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Systems for data reading from optical disks on the basis of diffractive lenses

机译:基于衍射透镜从光盘读取数据的系统

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Abstract: Systems for reading data from optical disks are suggested. In these systems a diffractive lens simultaneously executes the functions of a focusing objective and the dispersive element of dynamical autofocusing device. The design of diffractive lens structure is given for two cases. In the first case the objective focusing semiconductor laser emission consists of a single diffractive lens. In the second case, it consists of a diffractive and homogeneous lens with spherical surfaces. When designing the diffractive lens structure, one must consider that semiconductor lasers have a heat instability of emission frequency and emission wavelength spread from one sample to another. !16
机译:摘要:建议从光盘读取数据的系统。在这些系统中,衍射透镜同时执行聚焦物镜和动态自动聚焦设备的色散元件的功能。针对两种情况给出了衍射透镜结构的设计。在第一种情况下,物镜聚焦半导体激光发射由单个衍射透镜组成。在第二种情况下,它由具有球形表面的衍射均匀透镜组成。在设计衍射透镜结构时,必须考虑到半导体激光器的发射频率和发射波长从一个样品扩散到另一个样品的热不稳定性。 !16

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