Matte Coating for IR Plastic?
Matte Coating for IR Plastic?
(OP)
I am looking for a coating that can be applied to IR plastic that takes away the "gloss" of the material, yet does not impact the clarity of the substrate.
Any assistance is appreciated.
Thanks.
Any assistance is appreciated.
Thanks.





RE: Matte Coating for IR Plastic?
I've seen matte IR cover lenses, and they appear to have a molded-in texture, not a coating.
RE: Matte Coating for IR Plastic?
Regards
Pat
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RE: Matte Coating for IR Plastic?
If the feature sizes were controlled very carefully then, in theory one could preferetially scatter mainly the visible light. However, I think developing that surface would be a multiyear project.
Chris DeArmitt
"Knowledge has no value except that which can be gained from its application toward some worthwhile end."
Think and Grow Rich - Napoleon Hill
RE: Matte Coating for IR Plastic?
Patprimmer, yes, I understand the difference between transparent and translucent. Let's assume, for this debate, that the plastic is polycarbonate, and that it needs to also remain IR transparent, optically clear (for camera use), but opaque to visible light. ie. I don't want anyone to see through it. I do understand that having a texture on the surface removes the gloss, yet, whether it's integrally molded, or applied, is what ruins the optical clarity. This is not acceptable. I'm looking for a film, coating, polymer, or other that would allow IR transparency, optically clear, yet opaque to the naked eye, without the high gloss on IR materials I've seen to date.
Does anyone have experience with IR inks? What would happen if I mixed IR inks into matte polymers, like a urethane resin?
Are there other IR materials that I might experiment with?
Or maybe it's a combination of polarizing filters that, when combined they achieve these results?
Or maybe something else? I'm open to anything, please be creative. This is not an effort of science, it's more for art, so I'm not concerned about "following rules", so to speak, and am not concerned about cost (yet).
Thanks again, I appreciate the dialogue.
RE: Matte Coating for IR Plastic?
You need a polymer that is IR transparent. PC is.
You need to colour it, either by incorporating pigments into the resin before moulding or by coating. Before moulding is best as it cannot scratch off.
There are pigments that transmit IR but not visable. Suppliers of pigments or colour masterbatches should be able to provide detailed info.
Regards
Pat
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RE: Matte Coating for IR Plastic?
You've nailed my problem: I want true transparency, but I can't have the gloss.
RE: Matte Coating for IR Plastic?
Your only recourse is as Pat suggests, dyeing the window material with something that passes IR, but blocks visible, as is found in most TV remotes.
TTFN
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RE: Matte Coating for IR Plastic?
Dang! Can't I have it all??
So, if I were to use a dye, could I do it in a way that didn't produce a glossy surface?
RE: Matte Coating for IR Plastic?
RE: Matte Coating for IR Plastic?
Regards
Pat
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RE: Matte Coating for IR Plastic?
I don't want to call attention to it. It's an aesthetic issue, not a scientific one.
RE: Matte Coating for IR Plastic?
http://en.wikipedia.org/wiki/Purloined_Letter, make everything glossy
TTFN
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RE: Matte Coating for IR Plastic?
You can bury the lens in a hole to reduce incident light, or put it behind a grille or screen (both will degrade the image quality).
RE: Matte Coating for IR Plastic?
Chris DeArmitt
"Knowledge has no value except that which can be gained from its application toward some worthwhile end."
Think and Grow Rich - Napoleon Hill
RE: Matte Coating for IR Plastic?
TTFN
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