JPS6035563U - Semiconductor laser drive circuit - Google Patents

Semiconductor laser drive circuit

Info

Publication number
JPS6035563U
JPS6035563U JP12808083U JP12808083U JPS6035563U JP S6035563 U JPS6035563 U JP S6035563U JP 12808083 U JP12808083 U JP 12808083U JP 12808083 U JP12808083 U JP 12808083U JP S6035563 U JPS6035563 U JP S6035563U
Authority
JP
Japan
Prior art keywords
semiconductor laser
circuit
drive circuit
laser drive
detects
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
JP12808083U
Other languages
Japanese (ja)
Inventor
賢 手塚
清 高橋
Original Assignee
ソニー株式会社
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 by ソニー株式会社 filed Critical ソニー株式会社
Priority to JP12808083U priority Critical patent/JPS6035563U/en
Publication of JPS6035563U publication Critical patent/JPS6035563U/en
Pending legal-status Critical Current

Links

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

図はこの考案の一実施例を示す接続図である。 ４・・・半導体レーザー、５・・・モニターダイオード
、１２・・・ツェナーダイオード、１４・・・電源ライ
ン、２８・・・演算増幅器、３４・・・コンパレータ。The figure is a connection diagram showing one embodiment of this invention. 4... Semiconductor laser, 5... Monitor diode, 12... Zener diode, 14... Power supply line, 28... Operational amplifier, 34... Comparator.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 半導体レーザーから出射する光の一部を受光素子により
検出し、この検出信号により上記半導体レーザーのドラ
イブ回路を制御し、上記半導体レーザーの出力パワーを
一定とする自動パワー制御回路と、上記ドライブ電流の
値を検出する検出回路と、この検出回路の出力電圧と基
準電圧とを比較するレベル比較回路と、このレベル比較
回路により制御され、上記半導体レーザーの回路に対す
る電源をオフするスイッチング素子とを備えた、半導体
レーザーのドライブ回路。an automatic power control circuit that detects a part of the light emitted from the semiconductor laser by a light receiving element and controls a drive circuit of the semiconductor laser using the detection signal to keep the output power of the semiconductor laser constant; A detection circuit that detects the value, a level comparison circuit that compares the output voltage of the detection circuit with a reference voltage, and a switching element that is controlled by the level comparison circuit and turns off the power to the semiconductor laser circuit. , semiconductor laser drive circuit.
JP12808083U 1983-08-19 1983-08-19 Semiconductor laser drive circuit Pending JPS6035563U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12808083U JPS6035563U (en) 1983-08-19 1983-08-19 Semiconductor laser drive circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12808083U JPS6035563U (en) 1983-08-19 1983-08-19 Semiconductor laser drive circuit

Publications (1)

Publication Number Publication Date
JPS6035563U true JPS6035563U (en) 1985-03-11

Family

ID=30290674

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12808083U Pending JPS6035563U (en) 1983-08-19 1983-08-19 Semiconductor laser drive circuit

Country Status (1)

Country Link
JP (1) JPS6035563U (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS543661U (en) * 1977-06-10 1979-01-11
JPS5623904U (en) * 1979-07-31 1981-03-04

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS543661U (en) * 1977-06-10 1979-01-11
JPS5623904U (en) * 1979-07-31 1981-03-04

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