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Comment on Show HN: Homemade automated solar concentrator

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Hopefully this isn't a stupid question as I know very little about solar, but could the risk/danger be reduced with some kind of diffusion layer behind the target to "de-concentrate" the light in the event of a failure?

The risk includes targeting the wrong thing, or stepping into the beam in front of the target. A non-flammable backstop for the target is kind of a base level safety measure.

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