RMM2 ROLLSCOPE MICROSCOPE
UNITRON
®
73 Mall Drive, Commack, NY 11725 • 631-543-2000 • www.unitronusa.com
8
Bulb Centration
The high intensity illuminator has been designed to provide optimum lighting for highest resolution. To
achieve this, a preliminary alignment of the bulb is required. The following steps are to be used to
achieve the correct centration.
1. Place a highly reflective specimen under the 10x objective. Open the field diaphragm completely and
turn on the illuminator. Remove the eyepiece from the microscope eyepiece tube and focus.
NOTE: the filament image will change position when any of the following adjustments are made:
a) Bulb socket is moved up or down in the centering adjustment sleeve of the lamp house.
b) Bulb socket is rotated in the same sleeve.
c) Bulb centering screws are tightened or loosened.
The bulb position is optimum when the filament image appears as shown in Figure C below. Figures A
and B illustrate an off centered filament.
Lamp Filament Alignment
2. Referring to the figure above, note that there are three conditions to be met:
a) The full square area of the filament should be seen. This is obtained by rotating the bulb socket in
the sleeve of the centering adjustment sleeve of the lamp house.
b) The filament image should be centered in the up-down direction. This adjustment is obtained by
moving the bulb socket up or down in the same sleeve. Tighten the bulb socket screw to hold the
socket securely in place. Then insert the eyepiece into the eyetube.
c) The filament image should be centered in the correct direction. Use the two bulb centering screws
to center the filament.
The bulb will be adjusted correctly by following the above instructions. The field of view will be evenly
illuminated with no distortion of the filament lines to impair the image.
