{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-10514277","patent":{"patent_number":"US-10514277","title":"Measurement method and encoder device, and exposure method and device","assignee":null,"inventors":[],"filing_date":"2018-10-16T00:00:00.000Z","publication_date":"2019-12-24T00:00:00.000Z","cpc_codes":["G01D","G01D"],"num_claims":12,"abstract":"There is provided an encoder device to measure a relative moving amount between first and second members. The encoder device includes: a reflective-type diffraction grating on the first member; a light source unit to radiate a measuring light; a first optical member on the second member; a first and second reflecting units on the second member that cause first and third diffracted lights generated via diffraction of the measuring light and having orders different from each other to come into the diffraction grating respectively, and cause second and fourth diffracted lights generated via diffraction of the first and third diffracted lights respectively to come into the first optical member; photo-detectors configured to detect interference lights between two diffracted lights and other light beam respectively; and a measuring unit to obtain the relative moving amount by using detection signals from the photo-detectors."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Measurement method and encoder device, and exposure method and device","description":"There is provided an encoder device to measure a relative moving amount between first and second members. The encoder device includes: a reflective-type diffraction grating on the first member; a ligh","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-10514277","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-10514277","citation_suggestion":"Patentable. \"Measurement method and encoder device, and exposure method and device\" (US-10514277). https://patentable.app/patents/US-10514277","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-10514277","json":"https://patentable.app/api/llm-context/US-10514277","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T20:12:43.858Z"}