One of the primary colossal improvements made to the recently-launched
iPad 3 is the Retina display, a vibrant, extremely high-resolution
display which makes pixels as hard to spot as Waldo. However, Apple did
not address an issue which has impacted the device since day one: You
cannot use the iPad in the portrait orientation while wearing polarized
sunglasses. Bad news for all of you who planned to do some reading in
the sun by the waves this summer (avoiding glare issues by wearing your
polarized sunglasses, of course).
Below is a video from 2010 in which someone films what happens when you
look at an iPad through a pair of polarized sunglasses. This issue has
since been reproduced by quite a few iPad 3 owners. You cannot see the
screen at all. So, what can be done to solve this issue? There
aren’t any real fixes out as of right now, but one temporary workaround
is to simply use the device in the landscape orientation. The iPad’s
screen seems to be polarized vertically (vs. the 45-degree polarization
applied to most smartphones), thus causing it to have this visibility
issue in the portrait orientation.
It is quite an interesting issue which has perplexed many people on
Mac enthusiast forums. Plenty were shocked to see that their iPad was
unresponsive – or at least it appeared to be – but they all breathed
sighs of relief upon finding out it still worked, likely when they
removed their sunglasses to properly examine the issue. So, what causes
this? It’s an ‘issue’ which impacts all LCD screens in one way or the
other. So, what causes this to happen? It largely has to do with the
technology behind LCDs. Here’s a great explanation from a MacRumors forum member:
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Polarized materials act as a filter; they alter light that passes through them so only waves aligned with the filter can pass through. Most sunglasses are polarized at a 45 degree angle(/), which helps a lot with reflections of the sun from glass, water and shiny metal, as reflection tends to organize light into a vertical(|) or horizontal(-) wave, this preventing you from being blinded by glare, as you only see a small percentage of the total light from the reflection.So, it’s definitely not an iPad-specific issue, but it will definitely bug the people who will use their iPads in scenarios while wearing sunglasses.
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