TH56264B - Laser method - Google Patents

Abstract

DC60 to provide a laser method that can cut surface-treated plane objects. Uneven as the entrance surface for highly precise laser processing. This laser method irradiates a plane object that has been treated with a laser beam while Place the light convergence points within the subject. To form the modified areas 71 to 77 into the starting area For line-to-cut 5, the entrance surface r For the laser beam in the object is an uneven surface, the line to cut 5 extends through the low surface surface r2 and the protruding surface r1 in the entrance surface r the bending area. Variable 71 is formed inside with a predetermined distance from the low surface surface r2 at the time of laser irradiation along section 51a. On the r1 protrusion surface, the optical convergence point is arranged on Outside the object, the modified region 72 is molded inside with a predetermined distance from the protruding surface surface r1 at the time of laser irradiation along section 51b on the low surface surface r2. will Is arranged on the outside of the object To provide a laser processing method capable of cutting surface-treated plane objects. Uneven as the entrance surface for highly precise laser processing. This laser method irradiates a plane object that has been treated with a laser beam while Place the light convergence points within the subject. To form the modified areas 71 to 77 into the starting area For line-to-cut 5, the entrance surface r For the laser beam in the object is an uneven surface, the line to cut 5 extends through the low surface surface r2 and the protruding surface r1 in the entrance surface r the bending area. Variable 71 is formed inside with a predetermined distance from the low surface surface r2 at the time of laser irradiation along section 51a on the protruding area surface r1. The optical convergence point is arranged. On the outside, the object, the modified region 72, is molded on the inside with a predetermined distance from the protruding surface surface r1 at the time of laser irradiation along section 51b on the low surface surface r2 convergence point. Will light Is arranged on the outside of the object

Claims (3)

Disclaimers (all) that will not appear on the advertisement page: 1. Laser method to irradiate a plane object that has been processed by laser light. Process, while placing the light convergence points within the object in order to form the modified area into the dot zone. Start for cutting inside objects along the line to cut objects; Method which consists of When the entrance surface of the laser beam is processed in the object is an uneven surface while the cut line extends through the low surface and the overhang surface in the entrance surface: the first step of forming the modified area. One inside with a preset distance From the low-space surface along the line to cut; And the second step of forming the second inner modification zone with a preset distance. From the surface, the area overhangs along the line to cut; Where in the first step Light convergence points are also placed outside the object at the time of irradiation. The laser is processed along the upper portion of the surface, the protruding area in the line to cut; And where in the second step Light convergence points are also placed outside the object at the time of irradiation. The laser light is processed along a section on a low surface area in a line to cut. 2. Laser method according to claim 1, where in the first step Will change the conditions In order to place the laser light convergence points inside. A predetermined distance from the low surface area at the time of laser irradiation treatment to Along the part on the surface, the area of the line to cut And will be fixed at the time of laser irradiation Processed along the part on the surface, the protruding area in the line to cut; And where in the second step Will change the irradiation conditions of the laser treatment in order to Place the light convergence point of the processed laser light inside at a predetermined distance from the surface. The protruding area at the time of laser irradiation is processed along the part of the overhanged surface in the line to cut And is fixed at the time of laser irradiation, the process along the lower part of the surface in the line to cut 3. Laser method according to claim 1, where after forming the first and second modification regions Objects will be cut along the line to cut.