提供了一种手电筒，所述手电筒包括发光二极管和光伏元件。

The invention provides a flashlight. The flashlight comprises a light emitting diode (LED) and a photovoltaic element.

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在计算和通信技术中，用于显示包括正文或图象的可视信息的一种设备，通常是一个阴极射线管(CRT)，也可包括发光二极管(LED)或等离子板显示器。

In computing and communications, a device to display visual information, text or graphics, usually a CRT but may also include LED 's or plasma panels.

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光学系统100包括发光装置102和收集光学器件104，发光装置102被图示为发光二极管(LED)或在衬底上的LED阵列。

Optical system 100 includes a light emitting device 102, illustrated as a light emitting diode (LED) or LED array on a substrate, and a collection optic 104.

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