What are these reflective surfaces?

I've seen this in a few rooms now, but there are what I assume to be reflective surfaces in a these rooms. I've got quite a shard collection and I've tried each of them, but none of them seem to work here. What do you need to do to get past these areas?

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Solution 1:

In true metroidvania fashion, you need a shard called Reflector Ray. It is gotten off of a boss, I believe it was named Bathin.