Laser beam size control mechanism and laser repair apparatus using the same

摘要

The present invention relates to a laser beam size adjusting instrument and a laser repair device using the same. The laser beam size adjusting instrument includes: a case (131) in which light transmitting holes (LH) for a laser beam (L) to pass through are formed at the top and the bottom; a first slit moving unit (132) which is installed in a first direction (X) inside the case (131); a second slit moving unit (133) which is installed in a second direction (Y) perpendicular to the first direction (X) inside the case (131); and multiple slit plates (134, 145, 136, 137) which are respectively installed in the first slit moving unit (132)and in the second slit moving unit (133)and adjust the width (B1, B2) of the laser beam (L) passing through the light transmitting holes (LH) in the first direction (X) and the second direction (Y). The multiple slit plates (134, 145, 136, 137) are placed with at least one height adjusting block (138) in the first slit moving unit (132) and the second slit moving unit (133) and are moved at different heights. Therefore, the multiple slit plates are prevented from colliding to each other when the slit plates are cross-moved, thereby enhancing the operation reliability.