Leica M420 Instruction Manual
Leica M420
Macroscope
The modular system
2
Thank you for your attention. We are proud to present the Leica
M420 macroscope, a Leica creation. As with a stereomicroscope,
large objects can be viewed in their entirety and without prepara-
tion, thanks to the wide fields of view and the favourable working
distances. However, the Leica M420 macroscope offers a vertical
beam path and a high-resolution apochromatic zoom objective,
making it ideal for distortion-free photography, for parallax-free
measurement and for obtaining correct polarization colours.
The modular system
The Leica M420 macroscope is designed on the building-block
principle and can be matched to the individual requirements of
the user, and to the dictates of the workplace, at any time. This
brochure shows a large number of combinations with appropriate
accessories. A clear assembly diagram helps you to put together
the specific configuration that you need. If you still have
questions, get in touch with your local Leica agency or directly
with Leica Microsystems Ltd in Heerbrugg, Switzerland. We will
be pleased to help. CUSTOMER SERVICE is a big thing with us.
Not only before the sale, but afterwards as well.
Welcome!
Contents
Page
Leica M420 macroscope 4
Optical accessories 6
Focusing drive 7
Incident-light stands 8
Swinging-arm stands 9
Universal stand 10
Incident illuminators 11
Transmitted-light stands 14
Stages 16
Measuring, polarization 17
Leica MPS30 and MPS60 photoautomats 18
Digital imaging, video, TV, filming, SLR camera housing 20
Optical data 22
Performance features 23
Catalogue references 24
Assembly diagram 25
Complete outfits 26
Dimensions 27
Further documentation 28
3
Macroscope
1 Leica M420 optics carrier
2 Wide-field eyepieces for
spectacle wearers, distortion free,
with diopter setting adjustable
between +5 and –5 and with
adjustable eyecups
3 Binocular tube: Interpupillary
adjustment range 54mm–75mm,
ergonomically positioned,
30° viewing angle
4 Aperture diaphragm: With this
in its mid position, the image-side
brightness remains constant
5 Prisms: For erecting the image
and directing it into the two
eyepiece tubes
6 Beam splitter: Directs 50% of the
light to the video-/phototube
and the rest to the binocular tube
7 Stop: Prevents stray light
from entering the eyepieces
during photography
8 Tube lens: Magnifies the image
1.25×
9 Macrozoom objective (5:1 zoom) or
Apozoom objective (6:1 zoom)
10 Video-/phototube accepts Leica
photoautomats; cine, video and
TV cameras; and digital cameras
11 Focusing drive: With coarse
and fine focusing
12 Incident-light stand with stage
plate and with 300mm or
500mm column
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5
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7
8
4
9
2
10
11
12
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1
Leica Design
by Ernest Igl/Christophe Apothéloz
The requirements
A modern macroscope must bring its user the maximum possible
benefits and must uncompromisingly fulfil the requirements
demanded of it. Like the macroscopes from Leica, the modular
components of which can be combined in accordance with your
wishes. Get in touch with us. We will gladly help you to assemble
the ideal outfit for your needs in examination, in training or in
documentation.
Macroscope
Macroscopes are optical precision instruments
for studying objects in their entirety in conjunction with large working distances and large
fields of view. The multiple-coated optical
system involves a single vertical beam path
which, for purposes of comfortable observation
in the binocular tube, is then split into two
identical parts. The vertical observation mode
ensures parallax-free imaging and is ideal for
faithful documentation, precise measuring, and
investigations involving polarized light.
The Leica M420 macroscope is an instrument
for optical inspection in all fields of science
and technology where image quality and user
comfort are both rated highly.
The modular system
The optics carrier with binocular tube can be
equipped with a Macrozoom- or Apozoom
objective, with one of several additional objectives, with eyepieces of various intrinsic magnifications, and with an appropriate stand and
illuminator.
Additional accessories for photography, TV,
digital imaging, measuring and polarization can
be easily added.
Adapting any camera
The incorporated video-/phototube will accept
most still cameras and CCD-, TV- and cine
cameras. If however a Leica modular photomicrographic system is used, there is a choice
between two fully-automatic systems.
Photo eyepieces (8×, 10×, 16×) in the video-/
phototube enlarge the image and project it into
the film plane (two-stage magnification). There
is an additional magnification factor of 1.25× in
both the observation beam path and the photo
beam path. The limits and sharpness of the
image can be inspected by looking into either
the binocular tube or the focusing telescope
of the camera. The light is partitioned 50%/50%
between observation and photography.
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6
Optical accessories
The requirements
Because the working distance, the total magnification and the
field of view must all be adapted to the application, the user needs
to be able to choose from a range of high-quality objectives and
eyepieces.
