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Confocal detector scanning system for compact disc player - uses fibre=optic assembly in place of conventional pinhole diaphragm
Confocal detector scanning system for compact disc player - uses fibre=optic assembly in place of conventional pinhole diaphragm
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机译:用于光盘播放机的共焦探测器扫描系统-使用光纤=光学组件代替传统的针孔膜片
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摘要
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).
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