数字彩色多层光盘系统光学头设计

Design of an Optical Pick-up for the Multi-colored Multi-layered Optical Disk System

在分析数字彩色多层光盘系统结构特点及光学头设计要求的基础上 ,介绍了以宽光谱高衍射效率全息光栅及复消色差物镜为关键元件的合光分光光学头系统的设计 。

In the paper, we discuss the features of multi layered optical disk and the design parameters, and introduce a new design of optical pick up, which takes the holography grating with wide wavelength band and high diffraction efficiency and apochromatic objective as the key components. At the same time, collimation and plastic system for diode laser is also presented.