Leica DMI3000B, DMI6000B, DMI4000B manual Centering the Hg 100 W and Xe 75 W mercury lamps

7. Start-up

Caution!

Never look directly into the beam path! Beware of the glare hazard when switching to reflector BF or Smith!

Caution!

Light sources pose a potential irradiation risk (glare, UV-radiation, IR-radiation).

In the lamp housing 106 z, the direct image of the filament (in halogen lamps) or the arc (in gas discharge lamps) and its reflection are focused separately and adjusted in relation to one an- other.

An adjustment window (2.8, p. 19) in which the light source is visible is located on the right side of the microscope.

Adjust the lamp as follows while observing the light source in the adjustment window.

Centering the Hg 100 W and Xe 75 W mercury lamps

¥The adjustment window shows the direct im- age of the arc and its mirror image. These are generally not in alignment with one another.

¥Focus the direct image with the collector (100.6).

¥Use the adjusting buttons to pivot the arcÕs mirror image on the rear side of the lamp housing (100.2, 100.4) to the side or com- pletely out of the beam path. The arcÕs fo- cused image remains visible (Fig. 101).

¥Use the adjusting buttons (100.1 and 100.5) to place the direct arc image in the middle of the centering plane, whereby the bright tip of the arc, the focal spot, should lie slightly outside the center (Fig. 102).

Fig. 100 Lamp housing 106z L

1Lamp adjustment, vertical

2Vertical reflector adjustment

3Focusing the reflector image

4Horizontal reflector adjustment

5Lamp adjustment, horizontal

6Collector focusing

7Screw

7 6 1 5

2

3

4

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