Nothing Special   »   [go: up one dir, main page]

JPS53105992A - Stabilizing circuit for lumious element output - Google Patents

Stabilizing circuit for lumious element output

Info

Publication number
JPS53105992A
JPS53105992A JP2021877A JP2021877A JPS53105992A JP S53105992 A JPS53105992 A JP S53105992A JP 2021877 A JP2021877 A JP 2021877A JP 2021877 A JP2021877 A JP 2021877A JP S53105992 A JPS53105992 A JP S53105992A
Authority
JP
Japan
Prior art keywords
lumious
stabilizing circuit
element output
output
detection
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
JP2021877A
Other languages
Japanese (ja)
Other versions
JPS6047782B2 (en
Inventor
Masahiro Furuya
Junichi Nakagawa
Kohei Ishizuka
Yasuhiro Kita
Yoshitaka Takasaki
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
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP52020218A priority Critical patent/JPS6047782B2/en
Publication of JPS53105992A publication Critical patent/JPS53105992A/en
Publication of JPS6047782B2 publication Critical patent/JPS6047782B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/50—Transmitters

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Semiconductor Lasers (AREA)
  • Led Devices (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To keep the peak value of the output light at a constant level, by comparing the detection signal obtained through detection of the monitor light corresponding to the output of the luminous element with the reference signal wquivalent to the laser driving waveform and then feeding back the error signal between the above two signals to the element driving circuit.
JP52020218A 1977-02-28 1977-02-28 Light emitting element output stabilization circuit Expired JPS6047782B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52020218A JPS6047782B2 (en) 1977-02-28 1977-02-28 Light emitting element output stabilization circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52020218A JPS6047782B2 (en) 1977-02-28 1977-02-28 Light emitting element output stabilization circuit

Publications (2)

Publication Number Publication Date
JPS53105992A true JPS53105992A (en) 1978-09-14
JPS6047782B2 JPS6047782B2 (en) 1985-10-23

Family

ID=12021012

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52020218A Expired JPS6047782B2 (en) 1977-02-28 1977-02-28 Light emitting element output stabilization circuit

Country Status (1)

Country Link
JP (1) JPS6047782B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0086183A2 (en) * 1982-02-09 1983-08-17 Telefonaktiebolaget L M Ericsson Electronic external line repeater
JPS5928396A (en) * 1982-08-10 1984-02-15 Nec Corp Semiconductor laser drive device
JPS5977729A (en) * 1983-09-26 1984-05-04 Hitachi Ltd Optical communication device
JPS61234578A (en) * 1985-04-11 1986-10-18 Matsushita Electric Ind Co Ltd Current driving circuit
JPH07264143A (en) * 1994-02-09 1995-10-13 Hughes Aircraft Co Optically and electrically controlled rf matching circuit

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0312791Y2 (en) * 1985-04-18 1991-03-26

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5221704A (en) * 1975-08-12 1977-02-18 Nec Corp Photo transmitter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5221704A (en) * 1975-08-12 1977-02-18 Nec Corp Photo transmitter

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0086183A2 (en) * 1982-02-09 1983-08-17 Telefonaktiebolaget L M Ericsson Electronic external line repeater
JPS5928396A (en) * 1982-08-10 1984-02-15 Nec Corp Semiconductor laser drive device
JPS5977729A (en) * 1983-09-26 1984-05-04 Hitachi Ltd Optical communication device
JPS61234578A (en) * 1985-04-11 1986-10-18 Matsushita Electric Ind Co Ltd Current driving circuit
JPH07264143A (en) * 1994-02-09 1995-10-13 Hughes Aircraft Co Optically and electrically controlled rf matching circuit

Also Published As

Publication number Publication date
JPS6047782B2 (en) 1985-10-23

Similar Documents

Publication Publication Date Title
JPS52143790A (en) Driving system of light emitting elements
JPS53105992A (en) Stabilizing circuit for lumious element output
JPS5355053A (en) Photoelectric encoder
JPS5412579A (en) Light output stabilizing method
JPS5375704A (en) Light communication unit
JPS5390801A (en) Semiconductor laser switching system
JPS5343579A (en) Multiwave length light detector
JPS52104248A (en) Abnormality detection device of laser beam
JPS5382152A (en) Sampling circuit
JPS5299873A (en) Photoelectric smoke sensor
JPS543582A (en) Double modulating photometric device
JPS546750A (en) Transistor amplifying device
JPS5375897A (en) Pulse laser output stabilization circuit
JPS5317330A (en) Display means for focusing condition
JPS5441650A (en) Level comparison circuit
JPS5443033A (en) Paper detecting method
JPS52108881A (en) Sample detector
JPS5419110A (en) Control circuit for small step motor
JPS5364084A (en) System spectometer
JPS53122331A (en) Synchronous control system for scanned light beam
JPS5315182A (en) Light detecting circuit
JPS5355993A (en) Driving system for luminous element
JPS5310927A (en) Bias light stabilizing circuit for pickup tube
JPS5263695A (en) Doppler sensor
JPS522387A (en) Light signal generating (or emitting) device