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LASER-BEAM DEVICE, LASER-SOLDERING TOOL AND METHOD, FOR LASER-SOLDERING CONNECTION PADS OF A HEAD-STACK ASSEMBLY FOR A HARD-DISK DRIVE
LASER-BEAM DEVICE, LASER-SOLDERING TOOL AND METHOD, FOR LASER-SOLDERING CONNECTION PADS OF A HEAD-STACK ASSEMBLY FOR A HARD-DISK DRIVE
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机译:用于硬磁盘驱动器的头架总成的激光焊接连接板的激光束装置,激光焊接工具和方法
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摘要
A laser-beam device for laser-soldering connection pads of a head-stack assembly (HSA) for a hard-disk drive (HDD). The laser-beam device includes a laser configured to provide a first beam of light, a rectangular flat-top beam-shaping (RFTBS) optic, and a focusing lens. The RFTBS optic is configured to shape the first beam of light into a second beam having a rectangular shape, and a substantially flat-top intensity profile in a far-field region. The focusing lens is configured to transform the second beam into a third beam aligned with connection pads of the HSA. The third beam of light has a substantially flat-top intensity profile and a rectangular beam shape matched to cover the connection pads, and is configured to generate heat about uniformly to reflow solder of the connection pads. A laser-soldering tool and a method, for laser-soldering connection pads of the HSA are also provided.
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