Table of Contents
Advertisement
10. Diopter adjustment
Perform diopter adjustment in the following way. The adjustment corrects dioptric difference of the left and right eyes,
facilitates observation with both eyes, and reduces defocusing when changing the objectives.
For TE2000-E, TE2000-U
Turn the "photo-mask dial" on the front of the microscope counterclockwise to place the photo-mask in the optical path.
Looking into the right eyepiece with your right eye, turn the diopter adjustment ring on the right eyepiece to focus on the
double crosshairs.
Then, looking into the left eyepiece with your left eye, turn the diopter adjustment ring on the left eyepiece to focus on the
double crosshairs.
For TE2000-S
Since there is no photo-mask on TE2000-S, the diopter adjustment cannot be performed in the same way as TE2000-U
which uses double crosshairs on the photo-mask.
1)
Perform steps 1 to 4 on bright field microscopy described on page 25 so that the specimen is in focus with 10x
objective.
2)
Turn the diopter adjustment rings of both eyepieces to align the engraved line on each diopter adjustment ring with
the rim of the objective outer ring. (This sets the diopter adjustment to the "0" position.)
3)
Bring the 40x objective in the optical path.
4)
Look into the right eyepiece with your right eye. Turn the focus knob to focus on the specimen.
5)
Bring the 4x or 10x objective in the optical path.
6)
Look into the right eyepiece with your right eye, turn the diopter adjustment ring on the right eyepiece to focus on
the specimen. (Do not touch the focus knob at this time.)
7)
Repeat steps 3) to 6) twice.
8)
Do the same for the left eyepiece. (Perform steps 3) to 6) three times substituting the word "right" with the word
"left".)
11. Focusing module
• • • •
When using the TE2000-U/TE2000-S:
Never turn the focus knobs on the left and right sides of the microscope in opposite directions at the same time, as
doing so can result in damage to the microscope.
Turning the coarse focus knob as far as it will go and then attempting to turn it further will result in damage to the
microscope. Never use undue force to turn the knob.
The relationship between rotation of the knobs and movement of the objective is shown below. The fine/coarse
focus knobs provide a 7-mm upward and 3-mm downward strokes from the reference position.
See the below chart for the relationship between the rotation of the focus knobs and the amount of movement.
Amount of rotation
One graduation of fine focus knob
One rotation of fine focus knob
One rotation of coarse focus knob
Vertical movement of
objective.
1 μm
0.1 mm
4.9 mm
III. Operation of each part
47
Hide quick links:
Advertisement
Table of Contents
