Optical waveguides – Miscellaneous
Reexamination Certificate
2006-07-04
2006-07-04
Healy, Brian (Department: 2883)
Optical waveguides
Miscellaneous
C219S121600, C219S121610, C219S121620
Reexamination Certificate
active
07072566
ABSTRACT:
A laser-working method is disclosed, which includes the steps of splitting a single pulse laser beam having a time width of not more than 500 picoseconds into plural pulse laser beams; subjecting said plural pulse laser beams to time delaying, and adjusting a working surface-irradiating shape, an intensity distribution and a working surface-irradiating position of each of the plural pulse laser beams; working a target object to be irradiated, while the respective working surface-irradiating shapes of said plural laser beams are partially or entirely spatially overlapped with each other or one another; and setting to a time interval of from a pulse width to 1 nanosecond a time period during which each of the pulse laser beams is irradiated.
REFERENCES:
patent: 6864457 (2005-03-01), Alexander et al.
patent: 7002149 (2006-02-01), Shigekawa et al.
patent: 5-57464 (1993-03-01), None
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patent: 2002-324768 (2002-11-01), None
Seo Manabu
Yamada Yasufumi
Blevins Jerry Martin
Healy Brian
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Ricoh & Company, Ltd.
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