A stereo microscope is used for comparing two side-by-side specimens. It consists of two regular microscopes connected together with an optical bridge. They are commonly used in fields such as forensics, where fingerprints, DNA or a sample must be compared in great detail to another. A stereo microscope provides the viewer with an upright and laterally correct image as opposed to the upside-down and backwards image that a compound microscope provides. The stereo microscope also has a greater distance in most cases between the stage and the objective, so that the specimen can be worked on or dissected while it is being viewed.The stereo microscope, by virtue of its twin eyepieces, allows you to view your specimen with both eyes and get a much more accurate view of its surface. The human visual system only perceives depth accurately when both eyes are viewing an object, so using a compound microscope with one squinting eye can produce a distorted idea of what is actually being seen.
The stereo microscope also has two magnification systems: fixed and zoom. Fixed magnification is achieved using a pair of objective lenses with a set magnification degree. Basically, the degree of magnification that you get solely depends on what your lenses are capable of.
Stereo microscopes are also capable of digital displays, as in the case of digital microscopes. Having the image projected on a high resolution monitor is very useful especially in surgeries. Microscopes have truly gone a long way. Previously, only one lens is used; today, microscopes with two optical paths are in existence.
Zoom magnification, on the other hand, allows the user to use varying degrees of magnification. Have you ever heard of the terms "zoom in" and "zoom out?" Stereoscopes with zoom magnification are capable of handling slide-prepared specimens. The versatility of a stereo zoom microscope means that you’ll never be without a way to study whatever catches your eye.
Author Name: Kathy Brasch : Nationalmicroscope.com
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