{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8508688","patent":{"patent_number":"US-8508688","title":"Illuminating lens, lighting device, surface light source, and liquid-crystal display apparatus","assignee":null,"inventors":[],"filing_date":"2010-03-09T00:00:00.000Z","publication_date":"2013-08-13T00:00:00.000Z","cpc_codes":["G02F","G02F","G02F","G02F"],"num_claims":14,"abstract":"An illuminating lens has a light entrance surface and a light exit surface. The light exit surface has a first light exit surface recessed toward a point on an optical axis A and a second light exit surface extending outwardly from the periphery of the first light exit surface. The first light exit surface includes a transmissive region located in the center of the first light exit surface and a total reflection region located around the transmissive region. The transmissive region transmits light that has been emitted from a starting point Q, which is the position of a light source on the optical axis A, at a relatively small angle with respect to the optical axis A. The total reflection region totally reflects light that has been emitted from the starting point Q at a relatively large angle with respect to the optical axis A."},"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 has a light entrance surface and a light exit surface. The light exit surface has a first light exit surface recessed toward a point on an optical axis A and a second light exit s","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8508688","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-8508688","citation_suggestion":"Patentable. \"Illuminating lens, lighting device, surface light source, and liquid-crystal display apparatus\" (US-8508688). https://patentable.app/patents/US-8508688","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8508688","json":"https://patentable.app/api/llm-context/US-8508688","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T17:06:01.682Z"}