Originally posted by Digitalis The nanostructures I referred to appear on lepidopterans - specifically nocturnal moths rather than diurnal. However this discussion on insects isn't the point - the natural nanotech optical AR technique used has nevertheless caught the attention of optical designers - Aero bright is biologically inspired- but is structurally not the same: the porosity of the aerogel is used to reduce the abruptness of the density change at the air/glass interface - when two materials of differing density meet there is a reflection at the point of contact - the silica aerogels inherent low density and extreme porosity is used as a buffer to reduce this effect. The thickness of the aerogel has to be carefully tuned for maximum effect in the visible light spectrum, but when tuned correctly it would be far more effective than other AR coatings - most AR coatings can only target a specific area of the visible spectrum.
I know it is not the same structurally and functionally to insects which is why I pointed out the insect part which you brought up. All I did was state the Pentax coatings and nothing more. What I attempted to point out way back is the the FA ltd lenses and DA ltd lenses got Ghostless Coatings. I also brought up Pentax's newer coatings. Nothing I posted was inaccurate and was from Pentax sources. If you have access to Pentax information regarding Aero Bright or HD, it would be interesting to see. So would some of the older tech such as the Tak and Super Tak coatings.
Edit: On a separate note, I have wondered how a set of FA LTD would work redone with Aero Bright. It would probably give them a different character, but it would be interesting optically.