JPS595022U - optical information detection device - Google Patents
optical information detection deviceInfo
- Publication number
- JPS595022U JPS595022U JP9753582U JP9753582U JPS595022U JP S595022 U JPS595022 U JP S595022U JP 9753582 U JP9753582 U JP 9753582U JP 9753582 U JP9753582 U JP 9753582U JP S595022 U JPS595022 U JP S595022U
- Authority
- JP
- Japan
- Prior art keywords
- information
- detection device
- photoelectric element
- photoelectric
- signal
- 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.)
- Granted
Links
Landscapes
- Optical Recording Or Reproduction (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図ａおよびｂは従来装置の構成を示すそれぞれ回路
図および４分割型光電素子の位置関係を示す図、第２図
は情報信号とサーボ用信号の周波数域を示す図、第３図
は本考案の一実施例の構成を示す回路構成図、第４図お
よび第５図は本考案の他のそれぞれ異なる実施例の構成
を示す要部の回路構成図である。
ＰＤａ〜ＰＤｄ・・・フォトダイオード、Ｒｃ、 Ｒｏ
、。
Ｒｏ２． Ｒ□〜Ｒ４・・・抵抗、ＡＤ□〜ＡＤ６・・
・アナログ演算器、ＡＳ・・・増幅器、ＣＦ・・・コン
デンサ、Ｅ・・・電源。Figures 1a and 1b are circuit diagrams showing the configuration of a conventional device and the positional relationship of the 4-split photoelectric elements, Figure 2 is a diagram showing the frequency range of information signals and servo signals, and Figure 3 is FIGS. 4 and 5 are circuit diagrams showing the configuration of one embodiment of the present invention, and FIGS. 4 and 5 are circuit diagrams of main parts showing the configurations of other different embodiments of the present invention. PDa~PDd...Photodiode, Rc, Ro
,. Ro2. R□~R4...Resistance, AD□~AD6...
・Analog computing unit, AS...amplifier, CF...capacitor, E...power supply.
Claims (1)
情報媒体に光ビームを照射し、その反射光を４分割型光
電素子により検出し、上記情報媒体における情報信号お
よび上記光ビームのトラッキングおよび・またはフォー
カス制御のためのサーボ用信号を得る光学的情報検出装
置において、上記４分割型光電素子を形成する４個の光
電素子の各一端側にそれぞれ直列に抵抗を設は且つこれ
ら４個の直列回路を全部または２個ずつ並列に接続する
とともに、共通接続された光電素子の他端側に該並列回
路に直列に抵抗を設けてなり、上記各光電素子の上記一
端側から各光電素子出力を取り出して上記サーボ用信号
を得、上記光電素子の共通接続された上記他端側より信
号を取り出して各光電素子出力の総和である情報信号を
得る構成としたことを特徴とする光学的情報検出装置。 。[Claims for Utility Model Registration] A light beam is irradiated onto an information medium on which information is recorded with an information track consisting of an uneven surface, and the reflected light is detected by a 4-division photoelectric element, and the information signal on the information medium and the above-mentioned In an optical information detection device for obtaining a servo signal for tracking and/or focus control of a light beam, a resistor is provided in series at one end of each of the four photoelectric elements forming the four-division photoelectric element. All or two of these four series circuits are connected in parallel, and a resistor is provided in series with the parallel circuit on the other end side of the commonly connected photoelectric elements, and the one end side of each of the photoelectric elements is connected in parallel. The output of each photoelectric element is taken out to obtain the servo signal, and the signal is taken out from the other commonly connected end of the photoelectric element to obtain an information signal that is the sum of the outputs of each photoelectric element. Optical information detection device. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9753582U JPS595022U (en) | 1982-06-30 | 1982-06-30 | optical information detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9753582U JPS595022U (en) | 1982-06-30 | 1982-06-30 | optical information detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS595022U true JPS595022U (en) | 1984-01-13 |
| JPH0240579Y2 JPH0240579Y2 (en) | 1990-10-30 |
Family
ID=30231965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9753582U Granted JPS595022U (en) | 1982-06-30 | 1982-06-30 | optical information detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS595022U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04153190A (en) * | 1990-10-01 | 1992-05-26 | Mitsubishi Electric Corp | Elevator hall door device |
| JPH04153193A (en) * | 1990-10-01 | 1992-05-26 | Mitsubishi Electric Corp | Elevator hall door device |
| JPH04153192A (en) * | 1990-10-01 | 1992-05-26 | Mitsubishi Electric Corp | Elevator hall door device |
-
1982
- 1982-06-30 JP JP9753582U patent/JPS595022U/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04153190A (en) * | 1990-10-01 | 1992-05-26 | Mitsubishi Electric Corp | Elevator hall door device |
| JPH04153193A (en) * | 1990-10-01 | 1992-05-26 | Mitsubishi Electric Corp | Elevator hall door device |
| JPH04153192A (en) * | 1990-10-01 | 1992-05-26 | Mitsubishi Electric Corp | Elevator hall door device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0240579Y2 (en) | 1990-10-30 |
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