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concave lens, convex lens - A concave lens is thinner at the center; a convex lens is thicker at the center.
See also related terms for thicker.
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|Noun||1.||concave lens - a lens such that a parallel beam of light passing through it is caused to diverge or spread out|
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.