Hello. Does anybody know if there companies making antireflective coatings for screen protectors for phones, camera‘s and laptops? All I can find is just matt surface protectors. There is a lot misleading listings on Ebay saying that their screen protectors are antireflective but actually are just matt surfaces which actually are worse than glossy cover because they produce dull colors and reduce contrast. If you ever seen for example paintings, photo prints or just wood texture with glossy and matt varnish you will imidiatelly notice that glossy surface produces much more vibrant colors and contrast. Same goes for display covers especially as matt film gets further away from pixels it becomes more blurry. Of course glossy display needs to be looked from right angle to avoid seeing highlights from behind. Matt covers can seem to remove sharp bright reflections but all they do is merelly scatter light evenly in all directions.
Single AR coating or better multi layer coating has great advantages over matt cover. Uncoated glass reflects 4% of incomming light and further 4% when passing from glass to air due to internal reflection. Current quality AR multicoatings can reduce these reflections to just 1% in most of the visible spectrum. Ideally both glass sides should be coated but for screen external side will make bigger difference.
Knowing this I don‘t understand why even premium phones, laptops and camera covers don‘t use them, well at least when looking externally. Sure it can add up to manufacturing cost but it‘s totally worth having it on screens, camera and light covers.
I was a bit lucky to find Lumia 640 phone which seems to have at least single layer coating with purplish reflection. Better quality multicoatings have several layers for each wavelengh and most often they appear to have only slight viridian reflection.
Imagine how much light is lost due to reflection if there are multiple uncoated glass surfaces. Reflecting light can also contaminate image or in other words wash out darker colors.
It might be possible to get coating in optics facilities but there are limitations since surface needs to be clean and covers seem to have oleophobic coatings what might be a problem, but maybe they can be added later as well with hardening coatings (some AR materials are hard themselves as MgF2 or sapphire just too thin). Moreover it‘s going to be very costly and if possible at all. So it be be easier to produce AR coated stick on covers for phones, laptops, camera external/internal glass covers, filters and light sources.
Ngomad seems to be only company making 6 layer multicoating screen protectors but currently they make them only for Iphones, there are better specs phones such Huawei or Sony which should also have them.
Single AR coating or better multi layer coating has great advantages over matt cover. Uncoated glass reflects 4% of incomming light and further 4% when passing from glass to air due to internal reflection. Current quality AR multicoatings can reduce these reflections to just 1% in most of the visible spectrum. Ideally both glass sides should be coated but for screen external side will make bigger difference.
Knowing this I don‘t understand why even premium phones, laptops and camera covers don‘t use them, well at least when looking externally. Sure it can add up to manufacturing cost but it‘s totally worth having it on screens, camera and light covers.
I was a bit lucky to find Lumia 640 phone which seems to have at least single layer coating with purplish reflection. Better quality multicoatings have several layers for each wavelengh and most often they appear to have only slight viridian reflection.
Imagine how much light is lost due to reflection if there are multiple uncoated glass surfaces. Reflecting light can also contaminate image or in other words wash out darker colors.
It might be possible to get coating in optics facilities but there are limitations since surface needs to be clean and covers seem to have oleophobic coatings what might be a problem, but maybe they can be added later as well with hardening coatings (some AR materials are hard themselves as MgF2 or sapphire just too thin). Moreover it‘s going to be very costly and if possible at all. So it be be easier to produce AR coated stick on covers for phones, laptops, camera external/internal glass covers, filters and light sources.
Ngomad seems to be only company making 6 layer multicoating screen protectors but currently they make them only for Iphones, there are better specs phones such Huawei or Sony which should also have them.
It helps let in more light, reduce ghosting halo in images around bright light and also is more scratch resistant almost like sapphire crystal which is hardest mineral used in displays. I'm getting it to replace camera protector for Huawei P20 PRO and later also P50 PRO. There are no yet phone screen protectors but Samsung Galaxy Watch 4 screen will use even better Gorilla DX+ crystal glass.