JPS5596921A - Drive circuit for ultrasonic light modulator - Google Patents

Drive circuit for ultrasonic light modulator

Info

Publication number
JPS5596921A
JPS5596921A JP513879A JP513879A JPS5596921A JP S5596921 A JPS5596921 A JP S5596921A JP 513879 A JP513879 A JP 513879A JP 513879 A JP513879 A JP 513879A JP S5596921 A JPS5596921 A JP S5596921A
Authority
JP
Japan
Prior art keywords
multiple frequency
light modulator
frequency driving
ultrasonic
intermission
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
JP513879A
Other languages
Japanese (ja)
Inventor
Yoshihiro Uda
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP513879A priority Critical patent/JPS5596921A/en
Publication of JPS5596921A publication Critical patent/JPS5596921A/en
Pending legal-status Critical Current

Links

Landscapes

  • Dot-Matrix Printers And Others (AREA)
  • Laser Beam Printer (AREA)

Abstract

PURPOSE: To compensate the decrease in the diffraction efficiency at the multiple frequency driving by subjecting the ultrasonic light modulator to multiple frequency driving according to the combination of the control signals which perform intermission of individual diffracted beams.
CONSTITUTION: High frequency switches 3, 4 are controlled by the control inputs from terminals 11, 12 and ultrasonic waves of different frequencies are mixed through a high frequency mixer 5, by which an ultrasonic light modulator 100 is subjected to multiple frequency driving, then the diffracted laser light fluxes of different angles of deflections are generated. The output of an AND circuit 8 changes to high and low levels according to the states of the control inputs which change with the high and low levels of the terminals 11, 12 which perform the intermission of these respective diffracted beams, by which the amplification factor of an amplification factor variable aplifier 6 is controlled, thus the decrease in the diffraction efficiency of the modulator 100 owing to the interference at the similtaneous application of the multiple frequency driving signals is compensated.
COPYRIGHT: (C)1980,JPO&Japio
JP513879A 1979-01-19 1979-01-19 Drive circuit for ultrasonic light modulator Pending JPS5596921A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP513879A JPS5596921A (en) 1979-01-19 1979-01-19 Drive circuit for ultrasonic light modulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP513879A JPS5596921A (en) 1979-01-19 1979-01-19 Drive circuit for ultrasonic light modulator

Publications (1)

Publication Number Publication Date
JPS5596921A true JPS5596921A (en) 1980-07-23

Family

ID=11602942

Family Applications (1)

Application Number Title Priority Date Filing Date
JP513879A Pending JPS5596921A (en) 1979-01-19 1979-01-19 Drive circuit for ultrasonic light modulator

Country Status (1)

Country Link
JP (1) JPS5596921A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03132718A (en) * 1989-10-19 1991-06-06 Fuji Photo Film Co Ltd Simultaneous multi-beam optical modulator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03132718A (en) * 1989-10-19 1991-06-06 Fuji Photo Film Co Ltd Simultaneous multi-beam optical modulator

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