Chapter 3 Operation
3.9 Eyepiece Tube Operation
69
3.9.3 Eyepiece Tube Shutter Operation
B
Figure 3-23 Shutter open/close lever
TI-TD Eyepiece Tube B and TI-TERG Ergonomic
Eyepiece Tube have a built-in manual shutter
mechanism.
Pull out the shutter operation lever on the right side
of the eyepiece tube to push the shutter into the
optical path. Push in the lever to the limit to open the
shutter.
* TI-TS Eyepiece Tube B is not equipped with a
built-in shutter.
3.9.4 Bertrand Lens Operation
B
Figure 3-24 Bertrand lens operation
TI-TD Eyepiece Tube B and TI-TERG Ergonomic
Eyepiece Tube have a built-in Bertrand lens.
Move the Bertrand lens into the optical path by
moving the Bertrand lens operation lever at the lowe
front to position “B.” Rotate the Bertrand lens
focusing knob on the right to adjust the focus. This
will allow you to view the objective pupil plane (a
bright circle) and the aperture diaphragm image.
Position Optical element Description
O Blank Use to observe the microscope image with the eyepiece tube.
B Bertrand lens
Use to observe the objective pupil plane. Use the focusing knob to
adjust the focus onto the pupil plane. The Bertrand lens is used for
aperture diaphragm adjustment, as well as for centering during phase
contrast microscopy. It can also be used to observe the tip of the
manipulator above the objective, if using a manipulator.
* TI-TS Eyepiece Tube B is not equipped with a
Bertrand lens.
Bertrand lens
focusing knob
Set to position “B”
Shutter open/close lever
• Push: shutter open
• Pull: shutter close
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