{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8513892","patent":{"patent_number":"US-8513892","title":"Illuminance sensor, and electronic equipment and semiconductor device using the same","assignee":null,"inventors":[],"filing_date":"2010-03-23T00:00:00.000Z","publication_date":"2013-08-20T00:00:00.000Z","cpc_codes":["H04M","H04W"],"num_claims":22,"abstract":"In an illuminance sensor, a photoelectric converter (1) includes three photosensors (PS), and each photosensor (PS) outputs a current as a difference between photocurrents generated in two photodiodes (PDA, PDB) having different light reception characteristics. Ratios between light receiving areas of the two photodiodes (PDA, PDB) in the three photosensors (PS) are different from each other, and the sum of positive currents among output currents of the three photosensors (PS) is constant for a given illuminance, regardless of the type of light source. A computation control unit (7) obtains illuminance based on the sum of the positive currents among the output currents of the three photosensors (PS)."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Illuminance sensor, and electronic equipment and semiconductor device using the same","description":"In an illuminance sensor, a photoelectric converter (1) includes three photosensors (PS), and each photosensor (PS) outputs a current as a difference between photocurrents generated in two photodiodes","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8513892","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-8513892","citation_suggestion":"Patentable. \"Illuminance sensor, and electronic equipment and semiconductor device using the same\" (US-8513892). https://patentable.app/patents/US-8513892","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8513892","json":"https://patentable.app/api/llm-context/US-8513892","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T04:15:48.126Z"}