convex lens definition, convex lens meaning | English dictionary

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convex

adj

1 curving or bulging outwards

2 (Physics) having one or two surfaces curved or ground in the shape of a section of the exterior of a sphere, paraboloid, ellipsoid, etc.
a convex lens

3 (Maths) (of a polygon) containing no interior angle greater than 180°
vb

4    tr   to make convex,   (Compare)      →   concave
     (C16: from Latin convexus vaulted, rounded)
♦   convexly      adv

concavo-convex
adj

1 having one side concave and the other side convex

2 (of a lens) having a concave face with greater curvature than the convex face
Compare → convexo-concave → 2

convexo-convex
adj (esp. of a lens) having both sides convex; biconvex

plano-convex
adj (of a lens) having one side convex and the other side plane

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