JPH042325U - - Google Patents

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Publication number
JPH042325U
JPH042325U JP4097490U JP4097490U JPH042325U JP H042325 U JPH042325 U JP H042325U JP 4097490 U JP4097490 U JP 4097490U JP 4097490 U JP4097490 U JP 4097490U JP H042325 U JPH042325 U JP H042325U
Authority
JP
Japan
Prior art keywords
semiconductor laser
optical output
drive circuit
signal reading
laser drive
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
Application number
JP4097490U
Other languages
English (en)
Other versions
JP2515320Y2 (ja
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP4097490U priority Critical patent/JP2515320Y2/ja
Priority to US07/686,783 priority patent/US5127015A/en
Publication of JPH042325U publication Critical patent/JPH042325U/ja
Application granted granted Critical
Publication of JP2515320Y2 publication Critical patent/JP2515320Y2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Optical Head (AREA)

Description

【図面の簡単な説明】
第1図は本考案の一実施例を示す回路図、第2
図は従来例を示す回路図、第3図は半導体レーザ
の光出力波形図である。 1……半導体レーザ、2……フオトダイオード
、3……高周波重畳回路、5……コンパレータ、
6……スイツチング用トランジスタ、3a……増
幅素子、3b……高周波発振器。

Claims (1)

    【実用新案登録請求の範囲】
  1. 半導体レーザを信号読みとり及び信号書き込み
    の光源として使用する半導体レーザ駆動回路にお
    いて、半導体レーザの光出力レベルを検出する手
    段、該光出力の検出レベルに応じ信号読みとり時
    の高周波重畳をスイツチングする手段とを備えて
    なることを特徴とする半導体レーザ駆動回路。
JP4097490U 1990-04-17 1990-04-17 半導体レーザ駆動回路 Expired - Fee Related JP2515320Y2 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP4097490U JP2515320Y2 (ja) 1990-04-17 1990-04-17 半導体レーザ駆動回路
US07/686,783 US5127015A (en) 1990-04-17 1991-04-17 Driving circuit of a semiconductor laser

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4097490U JP2515320Y2 (ja) 1990-04-17 1990-04-17 半導体レーザ駆動回路

Publications (2)

Publication Number Publication Date
JPH042325U true JPH042325U (ja) 1992-01-09
JP2515320Y2 JP2515320Y2 (ja) 1996-10-30

Family

ID=31551240

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4097490U Expired - Fee Related JP2515320Y2 (ja) 1990-04-17 1990-04-17 半導体レーザ駆動回路

Country Status (1)

Country Link
JP (1) JP2515320Y2 (ja)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3115919U (ja) 2005-01-26 2005-11-24 海藍星科技股▲ふん▼有限公司 キセノンランプのローハイビーム切換制御回路

Also Published As

Publication number Publication date
JP2515320Y2 (ja) 1996-10-30

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