The reason we want to be able to do this is so that we can better scan the collector with light being transmitted directly through the backside rather than shining light through the top and reflecting it back up with a mirror.

• 我们想这么做的原因是想要用从背部过来的透射光而不是从顶上照过来并被镜子反射回去的光来更好的扫描收集器。