Tip sample distance control system is the key part of scanning near field infrared microscopy.
针尖样品的距离控制系统是扫描近场红外显微镜的重要组成部分。
This formula is not limited by the aperture radius and the distance from the screen and can be used as a theory of near field optics.
推导了圆孔衍射公式，该公式不受孔径大小和到屏距离的限制，可以作为近场光学的理论。
The sound pressure at near distance under free field was computed by using the wave number integration and the basic characteristics of the radiated noise were analyzes.
利用波数积分方法仿真计算了该模型在自由场条件下的近程声场，并分析了近场辐射噪声的基本规律。
Instead, it measures the phase of the signal and USES the near-field properties to determine the position of the receiver and the distance from the transmitter.
相反，它测量该信号的相位，并使用近场的属性，以确定接收器的位置，并从发射机的距离。
The omnidirectional image reflector is one kind of image reflector with relatively small mirror but relatively large view field and capable of obtaining no-deformation near distance image.
本发明提供了一种全向图像反射镜，全向图像反射镜是一种以较小的镜面映射出较大视野的图像反射镜，并获取近距离内无畸变的图像信息。
The patterns of near field and far field are compared through experiment. Considering the fact, an experiment is made on the testing error caused by distance error and frequency drift.
考虑到实际应用，对距离标定误差和频率漂移引起的测试误差进行了实验研究。
The relationships between images of near and far objects with camera lens and field of view and object distance and the image ratio are researched.
根据光学透镜成像原理，推导近端和远端物像与相机焦距、视角和物距的关系式及其像比，借此控制相机视图中远近两端物像的形状反差。
A general diffraction formula for circular apertures is derived. This formula is not limited by the aperture radius and the distance from the screen and can be used as a theory of near field optics.
推导了圆孔衍射公式，该公式不受孔径大小和到屏距离的限制，可以作为近场光学的理论。
A general diffraction formula for circular apertures is derived. This formula is not limited by the aperture radius and the distance from the screen and can be used as a theory of near field optics.
推导了圆孔衍射公式，该公式不受孔径大小和到屏距离的限制，可以作为近场光学的理论。
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