JPS54157641A - Light modulating circuit - Google Patents

Light modulating circuit

Info

Publication number
JPS54157641A
JPS54157641A JP6580278A JP6580278A JPS54157641A JP S54157641 A JPS54157641 A JP S54157641A JP 6580278 A JP6580278 A JP 6580278A JP 6580278 A JP6580278 A JP 6580278A JP S54157641 A JPS54157641 A JP S54157641A
Authority
JP
Japan
Prior art keywords
input electric
electric signal
modulated
light
pulse
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
JP6580278A
Other languages
Japanese (ja)
Inventor
Koji Suga
Yoshinori Misaki
Fumio Kishino
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Nippon Telegraph and Telephone Corp
Original Assignee
Hitachi Ltd
Nippon Telegraph and Telephone Corp
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 Hitachi Ltd, Nippon Telegraph and Telephone Corp filed Critical Hitachi Ltd
Priority to JP6580278A priority Critical patent/JPS54157641A/en
Publication of JPS54157641A publication Critical patent/JPS54157641A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To improve the faithfulness of modulated outputs by modulating light according to pulse widths together with the pulse amplitudes of modulating input electric signals.
CONSTITUTION: Pulse widths of modulating input electric signal are detected with a pulse width detecting circuit 4. Light source light of a laser light source 1 becomes smaller in attenuation as the pulse width is smaller and it is intensity-modulated according to the pulse amplitudes of the input electric signal in a modualtor 2. Hence, even in the case of the input electric signal of a narrow width, the modulated light intensity does not decrease and th light modulated signal which is faithful to the input electric signal and is capable of performing accurate recording in recording material may be formed.
COPYRIGHT: (C)1979,JPO&Japio
JP6580278A 1978-06-02 1978-06-02 Light modulating circuit Pending JPS54157641A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6580278A JPS54157641A (en) 1978-06-02 1978-06-02 Light modulating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6580278A JPS54157641A (en) 1978-06-02 1978-06-02 Light modulating circuit

Publications (1)

Publication Number Publication Date
JPS54157641A true JPS54157641A (en) 1979-12-12

Family

ID=13297513

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6580278A Pending JPS54157641A (en) 1978-06-02 1978-06-02 Light modulating circuit

Country Status (1)

Country Link
JP (1) JPS54157641A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0321432A (en) * 1989-04-21 1991-01-30 E I Du Pont De Nemours & Co Shaping system for three- dimensional object

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0321432A (en) * 1989-04-21 1991-01-30 E I Du Pont De Nemours & Co Shaping system for three- dimensional object
JPH0661847B2 (en) * 1989-04-21 1994-08-17 帝人製機株式会社 Stereoscopic image forming system

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