{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9632291","patent":{"patent_number":"US-9632291","title":"Infrared optical system, infrared image capturing apparatus","assignee":null,"inventors":[],"filing_date":"2013-05-14T00:00:00.000Z","publication_date":"2017-04-25T00:00:00.000Z","cpc_codes":["H04N"],"num_claims":12,"abstract":"There is provided an infrared optical system includes a light collecting lens having a curved light collecting surface for collecting infrared light incident from an object side, the lens being made of resin having a stepped shape being gradually deeper from periphery to center; and an optical path length correction element for correcting a difference in an optical path length produced by the stepped shape of the light collecting lens. The above-described stepped shape is provided to allow the lens to be thinner than the lens having the plano-convex shape. In other words, the infrared transmittance of the optical system is improved. In addition, the optical path length correction element can correct a difference in an optical path length produced by the stepped shape of the light collecting lens."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Infrared optical system, infrared image capturing apparatus","description":"There is provided an infrared optical system includes a light collecting lens having a curved light collecting surface for collecting infrared light incident from an object side, the lens being made o","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9632291","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-9632291","citation_suggestion":"Patentable. \"Infrared optical system, infrared image capturing apparatus\" (US-9632291). https://patentable.app/patents/US-9632291","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9632291","json":"https://patentable.app/api/llm-context/US-9632291","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T07:02:59.651Z"}