Discovery V20

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SteREO Discovery.V20
Zoom Factor 20 in Stereomicroscopy –
More Flexibility Between Overview and
Detail Magnification
M i c r o s c o p y  f r o m  C a r l  Z e i s s
SteREO Discovery.V20
The New Spectrum


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Fact Innovation:
Never Before has
the Magnification
Spectrum been
Larger.
There’s a new performance standard in the demanding
world of stereomicroscopy: Zoom Factor 20. The factor
for the largest spectrum between overview and detail
magnification. The microscope: SteREO Discovery.V20.
A Carl Zeiss design. And a research instrument with
which the pioneer of the CMO principle (Common Main
Objective) has once again broken new ground for the
future of stereomicroscopy after the telescope principle.
The development of the SteREO Discovery.V20 has
exceeded the limits of conventional modes of action.
Founded on a new technological base and integrated
into the SteREO* generation series from Carl Zeiss,
SteREO Discovery.V20 is highly impressive and boasts
a superior performance profile. For maximum precision
and considerably more freedom in biology, medical and
industrial labs. The new features:
• planapochromatic corrected microscope bodies
with a zoom range of 20:1
• high end magnification of up to 345x
(with eyepiece 10x)
• maximum resolution of 1000LP/mm
(with objective PlanApo S 2.3x)
• excellent 3D-effect up to the highest
magnification
• comfortable, securely reproducible operational
and control concept with SyCoP
• seamless integration into the modular system
of the SteREO Discovery generation 
* SteREO – Stereomicroscopy Redefined in Ergonomics and Optics 


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teREO Discovery.V20


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SyCoP
1.
2.
3.
3. Extraordinarily large working area:
the stand design with decentralized profile column S.
The Performance Factor:
Superiority Can be Documented
At the borders of technical possibilities details
become a critical factor. Better optics is responsible
for a visible improvement in image information. The
easier operation concept delivers faster results. Fac-
tors which Carl Zeiss places the utmost importance on
in development and consistently optimizes until the
peak of performance is reached. The results create
new benchmarks. At any place where living objects
or material samples are observed, manipulated or
documented in detail, three-dimensionally and with
high resolution or high contrast.  
1A in 3D: Spatial impression
With SteREO Discovery.V20, higher magnifications
can also be realized with smaller lenses thanks to
the large zoom range of the microscope body. The
smaller stereo angles associated improve the 3D
impression of the microscopic image. The result:
you remain more relaxed during observation and
notice even the smallest details. 
Secure the highest
magnifications: Stability
High image resolution and end magnification place
new demands on the stability of the stand system of
this stereomicroscope. All relevant components were
designed and built according to the most modern
methods. The stands feature a significantly higher
rigidity and is considerably less susceptible to vibrations
than previous systems. The motor focusing makes fine
focusing in intervals of 350 nm in a range of 340 mm
for loads of up to 17 kg possible. 
1. With SyCoP, even the most complex stereomicroscopic operation
procedures can be handled comfortably. Without letting the
sample out of your sight. With one hand, reliable and flawless.
2. The new SteREO Discovery.V12 zoom body is parfocally adjusted.
For pin sharp pictures in the complete magnification range.


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Increase free space:
Zoom factor 20:1
The largest range from overview to detail –
SteREO Discovery.V20 has brought a new zoom
range into the research laboratory. And what’s
more: even the basic configuration of this top ste-
reomicroscope offers an end magnification of 150x.
Equipped with the nosepiece S. cod as well as
the objectives PlanApo S 0.63x, PlanApo 1x and
PlanApo S 2.3x, SteREO Discovery.V20 covers a
magnification range from 4.7 to 345x. That is a
factor of 73! With only one turn of the nosepiece. 
Decide economically:
The SteREO Discovery
upgrade concept
SteREO Discovery offers a wide spectrum of com-
patible modules and accessory components. No
matter what instrument type you choose, you have
the freedom to upgrade your system according to
your needs at any time. Up to the highest-capacity
Imaging System that stereomicroscopy has to offer
currently.  
Sophisticated and universally compatible:
the wide accessory range fits for every
instrument type of the SteREO Discovery
generation.
Intelligent operation: SyCoP  
SyCoP stands for System Control Panel and for a
considerable gain in time, overview capability and
flexibility in the operation of increasingly complex
operation procedures. Designed especially for the
demands of stereomicroscopy, the novel operation
concept combines joystick, keys and touch screen in
the handy design of a computer mouse. With SyCoP,
almost all important microscope functions can be
controlled virtually location-independent. Fast, pre-
cise and reproducible. Without removing your eye
from the eyepiece ocular. Your attention stays on
the object. In addition, SyCoP provides current data
about the total magnification, object field, resolution
and depth of focus of your microscope setting.
SyCoP is an option for the future. New functions
and further accessories are integrated through the
open CAN-Bus concept. 


