NL9001202A
Expired / Lapsed
NL
⏱️ 0.0 years remaining
Confocal detector scanning system for compact disc player - uses fibre=optic assembly in place of conventional pinhole diaphragm
Assignee: Philips Nv
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Filing: 1990-05-25
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Granted: —
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Expires: 2010-05-25
Abstract
Abstract Light from a source (11) is focussed (12) and reflected by a half-silvered mirror (30) to a condenser lens assembly (13). The light is channelled along an optical fibre (45) and focussed (50) onto the data carrying surface (61) within the medium (60), e.g. a Compact Disc. Reflections from the surface (61) pass back through the lens (50), optical fibre (45), condenser lens (13) and mirror (30) to a lens (22) which focusses the image onto an opto-electrical transducer (21).
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
NL
Data Source
google_patents
Last Synchronized
2026-10-27 21:18
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/12; G11B7/135; G11B7/1384; G02; G02B; G02B21/00; G02B21/0004; G02B21/002; G02B21/0024; G02B21/008; G11B7/08; G11B7/09; G11B7/0925
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