{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8469516","patent":{"patent_number":"US-8469516","title":"Illumination apparatus and projection display apparatus","assignee":null,"inventors":[],"filing_date":"2010-03-19T00:00:00.000Z","publication_date":"2013-06-25T00:00:00.000Z","cpc_codes":["H04N"],"num_claims":5,"abstract":"An illumination apparatus includes: a polarization conversion element configured to align polarization directions of light emitted from a light source in one polarization direction; a color separation unit configured to separate the light whose polarization directions are aligned in the one polarization direction by the polarization conversion element; and a polarization adjustment element configured to adjust a polarization state of light in a predetermined wavelength band within a wavelength range of the light emitted from the light source. The polarization adjustment element is provided between the polarization conversion element and the color separation unit on an optical path of the light emitted from the light source."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Illumination apparatus and projection display apparatus","description":"An illumination apparatus includes: a polarization conversion element configured to align polarization directions of light emitted from a light source in one polarization direction; a color separation","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8469516","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-8469516","citation_suggestion":"Patentable. \"Illumination apparatus and projection display apparatus\" (US-8469516). https://patentable.app/patents/US-8469516","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8469516","json":"https://patentable.app/api/llm-context/US-8469516","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T21:46:19.816Z"}