Unlike a normal lens, which compresses or changes the actual shape of a light wave through diffraction, a time lens magnifies or compresses the time of a light wave through dispersion.

不同于通常的透镜通过衍射来压缩或者改变光的形态，时间透镜通过光的弥散放大或者压缩光波的时间。

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The idea is that it gives much better quality shots when you zoom in compared to a normal camera phone, which matters because there is no room for a big zoom lens on a typical mobile.

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