<superkuh>
No vacuum, no cleanroom, etc, patterning.
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<Noxz>
Anyone look into high bandgap lenses? I think I was looking into UV based photolithography (DLP???) and came across some Thorium Oxide based radioactive camera lenses.. this was a few months ago but came up in a discussion with another student yesterday and nearly completely forgot all about it
<laintoo>
iirc the thorium gives the lens a higher refractive index?
<Noxz>
Yes, and I am trying to remember why I was searching for that property
<Noxz>
I thought maybe it was bandgap, but I completely and utterly forget why you would want a high refractive index
<Noxz>
maybe focusing
<Noxz>
large image input to a tiny image output
<Noxz>
that sounds right
<laintoo>
higher refractive index makes it "bend" the light more, yeah. which simplifies the lens design
<laintoo>
specifically it means you can use thinner lenses iirc
<Noxz>
also, a 640x360 DLP mirror is available from TI/digikey, neat
<Noxz>
I think I was more interested in projecting to a tiny area
<Noxz>
1280x720 also available
<Noxz>
for about $100 (vs 30 or so for the smaller one)
<Noxz>
could easily harvest something out of a projector and whatnot
<Noxz>
but, having something brand new with known specs/datasheet is nice
<Noxz>
easy to hack a projector :P
<Noxz>
cheaper and faster in the end
<Noxz>
but the idea exists
<Noxz>
I merely forgot about what I wanted a lens for, but that was it