光线的方向会根据对象的位置发生反射。
The direction of light reflected from an object depends on its alignment.
阵列中液晶的位置控制反射的光线的方向。
The alignment of the liquid crystals in the array controls the direction in which light is reflected from them.
这意味着，在焦平面被移动的情况下，仍可以确定光线的方向。
This in turn means that it is possible to determine where the ray would strike if the focal plane were moved.
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