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发明授权
US6072762A Optical disk recording/reproducing method and apparatus for preventing wave length shift during recording and reproducing operations 失效
用于在记录和再现操作期间防止波长偏移的光盘记录/再现方法和装置

Optical disk recording/reproducing method and apparatus for preventing wave length shift during recording and reproducing operations
摘要：
Between a semiconductor laser diode and an optical disk, a collimator lens for collimating a laser beam output from the semiconductor laser diode, a liquid crystal optical shutter for attenuating the collimated beam having passed through the collimator lens, and a beam splitter for splitting reflected light from the optical disk are disposed. In addition, a collective lens for collecting the collimated beam obtained by the collimator lens on a data holding surface of the optical disk is further disposed.
摘要（中）：

在半导体激光二极管和光盘之间，用于准直半导体激光二极管输出的激光束的准直透镜，用于衰减通过准直透镜的准直光束的液晶光学快门，以及用于分离反射光的分束器 从光盘配置。 此外，还设置有用于收集由准直透镜获得的准直光束在光盘的数据保持表面上的集体透镜。

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