Nikon OPTIPHOT-POL Petunjuk Manual - Halaman 8

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III.

PREPARATION

Lamp housing

clamp screw

Filament

image

Condenser

aperture

diaphragm

Socket sleeve

clamp screw

Lamp vertical

centering ring

Lamp lateral

centering screw

Fig. 6

Release the socket sleeve clamp screw (Fig.

6). Turning the lamp lateral centering screw

and vertical centering ring, bring the fila-

ment

image to the center,

as shown in

Fig.7.

Fig. 7

As shown in Fig. 8, put the diffuser, with

its matte surface faced toward the micro-

scope stand,

into

the

filter

receptacle

which

is the closest to the microscope

stand.

Fig. 8

The above centering procedure should be car-

ried out, when replacing the lamp bulb.

Lamp housing

Lamp

centering

tool

1. Centering the Lamp

ND filter

1) Connect

the

power

source cord to the

socket.

2) Turn the brightness control dial to switch

ON and adjust

the voltage to 6 on the

indicator.

3) Place the specimen on the stage, and focus

on the specimen using

lOx

objective.

this case, open the condenser aperture and

field diaphragms to the largest extent.

Roughly

center the condenser lens using

lOX

objective,

following

the procedures

given on P. 10- 6.

5) Put the lamp centering

tool on the field

lens and onto the tool place a NO filter.

(Fig. 4)

Fig. 4

6) Stop

down

the condenser aperture

dia-

phragm,

release the lamp housing clamp

screw, and move the lamp housing back

and forth (Fig. 5), until a sharp image of

the lamp filament

appears on the aperture

diaphragm

surface, which can be seen by

the reflection from the NO filter.

Fig.5