{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9804389","patent":{"patent_number":"US-9804389","title":"Apparatus for eye tracking","assignee":null,"inventors":[],"filing_date":"2016-09-23T00:00:00.000Z","publication_date":"2017-10-31T00:00:00.000Z","cpc_codes":["A61B","G02F","G02F","G02F","H04N","G02F","G02F","G02F","G02F","G02F","G02F","G02F","G02F","G02F","G02F","G06V"],"num_claims":20,"abstract":"An eye tracker having a waveguide for propagating illumination light towards an eye and propagating image light reflected from at least one surface of an eye, a light source optically coupled to the waveguide, and a detector optically coupled to the waveguide. Disposed in the waveguide is at least one grating lamina for deflecting the illumination light towards the eye along a first waveguide path and deflecting the image light towards the detector along a second waveguide path."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Apparatus for eye tracking","description":"An eye tracker having a waveguide for propagating illumination light towards an eye and propagating image light reflected from at least one surface of an eye, a light source optically coupled to the w","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9804389","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-9804389","citation_suggestion":"Patentable. \"Apparatus for eye tracking\" (US-9804389). https://patentable.app/patents/US-9804389","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9804389","json":"https://patentable.app/api/llm-context/US-9804389","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T06:40:27.973Z"}