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Leica M-series User Manual 14
A Step Towards Infinity
Ever since their introduction by Horatio S.
Greenough, stereomicroscopes have worked
according to the optical principles based
primarily on Ernst Abbe's research. For over a
century, ingenious optics designers and engi-
neers have worked to push magnification, reso-
lution and image fidelity to the limit permitted
by optics.
In doing so, they have always been constrained
by the interrelation between three factors: the
higher a microscope's resolution, the lower the
available working distance. If one increases the
distance of the optical axes, the three-dimen-
sional image seen by the observer becomes
distorted—a sphere becomes an ellipse, a flat
surface curves towards the observer.
Limits are made to be broken
The Leica M205 FA is the world's first fluores-
cence stereomicroscope with a zoom range
of 20.5:1. This accomplishment, however, was
not enough for Leica's engineers. With the new
FusionOptic™ in the Leica M205 FA, they have
succeeded in going yet another step beyond
previous limits. In addition to the increase in
magnification, the resolution, too, has been
increased to up to 1050 lp / mm, which corre-
sponds to a resolved structure size of 472 nm.
Of course, this increase in performance benefits
your everyday work. Set up your specimens on
the microscope table with comfortable freedom
of movement and discover details in stereomi-
croscopy that you could never see before.
* Leica M205 FA with 1.0× planapochromat and 10× eyepieces