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SteREO Discovery.
The Technology Factor:
Exceeding the Limits
At the limits:
The conventional technology
The centerpiece of a CMO stereomicroscope is the
pancrat (microscope or zoom body). During zoom-
ing, lenses are moved and must be brought into a
certain position in relation to other securely in-
stalled lenses with extraordinary precision. Until
now a mechanical curve – a simple metal piece
milled with great care – determined largely parts the
exactness of the traverse path of these lenses and
thereby the overall microscope quality. The precision
required for new stereomicroscope generations can
no longer be fulfilled in this way. 
The solution:
The new active principle
On the SteREO Discovery.V20, this mechanical curve
has been replaced by a virtual one. The movable
lenses are moved with a stepping motor and posi-
tioned exactly with a processor. The microscopic
images then stay considerably sharper. That has some
definite advantages for your research applications: 
•  3D images can be viewed in the stereomi-
croscope in a noticeably more relaxed way
The partial images which are produced for our
eyes are much sharper and better coordinated.
The effort of the brain to create a 3D image
is less.
• Sharper images produce
contrast improvements
Particularly decisive when the stereomicroscope
is used in high and the highest magnifications.
Microscopy pushed to the limits of useful
magnification. 
• Higher magnifications with a
larger zoom range
Until recently a zoom with a factor of 16 but
not higher was considered technically possible
but this limit can now be exceeded considerably
with this new technology. And it’s affordable. 
Carl Zeiss has created a new milestone in stereomi-
croscopy with the SteREO Discovery.V20. Over 30
invention disclosures and patent applications are pro-
viding that this technological advantage is preserved.  
Better 3D images, higher resolution, larger zoom
ranges – technologically, the conventional stereo-
microscope has reached its limits. Each lens, each
mechanical detail exhibits tolerances – regardless of
the precision of the production. The higher the
demands on resolution and magnification become,
the less acceptable are these tolerances. 
Fast, flexible and effective: the final assembly of the stereomicroscope
SteREO Discovery in the clean rooms of Carl Zeiss MicroImaging GmbH
in Jena. It is customized as “individual item chain production according to
the Wertstrom design criteria”.


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4.
5.
6.
V20
Zoom position of 
pancrat
Defocus position in μm  
Depth of field curve, with in these parameters the picture is
in focus 
Typical defocus curve of one channel with classical adjustment
(pancrat with mechanical zoom curve)
Typical defocus curve of one channel of the SteREO Discovery.V20
(pancrat with virtual electronically derived curve)
1. Before the assembly begins each lens is exactly calibrated
against a “0-lens type”. This lens value is digitally saved in
a data pool – the basis on which computer-calculated
combinations are established. By doing this, an optimally
coordinated lens family is developed for every individual
microscope
2. Rotating reflexes of a lens. As soon as it is in the circle…
3. ... a moveable micro clapper of the computer-controlled
glue leveling machine autonomously undertakes the fine
alignment.
4. After being moved into place, the lenses are immediately
fixed. Precision tools automatically lay high-precision,
uninterrupted glue beads through a strong cannula
0.5 mm wide.
5. Hardening of the glue beads under UV-radiation.
6. In the pancrat adjusting device, the precise procedures of all
moveable optical elements are programmed. To do this,
around 7000 supporting points are analyzed via computer.
In doing so, each stereomicroscope obtains its own correc-
tion – its own individual zoom control curve.
Illustration of the defocus curve of a classical mechanical pancrat in comparison
to a motorized one (SteREO Discovery.V20). It is clear that the motorized pan-
crat differs from the 0 line about half less than the mechanical one. That means:
SteREO Discovery.V20 with motorized pancrat delivers twice as sharp images.


