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Home Training Tools Ltd. 2012
Page 3 of 8
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Description of Components
1.
Eyepieces:
This is the part of the
microscope you look through. It is inclined at
a 30º angle for comfortable viewing.
Premium 20mm lenses magnify 10x and
offer high eye relief for use with glasses.
2.
Rotating head:
The head rotates 360º so
users may locate the most comfortable
position and lock the eyepiece in place. The
MI-6000BIN model has a
binocular
head,
which means there are two eyepieces. See
page 6 for descriptions of the different heads
on the MI-6000TRI, 6000DHD, and
6000STD models.
3.
Arm:
The arm supports the head and
nosepiece and is the best “handle” for
picking up and moving the microscope.
4.
Nosepiece:
Also called the “objective
turret,” it holds the objective lenses and
rotates 360º. Change magnification by
turning it until the lens you want to use
“clicks” into place.
5.
Plan objective lenses:
These are the
lenses closest to the specimen. The DIN
plan objectives are 4x, 10x, 40x, and 100x,
which multiply with the 10x eyepiece lens to
provide 40x, 100x, 400x, and 1000x
magnification levels. The shortest lens offers
the lowest magnification level, while the
longest offers the highest. The objectives
have the following characteristics:
•
They are
plan –
meaning they are
more complex than other objectives
and flatten the image so virtually the
entire field of view is in focus at
once.
•
They are
DIN
– they meet an
international standard of optical
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 slide below the
objective lenses. It moves up and down
when you turn the focus knobs, allowing you
to control the distance between the
specimen and the lens. The 132 x 140 mm
stage has an integrated mechanical stage
with 50 mm y and (front/back) 75 mm x
(right/left) movement. The x-y coaxial stage
adjustment controls allow precise movement
of the slide for optimal viewing.
7.
1.25 N.A. Abbe condenser:
This movable
lens in the center of the stage condenses
and focuses the light rays from the
illuminator to provide better image
resolution. Rotate the condenser knob to
raise or lower the lens.
8.
Iris diaphragm
: The diaphragm controls the
amount of light coming through the
specimen in order to provide the best
contrast for the objective lens. It is fully
adjustable by moving the lever below the
stage. Generally, you need less light on
lower power and more light on higher power.
9.
Filter holder:
Your microscope comes with
blue, green, and yellow filters that go in the
filter holder beneath the iris diaphragm. The
filter absorbs some of the light from the
illuminator and makes the light change color
slightly. Though generally unnecessary, this
will enhance the image of your specimen, in
some cases.
10.
Coarse focus:
The low-position large
coarse focus knob raises or lowers the stage
until the image is in focus.
Condenser focus
knob
X Front/Back
stage control
Y Right/Left
stage control
Iris diaphragm
adjustment
Condenser
centering knobs
