焦深

而硬X射线显微术因为焦深大、穿透能力强，因此可以克服软X射线显微术难以成像较厚细胞的缺陷，具有重要的应用价值。

Because of its larger depth of focus and higher penetration power , hard X-ray microscopy can overcome the limitation of soft x-ray microscopy which has difficulty in imaging thick cells .

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。

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

提出了一种检测光刻机投影物镜密集线焦深（DOF）的新技术。

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

利用矢量分析方法&二维时域有限差分法（FDTD）对有限口径衍射微柱透镜的焦深和焦移特性进行严格矢量分析，与传统标量分析方法的结果进行了详细比较。

We present the rigorous vector analysis of diffractive micro cylindrical lenses that are finite in extent using a two dimension finite difference time domain ( FDTD ) method .

用多束相干光适当组合干涉曝光，得到的图形与基片在干涉场内的纵向位置z无关，与x、y位置呈周期关系，光的相干长度对应传统光学光刻的焦深。

Through combination of multi-beam coherent light for interference exposure with , the obtained patterns are independent of the longitudinal position z of substrate and they appear a periodic relation with position x and position y in the interference field .

提出了一种具有增大焦深特性的改进型分形波带片（FZP）。

A modified fractal zone plate ( FZP ) with the character of extending the focal depth is proposed .

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。

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

作为分辨率增强技术（RET）之一，离轴照明技术（OAI）通过调整照明方式，不但能提高分辨率还能很好地改善焦深。

As a resolution enhancement technique ( RET ), off-axis illumination ( OAI ) can enhance resolution and improve depth of focus ( DOF ) through adjusting illumination .

h-SIL和s-SIL的分辨力、焦深、聚焦强度和随波长的色散被详细比较。

The resolution , focal depth , focused intensity , and dispersion with wavelength are compared in detail for h-SIL and s-SIL .

它不仅影响工艺窗口，即，曝光容裕度和焦深（DOF），而且也降低了掩模误差因子（MEF），这能导致附加的掩模费用。

It not only affects process windows , i.e. , exposure latitude ( EL ) and depth of focus ( DOF ), but also degrades mask error factor ( MEF ), which can introduce extra mask cost .

结论MIOL植入安全而有效，可以提供与SIOL一样良好的远视力，及更好的近视力及立体视觉、更广的焦深、较低的戴近用镜率及较高的病人满意度。

It can provide good DVA as the SIOL does , but better NVA and stereoscopic vision , less glasses use and higher satisfaction than the latter .

该系统的分辨率将以大于0.5μm的焦深有效地支持65nm节点半导体器件的加工。

The resolution capabilities of this system will support 65 nm node semiconductor devices with a DOF significantly larger than 0.5 μ m.

h-SIL的焦深随透镜数值孔径的增加迅速单调减小，而s-SIL的焦深随透镜数值孔径的增加呈现出只一个周期的振荡行为。

As NA ( numerical aperture of lens ) increases , the focal depth of the h-SIL decreases rapidly and monotonously , whereas the focal depth of the s-SIL has a one-period-only oscillatory behavior .

结果表明：当数值孔径相同时，h-SIL的焦深较s-SIL的焦深大，焦深对SIL的折射率比较敏感，而光斑大小对波长照明比较敏感。

The results show that the focal depth of the h-SIL is greater than that of the s-SIL . The focal depth of the system is sensitive to the refractive index of the SIL and the spot size is sensitive to the illuminating wavelength .

大焦深成像光学系统具有诸多的优点，研究人员探索出了多种焦深拓展方法，其中波前编码（WFC）成像技术因其独特的性能成为目前的研究前沿。

Due to many advantages of the large depth-of-focus of an imaging optical system , various methods to extend depth-of-focus of optical imaging system were proposed . Among those methods , a close attention was paid to wavefront coding ( WFC ) imaging technology because of its superior performance .

对应不同波长的照明光，h-S1L的材料色散作用将对其透射场特性产生影响。h-SIL的分辨率、焦深和聚焦强度对照明光的波长变化非常敏感，都随着波长的变化成周期性的振荡。

The transmitted field characters of h-SIL are affected by the material dispersion with illuminating lights of different wavelengths , The resolution , focal depth , focused intensity of h-SIL are sensitive to the change of wavelength and have a periodic oscillation whh the wavelength 's change .

在相对孔径为0.9，波长为1.41mm的条件下，横向分辨率为2mm，3dB焦深为17mm，第一旁瓣比主瓣下降17dB。

For a case in which the F-number is 1.1 and the wavelength is 1.4 mm , the lateral resolution is 2 mm , the focal depth ( 3 dB ) is 17 mm , and the first side lobe is 17 dB lower than the main lobe .

焦深对球面屈光不正影响的研究

A study on the effects of focus depth on spherical ametropia

光束焦深区热晕效应实验研究

Experiment of the Thermal Blooming in the Beam Focusing Range

扩大焦深的虹膜采集方法及实现技术研究

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

石油焦深加工装置的技术经济评估

Technique Economic Evaluation on the Construction of Petro-coke Deep-processing Plant

采用方形照明提高分辨率和焦深

Resolution and DOF Improvement through the Use of Square-shaped Illumination

用衍射光学元件提高出射光束的焦深

Focal depth of exit beam advanced by diffraction optical element

扩大光学系统焦深范围的光学成象新技术研究

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

固体浸没透镜高密度光存储系统的焦深

Focal depth in high-density optical storage system with a solid immersion lens

基于焦深扩展的图像融合算法研究及其实现

Research on depth-of-field expanded image blending algorithms and their implementation

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

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

对聚焦激光光束焦深的不同定义作了比较分析，并对基模高斯光束的光强分布作了数值计算，作出了等光强分布曲线。

Different definitions about focal depth of Gaussian Beam are compared and analyzed .

大焦深成像系统的特性研究

Property Study on large depth of focus imaging system

薄透镜焦距测量实验中焦深问题的研究

Research on Focal Depth in the Experiment of Thin Lens ' Focal Length Measurement