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3.
1. Tubes
Today ergonomics is a basic demand on microscopy.
The user’s posture should remain relaxed even over
long periods of work. An important factor for this
are the observation tubes. The eyepiece sockets are
swingable and adjustable in two levels. With the
ergotube the angle of vision can be individually
adjusted between 5 and 45 degrees.
2. Objectives
Objectives largely determine the image quality –
and they are a relevant economic factor. The selec-
tion of objectives for the SteREO Discovery.V20
receives special attention for a reason. The spectrum
ranges from the cost-effective objectives of the
Achromat series to the high-capacity Plan-Achromat
objectives to the Plan-Apochromat series, which
meets the highest requirements.  
3. Stages
Designed to move your objects gently and jolt-free
during observation – a wide spectrum of different
stages is available for the SteREO Discovery.V20.
According to your needs, choose from sliding,
rotating, mechanical or ball-and-socket stages.
The motorized mechanical stage offers an addi-
tional advantage in precision when adjusting and
controlling objects: precisely accurate, fast and
reproducible. 
4. Fluorescence
PentaFluar S is the retrofittable intermediate tube
with a coaxial fluorescence mechanism which con-
verts your SteREO Discovery.V20 into a high-
capacity fluorescence system. The filter turret
holds up to five filter modules and there are also
many possibilities regarding illumination. Besides
the well-established HBO lamps, X-Cite 120 with
a liquid lightguide is recommended.   
The Flexibility Factor:
the Upgrade Possiblities are Endless
The modular construction of the SteREO Discovery.V20
is typical for main lens stereomicroscopes. The multi-
tude of accessory components which you can have
installed on the high-capacity stereomicroscope in
order to create an effective observation and docu-
mentation system is correspondingly wide . The flexi-
bility is unusual: completely integrated into the
Carl Zeiss system world and equipped with intelligent
interfaces, each component can be installed for every
instrument type in the SteREO Discovery range. 


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teREO Discovery.V20
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6.
8.
5. Cameras
The demands on the documentation of microscopic
images in research are as different as the projects
themselves. The spectrum of digital microscope
cameras for the innovative high-performance
system SteREO Discovery.V20 is correspondingly
diverse. Starting with digital consumer cameras
through to professional cameras of the microscope
camera family AxioCam, Carl Zeiss offers you a suit-
able price and performance class for every demand. 
6. Illumination
The quality of illumination essentially determines
the quality of the results – in particular with stereo-
microscopic contrasts. With an elaborate system of
interfaces and adapters, SteREO Discovery.V20 can
be equipped with modern fiber optic LED-compo-
nents. Optimal for the illumination and contrasting
of various objects.  
7. Operation
Completely motorized, SteREO Discovery.V20 offers
reproducibility and considerable simplifications for
your experiment procedures. In particular for con-
trolling object details as well as for setting illumina-
tion and contrasts. In addition, the innovative control
system is now available. Designed to be user-friendly
and securely operable. This is the foundation of the
fact that the control of the current highest-capacity
stereomicroscopy research device practically runs
itself. 
8. Microscope Software
AxioVision is the superior software for microscope
control, image acquisition, image processing,
image administration and archiving. With a univer-
sal modular design and upgradeable according to
your needs from the basic version to the most
demanding special configuration. The microscope
software from Carl Zeiss is completely integrated to
the current highest-capacity analysis platform and
holds a top position worldwide on account of its
simple operation principle and its high productivity.


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S
True to reality, completely shift-free 3D imaging of
the researched specimen are the demands of
contemporary stereomicroscopy. From a complete
overview down to the smallest detail like organs,
tissues and neurons. Now, Carl Zeiss raises the bar
even higher.
SteREO Discovery.V20 with its zoom of 20x doesn’t
just deliver a large magnification range, it also shines
with a brilliant image quality in the research of living
specimen and other objects of Life Science. The con-
sequent minimization of stray light of all tubes, the
zoom body and the objectives as well as the indi-
vidually tailored zoom curve, allow for a rich contrast
in the images over the entire zoom range – from the
overview up to the highest magnification. The large
base and the grand front lens add to the unique
3D effect. 
Therefore the SteREO Discovery.V20 ensures an
image quality that you can count on in research
facilities and laboratories of biology and medicine. It
is also ideal to observe and research model organ-
isms of developmental biology.
Practical Life Sciences:
High Magnifications,
Excellent Depth Perception
1. Mouse embryo, stained, transmitted-light brightfield,
objective PlanApo S 0.63x, magnification 4.7x* 
2. Mouse embryo, stained, transmitted-light brightfield,
objective PlanApo S 0.63x, magnification 94x*
3. Diatome, transmitted-light darkfield,
objective PlanApo S 2.3x, magnification 345x*


