{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8542448","patent":{"patent_number":"US-8542448","title":"Imaging lens, imaging apparatus and portable terminal device","assignee":null,"inventors":[],"filing_date":"2012-11-20T00:00:00.000Z","publication_date":"2013-09-24T00:00:00.000Z","cpc_codes":["H04N","H04N"],"num_claims":14,"abstract":"An imaging lens is provided and includes: in order from the object side, a first lens having a positive refractive power; a second lens having a negative refractive power; a third lens having a concave surface on the image side near the optical axis and having a positive refractive power; a fourth lens having a positive refractive power near the optical axis; and a fifth lens having a negative refractive power near the optical axis. An image side surface of the fifth lens is concave near the optical axis and has a region where a negative power of the region decreases toward a periphery of the fifth lens as compared with a negative power near the optical axis."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Imaging lens, imaging apparatus and portable terminal device","description":"An imaging lens is provided and includes: in order from the object side, a first lens having a positive refractive power; a second lens having a negative refractive power; a third lens having a concav","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8542448","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-8542448","citation_suggestion":"Patentable. \"Imaging lens, imaging apparatus and portable terminal device\" (US-8542448). https://patentable.app/patents/US-8542448","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8542448","json":"https://patentable.app/api/llm-context/US-8542448","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T13:45:14.262Z"}