弥散斑

第二，根据散焦模型，由两物点在CCD成像面上弥散斑直径的大小关系判断实际成像面与聚焦像面的相对位置关系。

Secondly , judge the position relationship between actual image surface and focused image plane according to defocus model .

通过对MTF，弥散斑，畸变等分析，表明投影光学系统设计满足成像要求。

The MTF , spot radius and distortion were analyzed to evaluate the projection optical system .

基于弥散斑单基站定距的可行性分析

Feasibility Analysis of Distance Measurements Based on Defocused Spots from Mono-View

本文作者设计了一种应用激光技术测定近视眼弥散斑变化的方法，并将其初步测试结果与理论计算值进行了比较。

A new method for measuring the blur circle diameter with laser technique was designed .

给出了在各种角度入射情况下的最佳像点位置及像点弥散斑大小，通过对结果进行分析，得出了最佳像面曲线及其特征与参数。

The optimal focus position and the size of diffused image for different incident angle are presented .

经典斑不同切面呈不同形态，而弥散斑形态比较一致。

The different cross-section of classic plaque was different in form , whereas the diffuse plaque was in similar structure .

0.1μm激光尘埃粒子计数器中点光源大立体角反射成像弥散斑及其处理

Reflexive Speckle Image of the Point Light Source in the Laser Airborne Particle Counter for 0.1 μ m and Its Processing

对于实际光学系统，由于光的衍射和像差，使所成的点像为一弥散斑。

However , for the actual optical system , its point image become a speckle because of diffraction of light and aberration .

采用光线追迹公式计算球差量和像方交点弥散斑分布值。

The aberration and the distribution value of blur spot on the intersection point of the orientation of image were calculated by the light focus formula .

欺骗式干扰仿真模型由真假目标在导引头探测器上形成的激光弥散斑的能量建立。

The fraudulent jamming model is established according to the laser energy distribution on the detector of seeker , which is formed by the true target and the false target .

设计了衍射受限长波红外变焦投影光学系统，系统变倍比为23，弥散斑直径小于50μm。

Long wave zoom optical system that is diffraction limited is designed . The zoom ratio is 2.3 , and the diameter of spot dispersion is no more than 50 μ m.

在理论上分析了基于弥散斑的单基站定距方法，幷利用远心光路改善弥散斑的测量。

The method of distance measurement based on defocused spots from mono-view is analyzed in theory , and the telecentric light path is used to improve the detection of defocused spots in the system .

通过监测与所接收的激光弥散斑相对应的输出信号的变化率可以对探测器进行实时非接触测量，从而实现以双四象限探测器为接收器件的产品的在线检测和质量控制。

A Virtual instrument is proposed for the purpose of on-line inspection and quality control of the product with double four quadrant photoelectric detector as its receiver through real-time and non-contact inspection of the change ratio of output signals corresponding to dispersion spots received by the detector .

通过以上的研究工作，本文提出了散射电子扩大弥散圆斑的见解，提出了电子散射降低了像增强器光电阴极灵敏度这个结论。

The paper also proposes and the conclusion which is electronic scattering can reduce the photocathode sensitivity of the image intensifier .

信号的分布方式可分为弥散型、斑片型及局灶型三种类型。

Distributions of abnormal signals could be classified into three types : diffusive , mottled , and focal .