A method for clear up the harmful light such as scatter light and central ghost in retinal camera was introduced.

论述了眼底照相机的原理和控制杂光及鬼像的方法。

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S, 3D Light Cutting has more than 150 filed patents in high-end eyewear development, which is designed to filter various kinds of harmful light.

在美国，它已经拥有150多项备案专利，专为顾客订制能过滤各种有害的光线的高端眼镜。

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Some systems use ultraviolet light to destroy harmful organisms.

某些系统使用紫外线光照来杀灭有害有机物。

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While the ozone layer in the upper atmosphere plays an important role in limiting harmful ultraviolet light reaching the Earth's surface, low-level ozone is a pollutant that is harmful, causing respiratory problems in animals as well as well-documented cases in humans.

BBC: Invasive plant 'increases ozone pollution'

At ground level ozone is a dangerous pollutant, but at altitude it blocks the passage of harmful ultraviolet light.

ECONOMIST: Atmospheric science: Fake flakes | The

It was also a big week for lighting news as we learned that compact fluorescent light bulbs emit potentially harmful UV radiation -- another good reason to make the switch to LEDs.

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