8. Operation

8.13 Oblique Incident Illumination

The light is guided to the incident light object by the cold light illuminator KL2500 (25.3) and the double-armed, flexible light guide with 4.5 mm diameter. Insert the light guide ends into the left and right receptacles on the special articulated arm (25.2). If applicable, attach and tighten the focusing optics (25.1).

The light bundle can be rotated and tilted in ev- ery direction. The scales on the movable articu- lated arms can be used to adjust the illumination accurately. The cold light source KL2500 is used for fine adjustment of the light intensity.

It can be adjusted electrically and mechanically. For electrical light control, the color tempera- ture is changed. For mechanical light control, the color temperature remains constant.

Fig. 25 Oblique incident illumination

1Focusing optics

2Receptacle for light guide with 4.5 mm diameter

3Cold light illuminator KL 2500

1

2

3

Note:

The LED (20.9) or (20.11) is green if the corre- sponding lamp is operated in standard mode. If the LED is red, the bulb life of the lamp is re- duced.

The KL2500 can be controlled using the rotary knobs (20.8 and 20.12).

Please make sure that the KL2500 is connected with the included cables on the rear side of the stand.

The light and shadow effect of the oblique illu- mination yields very pronounced surface reliefs of bullet and shell casing traces, toolmarks, as well as other form, material, and textile texture traces. For reflection protection, a polarization filter can be attached to the focusing optics.

8.14 Coaxial Incident Illumination

The coaxial incident illuminator is mounted on the macroscope carrier. It can be retrofitted at any time. The light is guided to the incident light object by the cold light illuminator KL2500 (25.3) and the double-armed, flexible light guide with 9 mm diameter. Insert the light guide ends into the left and right receptacles of the coaxial illu- mination (26.3).

To use the coaxial incident illuminator, it must be inserted completely. When switching to an- other illumination method, the coaxial incident illumination must be pulled out of the beam path (to the first stop).

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Leica FSC manuel dutilisation Operation Oblique Incident Illumination, Coaxial Incident Illumination