{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9644803","patent":{"patent_number":"US-9644803","title":"Light source and image projection apparatus","assignee":null,"inventors":[],"filing_date":"2015-04-23T00:00:00.000Z","publication_date":"2017-05-09T00:00:00.000Z","cpc_codes":["H04N","H04N"],"num_claims":52,"abstract":"In a light source in which a semiconductor luminescence element and a phosphor are combined, red light having high color purity is efficiently radiated. The light source includes: a semiconductor luminescence element; a fixed or rotatable first wavelength converting unit; and a rotatable second wavelength converting unit. The second wavelength converting unit includes: a second wavelength converting region that absorbs output light emitted from the semiconductor luminescence element and radiates light having a second wavelength different from that of the output light; and a transmission region that transmits the output light. The first wavelength converting unit absorbs the output light to radiate light having a first wavelength longer than the second wavelength of the light, and the light having the first wavelength is transmitted through the transmission region."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Light source and image projection apparatus","description":"In a light source in which a semiconductor luminescence element and a phosphor are combined, red light having high color purity is efficiently radiated. The light source includes: a semiconductor lumi","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9644803","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-9644803","citation_suggestion":"Patentable. \"Light source and image projection apparatus\" (US-9644803). https://patentable.app/patents/US-9644803","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9644803","json":"https://patentable.app/api/llm-context/US-9644803","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T16:25:18.144Z"}