#object_glass__objective  the lens or system of lenses nearest the object being viewed
  supertype:  #lens_system__lens  a transparent optical device used to converge or diverge transmitted light and to form images
  part of:  #compound_microscope  light microscope that has two converging lens systems: the objective and the eyepiece
  part of:  #optical_telescope__opticaltelescope  an astronomical telescope designed to collect and record light from cosmic sources

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