How can my cheap sunglasses be polarized?

Jan 27 2010




When I first bought my sunglasses (from my school student store), it had a “polarized” sticker on it. I tested them to see if they were polarized by putting them on and looking at my laptop’s LCD screen. When i tilted my head, the screen turned black, so i know these sunglasses must be polarzed.

My question is, how in the world can my sunglasses be polarzed when I purchased them for only $20-$30? Do you think it’s because the quality of polarization is not very good?

Thanks.

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One response so far

  1. TMH
    on 28 Jan 2010 at 12:34 am

    The polarization process does not cost very much to perform on lenses. You are usually paying for the brand name when you see high priced polarized sunglasses.

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