent application No. 102,745/1986.
A device for arranging microprisms at a predetermined pitch on the front surface of a color cathode ray tube or a patent application No. 1988/1989.
In this issue, we proposed a device in which a transparent birefringent plate is placed in front of a color cathode ray tube. According to these devices, the roughness of the grain of the colored phosphor stripes can be effectively reduced.
しかし、マイクロプリズムはモアレを生じ易く、一方透
明複屈折板は製造コストが高いという問題がある。However, microprisms tend to cause moiré, and transparent birefringent plates have problems in that they are expensive to manufacture.
本発明は上述問題点を解決するため、赤、緑及び青の色
蛍光体が周期的に並列されて構成された蛍光面を有する
カラー陰極線管、例えば蛍光面が色蛍光体ストライプＲ
，Ｇ、Ｂで構成されるカラー陰極線管（２）の前面に１
色蛍光体の一からの回折光が他の２つの色蛍光体の間か
ら発したようになる状態で回折格子（３）が配されるも
のである。In order to solve the above-mentioned problems, the present invention provides a color cathode ray tube having a phosphor screen in which red, green, and blue color phosphors are periodically arranged in parallel, for example, the phosphor screen has color phosphor stripes R.
, G, and B on the front of the color cathode ray tube (2).
The diffraction grating (3) is arranged so that the diffracted light from one of the color phosphors is emitted from between the other two color phosphors.
回折格子（３）による色蛍光体の一からの回折光が他の
２つの色蛍光体の間から発したよ５になり、回折格子（
３）の前面で観察するとき、色蛍光体のパターン密度が
、２倍となり、木目の粗さが軽減される。The diffracted light from one of the color phosphors by the diffraction grating (3) is emitted from between the other two color phosphors, and becomes the diffraction grating (5).
When observing from the front of 3), the color phosphor pattern density is doubled and the roughness of the wood grain is reduced.
以下、図面を参照しながら本発明の一実施例について説
明しよう。Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
本例は、第１図に示すように、赤、緑及び青の色蛍光体
ストライプＲ，Ｇ、Ｂが順次並列されて蛍光面（１）が
構成されているカラー陰極線管（２）の前面に、回折格
子（３）が配される。In this example, as shown in FIG. 1, the front surface of a color cathode ray tube (2) has red, green, and blue color phosphor stripes R, G, and B arranged in sequence to form a phosphor screen (1). A diffraction grating (3) is arranged on.
回折格子（３）は、例えば第２図及び第３図に示すよう
に、ガラス板（４）上に、例えば写真製版で市松状に形
成される。この場合、回折格子（３）のピッチは水平方
向にｌｘ、垂直方向にｌｙとされ黒色部（３Ａ）と透明
部（３Ｂ）との面積が等しくなるようにされる。The diffraction grating (3) is formed in a checkered pattern on a glass plate (4) by, for example, photolithography, as shown in FIGS. 2 and 3, for example. In this case, the pitch of the diffraction grating (3) is lx in the horizontal direction and ly in the vertical direction so that the areas of the black part (3A) and the transparent part (3B) are equal.
例えばカラー陰極線管（２）が２インチ管であるとする
と、回折格子（３）は横方向の長さは５０ｗｑ縦方向の
長さは４０ｍとされ、モして１ｘ＝４０μ乳、１ｙ＝１
００Ｐ？ＦＬとされ、黒色部（３Ａ）と透明部（３Ｂ）
の対が水平方向には１２５０対、垂直方向には４００対
とされる。For example, if the color cathode ray tube (2) is a 2-inch tube, the diffraction grating (3) has a horizontal length of 50 w and a vertical length of 40 m, and 1x = 40μ, 1y = 1
00P? It is considered FL, and has a black part (3A) and a transparent part (3B).
There are 1250 pairs in the horizontal direction and 400 pairs in the vertical direction.
また、この回折格子（３）は、カラー陰極線管（２）の
蛍光面（１１に対し【所定間隔すをもって配され、そし
てこの場合、色蛍光体の一からの１次回折光Ｌ１が他の
２つの色蛍光体の間から発したようにされる。Further, this diffraction grating (3) is arranged at a predetermined interval from the phosphor screen (11) of the color cathode ray tube (2), and in this case, the first-order diffracted light L1 from one of the color phosphors is It appears to be emitted from between two colored phosphors.
