Monday, September 16, 2013

mirror lens

This shows how to get a lens effect from mirrors, they're shown as straight lines but they would actually be slightly concave so rays other than the 3 I show would also focus on the point. Also there would be more mirrors similar to these between the ones shown to get better coverage of the incoming light.
It's a lot like a fresnel lens except instead of thicknesses of transparent medium you use mirrors to change the direction of the light.

the big advantage is that it can scale up very large which is expensive for a fresnel lens and if the reflectors were made out of say, aluminum, it could reflect a wider range of frequencies than just visible light... maybe the arrangement could even be used to direct air or exhaust

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