7 segment led display- glass covering necessary?

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before buy 7 segment led display wondering if visible without reflective glass in front of digital clocks have (or display have on it?).  display in kitchen receives sunlight.
the display here: http://search.digikey.com/us/en/products/lds-ca12ri/67-1488-nd/252597
if need glass covering, that?
thanks.

glass useless. need suitable filter.


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