JPS61170125U - - Google Patents
Info
- Publication number
- JPS61170125U JPS61170125U JP5234085U JP5234085U JPS61170125U JP S61170125 U JPS61170125 U JP S61170125U JP 5234085 U JP5234085 U JP 5234085U JP 5234085 U JP5234085 U JP 5234085U JP S61170125 U JPS61170125 U JP S61170125U
- Authority
- JP
- Japan
- Prior art keywords
- photodiode
- series
- current
- photodiodes
- same polarity
- 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
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
Description
第１図はこの考案の一実施例の接続図、第２図
はこの考案の一実施例の説明に用いる接続図、第
３図は従来の光検出回路の接続図である。
図面における主要な符号の説明、１，２：フオ
トダイオード、５：演算増幅器、６：抵抗、７：
出力端子。
FIG. 1 is a connection diagram of an embodiment of this invention, FIG. 2 is a connection diagram used to explain an embodiment of this invention, and FIG. 3 is a connection diagram of a conventional photodetection circuit. Explanation of main symbols in the drawings, 1, 2: Photodiode, 5: Operational amplifier, 6: Resistor, 7:
Output terminal.
Claims (1)
ードとを同極性で直列接続し、上記第１及び第２
のフオトダイオードの直列接続に逆バイアスを印
加し、上記第１のフオトダイオードと上記第２の
フオトダイオードの接続点に生じく上記第１のフ
オトダイオードの電流と上記第２のフオトダイオ
ードの電流との差電流を電圧出力に変換するよう
にした光検出回路。 A first photodiode and a second photodiode are connected in series with the same polarity, and the first and second photodiodes are connected in series with the same polarity.
A reverse bias is applied to the series connection of the photodiodes, and the current of the first photodiode and the current of the second photodiode are generated at the connection point of the first photodiode and the second photodiode. A photodetection circuit that converts the difference current between the two into voltage output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5234085U JPS61170125U (en) | 1985-04-09 | 1985-04-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5234085U JPS61170125U (en) | 1985-04-09 | 1985-04-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61170125U true JPS61170125U (en) | 1986-10-22 |
Family
ID=30572205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5234085U Pending JPS61170125U (en) | 1985-04-09 | 1985-04-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61170125U (en) |
-
1985
- 1985-04-09 JP JP5234085U patent/JPS61170125U/ja active Pending