Objective Lens and Eyepiece

Classification of the objective lens is based on its aberration correction capabilities, mainly chromatic aberration. The following lenses are shown from low to high capability. 

The eyepiece is used to view the real primary image formed by the objective lens. In some cases it also completes the correction of aberrations. The eyepiece allows a glass disc with an 

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The simplest microscope is the light microscope it consists of an objective lens and an eyepiece. Microscope objectives and eyepieces usually consist of complex lens systems of two or more lenses to correct for lens aberrations (Figure 4.6). The objective lens forms a real intermediate image, which is then magnified by the eyepiece. The objective lens and eyepiece are maintained at a fixed... 

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