LASER DIODE CONTROL UNIT

Title:

LASER DIODE CONTROL UNIT

Document Type and Number:

Japanese Patent JP2003008138

Kind Code:

A

Abstract:

To provide a control circuit which is capable of coping with the individual characteristics of laser diodes and changes in laser diodes over aging.

A laser diode control device which controls the emission output of a laser diode on the basis of temperature data is composed of a drive circuit (12) which is connected to a laser diode to supply a drive current to it, a digital storage means (18) which is capable of previously storing the proper drive currents of the laser diodes under various temperature conditions, and a central processing unit which is connected to the digital storage means and controls the laser diode through the drive circuit (12) on the basis of temperature data and the proper drive current values obtained from the digital storage means.

Inventors:

SAKAMOTO HIROSHI
MASUDA SHINJI
KANESAKA HIROKI
MATSUYAMA SATORU
MIKI MAKOTO

Application Number:

JP2001178809A

Publication Date:

January 10, 2003

Filing Date:

June 13, 2001

Export Citation:

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Assignee:

MOTOROLA INC
FUJITSU LTD

International Classes:

H01S5/0683; H01S5/068; H05B44/00; H01S5/06; H01S5/0687; (IPC1-7): H01S5/0683

Attorney, Agent or Firm:

Shinsuke Onuki (1 person outside)

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