Laser array circuit

Details Laser array circuit Laser array circuit

2008-12-18

2010-10-05

Rodriguez, Armando (Department: 2828)

Coherent light generators

Particular component circuitry

For driving or controlling laser

C372S038070, C372S050120

Reexamination Certificate

active

07809037

ABSTRACT:
A laser array circuit decreases the size of a circuit pattern. A laser-diode (LD) driving switching element with a low on resistance is used in common with and switches conduction and non-conduction of a large current to each of a plurality of charge capacitors and charge switching elements that accumulate charge in the charge capacitors in respective drive circuits. An LD array and the LD driving switching element are closely located on a light-emitting board. By laying out the LD array and charge capacitors considering only the positional relationship therebetween, the size of a circuit pattern including LDs and the charge capacitors can be decreased.

REFERENCES:
patent: 5191589 (1993-03-01), Amano et al.
patent: 6771679 (2004-08-01), Schie
patent: 6798797 (2004-09-01), Mangano et al.
patent: 0665446 (1994-11-01), None
patent: U-62-034454 (1987-02-01), None
patent: A-1-152683 (1989-06-01), None
patent: A-2001-053223 (2001-02-01), None
Office Action mailed Dec. 1, 2009 from the Japan Patent Office for corresponding patent application No. 2008-242560 (English translation enclosed).

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