Optical: systems and elements – Optical modulator – Light wave directional modulation
Reexamination Certificate
2006-04-17
2010-02-23
Choi, William C (Department: 2873)
Optical: systems and elements
Optical modulator
Light wave directional modulation
C359S202100
Reexamination Certificate
active
07667887
ABSTRACT:
A light scanning device that projects light beams modulated in response to image signals. The light scanning device includes: a light source that emits the light beams; a scanner that scans the light beams from the light source in a first direction and a second direction substantially perpendicular to the first direction; a pixel-timing-signal generating section that generates a pixel timing signal indicative of a timing at which the light beam enters for every pixel region to be formed in response to the image signals; a pulse-signal generating section that generates a pulse signal having a pulse width corresponding to time shorter than the shortest of the time during which the light beam passes through the pixel region on the basis of the pixel timing signal; and a driving-signal generating section that generates a driving signal for driving the light source in accordance with the pulse signal and the image signal.
REFERENCES:
patent: 6731320 (2004-05-01), Allen et al.
patent: A 2001-158127 (2001-06-01), None
patent: A 2003-207730 (2003-07-01), None
Choi William C
Oliff & Berridg,e PLC
Seiko Epson Corporation
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