{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9798138","patent":{"patent_number":"US-9798138","title":"Optical scanning device, image forming apparatus, and imaging optical element","assignee":null,"inventors":[],"filing_date":"2016-01-28T00:00:00.000Z","publication_date":"2017-10-24T00:00:00.000Z","cpc_codes":["H04N","H04N","H04N"],"num_claims":17,"abstract":"An optical scanning device includes a deflector for deflecting a light beam to optically scan a scanned region on a scanned surface in a main scanning direction, and an imaging optical system for guiding the light beam deflected by the deflector, to the scanned surface. The imaging optical system includes an imaging optical element in which, in the main scanning direction, a distance to an optical axis from one effective end portion through which a light beam that enters one end portion of the scanned region passes is longer than a distance to the optical axis from another effective end portion through which a light beam that enters another end portion of the scanned region passes. In the imaging optical element, a thickness in an optical axis direction of the one effective end portion is thinner than a thickness in the optical axis direction of the other effective end portion."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Optical scanning device, image forming apparatus, and imaging optical element","description":"An optical scanning device includes a deflector for deflecting a light beam to optically scan a scanned region on a scanned surface in a main scanning direction, and an imaging optical system for guid","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9798138","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-9798138","citation_suggestion":"Patentable. \"Optical scanning device, image forming apparatus, and imaging optical element\" (US-9798138). https://patentable.app/patents/US-9798138","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9798138","json":"https://patentable.app/api/llm-context/US-9798138","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T04:58:09.061Z"}