vision是什么意思

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用法例句

The distortion,the diopter,the astigmatism and the decrease of the lens thickness are chosen as merit function,and high order aspherical equations are used to describe the aspherical surface.

通过把相对畸变、光焦度、散光、减薄量作为优化函数和使用简单有效的高次回转对称非球面方程来描述面形,设计出了高次非球面眼镜片,设计出的非球面镜片的边缘减薄量接近0。

Simulation and correction experiment on eye ametropia——determination of focal distance(focal power) of thin lenses;

眼睛屈光不正的模拟与矫正实验——薄透镜焦距(光焦度)的测定

In order to analyze the effect of the incident wavelength drift from the design wavelength of phase Fresnel lens on the focusing property of phase Fresnel lens,the dependent curves of focal power-wavelength and diffractive efficiency-wavelength for the phase Fresnel lens were obtained by adopting the finite-difference time-domain method(FDTD) as a rigorous vector analysis tool.

为了严格分析入射光波长相对相位型菲涅尔透镜的设计波长发生漂移时对其聚焦特性的影响,采用时域有限差分方法作为严格的矢量分析工具,得到了相位型菲涅尔透镜的光焦度与入射光波长以及衍射效率与入射光波长的关系曲线。

An analysis of contact lens optical properties and the back vertex power measurement;

接触镜光学特性和后顶焦度测量分析

Measurement of vertex power of spectacle lens and contact lens;

眼镜镜片及角膜接触镜的顶焦度测量

Design on Digital Focimeter of Projection Type;

数字投影式焦度计的设计

Methods:Explain the difference between power and vertex power from basic definitions of optics, and analyze the measuring principle and error of focimeter.

方法 :从光学的基础定义出发 ,阐述光焦度和顶焦度的差别 ,并对焦度计的测量原理和误差进行正确分析。

This paper introduces the realization of focimeter system based on CCD and ARM,and discusses the interrelated parameter arithmetic of lens based on CCD at the same time.

介绍了基于CCD和ARM的焦度计系统的实现,同时着重讨论了了基于CCD的透镜的相关参数算法,最后介绍了基于该算法的系统的实现。