{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9594255","patent":{"patent_number":"US-9594255","title":"Stereoscopic 3D projection system with improved level of optical light efficiency","assignee":null,"inventors":[],"filing_date":"2015-06-25T00:00:00.000Z","publication_date":"2017-03-14T00:00:00.000Z","cpc_codes":["G02F","H04N","H04N","H04N"],"num_claims":26,"abstract":"A time-multiplexed stereoscopic 3d projection system including a beam-splitting element to split the randomly polarized image-beam generated by a single-lens projector into one primary image-beam, possessing a first state of linear polarization, and two secondary image-beams, both possessing a second state of linear polarization. The polarization states are mutually orthogonal. The primary and secondary image-beams recombine to form a complete image on the surface of a polarization-preserving projection-screen. There are polarization modulators that modulate the first and second states of linear polarization between a left and right circular polarization state. There is a contrast enhancement film in the optical-path of the primary or secondary image-beams located between the polarization modulator and the projection-screen. The contrast enhancement film comprises a stack of at least three uniaxially stretched retardation-films which perturb the circular polarization state of said image-beams and which possess an in-plane retardation value substantially equal to 140 nm, 270 nm, or 540 nm."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Stereoscopic 3D projection system with improved level of optical light efficiency","description":"A time-multiplexed stereoscopic 3d projection system including a beam-splitting element to split the randomly polarized image-beam generated by a single-lens projector into one primary image-beam, pos","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9594255","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-9594255","citation_suggestion":"Patentable. \"Stereoscopic 3D projection system with improved level of optical light efficiency\" (US-9594255). https://patentable.app/patents/US-9594255","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9594255","json":"https://patentable.app/api/llm-context/US-9594255","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T19:50:52.296Z"}