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. 22, 2015
Filed:
Jun. 06, 2014
Western Digital (Fremont), Llc, Fremont, CA (US);
Matthew R. Gibbons, San Jose, CA (US);
Hongxing Yuan, San Ramon, CA (US);
Brad V. Johnson, Santa Clara, CA (US);
Michael V. Morelli, San Jose, CA (US);
Lisha Wang, Fremont, CA (US);
Zhigang Bai, Fremont, CA (US);
Ge Yi, San Ramon, CA (US);
Yunfei Li, Fremont, CA (US);
Samuel W. Yuan, Saratoga, CA (US);
Western Digital (Fremont), LLC, Fremont, CA (US);
Abstract
A heat assisted magnetic recording (HAMR) write transducer has an air-bearing surface (ABS) configured to reside in proximity to a media during use and is coupled with a laser that provides energy. The HAMR transducer includes a main pole, at least one additional pole adjacent to the main pole in a down track direction, a waveguide and at least one coil for energizing the main pole. The main pole is configured to write to a region of the media and is recessed from the ABS by a first distance. The additional pole(s) are recessed from the ABS by a second distance greater than the first distance. The waveguide is optically coupled with the laser and directs a portion of the energy toward the ABS at an acute angle from the ABS. A portion of the waveguide resides between the additional pole(s) and the ABS.