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:
May. 12, 2020
Filed:
Mar. 27, 2019
Sae Magnetics (H.k.) Ltd., Hong Kong, HK;
Ryo Hosoi, Hong Kong, HK;
Seiichi Takayama, Hong Kong, HK;
SAE MAGNETICS (H.K.) LTD., Hong Kong, HK;
Abstract
A thermally assisted magnetic head including a slider and a light source-unit. The slider includes a slider substrate and a magnetic head part. The light source-unit includes a laser diode and a sub-mount. The magnetic head part includes a medium-opposing surface, a light source-opposing surface and a waveguide which guides laser light from the light source-opposing surface to the medium-opposing surface. The thermally assisted magnetic head includes an optimal-structure which the following optimizing conditional expression, concerning an inlet-optical path length Lof an inlet-interval of the waveguide, and an outlet-optical path length Lof an outlet-interval, is satisfied,1=2 (isnatural number).