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teREO Discovery.V20
The demands for high-end stereomicroscopes rise
with the perception of smaller details. On one hand
there is the need for fast orientation of where you
are in the specimen and that requires a large
overview. On the other hand there is the need for
observing and documenting the smallest detail in
a rapid switch from the overview image – ideally
without re-focussing. 
The SteREO Discovery.V20 with a zoom of 20x gives
you a vast advantage in your lab. It is the only
stereomicroscope that allows a fast switch from
overview to detail image. Here the motorised zoom
delivers a precise and free to choose zoom position.
And it only differs less than 1%. That means a
reproducibility of more than 99%! This is the pre-
cision of an ideal research instrument with its
always correctly scaled images to measure and
document tasks in micromechanics and quality
control. And it is a safe investment into a new
dimension of achievement. 
Practical Materials:
99% Reproducibility,
100% Investment Security
1. Semiconductor, reflected-light darkfield,
objective PlanApo S 1x, magnification 7.5x*
2. Semiconductor, reflected-light darkfield,
objective PlanApo S 1x, magnification 150x*
3. Semiconductor, reflected-light darkfield,
objective PlanApo S 1x, magnification 20x*,
Extended Depth of Focus
* Total magnification through eyepieces


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Objectives
Description
FWD
Factor
(mm)
PlanApo S
0.63x
81
PlanApo S
1.0x
60
PlanApo S
1.5x
30
PlanApo S
2.3x
10
PlanApo S
3.5x mono
16
Plan S
1.0x
81
Achromat S 
0.3x
253
Achromat S 
0.5x
151
Achromat S 
0.63x
115
Achromat S 
1.0x
69
Achromat S 
1.5x
28
Eyepieces
WPL 10x/23 Br. foc 
PL 16x/16 Br. foc
W 25x/10 foc
Magnification      Object Field (mm) Magnification
Object Field (mm)
Magnification
Object Field (mm)
4.7x … 94.5x
48.7 … 2.4
7.6x … 151x
33.9 … 1.7
11.8x … 236x
21.1 … 1.1
7.5x … 150x
30.7 … 1.5
12x … 240x
21.3 … 1.1 
18.8x … 375x
13.3 … 0.7 
11.3x … 225x
20.4 … 1.0 
18x … 360x
14.2 … 0.7 
28.1x … 563x
8.9 … 0.4 
17.3x … 345x
13.3 … 0.7
27.6x … 552x
9.3 … 0.5 
43.1x … 863x
5.8 … 0.3 
26.3x … 525x
8.8 … 0.4 
42x … 840x
5.5 … 0.27 
65.6x … 1312.5x
3.5 … 0.18 
7.5x … 150x
30.7 … 1.5
12x … 240x 
21.3 … 1.1 
18.8x … 375x
13.3 … 0.7
2.3x … 45x 
102 … 5.1
3.6x … 72x
71.1 … 3.6
5.6x … 113x
44.4 … 2.2
3.8x … 75x
61.3 … 3.1
6x … 120x
42.7 … 2.1
9.4x … 188x
26.7 … 1.3
4.7x … 94.5x
48.7 … 2.4
7.6x … 151x
33.9 … 1.7
11.8x … 236x
21.1 … 1.1
7.5x … 150x
30.7 … 1.5
12x … 240x
21.3 … 1.1
18.8x … 375x
13.3 … 0.7
11.3x … 225x
20.4 … 1.0
18x … 360x
14.2 … 0.7
28.1x … 563x
8.9 … 0.4
SteREO Discovery.V20:
The Technical Data
Carl Zeiss MicroImaging GmbH
P.O.B. 4041, 37030 Göttingen, Germany
Phone: +49 551 5060 660
Fax:     +49 551 5060 464
E-mail: micro@zeiss.de
www.zeiss.de/stereo-discovery
Printed on environmentally-
friendly paper, bleached without
the use of chlorine.
Subject to change.
46-0128 e  05.2007
ALLIED HIGH TECH PRODUCTS, INC.
2376 E. Pacifica Place
Rancho Dominguez, CA 90220
(800) 675-1118
www.alliedhightech.com


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