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lagrange_james_d23dt t1_iust0mo wrote

Reply to comment by straight_up_tabled in Clear window coating could cool buildings without using energy by chrisdh79

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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