A kind of diffraction element modulating phase information by LC space light modulator to get a zoom Fresnel lens, as well as the using of said element to optical imaging system, is introduced.
本文介绍一种以液晶空间光调制器作为调制位相信息的衍射元件，获得可变焦长的菲涅耳透镜，以及该元件在光学成像系统中的应用。
The CAM CAD system for optical zoom lens applys computer technology to design zoom lens automatically with high precision and high efficiency.
光学变焦凸轮计算机辅助设计系统是应用计算机技术，实现对变焦凸轮高精度、高效率的自动化设计。
Zoom lens plays an important role in the optical information capture of the whole optical system.
变焦距物镜组对整个系统的光学信息传递有着重要的作用。
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