Curvature of field

A restoration scheme is proposed for space - variant image degradation resulting from curvature of field in imaging systems .

提出了一种用于像场弯曲图像的复原方法，分析了该方法的原理。

The optical system use the aspherical technology can eliminate spherical aberration , astigmatism , curvature of field and reduce the energy losing . Consequently , high-quality images and high-quality optical properties can be attained by using the aspherical optical components .

采用非球面技术设计的光学系统，可消除球差、慧差、像散、场曲，减少光能损失，从而获得高质量的图像效果和高品质的光学特性。

Curvature of field : A lens fault in which a perfect image at all pionts on the flat film cannot be formed because the lens do not have the right curvature .

像面弯曲：镜头像差的一种。由于镜头的度不准确，所以不能在平放的菲林上造成完美的影像；

The allowed region of the angular velocity of vortex depends strongly on the curvature of magnetic field lines .

涡旋角速度允许区强烈地依赖于磁场力线的曲率。

The phase curvature of Fraunhofer diffraction field and its effect on wave propagation and imaging

夫琅禾费衍射场的相位弯曲及其对光传输和成像过程的影响

The form of phase curvature of Fraunhofer diffraction field and its concrete expressions in different conditions are derived in the frame of general physics , their physical meanings are explicitly explained .

在普通物理的框架内对不同情况下夫琅禾费衍射光场的相位弯曲因子的形式进行了推导，并对其物理意义给出直观的说明；

There is always field curvature in image of large field optical systems .

大视场光学系统的像面往往存在场曲。

At the same time , the distribution fractures in the strata have been predicted and evaluated by means of analysis of curvature , simulation of stress field and fault factors et.

采用曲率法、应力场模拟技术及断裂因子等方法，对研究区风化期破裂缝及构造裂缝分布进行了预测评价。

So it will be not precise if we discuss the radiation process of pulsars with synchrotron radiation or cyclotron radiation , but the synchron-curvature radiation can solve the curvature effect of the magnetic field very well .

因此，当人们使用同步辐射或者回旋辐射机制研究脉冲星的外层辐射时就会产生偏差，而同步-曲率辐射机制可以较好的解决磁场弯曲所带来的影响。

We find that the resulting SCSC spectrum is significantly different from that of either synchrotron self-Compton or curvature self-Compton radiation if both the curvature radius of the magnetic field and the cyclotron radius of the electrons are within some proper ranges .

我们发现，如果磁场的曲率半径以及电子的回旋半径都具备适当的取值，同步曲率自康普顿辐射的能谱与同步自康普顿或曲率自康普顿辐射都存在较大差异。