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diverging lenses click to hear : diverging lenses

Thicker on the edges than in the center; they cause parallel light rays emanating from an object to diverge.
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See diverging lenses in : french | spanish
plano-concave lens concave lens biconcave lens negative meniscus

plano-concave lens click to hear : plano-concave lens

Lens with one flat side and one concave side (curving inward).

concave lens click to hear : concave lens

Lens with one side curving inward; the greater the curvature, the more the light rays diverge.

biconcave lens click to hear : biconcave lens

Lens with both sides curving inward.

negative meniscus click to hear : negative meniscus

Lens where the concave side (curving inward) is more pronounced than the convex side (bulging outward).