Operation of the macro device

Like the slide overlay device, the macro overlay (Fig. 73) only works in the 50/50 beamsplitter position (switch rod in middle position) of the FSA 25 PE tube.

The microscope illumination is left switched off to avoid disturbing image brightening.

The object is placed on the stage under the mirror housing of the macrodual zoom (73.11) and illuminated.

Stand lamps, cold-light illuminators and fibre- optic lamps, etc. are suitable sources for micro- scopy.

The image is observed in the microscope tube and focused by turning the knurled ring (73.10). The magnification can be changed continuously in a range of 1 : 4 by adjusting the zoom ring (73.7).

When changing the magnification with the zoom control the image has to be slightly refocused with the knurled ring (73.10). The zoom magnification factors can be read on the scale (73.8). The magnification also changes when the distance between the object and the macro attachment is varied.

Fig.Ê 73ÊMacroÊ device on FSA 25 PE tube with tube adapter

1 Tube flange, 2 Coupling ring, 3 Reflection optics, 4 Coupling ring, 5 Macro adapter, 6 Screw ring, 7 Zoom setting ring 1 : 4, 8 Scale of zoom factor, 9 Scale of magnification factor of the working distance, 10 Scale of object distance from the bottom edge of the mirror housing, 11 Mirror housing

 

 

 

 

7 9

 

1 2 3

4

5

6

8 10

11

90

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Image 90
Leica DM IRB manual Operation of the macro device, Fig.Ê 73ÊMacroÊ device on FSA 25 PE tube with tube adapter
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