Coherent light generators – Particular component circuitry – For driving or controlling laser
Reexamination Certificate
2006-02-02
2008-09-16
Nguyen, Dung T (Department: 2828)
Coherent light generators
Particular component circuitry
For driving or controlling laser
C372S038100, C372S038040, C372S038070
Reexamination Certificate
active
07426226
ABSTRACT:
A circuit for driving a semiconductor laser including a semiconductor integrated circuit, which controls the drive of the semiconductor laser, and is connected to one end of the semiconductor laser. Moreover, the driving circuit incorporates a first power source +Vcc that supplies by way of the semiconductor integrated circuit a drive voltage to one end of the semiconductor laser and a second power source −Vcc, which is connected to the other end of the semiconductor laser and supplies a drive voltage to the other end. Furthermore, the drive circuit incorporates a voltage clamp circuit, connected to a connection terminal connecting the semiconductor laser and the semiconductor integrated circuit, for adjusting the electric potential of the connection terminal.
REFERENCES:
patent: 6236579 (2001-05-01), Watanabe et al.
patent: 2003/0011865 (2003-01-01), Kimura
patent: 2000-284898 (2000-10-01), None
patent: 2000-284998 (2000-10-01), None
patent: 2002-269792 (2002-09-01), None
patent: 2003-29217 (2003-01-01), None
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Nguyen Dung T
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