{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8508857","patent":{"patent_number":"US-8508857","title":"Lens barrel and image pickup apparatus that realize increased shooting magnification and slimming down","assignee":null,"inventors":[],"filing_date":"2010-10-21T00:00:00.000Z","publication_date":"2013-08-13T00:00:00.000Z","cpc_codes":["H04N"],"num_claims":5,"abstract":"A lens barrel that can realize increased shooting magnification and slimming down of an image pickup apparatus without increasing drive load and optical accuracy error in driving the lens barrel along an optical axis. A cam follower follows cam grooves in a cam cylinder to move along the optical axis, and engages with a lens holding frame to move the same from a retracted state to a shooting state. A compression coil spring urges the cam follower and the lens holding frame in such a direction as to draw them away from each other, and when the cam follower moves from the shooting state to the retracted state, engages with the lens holding frame to move the same toward an image plane. A fixed portion coming into abutment with the lens holding frame restricts movement of the lens holding frame toward the image plane."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Lens barrel and image pickup apparatus that realize increased shooting magnification and slimming down","description":"A lens barrel that can realize increased shooting magnification and slimming down of an image pickup apparatus without increasing drive load and optical accuracy error in driving the lens barrel along","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8508857","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-8508857","citation_suggestion":"Patentable. \"Lens barrel and image pickup apparatus that realize increased shooting magnification and slimming down\" (US-8508857). https://patentable.app/patents/US-8508857","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8508857","json":"https://patentable.app/api/llm-context/US-8508857","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T17:06:11.722Z"}