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Stereo-microscope ecoline Ryeco LAB-10 // LAB-20
Alignment and operation
Interpupillary distance
Move the two eyepiece tubes until only one circular field can be seen through the two eyepieces. lf two
circles appear the interpupillary distance is too big, and if 2 overlapped circles appear the interpupillary
distance is too small.
Focusing the microscope
Try to focus the sample at the highest magnification with the focusing knob. lf it cannot be done, adjust the
height of the microscope along the vertical post Remember to lock the lock screw and support collar after
aligning the height of the microscope.
Turn the zoom to the highest magnification. By turning the focusing knob, focus the sample until the
image is clear and sharp.
Turn the zoom (or change the objective by rotation) down to the lowest magnification. Adjust the diopter
focusing knob of the right eyepiece until the mage of the right eyepiece s clear and sharp.
Magnification
Select the desired magnification by adjusting the zoom knob. Change the eyepieces and,/or add an
appropriate magnifying objective lens if necessary
Total magnification used can be calculated by the following equation:
Total magnification = Eyepiece magnification x Zoom magnification x Normal working distance for the
standard configuration is 90mm.
For Ryeco LAB series stereomicroscope the
binocular is built together with the stereo body
to form a single piece named "Stereo-head'.
The Stereo body is the key part of the
microscope, which includes the Greenough
stereo-zoom system 1x4x or fix objective 2x and
4x. This system includes two telescopic zoom
optics working for the left and the right eyepiece
tube separately (3D = stereo view) .
With this system, the user can enjoy excellent
depth of field and stereo effect. With the help of
the precision optics from Ryf-Ryeco, perfect
parfocality can be maintained throughout the
whole zoom range.
Zoom knob in RAB-2 is located bilaterally on
both sides of the microscope and is printed with
scale showing the zoom magnification used.
Adjust this knob for changing the magnification
oft he image. if the microscope is properly
aligned, the image focus should always be
maintained when zoom magnification is
changed [parfocal].
The stereo body is mounted onto the circular
mount of the focusing carrier and is locked by
the lock screw on the left hand side of the
carrier. During the operation of the microscope,
the Lock screw should always be locked to
