Leica M205 FA user manual Leica TL RCI The Deflection Mirror, Inverted world?, Tilted mirror

Leica TL RCI™: The Deflection Mirror

1

Inverted world?

Depending on the properties of the specimen (refractive index of the environment) and the perception of the viewer, it is possible that the switches described below for positive and inverted relief contrast are to be operated in reverse. This means that the lower switch, rather than the upper switch, controls inverted the relief contrast and vice-versa.

Tilted mirror

The built-in mirror features one flat and one concave side and can be rotated and moved. The concave side has been specially designed for the optical requirements of objectives with a high numerical aperture. The black rotary knob on the left side of the transmitted-light base can be used to rotate the built-in path-folding mirror and move it forwards/back.

The concave cutout on the handle indicates the concave side of the mirror, allowing intuitive operation at any time without eye contact.

The angle of light incidence in the specimen plane changes depending on the tilt and posi- tion of the mirror. As a result, switching between transmitted light bright field, oblique illumina- tion and dark field-like illumination is possible.

Functions of the rotary knob

The rotary knob (1) fulfills the following tasks:

ρρ Turning the deflection mirror from the flat to the concave side

ρρ Slight tilting to guide the light beam through the specimen plane at a steeper or flatter angle

ρρ Moving the deflection mirror (forwards/ back)

Leica M-series User Manual 96