ここで、緑の蛍光体Ｇかもの緑色光が最も視感度が高い
ことから、緑色光に注目して、間隔すが決定される。こ
の緑色光の波長λ＝０．５６μｍ、第４図に示すように
、色蛍光体ストライプトリオのピッチの１をｘ、０次光
り、からの１次回折光Ｌ１のずれ角をθとすると、回折
格子（３）の水平方向ピッチがｌｘであるから、ずれ角
θは、
λ
一〇＝−・・−・・（１）
ｌｘ
となる。そして、この緑色光の１次回折光Ｌ１が、赤（
Ｒ）の蛍光体と青（Ｂ）の蛍光体との間から発したよう
にするためには、
一〇＝五 ・・・・・・
（２）を満足する必要がある。従って、（１１及び（２
）式より、間隔すは、
ｂ＝ｌｘ−ｘ
ユ ・・・・・・（３）
と決定される。ここで、カラー陰極線管（２）が２イン
チ管の場合、例えばｌｘ ＝ ４０ｐ−１ｘ＝０．１０
５ｍで尚、上述（３）式は、簡単のためフェースプレー
ト（５）、ガラス板（４）の屈折率ｎｇと空気の屈折率
ｎＱとを等しく１として計算したものであるが、実際に
は屈折率の違いも考慮される。Here, since the green light of the green phosphor G has the highest visibility, the spacing is determined with attention paid to the green light. The wavelength λ of this green light is 0.56 μm, as shown in FIG. Since the horizontal pitch of the grating (3) is lx, the deviation angle θ is λ10=−·····(1) lx. The first-order diffracted light L1 of this green light is red (
In order to make it appear as if the light was emitted from between the R) phosphor and the blue (B) phosphor, 10=5...
(2) must be satisfied. Therefore, (11 and (2
), the interval is b=lx-x y (3)
It is determined that Here, if the color cathode ray tube (2) is a 2-inch tube, for example, lx = 40p-1x = 0.10
5 m.For simplicity, the above formula (3) was calculated assuming that the refractive index ng of the face plate (5) and the glass plate (4) and the refractive index nQ of the air are equal to 1, but in reality, Differences in refractive index are also taken into account.
本例は以上のように構成され、回折格子（３）により、
色蛍光体の一からの回折光Ｌ１が他の２つの色蛍光体の
間から発したようになり、第１図に示すように回折格子
（３）の前面で観察者（６）が観察するとき、Ｒ％Ｇ、
Ｂの色蛍光体ストライプのパターン密度が２倍となり、
蛍光面の木目の粗さが軽減される。This example is configured as described above, and the diffraction grating (3) allows
The diffracted light L1 from one of the color phosphors appears to be emitted from between the other two color phosphors, and is observed by the observer (6) in front of the diffraction grating (3) as shown in Figure 1. When, R%G,
The pattern density of the B color phosphor stripes is doubled,
The roughness of the grain on the phosphor screen is reduced.
本例によれば、カラー陰極線管（２）の前面に市松状の
回折格子（３）が設けられるものであり、モアレな生じ
る心配がない。また、この回折格子（３）は上述したよ
さに、例えば写真製版で容易に製造でき製造コストを低
く抑えることができる。さらに、この回折格子（３）は
外光入射を防止するニュートラルデンシティフィルタの
働きをするので、屋外等でも良好に観察できる利益があ
る。According to this example, a checkered diffraction grating (3) is provided on the front surface of the color cathode ray tube (2), so there is no concern that moiré will occur. Moreover, this diffraction grating (3) has the above-mentioned advantages and can be easily manufactured by, for example, photolithography, and the manufacturing cost can be kept low. Furthermore, since this diffraction grating (3) functions as a neutral density filter that prevents external light from entering, there is an advantage that it can be observed well even outdoors.
