US 12,263,534 B2
Laser beam shaping device, laser processing system and laser interlocking welding structure
Yuan-Di Chen, Tainan (TW); Wu-Jung Tsai, Tainan (TW); and Chia-Yu Hu, Tainan (TW)
Assigned to INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, Hsin-Chu (TW)
Filed by Industrial Technology Research Institute, Hsin-Chu (TW)
Filed on Nov. 28, 2020, as Appl. No. 17/106,073.
Claims priority of application No. 109137106 (TW), filed on Oct. 26, 2020.
Prior Publication US 2022/0126397 A1, Apr. 28, 2022
Int. Cl. B23K 26/06 (2014.01); B23K 26/0622 (2014.01); B23K 26/067 (2006.01); B23K 26/32 (2014.01); B23K 26/324 (2014.01); B23K 37/04 (2006.01); C03C 27/02 (2006.01); G02B 3/00 (2006.01); G02B 19/00 (2006.01); G02B 27/09 (2006.01)
CPC B23K 26/0648 (2013.01) [B23K 26/0624 (2015.10); B23K 26/0643 (2013.01); B23K 26/0676 (2013.01); B23K 26/32 (2013.01); B23K 26/324 (2013.01); B23K 37/0435 (2013.01); C03C 27/02 (2013.01); G02B 3/00 (2013.01); G02B 19/0009 (2013.01); G02B 27/0933 (2013.01); G02B 27/0955 (2013.01); G02B 2003/0093 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A laser beam shaping device, applied to process an interface between a first material and a second material, the laser beam shaping device comprising:
a multi-zone structure lens, including a lens body and a refractive structure, the lens body having an incident plane and an emission plane parallel to the incident plane, one of the incident plane and the emission plane being furnished with the refractive structure, the refractive structure having a depth into the lens body along an optical axis of the lens body, the lens body allowing a light source to penetrate through, wherein the light source passing through the refractive structure deviates away from the refractive structure and leaves the lens body via the emission plane, the light source passing through the lens body is divided into 2×(N−1) sets of light beams; and
a focusing lens, used for receiving the 2×(N−1) sets of light beams from the multi-zone structure lens, wherein, after the 2×(N−1) sets of light beams penetrate through the focusing lens respectively, 2×(N−1) set of incident beams are formed to project the interface of the first material and the second material in an oblique inward manner with respect to an optical axis of the focusing lens, and the refractive structure is a concave structure recessed into at least one of the incident plane and the emission plane of the lens body;
wherein the multi-zone structure lens has N−1 refractive structures passing through a center point of the lens body, and the optical axis passes through the center point, where N is greater than or equal to 2; and
wherein, with the N−1 refractive structures, the lens body has 2×(N−1) protruding structures, and each of the protruding structures has an angle of 360°/(2×(N−1)) defined by the neighboring refractive structures.