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Chapter 3 Individual Operations
3.3 Optical Path Selection (for Trinocular Eyepiece Tube)
33
3.3
Optical Path Selection (for Trinocular Eyepiece Tube)
3.3.1
Light Distribution
With the trinocular eyepiece tube, the optical path
selection lever allows the light distribution to the
binocular section and vertical tube section.
Light distribution (%)
Optical path
selection lever
position
Binocular
section
Vertical tube
section
Pushed in
100
0
Pulled out one notch
20
80
Pulled out two notches
0
100
3.3.2
Vertical Tube Adapter
The TV vertical tube adapter or the TV vertical tube
adapter 0.55X can be mounted on the vertical tube
section of the trinocular eyepiece tube. To mount
the adapter, remove the cap from the vertical tube
section of the trinocular eyepiece tube, insert the
vertical tube adapter, and fix it with three screws
on the vertical tube section with the attached tool.
3.3.3
Disabling the Clicking of the Optical Path Selection Lever
The trinocular eyepiece tube has a “NO CLICK”
switch on the tube attaching surface. Slide this
switch in the direction of the arrow with the tip of a
pointed tool to disable clicking for the optical path
switching lever. Set the switch to this position if
you need to eliminate the slight vibrations resulting
from the clicking action.
Optical path
selection lever
TV vertical tube
adapter
This picture shows the TV vertical tube
adapter and C mount adapter.