尚、上述実施例は回折格子（３）が市松状とされたもの
であるが、ストライプ状であってもよい。この場合でも
回折格子のピッチは色蛍光体ストライプＲ，Ｇ、Ｂのピ
ッチに比べてはるかに細かいのでモアレを生じる心配は
ない。In the above embodiment, the diffraction grating (3) has a checkered pattern, but it may have a striped pattern. Even in this case, since the pitch of the diffraction grating is much finer than the pitch of the color phosphor stripes R, G, and B, there is no fear of moiré.
また、上述実施例は色蛍光体ストライプＲ，Ｇ。Further, the above-mentioned embodiment uses color phosphor stripes R and G.
Ｂが並列され【蛍光面が構成されているものにつき述べ
たが、本発明は各色蛍光体が周期的に並列されて蛍光面
が構成されているものに同様に適用することができる。Although the phosphor screen has been described in which B is arranged in parallel, the present invention can be similarly applied to a phosphor screen in which phosphors of each color are periodically arranged in parallel.
以上述べた本発明によれば、カラー陰極線管の前面に回
折格子が設けられるものであり、モアレの心配がなく、
またこの回折格子は例えば写真製版で容易に製造でき製
造コストを低（抑えることができ、さらにこの回折格子
はニュートラルデンシティ−フィルタの働きをする利益
がある。According to the present invention described above, a diffraction grating is provided on the front surface of a color cathode ray tube, and there is no need to worry about moiré.
Further, this diffraction grating can be easily manufactured by, for example, photolithography, and the manufacturing cost can be kept low. Furthermore, this diffraction grating has the advantage of functioning as a neutral density filter.
第１図は本発明の一実施例を示す斜視図、第２図及び第
３図は回折格子を示す図、第４図は一実施例の説明のた
めの図である。
（１）は蛍光面、（２）はカラー陰極線管、（３）は回
折格子である。
第１図
第２図 第３図FIG. 1 is a perspective view showing one embodiment of the present invention, FIGS. 2 and 3 are views showing a diffraction grating, and FIG. 4 is a diagram for explaining one embodiment. (1) is a fluorescent screen, (2) is a color cathode ray tube, and (3) is a diffraction grating. Figure 1 Figure 2 Figure 3
Claims (1)
された蛍光面を有するカラー陰極線管の前面に、上記色
蛍光体の一からの回折光が上記他の２つの色蛍光体の間
から発したようになる状態で回折格子が配されることを
特徴とするカラー陰極線管装置。 ２、上記回折格子はストライプ状又は市松状とされるこ
とを特徴とする特許請求の範囲第１項記載のカラー陰極
線管装置。[Claims] 1. On the front surface of a color cathode ray tube having a phosphor screen composed of red, green, and blue color phosphors arranged in parallel periodically, the diffracted light from one of the color phosphors is A color cathode ray tube device characterized in that a diffraction grating is arranged so that the light is emitted from between two other color phosphors. 2. The color cathode ray tube device according to claim 1, wherein the diffraction grating is striped or checkered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19538684A JPS6174247A (en) | 1984-09-18 | 1984-09-18 | Color cathode-ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19538684A JPS6174247A (en) | 1984-09-18 | 1984-09-18 | Color cathode-ray tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6174247A true JPS6174247A (en) | 1986-04-16 |
Family
ID=16340294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19538684A Pending JPS6174247A (en) | 1984-09-18 | 1984-09-18 | Color cathode-ray tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6174247A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0409188A2 (en) * | 1989-07-20 | 1991-01-23 | Honeywell Inc. | Color matrix display apparatus and method for designing said apparatus |
| US7414346B1 (en) | 2000-08-29 | 2008-08-19 | Mitsubishi Denki Kabushiki Kaisha | Brush holder for dynamo-electric machine |
-
1984
- 1984-09-18 JP JP19538684A patent/JPS6174247A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0409188A2 (en) * | 1989-07-20 | 1991-01-23 | Honeywell Inc. | Color matrix display apparatus and method for designing said apparatus |
| US7414346B1 (en) | 2000-08-29 | 2008-08-19 | Mitsubishi Denki Kabushiki Kaisha | Brush holder for dynamo-electric machine |
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