Vol. 52 No. 1 (2015)   New Products & Technologies
Technical Papers

High-Speed & High-Quality Laser Drilling Technology Using a Prism Rotator

SANEYUKI GOYA
TOSHIYA WATANABE
JUNPEI YAMAGUCHI
TSUGUMARU YAMASHITA
RYU SUZUKI

The laser head for processing or the processing stage in the conventional laser processing method is mechanically rotated for drilling. The processing speed depends upon these structures' acceleration/deceleration, which is limited by their masses and rigidities. Therefore, the laser processing method has so far had limitations in enhancing the processing speed. Since processing speed is limited, mitigation of the laser's thermal influences affecting processing quality has also been limited. In coping with the problems, a laser optical system, with a mass much smaller than that of the laser head or drilling stage was rotated quickly, thereby realizing much faster processing with processing quality maintained equal to or better than that of conventional laser processing.