JPS6145727U - Control circuit for modulated laser light - Google Patents

Control circuit for modulated laser light

Info

Publication number
JPS6145727U
JPS6145727U JP12756584U JP12756584U JPS6145727U JP S6145727 U JPS6145727 U JP S6145727U JP 12756584 U JP12756584 U JP 12756584U JP 12756584 U JP12756584 U JP 12756584U JP S6145727 U JPS6145727 U JP S6145727U
Authority
JP
Japan
Prior art keywords
laser light
output
control circuit
modulated laser
counter
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
JP12756584U
Other languages
Japanese (ja)
Other versions
JPH0548257Y2 (en
Inventor
滋明 和智
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 JP12756584U priority Critical patent/JPS6145727U/en
Publication of JPS6145727U publication Critical patent/JPS6145727U/en
Application granted granted Critical
Publication of JPH0548257Y2 publication Critical patent/JPH0548257Y2/ja
Granted 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) [Summary] 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]

第１図はこの考案の概要を示すブロック図、第２図は第
１図の動作を説明するための波形図、第３図はこの考案
の一実施例を示す回路図である。 図中、１は可変電流源、２は変調器、３は半導体レーザ
光源、３ｐは検出器、４は比較器、５はカウンタ、６は
Ｄ／Ａ変換器、７は［）−ＦＦ、８はリセット回路、９
は記録のための光学系、１０はモード切り換えのスイッ
チを示す。FIG. 1 is a block diagram showing an overview of this invention, FIG. 2 is a waveform diagram for explaining the operation of FIG. 1, and FIG. 3 is a circuit diagram showing one embodiment of this invention. In the figure, 1 is a variable current source, 2 is a modulator, 3 is a semiconductor laser light source, 3p is a detector, 4 is a comparator, 5 is a counter, 6 is a D/A converter, 7 is [)-FF, 8 is a reset circuit, 9
10 indicates an optical system for recording, and 10 indicates a mode changeover switch.

Claims (2)

【実用新案登録請求の範囲】[Scope of utility model registration request] （１）デジタルデータによって変調された半導体レーザ
光源の発光パワーを検出する検出器と、この検出器の出
力と設定電圧を比較する比較器と、前記デジタルデータ
を計数するカウントーと、このカウンタの出力によって
前記半導体レーザ光源に洪給すを電力を制御する可変電
流源を設け、前記検出器の出力が設定電圧と等しくなっ
たとき出力される前記比較の出力をラッチして前記カウ
ンタの計数動作を停止し、所定の発光パワーを設定する
ように構成したことを特・徴とする変調レーザ光のＩＩ
Ｉ御回路。(1) A detector that detects the emission power of the semiconductor laser light source modulated by digital data, a comparator that compares the output of this detector with a set voltage, a counter that counts the digital data, and the output of this counter. A variable current source is provided to control the power supplied to the semiconductor laser light source, and the comparison output, which is output when the output of the detector becomes equal to the set voltage, is latched to control the counting operation of the counter. II of a modulated laser beam characterized by being configured to stop and set a predetermined emission power
I control circuit. （２）デジタルデータがセットパルスのあとに記録デー
タに切り換わることを特徴と子る実用新案登録請求の範
囲第（１）項記載の変調レーザ光の制御回路。(2) A modulated laser light control circuit according to claim (1), characterized in that the digital data is switched to recording data after the set pulse.
JP12756584U 1984-08-24 1984-08-24 Control circuit for modulated laser light Granted JPS6145727U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12756584U JPS6145727U (en) 1984-08-24 1984-08-24 Control circuit for modulated laser light

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12756584U JPS6145727U (en) 1984-08-24 1984-08-24 Control circuit for modulated laser light

Publications (2)

Publication Number Publication Date
JPS6145727U true JPS6145727U (en) 1986-03-26
JPH0548257Y2 JPH0548257Y2 (en) 1993-12-22

Family

ID=30686207

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12756584U Granted JPS6145727U (en) 1984-08-24 1984-08-24 Control circuit for modulated laser light

Country Status (1)

Country Link
JP (1) JPS6145727U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02165424A (en) * 1988-12-16 1990-06-26 Sanyo Electric Co Ltd Control method for laser power and control circuit thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58100245A (en) * 1981-12-11 1983-06-14 Nec Corp Controller for quantity of light of optical recording and reproducing device
JPS58100571A (en) * 1981-12-10 1983-06-15 Konishiroku Photo Ind Co Ltd Laser beam scanning device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58100571A (en) * 1981-12-10 1983-06-15 Konishiroku Photo Ind Co Ltd Laser beam scanning device
JPS58100245A (en) * 1981-12-11 1983-06-14 Nec Corp Controller for quantity of light of optical recording and reproducing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02165424A (en) * 1988-12-16 1990-06-26 Sanyo Electric Co Ltd Control method for laser power and control circuit thereof

Also Published As

Publication number Publication date
JPH0548257Y2 (en) 1993-12-22

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