Researchers at HP Labs recently managed to etch a pattern into a flat piece of silicon so that it could focus light "like a spoon", says Raymond Beausoleil of HP Labs.
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它那柔和、明亮的光线可以聚焦而用作导向灯,也能创造出像日光和月光那样的效果。
Its soft, Brilliant light enabled it to be focused for spotlighting and to create effects such as sunlight and moonlight.