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The objective lens is the main microscope lens used to magnify tiny objects or examine minute specimens that are a part of larger objects that are otherwise invisible to the naked eye. Other lenses simply provide additional fine focus or illumination. Continue Reading.
A simple microscope uses a lens or set of lenses to enlarge an object through angular magnification alone, giving the viewer an erect enlarged virtual image. The use of a single convex lens or groups of lenses are found in simple magnification devices such as the magnifying glass, loupes, and eyepieces for telescopes and microscopes.