{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9693026","patent":{"patent_number":"US-9693026","title":"Projection type display apparatus and lighting device","assignee":null,"inventors":[],"filing_date":"2015-01-09T00:00:00.000Z","publication_date":"2017-06-27T00:00:00.000Z","cpc_codes":["H04N","H04N","H04N"],"num_claims":9,"abstract":"In a projection type display apparatus, a lighting device includes two reflection type cutoff filters (first cutoff filter and reflective second cutoff filter) which block out ultraviolet range light on an output optical path from a light source. A cut on wavelength of the second cutoff filter on the front side is longer than that of the first cutoff filter on the rear side. The two cutoff filters are formed on planar-shaped first faces of a first integrator lens and a second integrator lens. For this reason, both input faces of the two cutoff filters are orthogonal to an apparatus optical axis."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Projection type display apparatus and lighting device","description":"In a projection type display apparatus, a lighting device includes two reflection type cutoff filters (first cutoff filter and reflective second cutoff filter) which block out ultraviolet range light ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9693026","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-9693026","citation_suggestion":"Patentable. \"Projection type display apparatus and lighting device\" (US-9693026). https://patentable.app/patents/US-9693026","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9693026","json":"https://patentable.app/api/llm-context/US-9693026","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T12:06:11.564Z"}