JPH023247Y2 - - Google Patents
Info
- Publication number
- JPH023247Y2 JPH023247Y2 JP1979102224U JP10222479U JPH023247Y2 JP H023247 Y2 JPH023247 Y2 JP H023247Y2 JP 1979102224 U JP1979102224 U JP 1979102224U JP 10222479 U JP10222479 U JP 10222479U JP H023247 Y2 JPH023247 Y2 JP H023247Y2
- Authority
- JP
- Japan
- Prior art keywords
- phosphor
- index
- picture tube
- light
- ultraviolet light
- 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
Links
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 37
- 238000010894 electron beam technology Methods 0.000 claims description 10
- 230000005284 excitation Effects 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000011295 pitch Substances 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Landscapes
- Electrodes For Cathode-Ray Tubes (AREA)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
Description
【考案の詳細な説明】
本考案は、ビームインデツクス型カラーテレビ
ジヨンに於ける受像管の改良に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a picture tube in a beam index type color television.
一般にビームインデツクス型カラー受像管は、
第2図及び第3図に示す如く、フエースプレート
16の内面に、赤緑青の三原色螢光体条21,2
2,23を繰り返し塗布して螢光面2が形成さ
れ、該螢光面2上に、1組の三原色螢光体条(1
トリプレツトと称す)のピツチと一定の関係を有
するピツチでインデツクス螢光体条3が設けられ
ている。この螢光面2上を単電子ビーム15で走
査すると、インデツクス螢光体条3が励起されて
光信号31を発する。該信号31を受像管のフア
ネル部17に配備した光検出器4で検出すること
により、単電子ビーム15の正確な走査位置を求
め、更にこの信号で三原色信号を切換えて電子銃
に供給することにより、電子ビームを制御して、
適正なカラー画像を再生している。 In general, beam index type color picture tubes are
As shown in FIGS. 2 and 3, three primary color phosphor strips 21 and 2 of red, green and blue are provided on the inner surface of the face plate 16.
2 and 23 are repeatedly applied to form a fluorescent surface 2, and on the fluorescent surface 2, a set of three primary color phosphor strips (1
Index phosphor strips 3 are provided at pitches which have a fixed relationship with the pitches of the triplets (referred to as triplets). When this phosphor surface 2 is scanned with a single electron beam 15, the index phosphor strip 3 is excited and emits an optical signal 31. By detecting the signal 31 with the photodetector 4 provided in the funnel section 17 of the picture tube, the accurate scanning position of the single electron beam 15 is determined, and furthermore, the three primary color signals are switched using this signal and supplied to the electron gun. By controlling the electron beam,
An appropriate color image is being played.
上記インデツクス螢光体条3は、電子ビーム1
5の走査時に、走査位置に厳密に一致した応答速
度の速いインデツクス信号を発することが正常な
カラー再生を行なう上での必要条件である。従つ
て通常インデツクス光信号31の減衰時間は
20nsec以下であることが要求され、更にフアネル
部17のガラス壁を通して信号31を検知する関
係上、ガラス壁で減衰の少ない可視光、赤外光或
は可視域に近い紫外光に発光波長が限定される。 The index phosphor strip 3 has an electron beam 1
It is a necessary condition for normal color reproduction to generate an index signal with a fast response speed that closely matches the scanning position during scanning. Therefore, the decay time of the index optical signal 31 is usually
20 nsec or less, and since the signal 31 is detected through the glass wall of the funnel section 17, the emission wavelength is limited to visible light, infrared light, or ultraviolet light close to the visible range, which is less attenuated by the glass wall. be done.
従来上記条件を満足する螢光体としては、例え
ばP47等が一般に知られているが、これらは何
れも紫外域に発光中心を有するものである為、使
用出来る光検出器4は光電子増倍管或は光電管の
如く紫外域まで感度帯域を有する電子管式のもの
に限定され、可視光或は赤外光に感度域を具えた
固体素子は利用出来ない。電子管は固体素子に比
較して製作コストが高価となり、しかも高電圧を
必要とする等、取り扱いも難しいため、安価で取
り扱いが容易な固体素子の利用が望まれていた。 Conventionally, P47, for example, is generally known as a fluorescent substance that satisfies the above conditions, but since all of these have emission centers in the ultraviolet region, the photodetector 4 that can be used is a photomultiplier tube. Alternatively, it is limited to electron tube type devices such as phototubes that have a sensitivity range that extends to the ultraviolet region, and solid-state devices that have a sensitivity range of visible light or infrared light cannot be used. Electron tubes are more expensive to manufacture than solid-state devices, and require high voltage and are difficult to handle, so it has been desired to use solid-state devices that are inexpensive and easy to handle.
本考案は、受像管中へインデツクス螢光体条
と、該螢光体条から発せられる紫外光に励起され
て可視光を発する光変換用の螢光体を具えること
により、光検出器は従来の電子管に限定されず、
可視域で作動する安価な固体素子が利用出来るビ
ームインデツクス型カラー受像管を提供するもの
である。 The present invention provides a photodetector by providing an index phosphor strip in the picture tube and a phosphor for light conversion that emits visible light when excited by ultraviolet light emitted from the phosphor strip. Not limited to conventional electron tubes,
The object of the present invention is to provide a beam index type color picture tube that can utilize inexpensive solid-state elements that operate in the visible range.
