【摘要】 阐述了光盘的光学聚焦伺服、循迹伺服和光信息拾取原理，介绍了由分立元件、全息光学元件、光电混合集成和单片集成等所构成多种光学拾音器的结构，并对光学拾音器技术的现状与发展进行了回顾与探讨更多还原

【Abstract】 : The principles of focus servo and track servo of optical disk are described as well as picking up of optical information.Several structures of optical pickup devices consisting of discrete components,holographic optical elements,optoelectronic hybrid- and monolithic-integrated modes are introduced respectively.The present status and advances in the technology of optical pickup device for the optical disk are reviewed and discussed.更多还原