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I don't buy apple products so I don't quite understand the implication here; how is a physical property you cannot really perceive relevant to you?

by rf15 3y ago

omegabravo 3y ago
I expect that if you're wearing polarising lenses such as sunglasses, you can't see your phone if it's held in portrait or landscape.
- josefx 3y ago
  Must resist the urge to make a joke about Apple users "holding it wrong".
  - hulitu 3y ago
    Apple learned something from SUN. Don't sell the mouse (iPhone) without the mousepad (glasses). /s
- nomel 3y ago
  Their point is that genuine Apple devices used circularly polarized filters so this isn’t an issue.
dagmx 3y ago
It’s not really anything to do with Apple, and applies to all displays. If you wear polarized lenses, like good sunglasses out in the sun, polarization angle changes visibility of your screen. It can make your screen completely illegible if not created with forethought.
- projektfu 3y ago
  My (OLED) pixel 7 has a polarized glass that is brightest at -45° and opaque at 45° from vertical with my polarized sunglasses, so that works out well. The IPS iPhone SE 2000 has a fancy polarizer that is never fully opaque in any orientation. I've seen this on other phones too. I believe it's pixel-level polarization. Some of the screens might be different on each subpixel, making the screen not-blue for example when you're wearing polarized sunglasses.
- amluto 3y ago
  As far as I know, all LCDs operate on polarized light. I’ve generally assumed that Apple puts a quarter-wave plate in front of their screen to circularly polarize the light. Without having done any math, I would expect a noticeable amount of color shifting when viewed through a linear polarizer because most waveplates are wavelength-dependent (they shift the optical path by a certain distance, which is a different amount of phase at different wavelengths). I’ve never found credible information online, but I haven’t looked that hard.
  - nomel 3y ago
    > I would expect a noticeable amount of color shifting when viewed through a linear polarizer This is infinitely better than a black screen, which is what you get with linearly polarized screens.
mogrim 3y ago
The display on my Samsung S21 (with original, unchanged screen) turns pinkish when I'm wearing polarized sunglasses - presumably it's filtering out part of the blue wavelengths. Mildly irritating when I'm driving and using it to navigate.

I don't buy apple products so I don't quite understand the implication here; how is a physical property you cannot really perceive relevant to you?

by rf15 3y ago

I don't buy apple products so I don't quite understand the implication here; how is a physical property you cannot really perceive relevant to you?

omegabravo 3y ago

I expect that if you're wearing polarising lenses such as sunglasses, you can't see your phone if it's held in portrait or landscape.

josefx 3y ago
Must resist the urge to make a joke about Apple users "holding it wrong".
- hulitu 3y ago
  Apple learned something from SUN. Don't sell the mouse (iPhone) without the mousepad (glasses). /s
nomel 3y ago
Their point is that genuine Apple devices used circularly polarized filters so this isn’t an issue.

dagmx 3y ago

It’s not really anything to do with Apple, and applies to all displays. If you wear polarized lenses, like good sunglasses out in the sun, polarization angle changes visibility of your screen. It can make your screen completely illegible if not created with forethought.

projektfu 3y ago
My (OLED) pixel 7 has a polarized glass that is brightest at -45° and opaque at 45° from vertical with my polarized sunglasses, so that works out well. The IPS iPhone SE 2000 has a fancy polarizer that is never fully opaque in any orientation. I've seen this on other phones too. I believe it's pixel-level polarization. Some of the screens might be different on each subpixel, making the screen not-blue for example when you're wearing polarized sunglasses.
amluto 3y ago
As far as I know, all LCDs operate on polarized light. I’ve generally assumed that Apple puts a quarter-wave plate in front of their screen to circularly polarize the light. Without having done any math, I would expect a noticeable amount of color shifting when viewed through a linear polarizer because most waveplates are wavelength-dependent (they shift the optical path by a certain distance, which is a different amount of phase at different wavelengths). I’ve never found credible information online, but I haven’t looked that hard.
- nomel 3y ago
  > I would expect a noticeable amount of color shifting when viewed through a linear polarizer This is infinitely better than a black screen, which is what you get with linearly polarized screens.

mogrim 3y ago

The display on my Samsung S21 (with original, unchanged screen) turns pinkish when I'm wearing polarized sunglasses - presumably it's filtering out part of the blue wavelengths. Mildly irritating when I'm driving and using it to navigate.