{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9622301","patent":{"patent_number":"US-9622301","title":"Smoke detector with regulated constant-current circuit for driving optical sources","assignee":null,"inventors":[],"filing_date":"2015-05-20T00:00:00.000Z","publication_date":"2017-04-11T00:00:00.000Z","cpc_codes":["G01N","G01N","G01N"],"num_claims":22,"abstract":"Systems and methods for driving optical sources operating at different wavelengths within a smoke sensor are described herein. Multiple optical sources such as light emitting diodes may be used in a photoelectric smoke sensor to detect particles of different sizes. Photoelectric smoke sensors can operate by pulsing the LEDs and measuring a response in a light sensor. The signal measured at the light sensor changes based on the quantity of particles existing in a smoke chamber. Each optical source may have different operational characteristics and thus require different drive currents to operate. LED driving circuitry according to embodiments discussed herein provide a consistent and reliable drive current to each optical source, while maximizing efficiency of power consumption across a range of possible voltages provided by different power sources."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Smoke detector with regulated constant-current circuit for driving optical sources","description":"Systems and methods for driving optical sources operating at different wavelengths within a smoke sensor are described herein. Multiple optical sources such as light emitting diodes may be used in a p","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9622301","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-9622301","citation_suggestion":"Patentable. \"Smoke detector with regulated constant-current circuit for driving optical sources\" (US-9622301). https://patentable.app/patents/US-9622301","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9622301","json":"https://patentable.app/api/llm-context/US-9622301","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T10:17:06.728Z"}