Category talk:Lenses

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I have moved photographic lenses into their own category, and moved other types of lens from category:optics and category:optical devices into this category.--Srleffler 18:20, 22 October 2005 (UTC)

[edit] help

I was just wondering some things...

what is a lens called that is used specifically for heating objects? Is that a practical use? Are there manufacturers of such lenses?

thanks :)

BriEnBest 22:09, 25 October 2007 (UTC)

A burning-glass, perhaps?--Srleffler 04:10, 26 October 2007 (UTC)