converging lens

noun, Optics.

a lens that converts parallel rays of light to convergent rays and produces a real image.

Also called positive lens.

Compare diverging lens.

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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He has permitted a pencil of sun rays to pass through a converging lens upon a cell containing a fragment of an aquatic plant.

Scientific American Supplement, No. 430, March 29, 1884 Various

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