{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9737209","patent":{"patent_number":"US-9737209","title":"Eye tracking and gaze fixation detection systems, components and methods using polarized light","assignee":null,"inventors":[],"filing_date":"2014-05-15T00:00:00.000Z","publication_date":"2017-08-22T00:00:00.000Z","cpc_codes":["A61B","A61B","A61B","A61B","G01N","G01N","G02F","G06F","G06V"],"num_claims":28,"abstract":"An eye tracking and gaze fixation detection system, includes an electronically scannable optical illumination system emits polarized near-infrared (NIR) light to a retina in an eye of a subject; an optical detection system arranged in an optical path of the NIR light after being reflected from the retina of the eye of the subject, the optical detection system providing a detection signal; and a signal processing system communicates with the optical detection system to receive the detection signal, wherein the optical illumination system emits the polarized NIR light to illuminate at least a portion of a scanning path, wherein the scanning path is a spatially closed loop across a portion of the retina in the eye of the subject that repeats periodically over time, and wherein the signal processing system is configured to determine at least one of a gaze direction and a gaze fixation based on the detection signal."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Eye tracking and gaze fixation detection systems, components and methods using polarized light","description":"An eye tracking and gaze fixation detection system, includes an electronically scannable optical illumination system emits polarized near-infrared (NIR) light to a retina in an eye of a subject; an op","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9737209","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-9737209","citation_suggestion":"Patentable. \"Eye tracking and gaze fixation detection systems, components and methods using polarized light\" (US-9737209). https://patentable.app/patents/US-9737209","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9737209","json":"https://patentable.app/api/llm-context/US-9737209","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T05:15:52.523Z"}