JPS6326920Y2 - - Google Patents
Info
- Publication number
- JPS6326920Y2 JPS6326920Y2 JP16510780U JP16510780U JPS6326920Y2 JP S6326920 Y2 JPS6326920 Y2 JP S6326920Y2 JP 16510780 U JP16510780 U JP 16510780U JP 16510780 U JP16510780 U JP 16510780U JP S6326920 Y2 JPS6326920 Y2 JP S6326920Y2
- Authority
- JP
- Japan
- Prior art keywords
- lens
- index
- picture tube
- light
- photodetecting element
- 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
- 230000003287 optical effect Effects 0.000 claims description 14
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 7
- 239000012780 transparent material Substances 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 2
- 238000001514 detection method Methods 0.000 description 6
- 239000003822 epoxy resin Substances 0.000 description 4
- 229920000647 polyepoxide Polymers 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
- Cathode-Ray Tubes And Fluorescent Screens For Display (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受像管装
置に関するものである。ビームインデツクス型カ
ラー受像管は第１図に示すようにフエースプレー
ト１内面に三原色蛍光体Ｒ，Ｇ，Ｂを黒色のガー
ドバンド２を挟む如くストライプ状に順次繰返し
配すると共にその内面にアルミニウム膜よりなる
メルバツク３を介してインデツクス蛍光体４をス
トライプ状に繰返し配した面を第２図に示すよう
に単一電子銃５により放射した電子ビーム６を掃
引したとき前記インデツクス蛍光体４から得られ
る光信号７を受像管の背面に形成した光透過窓８
を介して光検出器９に導びくようになつており、
この検出器９でキヤツチされ電気信号に変換され
たインデツクス信号を使つて前記ビームが所定の
蛍光体を衝撃するようにしている。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a beam index type color picture tube device. As shown in Fig. 1, the beam index type color picture tube has three primary color phosphors R, G, and B repeatedly arranged in a stripe pattern on the inner surface of the face plate 1 with a black guard band 2 in between, and an aluminum film on the inner surface. When an electron beam 6 emitted by a single electron gun 5 is swept over a surface on which index phosphors 4 are repeatedly arranged in a striped manner through a melbac 3 made of A light transmission window 8 in which an optical signal 7 is formed on the back of the picture tube
It is designed to lead to the photodetector 9 via the
The index signal caught by the detector 9 and converted into an electrical signal is used to cause the beam to impact a predetermined phosphor.
しかし、この受像管においてはインデツクス蛍
光体４から発生した光信号が四方に分散され、し
かも光検出器９の受光面が有限であるため光信号
の電気信号に変換する効率が非常に悪くなる。そ
のため光検出器として光電子増倍管や光電管など
の如き高感度で比較的受光面の広いものを使用せ
ざるを得ないが、斯る光電子増倍管や光電管はコ
ストが高いという欠点を有する。 However, in this picture tube, the optical signal generated from the index phosphor 4 is dispersed in all directions, and the light-receiving surface of the photodetector 9 is limited, so that the efficiency of converting the optical signal into an electrical signal is extremely poor. Therefore, it is necessary to use a photodetector such as a photomultiplier tube or a phototube, which has high sensitivity and a relatively wide light-receiving surface, but such a photomultiplier tube or phototube has the disadvantage of being expensive.
それ故、本考案は検出器に光集光のよい構造を
施して低価格で量産化の可能なフオトダイオード
やフオトトランジスタ等の固体光検出素子を用い
ることができるようにすることを目的とする。以
下図面に従つて本考案を詳述する。 Therefore, the purpose of the present invention is to provide a detector with a structure that allows good light focusing, so that solid-state photodetecting elements such as photodiodes and phototransistors, which can be mass-produced at low cost, can be used. . The present invention will be described in detail below with reference to the drawings.
