JPS61127659U - - Google Patents
Info
- Publication number
- JPS61127659U JPS61127659U JP1169685U JP1169685U JPS61127659U JP S61127659 U JPS61127659 U JP S61127659U JP 1169685 U JP1169685 U JP 1169685U JP 1169685 U JP1169685 U JP 1169685U JP S61127659 U JPS61127659 U JP S61127659U
- Authority
- JP
- Japan
- Prior art keywords
- semiconductor laser
- switching element
- current source
- constant current
- turned
- 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
- 239000004065 semiconductor Substances 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Dot-Matrix Printers And Others (AREA)
- Laser Beam Printer (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
Description
第１図及び第２図は本考案の各実施例を示す回
路図、第３図は従来方式を示す回路図である。
２１，３４……半導体レーザ、２３，３６……
定電流源、２４，３３……スイツチング素子。
1 and 2 are circuit diagrams showing each embodiment of the present invention, and FIG. 3 is a circuit diagram showing a conventional system. 21, 34... Semiconductor laser, 23, 36...
Constant current source, 24, 33... switching element.
Claims (1)
続された定電流源と、上記半導体レーザと並列に
設けられ変調信号によりオン、オフするスイツチ
ング素子とを備えた半導体レーザ変調方式。 A semiconductor laser modulation system comprising a semiconductor laser, a constant current source connected in series to the semiconductor laser, and a switching element provided in parallel with the semiconductor laser and turned on and off by a modulation signal.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1169685U JPS61127659U (en) | 1985-01-30 | 1985-01-30 | |
| US07/270,474 US4856011A (en) | 1985-01-30 | 1988-11-08 | Semiconductor laser control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1169685U JPS61127659U (en) | 1985-01-30 | 1985-01-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61127659U true JPS61127659U (en) | 1986-08-11 |
Family
ID=30494055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1169685U Pending JPS61127659U (en) | 1985-01-30 | 1985-01-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61127659U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63143887A (en) * | 1986-12-08 | 1988-06-16 | Ricoh Co Ltd | Semiconductor laser driving circuit |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5874089A (en) * | 1981-10-29 | 1983-05-04 | Ricoh Co Ltd | Control system for semiconductor laser output |
-
1985
- 1985-01-30 JP JP1169685U patent/JPS61127659U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5874089A (en) * | 1981-10-29 | 1983-05-04 | Ricoh Co Ltd | Control system for semiconductor laser output |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63143887A (en) * | 1986-12-08 | 1988-06-16 | Ricoh Co Ltd | Semiconductor laser driving circuit |