JPH0320459U - - Google Patents

Info

Publication number
JPH0320459U
JPH0320459U JP7442690U JP7442690U JPH0320459U JP H0320459 U JPH0320459 U JP H0320459U JP 7442690 U JP7442690 U JP 7442690U JP 7442690 U JP7442690 U JP 7442690U JP H0320459 U JPH0320459 U JP H0320459U
Authority
JP
Japan
Prior art keywords
modulation
signal
semiconductor laser
voltage
suppressing
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
Application number
JP7442690U
Other languages
English (en)
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 JP7442690U priority Critical patent/JPH0320459U/ja
Publication of JPH0320459U publication Critical patent/JPH0320459U/ja
Pending legal-status Critical Current

Links

Description

【図面の簡単な説明】
第1図は従来のAPC方式の半導体レーザ駆動
回路のブロツク図、第2図は本考案のAPC方式
の半導体レーザ駆動回路の構成を示すブロツク図
、第3図は第2図における抑止部の具体的回路例
を示す等価回路図である。 1……駆動部、2……変調部、3……検出部、
4……比較部、5……半導体レーザ素子、6と6
および6は抑止部である。

Claims (1)

    【実用新案登録請求の範囲】
  1. 半導体レーザ素子に直流バイアス電流を送出す
    る駆動手段、該半導体レーザ素子の後方出力光を
    検出して検出電圧を送出する検出手段、変調入力
    信号に従い前記直流バイアス電流に重畳する変調
    信号を送出する変調手段、該検出手段による検出
    電圧と該変調手段による変調信号電圧を比較して
    その差出力電圧を制御信号として該駆動手段に送
    出する比較手段、および、上記諸手段への電源投
    入時において前記変調信号および制御信号を予め
    設定した一定時間個別に抑止して前記直流バイア
    ス電流を最低設定値に抑制する第1および第2の
    抑止手段を有することを特徴とする半導体レーザ
    駆動回路。
JP7442690U 1990-07-12 1990-07-12 Pending JPH0320459U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7442690U JPH0320459U (ja) 1990-07-12 1990-07-12

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7442690U JPH0320459U (ja) 1990-07-12 1990-07-12

Publications (1)

Publication Number Publication Date
JPH0320459U true JPH0320459U (ja) 1991-02-28

Family

ID=31614107

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7442690U Pending JPH0320459U (ja) 1990-07-12 1990-07-12

Country Status (1)

Country Link
JP (1) JPH0320459U (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008296936A (ja) * 2007-05-30 2008-12-11 Yoshino Kogyosho Co Ltd 液体揮散容器

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5343487A (en) * 1976-10-01 1978-04-19 Fujitsu Ltd Semiconductor laser output control circuit
JPS54113291A (en) * 1978-01-20 1979-09-04 Thomson Csf Power supply for semiconductor light source

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5343487A (en) * 1976-10-01 1978-04-19 Fujitsu Ltd Semiconductor laser output control circuit
JPS54113291A (en) * 1978-01-20 1979-09-04 Thomson Csf Power supply for semiconductor light source

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008296936A (ja) * 2007-05-30 2008-12-11 Yoshino Kogyosho Co Ltd 液体揮散容器

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