Leica DM IRB Differences between prism D and D1, Inserting the analyser, Inserting the polariser

Differences between prism D and D1

Prism D is the standard prism with greater shearing and therefore higher detection sensi- tivity for minute topological and refractive index variations in the specimen. Prism D1 has smaller shearing than prism D and a lower detection sensitivity for topological and refractive index variations.

However, prism D1 is better at resolving details of fine specimen structures.

Inserting the analyser

Remove the blind slide and insert the analyser (24.2) from the left as far as the 1st clickstop.

Inserting the polariser

The polariser is inserted into the filter holder of the condenser. In addition a whole-wave compensator is applied to the back of the polariser. It is activated by turning the polariser over, in order to enable colour contrasting in polarisation or interference contrast (the com- pensator is active when the lambda symbol λ is visible from above).

Fig. 24 Polariser/analyser	Fig. 25 Condenser 0.53 S23
1 Polariser POL↔, 2 Analyser ICT ↔	1 Filter holder with polariser inserted (swung out)

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