{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8469554","patent":{"patent_number":"US-8469554","title":"Illuminating lens, lighting device, surface light source, and liquid-crystal display apparatus","assignee":null,"inventors":[],"filing_date":"2010-02-12T00:00:00.000Z","publication_date":"2013-06-25T00:00:00.000Z","cpc_codes":["G02F","G02F","G02F"],"num_claims":10,"abstract":"An illuminating lens includes a light entrance surface, a light exit surface, and a reversing surface. The light exit surface has a first light exit surface and a second light exit surface. The first light exit surface is recessed toward a point on the optical axis, and the second light exit surface extends outwardly from the periphery of the first light exit surface. The first light exit surface includes a transmissive region in the center thereof and a total reflection region on the peripheral side thereof. The reversing surface has a shape such that the light that has been emitted from the light source, totally reflected repeatedly at the light exit surface, and then reached the reversing surface is guided to the first light exit surface by total reflection."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Illuminating lens, lighting device, surface light source, and liquid-crystal display apparatus","description":"An illuminating lens includes a light entrance surface, a light exit surface, and a reversing surface. The light exit surface has a first light exit surface and a second light exit surface. The first ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8469554","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-8469554","citation_suggestion":"Patentable. \"Illuminating lens, lighting device, surface light source, and liquid-crystal display apparatus\" (US-8469554). https://patentable.app/patents/US-8469554","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8469554","json":"https://patentable.app/api/llm-context/US-8469554","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T15:53:43.190Z"}