The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 02, 2025
Filed:
Aug. 16, 2024
Sae Magnetics (H.k.) Ltd., Hong Kong, CN;
Seiichi Takayama, Hong Kong, CN;
Ryuji Fujii, Hong Kong, CN;
Tai Boon Lee, Hong Kong, CN;
Ka Yip Wong, Hong Kong, CN;
SAE MAGNETICS (H.K.) LTD., Hong Kong, CN;
Abstract
The disclosure disclose a light source unit applied to the thermally assisted magnetic head. A welding layer and a stopping structure are disposed between the slider of the thermally assisted magnetic head and the light source unit. When the light source unit is joined with the slider, the light source unit moves as the welding layer melts and can be precisely limited at the preset position by the stopping structure. In this way, the emission opening of the light source unit and the waveguide can be aligned precisely, thereby increasing the optical coupling efficiency between the light source unit and the waveguide. Meanwhile, the embodiment of the disclosure further accordingly provides a thermally assisted magnetic head, a head gimbal assembly, and a hard disk drive.