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lagrange_james_d23dt t1_iusfjmy wrote

Somebody else kind of mentioned it, but this isn’t really new technology (at least not the coating). That is a typical band pass filter that blocks UV and IR, but allows the vis to pass. The siloxane final layer is interesting, and is likely for durability. Most band passes that my work has used/developed just end in SiO2 (which can also act as a hard coat). I think the biggest draw is the quantum computed design, but I think the traditionally designed thin film stacks perform well enough- the issue is actually manufacturing limitations: uniformity of the coating over large pieces of glass, large chambers needed to hold the glass, many layers needed lead to high cost, etc.

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straight_up_tabled t1_iusrqxc wrote

Actually very old and very widely distributed product. Ever heard of infrared window tint? I had some installed in 2005.

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lagrange_james_d23dt t1_iust0mo wrote

A tint is different than a band pass in that it is usually either a polarizer (like sunglasses) or a neutral density filter in that it mutes light across the entire spectrum. Band passes look visibly clear, as all visible light would come through, but blocks the shorter (UV) and longer (IR) wavelengths. But agreed, the technology has been around for a while. I’m not sure when they were first designed, but I’ve produced anti-reflective coatings on chambers that are as old as the 1960s.

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straight_up_tabled t1_iustd16 wrote

Some people call it tint paper. Same shit. Stop trying to call It something fancy no one has heard of before because you are misleading people.

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lagrange_james_d23dt t1_iustk41 wrote

I’m a coating engineer- I’m not just making it up.

Edit: and I’m agreeing that the technology exists already, but I’m saying it’s different (and performs different) from car tints.

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Zoidbergslicense t1_iuucrus wrote

A glazer needs to know- What surface of the glass is this designed to go on?

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lagrange_james_d23dt t1_iuufzff wrote

I would think the exterior side (based on the hard coat at the end), but I’ve seen it either way for similar optics.

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straight_up_tabled t1_iustscs wrote

You coat a PET film, no? That’s tint paper.

Also, are you claiming this is new tech?

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