The process is very simple. First, a photographic plate is coated with a light sensitive material.

这个过程非常简单，首先，把照相底片用感光材料包裹起来。

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Because only a small fraction of light reflects off the coating, the human eye and sensitive detectors see the material as black.

因为只有极小部分的光线能够反射出涂层，因此肉眼和灵敏的探测仪所观察到的这种材料依旧是黑色的。

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First, a photographic plate is coated with a light-sensitive material.

首先，把一个照相底片覆盖上感光材料。

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The goal was to substitute photoreceptors with a light-sensitive material capable of restoring photosensitivity to the retina, by easing down the retina on a layer of organic photovoltaic semiconductor.

FORBES: Artificial Retina From A Photovoltaic Polymer