This mobile screensaver can show a lens effect.

这是一个手机屏幕保护软件，能够显示透镜效果！

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The aerodynamic lens effect of laser beam through aerodynamic window is investigated and the conclusion is provided.

研究了自由涡射流对透射激光产生的气动透镜效应，给出了计算结果。

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A laser photothermal spectrometry based on the "thermal lens effect" and the "mirage effect" is discussed with emphasis.

重点讨论了以“热透镜效应”和“蜃景效应”为基础的一类激光光热光谱法。

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Perhaps its greatest moment came in 1979 when it was the first telescope to observe a gravitational lens, an effect where a "massive" object bends electromagnetic radiation such as light around it.

BBC: Aye to the telescope

This is that a lens produces its biggest effect when it is halfway between source and observer.

ECONOMIST: Cosmology: I spy with my little gravitational lens | The

Television makers, including the TCL Corporation, have demonstrated this effect by adding a lens of sorts to the front of their TV screens.

CNN: Nintendo unveils handheld 3-D gaming system