{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9666218","patent":{"patent_number":"US-9666218","title":"Thermal assisted magnetic head provided with light detector that detects reflected light","assignee":null,"inventors":[],"filing_date":"2016-07-28T00:00:00.000Z","publication_date":"2017-05-30T00:00:00.000Z","cpc_codes":["G11B","G11B","G11B","G11B","G11B"],"num_claims":21,"abstract":"A thermal assisted magnetic recording head has a magnetic head slider and a light source unit that is fixed to the magnetic head slider. A first surface of the light source unit and a second surface of the magnetic head slider face each other via a gap. The light source unit includes a light source that emits laser light from an emission part that is positioned on the first surface and a photodetector that detects the laser light. The magnetic head slider includes a waveguide through which the laser light that is incident on an incident part positioned on the second surface propagates, near-field light generation means for generating near-field light on an air bearing surface, the near-field light being generated from the laser light that propagates through the waveguide, and a recording magnetic pole that is provided adjacent to the near-field light generation means and that has an end part positioned on the air bearing surface. A medium for propagating the laser light is continuously formed along a path that includes the gap and that extends from the emission part to a light receiving surface of the photodetector."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Thermal assisted magnetic head provided with light detector that detects reflected light","description":"A thermal assisted magnetic recording head has a magnetic head slider and a light source unit that is fixed to the magnetic head slider. A first surface of the light source unit and a second surface o","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9666218","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-9666218","citation_suggestion":"Patentable. \"Thermal assisted magnetic head provided with light detector that detects reflected light\" (US-9666218). https://patentable.app/patents/US-9666218","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9666218","json":"https://patentable.app/api/llm-context/US-9666218","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T05:50:34.206Z"}