SM-4 Series Stereo Microscope
AmScope Proprietary Page 15 of 37
2.4.5 Focusing the distance between your eyes.
(The interpupillary distance, the distance between your eye pupils.)
With both eyes open, look into the eyepieces. Adjust the interpupillary
distance by holding the eyetubes and rotating the tubes either towards or
away from each other until only one circle of light is seen by both eyes.
2.4.6 Using a Barlow Lens.
The SM-4 series microscopes have a standard working distance of 4”
(101.6mm). Barlow lenses increase or decrease working distance and
magnification to achieve the desired field of view. These lenses screw
directly onto the objective lens housing.
The SM series microscopes have two standard Barlow Lens options,
the 0.5X and the 2.0X.
The 0.5X Barlow Lens will cut magnification in half,
down to a minimum of 2.0X. The 0.5X Barlow Lens can
have a maximum working distance of 7 inches
(177.8mm).
The 2.0X Barlow Lens doubles magnification and cuts the
working distance down to 1.5 inches (38.1mm).
In practical terms, if you are looking at a coin, you might see the entire coin
with a 0.5X Barlow Lens and a small section of the coin and great detail with
the 2.0X Barlow Lens.
To Next Page
Loading...
