Olympus IX81 User Manual download pdf (Page 24)

Fig. 18

Fig. 19

Fig. 20

Using Eyepiece Micrometer Disks

(Fig. 18)

Eyepiece micrometer disks can be inserted into the WHN10X-H

(or WHN10X) eyepieces.

Use 24 mm dia. x 1.5 mm micrometer disks.

Following Fig. 18, turn the built-in micrometer mounting frame ² counter-

clockwise to remove it from the eyepiece and place a micrometer disk @

into the mounting frame so that the surface with the model indication

faces downward.

Re-attach the micrometer mounting frame in the original position.

(Fig. 19)

Slide the light path selector knob 1 to select the desired light path.

}Usually, set the selector knob to the intermediate position. With dark speci-

mens, push the knob in. If additional light is needed for TV observation or

photomicrography, pull the knob out.

Light Path

Selector Position

Symbol Light Path Ratio Application

Pushed in Binocular 100% Observation of dark

specimens

Intermediate Binocular 20%

TV/photo 80%

Observation of

bright specimens,

photomicrography,

TV observation

Pulled out TV/photo 100% Photomicrography,

TV observation

Using the CT Turret (U-BI90CT Only)

(Fig. 20)

1. To use the CT turret 1, rotate the knurled ring with a finger to select the

setting corresponding to the indication (0-CT-0-S). (Set the magnification

selector knob on the IX81 microscope frame to 1X.)

Turret

Indication

Application

0 (2 positions) Nothing is engaged in the light path (Normal observation)

The CT (Centering Telescope) lens is engaged in the light

path and the objective exit pupil can be observed.

Used when centering the ring slit in phase contrast ob-

servation or adjusting the aperture iris diaphragm.

Shield plate is engaged in the light path to block extraneous

light from entering through the eyepieces. Used in photomicro-

graphy to prevent extraneous light from affecting the exposure.

2. To bring the exit pupil image of the objective into focus when using the

CT lens, rotate the focusing ring 2 to adjust.

Selecting the Light Path of Observation

Tube (U-TR30H-2 Only)

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Olympus IX81 User Manual Page 24

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