The Macrozoom- and Apozoom objectives can
be combined with the coaxial incident-light
housing, with a quarter-wave plate, and with
additional objectives.
1:5 Macrozoom objective
The Macrozoom objective is inscribed with the
magnification range 6.3× to 32×. This means
that, if 10× eyepieces are used in the binocular
tube (which introduces a tube factor of 1.25×),
objects can be observed at constant sharpness
over a zoom range from 7.9× to 40×. The optical
components are computed to give wide aperture
and good resolution, multiple-coated to ensure
high image contrast, and well corrected to
produce image fidelity and crispness.
The 0.5× and 2.0× additional objectives can be
used with the Macrozoom objective.
1:5 Macrozoom and 1:6 Apozoom
objectives
1:6 Apozoom objective
The intrinsic zoom range of the Apozoom objec-
tive is from 5.8×to 35×, i.e. the zoom range down
the binocular tube if 10× eyepieces are used is
7.3× to 43.8×.
Because of its excellent chromatic correction for
three spectral colours and for all intermediate
tones, the Apozoom is the objective of choice if
requirements stipulate maximum sharpness,
highest resolution and maximum contrast rendition, even for the finest structures.
The 0.4× and 2.0× additional objectives used
with the Apozoom objective have been specially
designed for it.
Wide-field eyepieces for spectacle wearers,
distortion-free
• Intrinsic magnifications
10×, 16×, 25× and 40×
• Usable with or without spectacles
• Adjustable eyecups
• Diopter setting adjustable from +5 to –5
• Accepting graticules for measuring
and for photography
The basic outfits include distortion-free, wide-
field eyepieces (10×/21B) for spectacle wearers,
with excellent imaging characteristics. Because
of their long exit pupil distance of 22mm (at this
distance the observer sees the full field of view)
these eyepieces are usable either with or without spectacles. If you work without spectacles
and want closer contact to the eyepieces or to
the eyecups, you can displace the height of the
eyecup above the eyelens within the range from
4mm to 20mm.
Additional objectives, with bayonet
mount: 0.5× and 2.0× for the Macrozoom, 0.4× and 2.0× for the Apozoom,
and rotatable quarter-wave plate.
Wide-field eyepieces for
spectacle wearers, 10×/21, 16×/14,
25×/9.5, 40×/6
7
New: Leica motor-focus system
The new motor-focus system enables any
microscope outfit to be moved weightlessly up
and down with light movements of the fingers or
feet, or through computer control. With the hand
control, five exact focus settings can be stored;
with the computer, the number is unlimited, and
the instrument can travel to these positions
directly. The motor-focus system can easily be
fitted to the incident- and transmitted-light
stands and to the large swinging-arm and tableclamp stands.
Information in brochure M1-267-1en.
Coarse/fine focusing
Coarse/fine drive for incident- and
transmitted-light stands
The coarse/fine focusing drive permits focusing
along the full length of the side-faced column.
The coarse drive permits focusing over long
distances; the fine drive permits fine focusing.
The focusing drive and the side-faced column,
300mm or 500mm long, are supplied already
assembled. The low-positioned, convenientlyshaped, bilateral drive knobs enable you to work
comfortably with your arms supported. The ease
of movement can be adjusted individually in
accordance with the loading.
Focusing drive
Motor-focus
system, on
transmitted-light
stand HL
8
Incident-light stand
The requirements
It must be possible to arrange the stereomicroscope work station
exactly in accordance with requirements. The instrument can
only be fully integrated into the work process if the sturdy stand
offers unrestricted access to the object and adequate space for
tools and jigs.
Incident-light
stand
Incident-light stand
The incident-light stand consists of a stable
baseplate and a 300mm- or 500mm long sidefaced column. The column bears the focusing
drive and therefore also the microscope carrier
and the optics carrier. The stand also includes
a 120mm-diameter black/white stage plate. The
ergonomic shape of the baseplate, and its soft
upper surface, provide pleasant support for the
hands of the user.
9
Swinging-arm stands
Swinging-arm and table-clamp stands
These stands offer ample space for large
objects such as rocks, metal objects or circuit
boards, which can be manipulated directly on
the surface of the bench. The many possibilities
for adjusting on the column, the horizontal arm
and the inclinable carrier rod enable the working
area to be planned as required.
The inclinable drive housing has a lift of 128mm.
The coarse/fine focusing drive helps to focus
quickly over long distances, and to adjust the
final setting accurately.
The large swinging-arm stand is supplied with
a 550mm long column.
The table-clamp stand (550mm long column)
can be clamped to bench- or table tops having
thicknesses of between 20mm and 50mm, and
also to machines or jigs.
Large swinging-
arm stand
with motor-focus
system
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