Navi screen with polarized sunglasses

[mmkeil]

Wondering if anyone has experience with a solution for problems seeing the navi screen with polarized sunglasses. Is there a film (such as NuVue) that helps with this.

 

[jzwolak]

LCD screens are by their nature polarized. Light cannot be unpolarized... at least not without some pretty extreme measures: https://physics.stackexchange.com/questions/154105/can-polarized-light-be-unpolarized-again

Unpolarized light is really a collection of photons where each photon is polarized in some random direction relative to the others (as in, it's polarized state doesn't depend on the others). Polarized sunglasses absorb photons polarized in a certain direction, rotate the glasses and the direction changes... try this... it's pretty cool. All photons are polarized, it's a property of photons.

Polarized light is a bunch of photons all polarized in the same direction. I don't know of any easy way to randomize this so that the light is unpolarized... certainly it's not as easy as applying a film/filter.

iPhones and some Android phones get around this LCD polarization problem by

 

[Grumpy1950]

Back when autofocus became prevalent in photography (even before digital), there was a problem with linear polarizing filters disabling the autofocus when they were used to cut glare in the photo. The solution was to use a circular polarizer. I don't know if anyone makes sunglasses with circular polarizing lenses, but it should be easy enough to research.

 

[garrettkim]

I have lost my key in the woods 9 miles from nowhere. There's no cell or Internet service in the location. It's 4 hours to the nearest dealer and it will have to be towed . Anyone have any ideas? Key has been cut from the vin but needs programmed. Taking any advice