It is pointed out that the depth of focus, diffraction from aperture and radiation scattering are three main sources for image blurring of CCD receiving system.

The aerial image qualities of depth of focus ( DOF) and optical proximity effect are simulated with the lithography simulation software PROLITH.

利用光刻仿真软件PROLITH，进行了掩模版空间成像的焦深（DOF）和光学临近效应的仿真。

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A novel method for measuring dense-line depth of focus ( DOF) of a lithographic projection system is proposed.

提出了一种检测光刻机投影物镜密集线焦深（DOF）的新技术。

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First experimental data on imaging demonstrated a large gain of depth of focus ( DOF), while maintaining image contrast at high scan speed.

最初的浸液式曝光实验数据证明了焦深的增加较大，同时以高扫描速度保持了图像的对比度。

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The principle of oblique illumination for improving photolithographic resolution and increasing depth of focus is presented with partially coherent theory.

本文用部分相干光成像理论研究了提高分辨力及增大焦深的原理.建立了二元光栅倾斜照明成像数理模型。

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A graticule for the MACROSEISMIC determination of the depth of focus of an earthquake

用宏观方法测定震源深度的量版

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The technique is not only extending the depth of focus but also decreasing the cost and increasing the allowable error of the system.

该项技术不但可以增加光学系统的焦深，也能够通过去除系统光学面的方法降低系统成本、提高系统装配允差和系统对环境的适应性。

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The property of the large depth of focus imaging system is analyzed with light chart and MTF, and the result is discussed.

从光线图和系统的MTF两个方面对大焦深成像系统的特性进行了分析，并对结果进行了讨论。

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Digital image fusion technique based on multi-focus series microscopy images is an effective method to extend the depth of focus.

利用图像处理技术实现序列显微图像的融合显示是解决显微成像焦深有限的有效方法。

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In-Situ Measurement Method of Dense-Line Depth of Focus of a Lithographic Projection System

基于光学对准的光刻机投影物镜密集线焦深原位检测技术

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Differential Haar-Gaussian wavelet transform and its application to edge detection with large depth of focus

微分Haar-Gaussian小波变换在大景深物体边缘测量中的应用

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Exposure energy, improvement of resolution and depth of focus are compared with that of conventional condition.

主要就曝光能量，分辨力改善情况，焦深变化等与传统情况作了比较。

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Research of the extension of the depth of focus based on hybrid optical digital wavefront coding technique

基于波前编码的光数混合景深延拓技术的研究

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MACROSEISMIC method determining depth of focus taking into account absorption

考虑吸收时确定震源深度的宏观地震方法

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Research on an Iris Capturing Technology by Extending the Depth of Focus

扩大焦深的虹膜采集方法及实现技术研究

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Depth of focus is a very important earthquake parameter.

震源深度是地震定位的一个重要参数。

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A new technology of large depth of focus of incoherent optical systems

扩大光学系统焦深范围的光学成象新技术研究

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Property Study on large depth of focus imaging system

大焦深成像系统的特性研究

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On the Control and Application of the Depth of Focus

景深的控制和运用

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The deterioration in Natural ecological environment has given us a serious lesson. When one species disappears, we are depraved the possibility of future development it may exert on.

自然环境生态恶化已经给了我们许多深刻的教训，当一种物种消失时，我们就失去了使它作用于未来发展的可能性。

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Depraved thoughts, morals, companions

堕落的思想、道德、伙伴

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