average speed

SPD-Ⅰ Flat Field Polychromator With a Holographic Concave Diffraction Grating;

SPD-Ⅰ型全息凹面衍射光栅平场多色仪

From the viewpoint of the geometrical imaging theory,the second order circular and flat field imaging properties of holographically concave diffraction grating spectrographs with a fixed entrance slit and the circular or flat field image are investigated by use of a straightforward analytics.

从全息凹面光栅几何成象理论出发，用简捷的解析方法研究固定入射狭缝全息凹面衍射光栅摄谱装架二阶圆场和平场成象特性。

A 9×9 channel 200 GHz spacing flat field AWG wavelength router was designed and simulated.

设计了频率间隔为200GHz的9×9通道平场AWG波长路由器,光场传输模拟结果显示,所有波长的输出信号均聚焦在与传输方向垂直的一条直线上,验证了平场设计的正确性。

For the high-speed multi-frame camer used to capture time-resolved sequence images,the main image processing includes geometric distortion calibration,image pixel position arrangement,flat-field correction for photo-response non-uniformity between the pixels in one image and the response calibration between different sequence images.

针对用于获取具有时间分辨能力的序列图像的高速分幅相机而言,其图像处理主要包括了图形的几何形变校正、图形位置配准、一幅图像中各像元响应的平场校正及各幅图像响应一致性的校正等内容,不仅要解决每幅图像本身的问题,还要解决各幅图像间的形态对比的问题。

Design of a Flat-field EDG Wavelength Demultiplexer Using a Two Stigmatic Points Method;

两点法设计平场型EDG波分复用器件

In this situation,let students by themselves to judge the direction of scanning field and horizontal field of the coil on the base of full understanding and holding the principle of experiment.

为了增加光泵磁共振实验的设计性和研究性,本实验不提供小磁针,让学生在没有磁针的情况下,通过对实验原理的充分理解和把握,由自己通过实验来判断扫场及线圈产生的水平场的方向。