Chapter 3 Operation
3.10 Focusing Mechanism Operation
70
3.10
Focusing Mechanism Operation
3.10.1
Focus Knob Operation
ExFine
Fine
Coarse
Epi Shutter
FL Block
Refocus
Escape
INTERLO
O
B
Figure 3-25 Focus knobs and nosepiece movement
Ti-E has a motorized focusing mechanism. The
nosepiece can be moved up and down by rotating
the focus knobs on the sides of the microscope
body. The figure on the left illustrates the relationship
between the rotational direction of the focus knobs
and the vertical motion of the objective.
*
The stroke for focus adjustment is approximately
7.5 mm upward and approximately 2.5 mm
downward from the reference position.
Focus knob resolution selector
The resolution for focus knob rotation can be set to
one of the following three levels:
Setting
Distance traveled per rotation
Coarse
300
μ
m per rotation
(reference value)
*
Fine 50
μ
m per rotation
ExFine (extra fine)
6.25
μ
m per rotation
*
When set to COARSE mode, the distance
traveled by rotating a focus knob will vary
depending on how fast the knob is rotated.
Focus knob resolution, Z-axis position display
The current focus knob resolution and Z-axis
position will be displayed on the status display panel
on the front.
Display example for Z-axis position and
focus knob resolution
Z :
_
+ 1 2 4 . 2 2 5 u m
E 1 0 0
_
F i n e
Summary of Contents for Eclipse Ti-E
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