一般に小さい受光面に光を効率よく集めるため
にはレンズが用いられる。しかし、レンズを用い
たとき第３図ａに示す如く光検出素子の受光面に
到達する光に角度制限が生じることがある。即
ち、レンズ１０と光検出素子１１の間に空間つま
り空気（光屈折率ｎ約1.0）が存在するため全反
射の臨界角を有する光学的界面が形成されインデ
ツクス光信号の有効入射角は38゜以内となる。ち
なみにレンズの屈折率ｎは約1.6である。一方20
インチ90゜偏向の受像管で要求される有効入射角
は70゜程度であるからインデツクス光信号の有効
入射角が38゜以内に過ぎない集光構造の検出器で
は実用に供しえない。第３図ｂはレンズ１０と光
検出素子１１間にエポキシ樹脂１２を充填した場
合であるが、エポキシ樹脂の屈折率ｎは1.58程度
であるため有効入射角は80゜まで拡大する。該充
填物はインデツクス光信号に対し透明で屈折率が
レンズ１０の屈折率の0.9倍以上である。 Generally, a lens is used to efficiently collect light onto a small light-receiving surface. However, when a lens is used, there may be an angular restriction on the light reaching the light receiving surface of the photodetecting element, as shown in FIG. 3a. That is, since there is a space, that is, air (optical refractive index n approximately 1.0) between the lens 10 and the photodetector element 11, an optical interface having a critical angle for total reflection is formed, and the effective incident angle of the index optical signal is 38 degrees. Within. Incidentally, the refractive index n of the lens is approximately 1.6. while 20
Since the effective angle of incidence required for a picture tube with a 90-inch deflection is approximately 70 degrees, a detector with a condensing structure in which the effective angle of incidence of the index optical signal is no more than 38 degrees cannot be put to practical use. FIG. 3b shows a case where epoxy resin 12 is filled between lens 10 and photodetector element 11, and since the refractive index n of the epoxy resin is about 1.58, the effective angle of incidence is expanded to 80°. The filling is transparent to the index optical signal and has a refractive index that is 0.9 times or more the refractive index of the lens 10.
次にレンズで光検出素子受光面にインデツクス
光信号を集光する場合、インデツクス光の光源で
あるインデツクス蛍光体４はフエースプレート内
面の全面に上述した規則に従つて設けられてお
り、しかも第２図に示すようにメタルバツク３は
受像管の背面にも及んでいるため事実上の光源は
レンズ口径に比べて非常に大きくなり、光検出素
子１１の受光面に集光できないばかりでなくイン
デツクス光信号の発光場所により集光率が変化し
場所的にインデツクス電気信号のSN比が大きく
なり、不都合である。 Next, when the index light signal is focused on the light-receiving surface of the photodetector element using a lens, the index phosphor 4, which is the light source of the index light, is provided on the entire inner surface of the face plate in accordance with the above-mentioned rules, and the second As shown in the figure, since the metal back 3 extends to the back of the picture tube, the actual light source becomes extremely large compared to the lens aperture, and not only cannot the light be focused on the light receiving surface of the photodetector 11, but also the index optical signal cannot be collected. The light collection rate changes depending on the light emitting location, and the S/N ratio of the index electric signal increases depending on the location, which is inconvenient.
しかるに本考案では第４図に示すようにレンズ
１０と、該レンズ１０に対向するフオトダイオー
ド等の固体性光検出素子１１と、それらの間に施
され屈折率が前記レンズの0.9倍以上の透明物質
１２′と、前記透明物質の周囲に施され光信号を
有効に前記光検出素子に導びくように前記レンズ
側から光検出素子に向けて先細りの形状を有する
反射層１３とを備える光検出器１４を受像管背面
の光透過窓８に取り付けようにしたので、発光源
の場所的位置に影響されない高効率の光検出構造
を実現することができる。尚、斯るインデツクス
光信号の検出構造の形式は、予めセラミツク基板
１５に形成された光検出素子１１を円錐状内面を
有する枠体１６の該円錐状内面にアルミニウム膜
などの反射層１３を施した後、受像管に固定し、
続いてレンズ１０と光検出素子１１との間の空隙
にエポキシ樹脂等の透明物質１２′を充填するこ
とにより行なわれる。尚、前記透明物質１２′と
してはエポキシ樹脂に限定されることなく、上述
した性質を有するものである限り他の樹脂でもよ
い。また、反射層１３の反射表面はインデツクス
光を光検出素子に導びく機能を発揮する限り円錐
形状に限定されない。尚、第４図において不必要
な光が光検出素子１１に到達するのを防ぐため適
当な箇所に光学フイルタを挿入するとよい。 However, in the present invention, as shown in FIG. 4, a lens 10, a solid-state photodetector element 11 such as a photodiode facing the lens 10, and a transparent material provided between them and having a refractive index of 0.9 times or more that of the lens A light detection device comprising: a material 12'; and a reflective layer 13 applied around the transparent material and having a tapered shape from the lens side toward the light detection element so as to effectively guide optical signals to the light detection element. Since the device 14 is attached to the light transmission window 8 on the back side of the picture tube, a highly efficient light detection structure that is not affected by the spatial position of the light emitting source can be realized. Incidentally, the format of the detection structure for such an index optical signal is such that a photodetecting element 11 is formed in advance on a ceramic substrate 15 and a reflective layer 13 such as an aluminum film is applied to the conical inner surface of a frame 16 having a conical inner surface. After that, fix it on the picture tube,
Subsequently, the gap between the lens 10 and the photodetecting element 11 is filled with a transparent material 12' such as epoxy resin. Note that the transparent material 12' is not limited to epoxy resin, but may be any other resin as long as it has the above-mentioned properties. Further, the reflective surface of the reflective layer 13 is not limited to a conical shape as long as it functions to guide the index light to the photodetecting element. Incidentally, in FIG. 4, it is preferable to insert an optical filter at an appropriate location to prevent unnecessary light from reaching the photodetecting element 11.
