{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11255657","patent":{"patent_number":"US-11255657","title":"Image capturing apparatus with optical fiber located inside minute hole in objective lens","assignee":null,"inventors":[],"filing_date":"2020-11-03T00:00:00.000Z","publication_date":"2022-02-22T00:00:00.000Z","cpc_codes":["H04N"],"num_claims":14,"abstract":"An image capturing apparatus for capturing an image of a workpiece held on a chuck table includes a camera, an objective lens having a minute hole defined centrally therein and disposed in facing relation to the workpiece held on the chuck table, an optical fiber having an end inserted in the minute hole in the objective lens, a light source optically coupled to another end of the optical fiber, and a beam splitter disposed in the optical fiber for branching off returning light reflected by the workpiece held on the chuck table. The image capturing apparatus further includes a calculating section for calculating a value representing a height or a thickness of the workpiece on the basis of the returning light branched off by the beam splitter, and a focusing mechanism for focusing the objective lens on the workpiece on the basis of the value calculated by the calculating section."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Image capturing apparatus with optical fiber located inside minute hole in objective lens","description":"An image capturing apparatus for capturing an image of a workpiece held on a chuck table includes a camera, an objective lens having a minute hole defined centrally therein and disposed in facing rela","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11255657","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-11255657","citation_suggestion":"Patentable. \"Image capturing apparatus with optical fiber located inside minute hole in objective lens\" (US-11255657). https://patentable.app/patents/US-11255657","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11255657","json":"https://patentable.app/api/llm-context/US-11255657","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T21:21:14.010Z"}