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Description of Components
1. Eyepiece: This is the part of the microscope
you look through. It is inclined at a 45º angle
for comfortable viewing. It contains a lens that
magnifies 10x.
2. Rotating head: The head rotates 360º so
multiple users can look in the eyepiece
comfortably without moving the microscope
itself.
3. Arm: The arm not only supports the head and
nosepiece but it is also the best "handle" for
picking up and moving the microscope.
4. Nosepiece: This is also called the "objective
turret."
It holds the objective lenses and
rotates 360º. You can change magnification by
turning it until the lens you want to use "clicks"
into place.
5.
Objective Lenses: These are the lenses
closest
to
the
objectives are 4x, 10x, and 40x, which multiply
with the 10x eyepiece lens to provide
magnification levels of 40x, 100x, and 400x.
The 4100LXL model also includes a 100x
objective for 1000x magnification. The shortest
lens has the lowest magnification level, while
the longest has the highest. The objectives
have the following characteristics:
•
They are DIN – they meet an
international
quality.
•
They are achromatic – they help
prevent color distortion.
•
They are parcentered – if you center
your slide using one objective, it will
still be centered when you move to
another objective.
•
They are parfocal – if you focus your
specimen using one objective, it will
stay coarsely focused when you move
to another objective (you will still have
to adjust the fine focus).
•
The 40x and 100x objectives are
retractable – the tip containing the lens
is spring-loaded to prevent damage to
the objective or slide.
•
The 100x objective is oil immersion –
This is described on page 5.
6.
Stage: The stage is the platform that
supports
the
specimen
objective lenses. It moves up and down when
© Home Training Tools Ltd. 2012
specimen.
The
standard
standard
of
optical
slide
below
you turn the focus knobs, allowing you to
control the distance between the slide and the
lens. The MI-4100LXL, 4100LMS, 4100LDH,
and 4100LBH models have an integrated
mechanical stage that allows for precision
adjustment of the specimen slide.
7. Stage stop: This is a screw with a lock nut
located between the stage and the arm of the
microscope. It prevents the stage from coming
too far up and grinding against the objective
lenses. It is also called a "safety rack stop,"
and is pre-adjusted by the manufacturer.
Instructions for readjusting it manually are on
page 6.
8.
Stage clips: The stage clips hold the
microscope slide in place. Pressing on the end
closest to the arm of the scope will lift up the
other end allowing you to place your slide
underneath. There is a single stage clip on the
MI-4100LXL,
4100LBH models that is easily adjusted with a
lever.
9.
Condenser: The MI-4100LST has a fixed
condenser and the other models have an
adjustable condenser with spiral focusing.
10.
Diaphragm: The diaphragm controls the
amount of light coming through the specimen
in order to provide optimum resolution for the
objective lens. The MI-4100LST has a rotating
disc diaphragm under the stage with various-
sized holes. The other models have an
adjustable iris diaphragm.
11. Coarse focus: The large coarse focus knob is
used to raise or lower the stage until the image
is in focus. The focus mechanism uses a slip
clutch to prevent damage to the gears.
12. Fine focus: The smaller fine focus knob
allows more precise image resolving after the
image has been brought into focus with the
coarse focus knob.
13. Illuminator:
necessary light underneath the stage. It
contains a long-lasting LED bulb. In addition to
an on/off switch, the light source also features
a variable intensity control on one side of the
base.
Installing a Mechanical Stage
The MI-4100LST model comes pre-drilled for
the addition of an optional mechanical stage (our
the
item MI-MESTAGE). This added feature gives
precise slide control for optimal viewing.
Page 3 of 8
4100LMS,
4100LDH,
The
illuminator
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