{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9664376","patent":{"patent_number":"US-9664376","title":"Projection-type image display apparatus","assignee":null,"inventors":[],"filing_date":"2015-10-06T00:00:00.000Z","publication_date":"2017-05-30T00:00:00.000Z","cpc_codes":["H04N","H04N","H04N","H04N","H04N","H04N","H04N"],"num_claims":1,"abstract":"A projection-type image display apparatus includes a light source unit, an image generating unit that generates image light according to an input video signal, a light-guide optical system that guides the light from the light source unit to the image generating unit, a projection optical system that projects the image light generated by the image generating unit, and a controller. The controller has a display mode in which the image light is projected and an illumination mode in which the light from the light source unit is emitted as illumination light. The controller controls the optical system to focus illumination light from the projection optical system on a projection surface, in the display mode, and to focus illumination light from the projection optical system at a position different from the projection screen, in the illumination mode."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Projection-type image display apparatus","description":"A projection-type image display apparatus includes a light source unit, an image generating unit that generates image light according to an input video signal, a light-guide optical system that guides","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9664376","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-9664376","citation_suggestion":"Patentable. \"Projection-type image display apparatus\" (US-9664376). https://patentable.app/patents/US-9664376","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9664376","json":"https://patentable.app/api/llm-context/US-9664376","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T12:20:01.661Z"}