Laser beam machining method and apparatus
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United States of America Patent
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Nov 30, 2004
Grant Date -
Nov 28, 2002
app pub date -
May 10, 2002
filing date -
May 15, 2001
priority date (Note) -
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Abstract
Disclosed is a laser beam machining method and apparatus for irradiating a work with a laser beam, to melt-evaporate the irradiated region of the work at the irradiation spot. According to the invention, a work such as an optical fiber can be machined into a complicated form within a short period of time without accurately controlling the laser beam irradiation position while inhibiting the decline of machining accuracy due to thermal effect, by using a mask having a light-transmitting section that is predetermined times as large as the laser beam machining spot corresponding to the form of the portion undergoing melt-evaporation of the work.
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