{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9759584","patent":{"patent_number":"US-9759584","title":"Encoder having a detection head with a reference detection receiving grating and a phase compensation receiving grating","assignee":null,"inventors":[],"filing_date":"2015-12-22T00:00:00.000Z","publication_date":"2017-09-12T00:00:00.000Z","cpc_codes":["G01D","G01D"],"num_claims":9,"abstract":"In a scale, a reference detection pattern and a displacement detection pattern are formed. A detection head outputs a reference detection signal, a phase compensation signal, and a displacement detection signal. A signal processing unit generates a reference signal by amplifying one or both of the phase compensation signal and the reference detection signal and adding up them, and detects a position of the detection head relative to the scale. A combined light receiving grating includes a reference detection light receiving grating and a phase compensation light receiving grating disposed so as to be shifted from the reference detection light receiving grating in the measurement direction. A combined light receiving element includes a reference detection light receiving element configured to output the reference detection signal and a phase compensation light receiving element configured to output the phase compensation signal."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Encoder having a detection head with a reference detection receiving grating and a phase compensation receiving grating","description":"In a scale, a reference detection pattern and a displacement detection pattern are formed. A detection head outputs a reference detection signal, a phase compensation signal, and a displacement detect","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9759584","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-9759584","citation_suggestion":"Patentable. \"Encoder having a detection head with a reference detection receiving grating and a phase compensation receiving grating\" (US-9759584). https://patentable.app/patents/US-9759584","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9759584","json":"https://patentable.app/api/llm-context/US-9759584","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T06:43:50.610Z"}