lens optical length的意思|示意

When zoom lens are used for military sighting, the drift of optical center caused by the change of focus length will reduce the sighting accuracy severely.

长焦变焦镜头用于军事瞄准时，变焦过程中较大的光中心漂移，降低瞄准精度。

When the diffractive optical lens is illuminated by white light, its focal length not only relates to material dispersion and wavelength dispersion, but also to aperture factor.

在白光照射下，衍射光学透镜的焦距不仅同材料色散和波长色散有关，而且还同孔径因子有关。

In common physics optical experiment, single lens is used often as to wait for measuring lens in measuring of focal length.

在普通物理光学实验中，焦距的测量通常使用单透镜作为待测透镜。

According to the principle of optical measurement, a simple and effective method to measure the distortion of CCD camera with a largefield, short focal length lens is presented.

从光学测量角度出发，结合计算机视觉中的摄像机标定方法，解决了大视场短焦距镜头CCD摄像系统的畸变校正问题。

Used to observe the details of a simple visual objects, optical devices, is the focal length than the distance between eyes, as much out of the convergence lens.

用来观察物体细节的简单目视光学器件，是焦距比眼的明视距离小得多的会聚透镜。

Focal length is the important optical parameter of optical lens. It is valuable that methods based on Talbot effect and Moire technique are applied for measuring the long focal of lens.

焦距是透镜最重要的光学参数，应用泰伯—莫尔法测量长焦距透镜焦距具有重要的实践价值。