发明名称 Optical pickup apparatus.
摘要 <p>The present invention provides an optical pickup apparatus for reading informational signals written in a recording medium such as magneto-optical disc (1) in which a flux of reflected light from a recording medium which is irradiated with a flux of light is inclinedly incident from one side upon a flat plate like transparent member (8b; 11b; 15) having one side which is a polarization reflection surface (8c; 11c; 15a) and the other side which is a total reflection surface (8d; 11d; 15b) and fluxes of light reflected on the one side and the other side of the flat plate like transparent member (8b; 11b; 15) are detected by a photo-detecting element (9; 12; 14; 16) whereby simplification of the structure is achieved. &lt;IMAGE&gt;</p>
申请公布号 EP0469580(A2) 申请公布日期 1992.02.05
申请号 EP19910112881 申请日期 1991.07.31
申请人 SONY CORPORATION 发明人 SEO, KATSUHIRO
分类号 G11B11/10;G11B11/105;G11B7/09;G11B7/13;G11B7/135 主分类号 G11B11/10
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