{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9658444","patent":{"patent_number":"US-9658444","title":"Autofocus system and autofocus method for focusing on a surface","assignee":null,"inventors":[],"filing_date":"2014-11-12T00:00:00.000Z","publication_date":"2017-05-23T00:00:00.000Z","cpc_codes":["H04N"],"num_claims":18,"abstract":"An autofocus system includes an imaging device, a lens system and a focus control actuator that is configured to change a focus position of the imaging device in relation to a stage. The electronic control unit is configured to control the focus control actuator to a plurality of predetermined focus positions, and activate the imaging device to obtain an image at predetermined positions and then apply a spatial filter to the obtained images. This generates a filtered image for the obtained images. The control unit determines a focus score for the filtered images such that the focus score corresponds to a degree of focus in the obtained images. The control unit identifies a best focus position by comparing the focus score of the filtered images, and controls the focus control actuator to the best focus position corresponding to the highest focus score."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Autofocus system and autofocus method for focusing on a surface","description":"An autofocus system includes an imaging device, a lens system and a focus control actuator that is configured to change a focus position of the imaging device in relation to a stage. The electronic co","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9658444","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-9658444","citation_suggestion":"Patentable. \"Autofocus system and autofocus method for focusing on a surface\" (US-9658444). https://patentable.app/patents/US-9658444","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9658444","json":"https://patentable.app/api/llm-context/US-9658444","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T09:41:36.396Z"}