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The optical system of the Leica StereoZoom
®
line con-
sists of two beam paths converging at 12°. Since the
pairs of objectives are very close together, the stereo-
microscopes can be constructed very “slim” towards
the base. This has a number of advantages: less space
required for use on bonders and machines, unimpeded
working on the object, plenty of room for tools, free view
of the object field.
The Greenough system provides a low-cost solution for
correcting aberrations such as chromatism, curvature of
the field of view and distortion. On the new Leica Stereo-
Zoom
®
line the optimally corrected centre of the objec-
tive is used for the image. This results in excellent
optical performance with large, flat, distortion-free fields
of vision and high-contrast images with maximum
chromatic correction.
The Leica S4 E, S6 E, S6, S6 D and S8 APO stereomicro-
scopes including cold-light source and stand are made of
antistatic material with a surface resistance of 2×10
11
ohm/square and a discharge time from 1000V to 100V of
under 2 seconds.
The Leica S6 T Terminator for problematical work areas
and the T incident-light stand are made of antistatic ma-
terial with a surface resistance of 10
2
–10
6
ohm/square
and a discharge time from 1000V to zero of under
0.1 seconds.
The Leica StereoZoom
®
S6 D and S8 APO models are
equipped with a built-in video/photo tube that allows for
simple, quick setting up of digital, film and analog video
cameras.
Greenough
optical system
Protection
against ESD
Photography
8
Leica StereoZoom User Manual
Description