{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8474984","patent":{"patent_number":"US-8474984","title":"Projection display device","assignee":null,"inventors":[],"filing_date":"2011-01-26T00:00:00.000Z","publication_date":"2013-07-02T00:00:00.000Z","cpc_codes":["H04N"],"num_claims":4,"abstract":"A projection display device includes a light source, an optical intensity-equalizing element, an optical modulating element, an optical diffusion element, a relay optical system that is configured such that an output end of the optical intensity-equalizing element and a display element plane of the optical modulating element are optically conjugate, and a projection optical system. The relay optical system includes a first lens unit that condenses a light from the optical intensity-equalizing element and a second lens unit that further condenses a light from the first lens unit. The optical diffusion element is arranged between an light incident side of the first lens unit and the optical intensity-equalizing element. An optical axis of the second lens unit and a center of the output end of the optical intensity-equalizing element are shifted in a same direction from an optical axis of the first lens unit."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Projection display device","description":"A projection display device includes a light source, an optical intensity-equalizing element, an optical modulating element, an optical diffusion element, a relay optical system that is configured suc","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8474984","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-8474984","citation_suggestion":"Patentable. \"Projection display device\" (US-8474984). https://patentable.app/patents/US-8474984","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8474984","json":"https://patentable.app/api/llm-context/US-8474984","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T14:48:01.847Z"}