以上説明したように本考案によれば、インデツ
クス光の発光源の全位置をカバーする光検出が実
現でき、しかもそのインデツクス光の集光効率の
良い検出器構造としているので光検出素子として
受光面の小さいフオトダイオードやフオトトラン
ジスタ等の安価な素子を用いることができるとい
う効果があり本考案は極めて有効である。 As explained above, according to the present invention, it is possible to realize light detection that covers all positions of the index light emission source, and the detector structure has a high efficiency of condensing the index light. The present invention is extremely effective because it allows the use of inexpensive elements such as photodiodes and phototransistors with small values.
第１図はビームインデツクス型カラー受像管の
フエースプレート内面の様子を示す図面であり、
第２図はビームインデツクス型カラー受像管装置
の概略を示す断面図である。第３図は本考案の装
置を説明するための図面であり、第４図は本考案
を実施したビームインデツクス型カラー受像管装
置の要部断面図である。
１……フエースプレート、４……インデツクス
蛍光体、８……光透過窓、１１……光検出素子、
１２′……透明物質、１３……反射層、１４……
光検出器、Ｒ，Ｇ，Ｂ……三原色蛍光体。
FIG. 1 is a drawing showing the inner surface of the face plate of a beam index type color picture tube.
FIG. 2 is a sectional view schematically showing a beam index type color picture tube device. FIG. 3 is a drawing for explaining the apparatus of the present invention, and FIG. 4 is a sectional view of a main part of a beam index type color picture tube apparatus in which the present invention is implemented. DESCRIPTION OF SYMBOLS 1... Face plate, 4... Index phosphor, 8... Light transmission window, 11... Photodetection element,
12'... Transparent substance, 13... Reflective layer, 14...
Photodetector, R, G, B... three primary color phosphors.
Claims (1)
蛍光体ストライプと、これら三原色蛍光体ストラ
イプと規則的関連をもつてストライプ状に繰返し
配されたインデツクス蛍光体とからなる面を単一
電子銃により放射された電子ビームを掃引したと
き前記インデツクス蛍光体から生じる光信号を受
像管の背面に形成された光透過窓を通して外部の
光検出器に導くようにしたビームインデツクス型
カラー受像管装置において、レンズと、該レンズ
に対向する光検出素子と、前記レンズと光検出素
子間に施され屈折率が前記レンズの0.9倍以上の
透明物質と、前記透明物質の周囲に施され光信号
を有効に前記光検出素子に導びくように前記レン
ズ側から光検出素子に向けて先細りの形状を有す
る反射層とを備える光検出器を前記受像管の光透
過窓に取り付け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装置。 Electrons emitted by a single electron gun pass through a surface consisting of three primary color phosphor stripes repeatedly arranged on the inner surface of the face plate and index phosphors repeatedly arranged in a striped manner in regular relationship with these three primary color phosphor stripes. In a beam index type color picture tube device in which an optical signal generated from the index phosphor when the beam is swept is guided to an external photodetector through a light transmission window formed on the back surface of the picture tube, a photodetecting element facing the lens; a transparent material disposed between the lens and the photodetecting element and having a refractive index of 0.9 times or more that of the lens; and a transparent substance disposed around the transparent material for effectively transmitting optical signals. A beam index type color image receiver, characterized in that a photodetector comprising a reflective layer tapered from the lens side toward the photodetecting element so as to guide the image to the light transmitting window of the picture tube is attached to the light transmitting window of the picture tube. tube device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16510780U JPS6326920Y2 (en) | 1980-11-17 | 1980-11-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16510780U JPS6326920Y2 (en) | 1980-11-17 | 1980-11-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5786256U JPS5786256U (en) | 1982-05-27 |
| JPS6326920Y2 true JPS6326920Y2 (en) | 1988-07-21 |
Family
ID=29523815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16510780U Expired JPS6326920Y2 (en) | 1980-11-17 | 1980-11-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6326920Y2 (en) |
-
1980
- 1980-11-17 JP JP16510780U patent/JPS6326920Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5786256U (en) | 1982-05-27 |
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