{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8526286","patent":{"patent_number":"US-8526286","title":"Optical pick-up apparatus with diffractive optical element and optical recording/reproducing apparatus having the same","assignee":null,"inventors":[],"filing_date":"2011-12-09T00:00:00.000Z","publication_date":"2013-09-03T00:00:00.000Z","cpc_codes":["G11B","G11B"],"num_claims":16,"abstract":"An optical pick-up apparatus for reproducing information recorded on an optical recording medium or recording information on the optical recording medium is provided. The optical pick-up apparatus includes a light source unit which generates beams; a diffraction element which diffracts the generated beams; and an objective lens which focuses a p order diffracted beam which is used for recording and reproducing information among a plurality of diffracted beams which are diffracted by the diffraction element on any one of a plurality of information layers which are formed on an optical recording medium. A p±1 order diffracted beam which is not used for recording and reproducing information is focused away from the plurality of information recording layers and on the surface of the optical recording medium."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Optical pick-up apparatus with diffractive optical element and optical recording/reproducing apparatus having the same","description":"An optical pick-up apparatus for reproducing information recorded on an optical recording medium or recording information on the optical recording medium is provided. The optical pick-up apparatus inc","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8526286","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-8526286","citation_suggestion":"Patentable. \"Optical pick-up apparatus with diffractive optical element and optical recording/reproducing apparatus having the same\" (US-8526286). https://patentable.app/patents/US-8526286","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8526286","json":"https://patentable.app/api/llm-context/US-8526286","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T18:48:20.672Z"}