optical condenser

Noun
  1. Lens used to concentrate light on an object (synset 103091788)
    is a type of: lens, lens system, lense - a transparent optical device used to converge or diverge transmitted light and to form images
    subtypes: abbe condenser - a condenser having 2 or 3 lenses with wide aperture for use in microscopes
    same as: condenser

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