JPS58140652U - Semiconductor laser oscillator protection device - Google Patents

Semiconductor laser oscillator protection device

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Publication number
JPS58140652U
JPS58140652U JP3621482U JP3621482U JPS58140652U JP S58140652 U JPS58140652 U JP S58140652U JP 3621482 U JP3621482 U JP 3621482U JP 3621482 U JP3621482 U JP 3621482U JP S58140652 U JPS58140652 U JP S58140652U
Authority
JP
Japan
Prior art keywords
laser oscillator
semiconductor laser
protection device
comparator
photodetector
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
JP3621482U
Other languages
Japanese (ja)
Inventor
雅史 横田
Original Assignee
株式会社東芝
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 株式会社東芝 filed Critical 株式会社東芝
Priority to JP3621482U priority Critical patent/JPS58140652U/en
Publication of JPS58140652U publication Critical patent/JPS58140652U/en
Pending legal-status Critical Current

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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]

図面はこの考案の一実施例を示すもので、第１図は全体
的な構成図、第２図は動作を説明するための要部信号波
形図である。 ４・・・半導体レーザ発振器、１１・・・光検出器、１
２・・・増幅器、１３・・・誤差増幅器、１４・・・比
較器、　−１５・・・駆動回路。The drawings show one embodiment of this invention, and FIG. 1 is an overall configuration diagram, and FIG. 2 is a main part signal waveform diagram for explaining the operation. 4... Semiconductor laser oscillator, 11... Photodetector, 1
2...Amplifier, 13...Error amplifier, 14...Comparator, -15...Drive circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 半導体レーザ発振器からの発振光を検出しそれを電気信
号に変換する光検出器と、この光検出器の出力とあらか
じめ設定される設定値とを比較し光検出器の出力が設定
値よりも大きいとき異常信号を出力する比較器と、この
比較器から出力される異常信号により前記半導体レーザ
発振器の発振動作を停止せしめる手段とを具備したこと
を特徴とする半動体レーザ発振器の保護装置。A photodetector detects the oscillation light from the semiconductor laser oscillator and converts it into an electrical signal, and the output of this photodetector is compared with a preset value, and the output of the photodetector is greater than the set value. 1. A protection device for a semi-moving laser oscillator, comprising: a comparator that outputs an abnormal signal when the comparator outputs an abnormal signal; and means for stopping the oscillation operation of the semiconductor laser oscillator based on the abnormal signal output from the comparator.
JP3621482U 1982-03-15 1982-03-15 Semiconductor laser oscillator protection device Pending JPS58140652U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3621482U JPS58140652U (en) 1982-03-15 1982-03-15 Semiconductor laser oscillator protection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3621482U JPS58140652U (en) 1982-03-15 1982-03-15 Semiconductor laser oscillator protection device

Publications (1)

Publication Number Publication Date
JPS58140652U true JPS58140652U (en) 1983-09-21

Family

ID=30047659

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3621482U Pending JPS58140652U (en) 1982-03-15 1982-03-15 Semiconductor laser oscillator protection device

Country Status (1)

Country Link
JP (1) JPS58140652U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60170738A (en) * 1984-02-16 1985-09-04 Matsushita Electric Ind Co Ltd Monitoring device for abnormality of light source

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60170738A (en) * 1984-02-16 1985-09-04 Matsushita Electric Ind Co Ltd Monitoring device for abnormality of light source

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