Leica DM E, Instruction Manual

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Leica DM E
Koehler Illumination
Instructions
1.0 Introduction .................. ........................................................................2
2.0 Installation .................... ........................................................................3
3.0 Proper Adjustment ...... ........................................................................5
1.0 Introduction
The installation of the Koehler kit is best done by an authorized Leica Microsystems Service or
Sales Representative, but can be done by anyone who has mechanical experience.
Koehler Illumination provides bright and level illumination and allows you to precisely center
the condenser as well as eliminate stray light from entering the field of view with the use of a
field diaphragm. This is done by a combination of precision optics, condenser adjustment, and
adjusting a field diaphragm so only the field of view is illuminated. The proper adjustment for
Koehler illumination is described after the installation instructions.
Check that you have the following components in your Koehler illumination Kit (see page 1):
• 1 Lens in holder • 2 Mounting bolts
• 1 Koehler field diaphragm • 1 Aspherical lens
• 2 condenser centering screws • 1 2.5mm Allen wrench
• 1 Blue daylight and 1 green filter
Do not touch any lens surfaces with your fingers.