{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9810821","patent":{"patent_number":"US-9810821","title":"Infrared ray cutoff filter","assignee":null,"inventors":[],"filing_date":"2015-06-10T00:00:00.000Z","publication_date":"2017-11-07T00:00:00.000Z","cpc_codes":["H04N"],"num_claims":10,"abstract":"An infrared ray cutoff filter including two or more high refractive index layers with a refractive index ranging from 1.65 to 2.00 and two or more low refractive index layers with a refractive index ranging from 1.20 to 1.45. At least one layer of the two or more high refractive index layers and the two or more low refractive index layers contains a dye having a maximum absorption wavelength in a range of 600 nm to 820 nm, and the two or more low refractive index layers are a plurality of kinds of layers which have different film thickness within a range of 50 nm to 250 nm."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Infrared ray cutoff filter","description":"An infrared ray cutoff filter including two or more high refractive index layers with a refractive index ranging from 1.65 to 2.00 and two or more low refractive index layers with a refractive index r","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9810821","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-9810821","citation_suggestion":"Patentable. \"Infrared ray cutoff filter\" (US-9810821). https://patentable.app/patents/US-9810821","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9810821","json":"https://patentable.app/api/llm-context/US-9810821","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T15:39:00.629Z"}