Why can't we get synthetic sapphire eyeglasses? Abbe number 72.2 (!!!!) and high index of refraction.
The way I look at that, wrt UV, my eyes are still no worse off than people who don't need glasses.
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You could do a coating though if it doesn't affect the optical properties badly.
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So the TiO2 thin film coating I put on my glasses b/c it annoys me when they fog up apparently blocks everything below UVA.
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A film that blocks everything below ~480nm would probably actually help a lot with chromatic aberration.
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Don't you mean ~415nm? 445nm for instance is what InGaN blue LEDs emit...
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No, I specifically mean getting rid of the awful blue-led light that spatially diverges so much from everything else. :-)
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The worst is in headlights. Every car with those f*%&ing things looks like a cop in rear-view.
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Oh, so notching that out is *desired*? Heh. (Also those aren't blue LEDs, but HID Xenon bulbs... the peak is around 475nm or so).
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I think I've seen LEDs too now, but yeah, the xenon ones definitely do it too.
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they wear sunglasses sometimes though and you'll need two glasses in that case, I mean
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BTW, know anyone who does milling/polishing of these types of materials who might could give me a quote on making such lenses?
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A web search brings up some names, but when the ad copy mentions ITAR certs, I'm guessing not cheap:http://www.guildoptics.com
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