| 1. | Influence of multipole deflection field on electron beam defocus
多极偏转场对电子束散焦的影响分析 |
| 2. | Second , it introduces an additive phase component which induces defocus in cross - range
二是引入了附加的相位分量，在方位向造成散焦。 |
| 3. | Methods of psf and noise variance estimation are proposed for practical restoration and thanks to them a real defocus image is perfectly restored
在此基础上，对一个实际的模糊图像进行了恢复处理并取得了良好的效果。 |
| 4. | According to the discussing results , it can be seen that defocus measurement method with one - way defocused detector is really an effective method for defocus monitoring
研究结果表明,单向离焦差动检测方法是一种有效的离焦监测技术途径。 |
| 5. | Laser direct writing system is the key equipment for fabrication of optical diffractive elements , and the defocus detection technique is the important sub - tech in it
激光直写机是制作衍射光学元件的关键设备,离焦检测技术是其中的重要单元技术之一。 |
| 6. | In the method dfd ( depth from defocus ) , feasibilities of restoring images from defocus images and estimating the focused position are discussed and confirmed
离焦深度法估计离焦距离或者进行图像恢复的依据是成像系统的点扩散函数及它所产生的模糊圆。 |
| 7. | In this paper , the differential astigmatic detection method for defocus measurement with one - way defocused detector is developed from the conventional differential astigmatic detection
本文在传统差动像散检测方法基础上,给出一种基于单向离焦的差动像散检测方法。 |
| 8. | The aim of defocus detection is to achieve high etching quality by providing the defocus error signal for focus - servo system which can make the etching spot focus accurately
离焦检测的任务是为聚焦伺服系统提供聚焦误差信号,使写入光斑能够精确聚焦,从而保证刻蚀质量。 |
| 9. | We simulate the practicality system to experimentalize , obtain the relation between defocus and focus error signal , make it a condition that na = 0 . 625 and n = 1 . 7979
并模拟实际系统，实验得出当临界角棱镜的折射率n = 1 . 7979 、物镜的数值孔径na = 0 . 625时，离焦量与离焦误差信号的关系曲线。 |
| 10. | We acquired best restoration of defocus images using one blurred image , and estimated the focused position according to radius of blurred circles at two different lens positions , the focus error was less than 5 %
利用单幅图像，用图像恢复的手段得到了准焦位置图像的最佳恢复；利用在两个位置所得图像，用模糊圆半径估计出准确对焦位置，对焦误差小于5 。 |
