JPS5356985A - Light emitting element driving circuit - Google Patents

Light emitting element driving circuit

Info

Publication number
JPS5356985A
JPS5356985A JP13205976A JP13205976A JPS5356985A JP S5356985 A JPS5356985 A JP S5356985A JP 13205976 A JP13205976 A JP 13205976A JP 13205976 A JP13205976 A JP 13205976A JP S5356985 A JPS5356985 A JP S5356985A
Authority
JP
Japan
Prior art keywords
light emitting
emitting element
driving circuit
element driving
current
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
JP13205976A
Other languages
Japanese (ja)
Other versions
JPS5731666B2 (en
Inventor
Mitsuhiro Motegi
Takashi Toge
Kimiyoshi Ishii
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP13205976A priority Critical patent/JPS5356985A/en
Publication of JPS5356985A publication Critical patent/JPS5356985A/en
Publication of JPS5731666B2 publication Critical patent/JPS5731666B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/04—Processes or apparatus for excitation, e.g. pumping, e.g. by electron beams
    • H01S5/042—Electrical excitation ; Circuits therefor

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Optics & Photonics (AREA)
  • Optical Communication System (AREA)
  • Semiconductor Lasers (AREA)
  • Led Devices (AREA)

Abstract

PURPOSE:To reduce power consumption by constituting the driving circuit of a light emitting element with a current selection switch type so that current is flown to the circuit only when a clock signal is at a high level but not when it is at a low level.
JP13205976A 1976-11-02 1976-11-02 Light emitting element driving circuit Granted JPS5356985A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13205976A JPS5356985A (en) 1976-11-02 1976-11-02 Light emitting element driving circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13205976A JPS5356985A (en) 1976-11-02 1976-11-02 Light emitting element driving circuit

Publications (2)

Publication Number Publication Date
JPS5356985A true JPS5356985A (en) 1978-05-23
JPS5731666B2 JPS5731666B2 (en) 1982-07-06

Family

ID=15072542

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13205976A Granted JPS5356985A (en) 1976-11-02 1976-11-02 Light emitting element driving circuit

Country Status (1)

Country Link
JP (1) JPS5356985A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5681990A (en) * 1979-12-06 1981-07-04 Canon Inc Edge intensifying device
JPS57210682A (en) * 1981-06-20 1982-12-24 Fujitsu Ltd Semiconductor laser modulating circuit
JPS5961193A (en) * 1982-09-30 1984-04-07 Fujitsu Ltd Drive circuit for laser diode
JPS59140647A (en) * 1983-01-31 1984-08-13 Canon Inc Optical information recording and reproducing device
JPH0345674U (en) * 1990-09-05 1991-04-26

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0441965A4 (en) * 1989-06-24 1993-04-28 Mitsubishi Rayon Co., Ltd. Light-emitting diode drive circuit

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4835792A (en) * 1971-09-10 1973-05-26
JPS4966293A (en) * 1972-10-31 1974-06-27
JPS5087789A (en) * 1973-12-07 1975-07-15

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4835792A (en) * 1971-09-10 1973-05-26
JPS4966293A (en) * 1972-10-31 1974-06-27
JPS5087789A (en) * 1973-12-07 1975-07-15

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5681990A (en) * 1979-12-06 1981-07-04 Canon Inc Edge intensifying device
JPS6359276B2 (en) * 1979-12-06 1988-11-18
JPS57210682A (en) * 1981-06-20 1982-12-24 Fujitsu Ltd Semiconductor laser modulating circuit
JPH04396B2 (en) * 1981-06-20 1992-01-07 Fujitsu Ltd
JPS5961193A (en) * 1982-09-30 1984-04-07 Fujitsu Ltd Drive circuit for laser diode
JPS59140647A (en) * 1983-01-31 1984-08-13 Canon Inc Optical information recording and reproducing device
JPH0345674U (en) * 1990-09-05 1991-04-26
JPH0525262Y2 (en) * 1990-09-05 1993-06-25

Also Published As

Publication number Publication date
JPS5731666B2 (en) 1982-07-06

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