Using The Microscope - OPTIKA MICROSCOPES SZM-LED1 Manual De Instrucciones

4.0 USING THE MICROSCOPE

4.1 Illumination system
The SZM-LED1 and SZM-LED2 come with an integrated illumination system with incident and trans-
mitted light. Before starting, read the section 5.3 about electrical safety precautions. Then, insert
the external power supply and use the brightness controls to turn on the LEDs and control the light
intensity.
The base is equipped with two clips that can be used to block the specimen.
4.2 Adjust interpupillary distance
Hold the right and left parts of the observation head by both hands and adjust the interpupillary dis-
tance by moving the two parts until one circle of light can be seen. If two circles appear, the interpupil-
lary distance is too big, and if two overlapped circles appear,
the interpupillary distance is too small.
4.3 Focus and regulation of the focusing tension
Put the sample to be observed on the plate and turn the zoom
to the highest magnification using the bilateral zoom knob. Try
to focus the sample using the focusing knobs.
4.4 Dioptric compensation
This compensation makes it possible for people with glasses
to adjust the microscope to their eyes and use the microscope
without glasses. Turn the zoom down to the lowest magnifica-
tion. Adjust the diopter compensation ring of the right eyepiece
tube until the image of the right eyepiece is clear and sharp.
Repeat the procedure for the left eyepiece. Then, check the
focus of the image for the whole zoom range. It should now
be perfectly parfocal (focus is always maintained during the
change of magnification).
4.5 Magnification and working distance
The total magnification varies from 1.75x to 180x depending on the eyepieces and auxiliary objec-
tives used. With the bilateral zoom knob, the user can change the magnification in a factor of 6.4 with
perfect parfocality and the image is always centred.
Select the desired magnification by adjusting the bilateral zoom knob. Change the eyepieces and/or
add an appropriate magnifying objective lens if necessary. The total magnification used can be calcu-
lated by the following equation:
Total magnification = Eyepiece magnification x Zoom magnification x Objective lens magnification
Normal working distance for the standard configuration (1x objective lens) is 95 mm.
4.6 Video capturing (optional)
Two kinds of observation heads, binocular or trinocular, are available for the SZM series. They can all
be connected to cameras via an adaptor, for digital and analogical photo and video capturing.
Before taking a picture or filming video, pull out the light path selector lever so the light will be deflect-
ed into the photo tube. At the same time, no light will enter into the right eyepiece tube for observation.
Please refer to the adaptor and camera manuals for further details.
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