Leica DM IRB manual Assembly of condensers, Transmitted light illumination column, back view

The lamphousing for transmitted light illumination for 12 V 100 W halogen lamps with single-lens aspherical collector and heat protection filter is an integral part of the transmitted light illumination column. The halo- gen lamp is preassembled. The chapter on Troubleshooting includes a description of how to assemble and change halogen lamps.

The cable on the illumination column can then be connected to the 12 V 100 W socket on the back of the microscope stand.

Assembly of condensers

The technical description of the condensers can be found in the chapter “Technical description”. All condensers of the Leica DM IRB are equipped with a 6-position rotating disc (6.2 and 8.3) and can be individually fitted with the corresponding annular diaphragms for phase contrast (PH), darkfield (DF) or IC prisms for TL interference contrast (ICT) (10).

Usually the annular diaphragms are already inserted in the condenser disc in the factory, so you will not normally have to fit them yourself. The condenser disc (11.5) is removed from the condenser by slackening the screw (11.4) on the underneath of the condenser.

Fig. 4 Assembly of transmitted light illumination column
1 Transmitted light illumination column, 2 Pin of TL illu-	Fig. 5 Transmitted light illumination column, back view
mination column, 3 Support surface, 4 Groove of support	1 Knurled screw for clamping the transmitted light illumi-
surface, 5 Drill holes for fixing screws	nation column

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