{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9772202","patent":{"patent_number":"US-9772202","title":"Absolute position encoder combining signals of two widely separated wavelengths","assignee":null,"inventors":[],"filing_date":"2016-07-01T00:00:00.000Z","publication_date":"2017-09-26T00:00:00.000Z","cpc_codes":["G01D","G01D","G01D"],"num_claims":20,"abstract":"An electronic absolute position encoder includes a scale extending along a measuring axis direction (MA) and including a signal modulating scale pattern defining a corresponding absolute range R along MA, a detector including sensing elements arranged along MA and configured to provide detector signals which respond to the signal modulating scale pattern, and a signal processing configuration that determines an absolute position of the detector along the scale based on the detector signals. The signal modulating scale pattern includes a coarse periodic pattern component as a function of position along the scale having a spatial wavelength λC, wherein n*λC=R and n is an integer, and a fine periodic pattern component as a function of position along the scale having a spatial wavelength λF, wherein (mn+1)*λF=R and m is an integer that is at least two. The wavelengths λC and λC may be widely separated."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Absolute position encoder combining signals of two widely separated wavelengths","description":"An electronic absolute position encoder includes a scale extending along a measuring axis direction (MA) and including a signal modulating scale pattern defining a corresponding absolute range R along","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9772202","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-9772202","citation_suggestion":"Patentable. \"Absolute position encoder combining signals of two widely separated wavelengths\" (US-9772202). https://patentable.app/patents/US-9772202","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9772202","json":"https://patentable.app/api/llm-context/US-9772202","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T15:04:40.929Z"}