Whatis the purpose of the objective lens in a lightmicroscope

Microscope objectives can be quite complex devices using either lenses or mirrors to collect and focus light.  There are two basic designs for ultraviolet-visible-NIR capable objectives:

Objectives are defined by a number of factors, some of which include the magnification, resolving power, numerical aperture and working distance.

Whatis the job of the objective lenses

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