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.
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 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。
In detail, the optical receiving system is mainly composed of optical receiving lens, modulating disk, cut off filter, focusing lens and pyroelectric detector.
其中，光学接收系统主要包括光学接收镜头、调制盘、截止滤光片、窄带干涉滤光片、聚焦透镜及光电转换系统等；
Tested and verified in practical optical pickup head, this lens canful fill the requirement of digital versatile disk pickup systems.
经过实际应用，证明这种结构完全能够满足高密度光盘光学头的技术要求。
Tested and verified in practical optical pickup head, this lens canful fill the requirement of digital versatile disk pickup systems.
经过实际应用，证明这种结构完全能够满足高密度光盘光学头的技术要求。
应用推荐