以下図面に示す実施例に基づき、本考案を具体
的に説明する。 The present invention will be specifically described below based on embodiments shown in the drawings.
本考案にかかるビームインデツクス型カラー受
像管1は、第1図に示す如く、ネツク11部分に
配備した1本の電子銃14より単電子ビーム15
を放出し、このビーム15を偏向コイル12で振
らせてフエースプレート16の内面に形成した螢
光面2上を走査させる。 The beam index type color picture tube 1 according to the present invention, as shown in FIG.
is emitted, and this beam 15 is swung by a deflection coil 12 to scan a fluorescent surface 2 formed on the inner surface of a face plate 16.
螢光面2は、第2図に示す如く、赤、緑、青の
三原色螢光体条21,22,23を繰り返し塗布
し、螢光体条間には黒鉛等を以つて形成した非発
光物質24を介装して形成される。 As shown in FIG. 2, the phosphor surface 2 is formed by repeatedly applying phosphor strips 21, 22, 23 in the three primary colors of red, green, and blue, and between the phosphor strips, a non-luminescent material made of graphite or the like is formed. It is formed with a substance 24 interposed therebetween.
螢光面2上には、アルミメタルバツク25が一
様に蒸着され、更にその上へ三原色螢光体条2
1,22,23と一定関係、例えば三原色螢光体
条の1トリプレツトのピツチと同一ピツチでイン
デツクス螢光体条3を全走査面に亘り塗布してい
る。 An aluminum metal bag 25 is uniformly deposited on the phosphor surface 2, and three primary color phosphor strips 2 are further applied thereon.
The index phosphor strip 3 is coated over the entire scanning surface in a fixed relationship with the index phosphor strips 1, 22, and 23, for example, at the same pitch as one triplet of the three primary color phosphor strips.
インデツクス螢光体条3には電子ビーム15の
走査時に、電子ビーム15で励起されて減衰時間
が20nsec以下の紫外光を発する螢光体、例えばP
47が使用される。 The index phosphor strip 3 is a phosphor that emits ultraviolet light with a decay time of 20 nsec or less when excited by the electron beam 15 during scanning with the electron beam 15, for example, P
47 is used.
フアネル部17の内面はインデツクス光信号6
1の取出し窓51を除いて金属膜5で一様に覆
う。該金属膜5は、アルミニウム蒸着等によつて
形成され、前記アルミメタルバツク25と電気的
に接続することにより、フアネル部内面を等電位
に保ち、画像再生時の電子ビームの乱れを防止
し、適正なカラー再生を行なう。 The inner surface of the funnel portion 17 receives the index optical signal 6.
All but one extraction window 51 is uniformly covered with a metal film 5. The metal film 5 is formed by aluminum vapor deposition or the like, and is electrically connected to the aluminum metal bag 25 to maintain the inner surface of the funnel portion at an equal potential, thereby preventing disturbance of the electron beam during image reproduction. Perform proper color reproduction.
フアネル部17の内面は、上記の如く金属膜5
で覆つた後、更にインデツクス信号変換用の螢光
体6を一様に塗布する。該変換用螢光体6は、イ
ンデツクス螢光体条3から発せられる紫外光31
を受けて、減衰時間が20nsec以下の可視光或は赤
外光を発するものであつて、本実施例に於いては
緑色の発光色を有するCeTbMgAl11O19:Ceが使
用される。 The inner surface of the funnel portion 17 is covered with the metal film 5 as described above.
After covering with phosphor 6, a phosphor 6 for index signal conversion is further uniformly applied. The conversion phosphor 6 emits ultraviolet light 31 emitted from the index phosphor strip 3.
Accordingly, CeTbMgAl 11 O 19 :Ce, which emits visible light or infrared light with a decay time of 20 nsec or less, and which emits green light, is used in this embodiment.
上記の螢光面2上を単電子ビーム15で走査す
ると、ビーム15の走査位置に対応するインデツ
クス螢光体条3からは、紫外光31が放出され
る。該紫外光31は、フアネル部17に設けたイ
ンデツクス信号変換用螢光体を励起して可視光6
1を発生させる。該可視光61は、金属膜5で反
射され、金属膜5に設けた窓部51から有効に受
像管外部に取出される。 When the fluorescent surface 2 is scanned by the single electron beam 15, ultraviolet light 31 is emitted from the index phosphor strip 3 corresponding to the scanning position of the beam 15. The ultraviolet light 31 excites a phosphor for index signal conversion provided in the funnel section 17 to generate visible light 6.
Generate 1. The visible light 61 is reflected by the metal film 5 and is effectively extracted to the outside of the picture tube through a window 51 provided in the metal film 5.
