Olympus IX73 - Focusing Block Adjustments

17
IX73
4-2 Focusing Block
} The fine adjustment knob is designed detachable in order to
prevent interference between the knob and the operator’s hand
manipulating the X- and Y-axis knobs.
· Loosen the clamping screw
c
using the Allen screwdriver provided
with the microscope and remove the fine adjustment knob.
· After detaching, the fine adjustment knob is hollowed to facilitate
manipulation with a fingertip.
} Rotating the coarse or fine focus adjustment knob
a
toward the
front (in the direction of the arrow) raises the objective and toward
the rear (opposite direction) lowers the objective.
} The pre-focusing lever prevents collision between the specimen
and objective and simplifies the focusing operation.
After bringing the specimen into approximate focus with the coarse
adjustment knob, turn the pre-focusing lever
d
in the direction of the
arrow to lock it. Hereafter, the upper limit of the coarse adjustment will
be limited at the position where the lever is locked.
When bringing a specimen in focus, approximate focus can be ob-
tained by simply raising the coarse adjustment to the stop position
so all you have to do additionally is control the fine adjustment knob.
} The focusing function using the fine adjustment knob is not limited.
} Always use the rotation tension adjustment ring
b
to control the
rotation tension of the coarse adjustment knob.
The tension of the coarse adjustment knob has been pre-adjusted
to optimum tension, but this can be changed as required. Turn the
rotation tension adjustment ring
b
in the direction of the arrow to
decrease the knob’s tension and in the opposite direction to increase it.
4
Pre-focusing Lever
3
Detaching the Fine Adjustment Knob
2
Adjusting the Coarse Adjustment Knob Tension
1
Rotation Direction of the Coarse/Fine Adjustment Knobs
c
a
b
d