该公司的研究人员应用的原理是，当可见光照到光电二极管时可以产生电信号(在数码相机中研发了该项技术)。

Its researchers used photodiodes (the technology found in digital cameras) that generate an electrical signal when light strikes them.

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该公司的研究人员应用的原理是，当可见光照到光电二极管时可以产生电信号(在数码相机中研发了该项技术)。

Its researchers used photodiodes (the technology found in digital cameras) that generate an electrical signal when light strikes the m.

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由于两个二极管反向并联，所以此电路能够对任何极性的信号进行保护。

With two diodes in parallel back to back, the circuit will provide protection regardless of the signal polarity.

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