上記の如く外部に放出された光信号61は、窓
部51に対応してフアネル部17の外面に接近し
て配備した光検出器4、例えば可視光域に感度域
を有するフオトトランジスター等の固体素子で検
出して電気信号に変換し、周波数選択器71でイ
ンデツクス螢光体条3のピツチに対応した信号の
みを取出し、更に増幅器72で増幅する。 The optical signal 61 emitted to the outside as described above is detected by a photodetector 4 disposed close to the outer surface of the funnel section 17 corresponding to the window section 51, for example, a solid state such as a phototransistor having a sensitivity range in the visible light region. The signal is detected by an element and converted into an electric signal, and a frequency selector 71 extracts only a signal corresponding to the pitch of the index phosphor strip 3, which is further amplified by an amplifier 72.
而る後、該信号は信号処理回路73に送られ、
従来と略同様な方法で三原色螢光体条のピツチに
対応した周波数で且つ、単電子ビーム15の走査
位置に同期したインデツクス信号に変換され、カ
ラー再生に利用される。 After that, the signal is sent to the signal processing circuit 73,
In substantially the same manner as in the conventional method, the index signal is converted into an index signal having a frequency corresponding to the pitch of the three primary color phosphor stripes and synchronized with the scanning position of the single electron beam 15, and used for color reproduction.
又、インデツクス螢光体条3も、発光を外部に
取出す必要がない為、その材料は可視光に近い紫
外光を発するものに限定されず、真空紫外域の発
光を呈するものも利用出来る。 Furthermore, since the index phosphor strip 3 does not need to take out the emitted light to the outside, the material thereof is not limited to those that emit ultraviolet light close to visible light, and materials that emit light in the vacuum ultraviolet region can also be used.
本考案は上記の如く、紫外光31を発するイン
デツクス螢光体条3と、紫外光31の励起により
可視光或は赤外光61を発するインデツクス信号
変換用の螢光体6を具えたので、インデツクス信
号の検出に使用出来る光検出器4の種類は従来の
如く、紫外域から可視光までの広い感度帯域を有
するものに限定されることはなく、可視光又は赤
外光で反応する安価な取り扱い易い固体素子が利
用出来る優れた効果を有する。 As described above, the present invention includes the index phosphor strip 3 that emits ultraviolet light 31 and the phosphor 6 for index signal conversion that emits visible light or infrared light 61 upon excitation of the ultraviolet light 31. The types of photodetectors 4 that can be used to detect index signals are not limited to those that have a wide sensitivity band from the ultraviolet region to visible light, as in the past, but instead are inexpensive ones that react with visible or infrared light. It has the excellent effect of being able to use solid-state devices that are easy to handle.
第1図は本考案にかかる受像管を使用したビー
ムインデツクス式受像機の概略図、第2図は螢光
面の拡大断面図、第3図は従来例を示す断面図で
ある。
21,22,23……三原色螢光体条、3……
インデツクス螢光体条、6……インデツクス信号
変換用螢光体。
FIG. 1 is a schematic view of a beam index type receiver using a picture tube according to the present invention, FIG. 2 is an enlarged sectional view of a fluorescent surface, and FIG. 3 is a sectional view of a conventional example. 21, 22, 23... Three primary color phosphor stripes, 3...
Index phosphor strip, 6... phosphor for index signal conversion.
Claims (1)
三原色螢光体条のピツチと一定関係を保つて、電
子ビームの励起により紫外光を発するインデツク
ス螢光体条3を設けたビームインデツクス型カラ
ー受像管に於いて、 フアンネル部内面に形成され、前記紫外光によ
る励起によつて可視光或は赤外光を発生して受像
管内部に再び出力するインデツクス信号変換用螢
光体6と、 この受像管内部の可視光或は赤外光を受像管外
部に導出する窓部51と、 この窓部51に対応する前記受像管外部に配置
された光検出器4と、 を具えたことを特徴とするビームインデツクス型
カラー受像管。[Scope of claim for utility model registration] On a fluorescent surface repeatedly coated with three primary color phosphor strips,
In a beam index type color picture tube provided with an index phosphor strip 3 that emits ultraviolet light by excitation of an electron beam in a constant relationship with the pitch of the three primary color phosphor strips, it is formed on the inner surface of the funnel part, an index signal converting phosphor 6 that generates visible light or infrared light when excited by the ultraviolet light and outputs it again to the inside of the picture tube; A beam index type color picture tube comprising: a window portion 51 leading out of the tube; and a photodetector 4 disposed outside the picture tube corresponding to the window portion 51.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1979102224U JPH023247Y2 (en) | 1979-07-23 | 1979-07-23 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1979102224U JPH023247Y2 (en) | 1979-07-23 | 1979-07-23 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5620263U JPS5620263U (en) | 1981-02-23 |
JPH023247Y2 true JPH023247Y2 (en) | 1990-01-25 |
Family
ID=29334957
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1979102224U Expired JPH023247Y2 (en) | 1979-07-23 | 1979-07-23 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH023247Y2 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54121664A (en) * | 1978-03-14 | 1979-09-20 | Sony Corp | Optical detecting device |
-
1979
- 1979-07-23 JP JP1979102224U patent/JPH023247Y2/ja not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54121664A (en) * | 1978-03-14 | 1979-09-20 | Sony Corp | Optical detecting device |
Also Published As
Publication number | Publication date |
---|---|
JPS5620263U (en) | 1981-02-23 |
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