如果物镜与光盘之间的距离短于物镜的焦距，柱面透镜就会使在光电探测器阵列上的成像变成椭圆影像。
If the objective lens is closer to the compact disk than the focal length of the object lens then the cylindrical lens creates an elliptical image on the photodetector array.
如果物镜与光盘之间的距离短于物镜的焦距，柱面透镜就会使在光电探测器阵列上的成像变成椭圆影像。
If the objective lens is closer to the compact disk than the focal length of the object lens, then the cylindrical lens creates an elliptical image on the photodetector array.
如果物镜与光盘之间的距离长于物镜的焦距，柱面透镜也会使在光电探测器阵列上的成像变成椭圆影像。
If the objective lens is further away from the compact disk than the focal length of the object lens then the cylindrical lens again creates an elliptical image on the photodetector array.
用计算机模拟和光学传递函数数值计算，分析了采用不同环形透镜及探测器对系统成像特性的影响。
By using computer simulation and numerical computation of OTF, the image property is analyzed for the case of different annular lenses and detector in confocal scanning system.
接收部分由接收透镜和光电探测器组成。
The receiving part is composed of a receiving lens and a photo detector (PD).
利用测量光线的多次反射和组合透镜的方法使测量系统的分辨率相对于用探测器直接探测分辨率提高了8倍。
The sensitivity of the straightness measurement can be improved by a factor of 8 compared with the movement of the detector itself via using multi-reflection and combination lenses.
文中着重论述了光纤与探测器间的光耦合问题，并就一组合透镜耦合方案作了具体设计计算。
In the article, the optical coupling between the optical fibre and detector is stressed and the coupling scheme of a combined lens is designed and calculated concretely.
文中着重论述了光纤与探测器间的光耦合问题，并就一组合透镜耦合方案作了具体设计计算。
In the article, the optical coupling between the optical fibre and detector is stressed and the coupling scheme of a combined lens is designed and calculated concretely.
应用推荐