objective lens

基本解释

The clear aperture of a telescope is the diameter of the objective lens or primary mirror specified in either inches or millimeters (mm).
望远镜的孔径显然就是物镜或者主反射镜的直径，一般用英寸或者毫米(mm)来表示。
So this is very, very low-cost to buy, and actually, the objective lens in the microscope, the very powerful lens we use to image the atoms, is also from a CD player.
购买的成本是非常，非常低的，而实际上，显微镜上的物镜，我们用来观看原子图像的非常强大的镜头，也都从CD播放机拆下来的。
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。
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This perspective has allowed me to view our own system through a more objective lens, and what I see is a country that increasingly drives away its own businesses and paralyzes its most innovative companies.
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