JPS6168324U - - Google Patents
Info
- Publication number
- JPS6168324U JPS6168324U JP15377084U JP15377084U JPS6168324U JP S6168324 U JPS6168324 U JP S6168324U JP 15377084 U JP15377084 U JP 15377084U JP 15377084 U JP15377084 U JP 15377084U JP S6168324 U JPS6168324 U JP S6168324U
- Authority
- JP
- Japan
- Prior art keywords
- laser diode
- response
- power supply
- controls power
- circuit
- 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
Landscapes
- Optical Head (AREA)
Description
第１図は本考案におけるレーザーダイオード駆
動回路の１実施例を示す回路図、第２図は従来例
のブロツク図、第３図はレーザーダイオードの電
流対光出力特性を説明するグラフである。
１…レーザーダイオード、２…フオトダイオー
ド、３…ＡＰＣ回路、５…サーミスタ、６…過電
流検出抵抗。
FIG. 1 is a circuit diagram showing one embodiment of the laser diode drive circuit according to the present invention, FIG. 2 is a block diagram of a conventional example, and FIG. 3 is a graph illustrating the current versus light output characteristics of the laser diode. 1...Laser diode, 2...Photodiode, 3...APC circuit, 5...Thermistor, 6...Overcurrent detection resistor.
Claims (1)
Ｃ回路を備えたレーザーダイオード駆動回路にお
いて、周囲温度に応答してレーザーダイオードへ
の電力供給を制御する温度保護回路と、過電流に
応答しレーザーダイオードへの電力供給を制御す
る過電流保護回路とを設けたことを特徴とするレ
ーザーダイオード駆動回路。 Laser diode, photodiode and AP
A laser diode drive circuit equipped with a C circuit includes a temperature protection circuit that controls power supply to the laser diode in response to ambient temperature, and an overcurrent protection circuit that controls power supply to the laser diode in response to overcurrent. A laser diode drive circuit characterized in that it is provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15377084U JPS6168324U (en) | 1984-10-12 | 1984-10-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15377084U JPS6168324U (en) | 1984-10-12 | 1984-10-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6168324U true JPS6168324U (en) | 1986-05-10 |
Family
ID=30711783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15377084U Pending JPS6168324U (en) | 1984-10-12 | 1984-10-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6168324U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0191264U (en) * | 1987-12-09 | 1989-06-15 | ||
| WO2006090740A1 (en) * | 2005-02-22 | 2006-08-31 | Pioneer Corporation | Light source protecting device and disc device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58151081A (en) * | 1982-03-04 | 1983-09-08 | Matsushita Electric Ind Co Ltd | Laser power source circuit |
| JPS5945951B2 (en) * | 1980-06-30 | 1984-11-09 | アロカ株式会社 | ionization chamber |
-
1984
- 1984-10-12 JP JP15377084U patent/JPS6168324U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5945951B2 (en) * | 1980-06-30 | 1984-11-09 | アロカ株式会社 | ionization chamber |
| JPS58151081A (en) * | 1982-03-04 | 1983-09-08 | Matsushita Electric Ind Co Ltd | Laser power source circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0191264U (en) * | 1987-12-09 | 1989-06-15 | ||
| WO2006090740A1 (en) * | 2005-02-22 | 2006-08-31 | Pioneer Corporation | Light source protecting device and disc device |