在满足设计指标的前提下，和变焦系统相比，该光学系统结构简单、成本低、可行性高。
In contrast with zoom system, the simple optics systems meet the requirements of low cost and high feasibility.
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。
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.
介绍了一种用于牙科诊断的变焦光学系统的设计。
An optical design of a zoom system applying for dentistry diagnose is presented.
可借助该程序对变焦系统任意焦距位置的光学性能和像差特性进行实时评估。
It can be used to really evaluate the optical performance and imaging characters at any focal length of a zoom 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。
Zoom lens plays an important role in the optical information capture of the whole optical system.
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。
The CAM CAD system for optical zoom lens applys computer technology to design zoom lens automatically with high precision and high efficiency.
变焦距光学系统凸轮曲线设计是保证光学系统变焦精确、平滑和驱动力均衡的关键。
The design of the CAM curves of the zoom system is critical to keep the precise, smooth and balance movement of the optical system.
首先应用动态光学理论推导出变焦光学系统的像移补偿组公式，从而得到像移补偿组的轨迹曲线。
With dynamic optical theory, the image motion compensating group formula of the zoom optical system is derived, and the trace curve of the image motion compensating group is plotted.
简要介绍了变焦距电视摄像镜头光学系统像差平衡方案及主要像差结果。
The aberration equilibrium of the zoom optical system of television camera and the main aberrations have been simply discussed.
变焦距光学系统已经在各种光学仪器上获得了广泛的应用，一些新的设计思想也层出不穷。
Zoom optical systems have been widely used on all kinds of optical instruments, and more and more new design methods have been employed.
目前，研究工作在类似的光学系统，这使得有可能改变焦距。
At present researchers work at the analogous optical system, which makes possible to change focal length.
目前，研究工作在类似的光学系统，这使得有可能改变焦距。
At present researchers work at the analogous optical system, which makes possible to change focal length.
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