Key Features of a Stereo Microscope

Your choice of microscope should depend on your specific research needs. Considerations include whether a large zoom range, handling, searching or documentation are part of your workflow process as well as whether or not camera attachment is necessary for documentation.

Modern stereo microscopes come equipped with various optical accessories. Zoom Microscope https://advancetech.co.in/product/tokii-sm0745/ and pincushion distortion are among the common optical defects seen.

Optical System

Stereo microscopes differ from compound microscopes in that they use two optical paths through objective and eyepiece lenses to give each eye different viewing angles; then our brain fuses these images together into one three-dimensional image of the specimen.

The system's clear image makes this microscope ideal for dissecting and sorting samples as well as documenting results, with effortless accessories like beamsplitters, coaxial episcopic illuminators, photo or digital video intermediate tubes, drawing tubes and eyelevel risers easily installed via its ergonomic design.

Reducing magnification factor and altering attachment lenses may alter resolving power and working distance; however, these variations are minor when compared with those resulting from changing magnification factor because aperture diameter remains constant in an objective lens.

Magnification

Magnification in a stereo microscope is determined by its objective lenses and eyepieces, with magnification that ranges from 10x-50x power depending on their fixed or adjustable nature. High quality stereo microscopes come equipped with either zoom lens systems or rotating drums containing Galilean telescopes that can be added or removed from their optical path to increase or decrease overall magnification as desired; such systems often include detents or click stops at intervals throughout its zoom range for quick return to desired magnification levels.

Common main objective (CMO) stereomicroscopes often exhibit some degree of perspective distortion when using higher magnification eyepieces; however, specimens with complex or rounded surfaces usually do not demonstrate this artifact.

Working Distance

A stereo microscope's working distance is determined by its optical system, magnification setting and any additional attachment lenses installed. Additional lenses have an impactful on both its resolving power and depth of field; in inverse proportion to their magnification factor squared.

Some microscopes feature top lights (Transmitted Illumination) that illuminate specimens by shining down onto them and reflecting off transparent objects, often known as dissecting microscopes, such as slides, Petri dishes or translucent specimens. This type of stereo microscope can be used for dissecting.

Common stereomicroscope designs feature dual objective lenses operating along parallel axes to produce a stereographic image, eliminating convergence artifacts present in older single objective designs that could not produce true stereoscopic effects.

Depth of Field

Like human eyes, microscope optics combine images from two distinct viewing angles into a three-dimensional image that makes for effortless dissecting, sorting and examining of solid specimens.

Stereo microscopes typically provide magnification up to 50x; more powerful objective lenses may increase this value at the expense of depth of field.

Illumination is another integral element of stereo microscopes. Proper illumination illuminates specimens uniformly, reduces shadowing and brings out true colors; plus it helps avoid eyestrain which could result in muscle-skeletal issues.

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Resolving power of a stereo microscope is directly proportional to its working distance and depth of field, although users can use additional attachment lenses to either decrease or increase overall magnification of their stereo microscope.

Stereo microscopes typically feature an optical system composed of a common main objective (CMO), two eyepieces, and sometimes rotating multiple lens turrets or zoom lenses that enable continuous magnification adjustments.

Other models utilize a Galilean system with an interactive rotating drum and pair sets of objectives that can be added or removed from the optical pathway as desired. Positive detentes in the tube housing serve as click stops to ensure that each objective mount is properly aligned and in focus before being adjusted by users.