JPS61105921U - - Google Patents
Info
- Publication number
- JPS61105921U JPS61105921U JP19104984U JP19104984U JPS61105921U JP S61105921 U JPS61105921 U JP S61105921U JP 19104984 U JP19104984 U JP 19104984U JP 19104984 U JP19104984 U JP 19104984U JP S61105921 U JPS61105921 U JP S61105921U
- Authority
- JP
- Japan
- Prior art keywords
- photodetector
- light
- uneven surface
- resin
- molded
- 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
- 239000011347 resin Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 11
- 230000003287 optical effect Effects 0.000 description 2
Description
第１図ａ，ｂは本考越に係る光検出器の一つの
実施例を示す図、第２図は他の実施例を示す図、
第３図に更に他の実施例を示す図、第４図は本考
案に係る光検出器の特性図、第５図は一般的な光
学ヘツドを示す図、第６図は従来の光検出器を示
す図、第７図はトラツキング信号処理回路を示す
図、第８図ａ，ｂは第７図に示す回路の動作波形
図、第９図はトラツキングエラー信号の温度特性
図、第１０図は光干渉の発生状況の説明に供する
図である。
７は光検出器、７ａ，７ｂ，７ｃは受光素子、
７ｇは樹脂モールド、７ｈはモールド樹脂の受光
表面、７ｉは凸部、９は凹凸面９ａを有する被覆
材。
1a and 1b are diagrams showing one embodiment of the photodetector according to the present invention, and FIG. 2 is a diagram showing another embodiment,
FIG. 3 is a diagram showing still another embodiment, FIG. 4 is a characteristic diagram of a photodetector according to the present invention, FIG. 5 is a diagram showing a general optical head, and FIG. 6 is a diagram of a conventional photodetector. FIG. 7 is a diagram showing a tracking signal processing circuit, FIG. 8 a, b is an operation waveform diagram of the circuit shown in FIG. 7, FIG. 9 is a temperature characteristic diagram of a tracking error signal, and FIG. 10 is a diagram showing a tracking signal processing circuit. FIG. 2 is a diagram for explaining the situation in which optical interference occurs. 7 is a photodetector; 7a, 7b, 7c are light receiving elements;
7g is a resin mold, 7h is a light-receiving surface of the mold resin, 7i is a convex portion, and 9 is a covering material having an uneven surface 9a.
Claims (1)
つて、少なくとも光ビームが透過する範囲のモー
ルド樹脂受光表面に対して、微細な凹凸面を形成
したことを特徴とする光検出器。 (2) 微細な凹凸面が、モールド樹脂受光表面に
対して被覆された被覆材に対して形成されている
ことを特徴とする実用新案登録請求の範囲第１項
記載の光検出器。 (3) 微細な凹凸面が、モールド樹脂に対して直
接形成されていることを特徴とする実用新案登録
請求の範囲第１項記載の光検出器。[Claims for Utility Model Registration] (1) A photodetector in which a light-receiving element is molded in resin, characterized in that a finely uneven surface is formed on the light-receiving surface of the molded resin, at least in the range through which the light beam is transmitted. photodetector. (2) The photodetector according to claim 1, wherein the finely uneven surface is formed on a coating material that covers the light-receiving surface of the molded resin. (3) The photodetector according to claim 1, wherein the finely uneven surface is formed directly on the molded resin.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19104984U JPS61105921U (en) | 1984-12-17 | 1984-12-17 | |
| US06/807,562 US4697074A (en) | 1984-12-17 | 1985-12-11 | Thermally improved photodetector having a roughened, recessed, raised or inclined light receiving surface |
| DE8585115750T DE3582031D1 (en) | 1984-12-17 | 1985-12-11 | PHOTODETECTOR. |
| EP85115750A EP0186044B1 (en) | 1984-12-17 | 1985-12-11 | Photodetector |
| CA000497836A CA1269163A (en) | 1984-12-17 | 1985-12-17 | Photocell embedded in transparent resin body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19104984U JPS61105921U (en) | 1984-12-17 | 1984-12-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61105921U true JPS61105921U (en) | 1986-07-05 |
Family
ID=30748491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19104984U Pending JPS61105921U (en) | 1984-12-17 | 1984-12-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61105921U (en) |
-
1984
- 1984-12-17 JP JP19104984U patent/JPS61105921U/ja active Pending
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