{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9746687","patent":{"patent_number":"US-9746687","title":"Illumination apparatus and biometric authentication apparatus","assignee":null,"inventors":[],"filing_date":"2015-12-14T00:00:00.000Z","publication_date":"2017-08-29T00:00:00.000Z","cpc_codes":["G06V","G06V","G06V"],"num_claims":18,"abstract":"An illumination apparatus is disclosed, which includes a light source configured to generate light for an illumination area to be illuminated, and a diffraction grating element provided between the illumination area and the light source, and including a plurality of diffraction gratings arranged in a two dimensional array. A distribution of grating intervals of the diffraction gratings in the diffraction grating element has a characteristic such that a center region, along a predetermined line in a plane of the two dimensional array, has a greater grating interval than an end region."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Illumination apparatus and biometric authentication apparatus","description":"An illumination apparatus is disclosed, which includes a light source configured to generate light for an illumination area to be illuminated, and a diffraction grating element provided between the il","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9746687","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-9746687","citation_suggestion":"Patentable. \"Illumination apparatus and biometric authentication apparatus\" (US-9746687). https://patentable.app/patents/US-9746687","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9746687","json":"https://patentable.app/api/llm-context/US-9746687","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T10:20:47.930Z"}