{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9651778","patent":{"patent_number":"US-9651778","title":"Light flux diameter enlarging element and display device","assignee":null,"inventors":[],"filing_date":"2016-03-02T00:00:00.000Z","publication_date":"2017-05-16T00:00:00.000Z","cpc_codes":["H04N","H04N"],"num_claims":12,"abstract":"A light flux diameter expanding element (a pupil expanding element) used in a retina scanning display device includes first to fourth diffraction gratings which are provided with grating patterns extending in a first direction, and fifth to eighth diffraction gratings which are provided with grating patterns extending in a second direction, and includes a half-wave plate between the first diffraction grating and the fifth diffraction grating. A first light flux of polarized light in which an electric field vector oscillates in the first direction enters the first diffraction grating. A second light flux of polarized light in which the electric field vector oscillates in the second direction enters the fifth diffraction grating due to the half-wave plate. Therefore, it is possible to expand a diameter of the incident first light flux in the first direction and the second direction and emit the result as the third light flux."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Light flux diameter enlarging element and display device","description":"A light flux diameter expanding element (a pupil expanding element) used in a retina scanning display device includes first to fourth diffraction gratings which are provided with grating patterns exte","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9651778","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-9651778","citation_suggestion":"Patentable. \"Light flux diameter enlarging element and display device\" (US-9651778). https://patentable.app/patents/US-9651778","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9651778","json":"https://patentable.app/api/llm-context/US-9651778","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T11:41:27.190Z"}