object lens

基本解釋

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.
如果物鏡與光盤之間的距離短于物鏡的焦距，柱面透鏡就會使在光電探測器陣列上的成像變成橢圓影像。
We must design the ratio of the source beam size and aperture of object lens reasonably to assure energy matching ratio (EMR) and to achieve smaller size of focus point and reasonable focus depth.
必須合理地確定光源的光束口徑與光盤物鏡孔徑比值，才能保證其光能量耦合效率，并獲得較小的光斑尺寸和合理的焦深。
The optical writing object lens of the laser direct writing device must be focused in spots by a focusing-servo mechanism.
在激光直接寫入設(shè)備中需要有高分辨力的調(diào)焦伺服機(jī)構(gòu)對光刻物鏡進(jìn)行調(diào)焦伺服。

Because gravity pulls on light as well as matter, when light passes by a heavy object it bends as though it is passing through a lens.
ECONOMIST: Cosmology