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Interesting - this is what Canon have been doing for some time using a different process.
Its what gave rise to the DragonFly Imaging project allowing astronomers to go many levels of magnitude deeper by reducing the internal optical noise of their system.
Problem was, the process Canon used wasnt scalable in size up to large telescope mirrors and was limited to small lenses and hence the DragonFly array.
This now hopefully means potentially any large mirror can be made antireflective - if so that is going to make things very interesting.
Wavytome - Apparently its self cleaning - the gaps left between the tiny conical structures are all subwavelength in size
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