KERN OZC-5 User manual

OZC-5-BA-e-1510
KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
E-mail: [email protected]
Tel: +49-[0]7433- 9933-0
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
User instructions
Stereo zoom microscope
KERN OZC-5
OZC 583
Version 1.0
01/2015

OZC-5-BA-e-1510 2
GB
KERN OZC-5
Version 1.0 01/2015
User instructions
Stereo zoom microscope
Table of contents
1Before use....................................................................................3
1.1 General notes............................................................................................................................ 3
1.2 Notes on the electrical system................................................................................................ 3
1.3 Storage ...................................................................................................................................... 4
1.4 Maintenance and cleaning....................................................................................................... 5
2Nomenclature...............................................................................6
3Basic data.....................................................................................8
4Assembly......................................................................................9
5Operation and functionality.......................................................11
5.1 Getting started........................................................................................................................ 11
5.2 Adjust the interpupillary distance ........................................................................................ 11
5.3 Adjusting the magnification.................................................................................................. 11
5.4 Dioptre adjustment and focussing ....................................................................................... 12
5.5 Adjusting the stand................................................................................................................ 13
5.6 Using eye cups / High Eye Point eyepieces ........................................................................ 14
5.7 Lighting control ...................................................................................................................... 15
5.8 Using external illumination units.......................................................................................... 16
5.9 Fitting and adjusting a camera ............................................................................................. 17
5.10 Using additional accessories................................................................................................ 19
5.11 Changing the bulb.................................................................................................................. 20
6Optical data ................................................................................20
7Features......................................................................................21
8Trouble shooting........................................................................22
9Service........................................................................................23
10 Disposal......................................................................................23
11 Further information....................................................................23

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1 Before use
1.1 General notes
You must open the packaging carefully, to make sure that none of the accessories in
the packaging fall on the floor and get broken.
In general, microscopes should always be handled carefully because they are
sensitive precision instruments. When using or transporting the microscope it is
particularly important to avoid abrupt movements, as this may damage the optical
components.
You should also avoid getting dirt or finger prints on the lens surface, because in
most cases this will reduce image clarity.
To maintain the performance of the microscope, it must never be disassembled. So
components such as lenses and other optical elements should be left as they were
before use.
1.2 Notes on the electrical system
Before connecting to a mains power supply, you must make sure that you are using
the correct input voltage. The information to select the correct mains cable is located
on each device, on the product directly above the connection socket. You must
comply with this information. If you do not comply with these specifications, then fires
or other damage to the device could occur.
The main switch must also be switched off before the mains cable is connected. In
this way you will avoid triggering an electric shock.
If you are using an extension cable, then the mains cable you use must be earthed.
When carrying out any procedures whereby you come into contact with the electrical
system of the device, such as, for example, changing the bulb, only carry out these
procedures when the power is disconnected.

OZC-5-BA-e-1510 4
1.3 Storage
You should ensure that the device is not exposed to direct sunlight, temperatures
which are too high or too low, vibrations, dust or a high level of humidity.
The ideal temperature range is between 0 and 40°C and a relative humidity of 85%
should not be exceeded.
The device should always be located on a rigid, smooth, horizontal surface.
For devices with pillar stands, the microscope holder must not be rotated back too
far. If you do this, there is a risk that the microscope could tip over.
When the microscope is not being used, you should fit the objective cap and cover
the microscope with the enclosed dust protective cover.
If the eyepieces are being stored separately, the protective caps must be fitted to the
tube connectors. In most cases, if dust and dirt gets inside the optical unit of a
microscope this can cause irreversible errors or damage.
The best way to store accessories which consist of optical elements, such as, for
example, eyepieces and objectives, is in a dry box with desiccant.

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1.4 Maintenance and cleaning
In any event, the device must be kept clean and dusted regularly.
If any moisture should be occur, before you wipe down the device you must ensure
that the mains power is switched off (if lighting unit is fitted).
When glass components become dirty, the best way to clean them is to wipe them
gently with a lint-free cloth.
To wipe oil stains or finger prints off the lens surface, moisten the lint free cloth with a
mixture of ether and alcohol (70 / 30 ratio) and use this to clean the lens.
You must be careful when handling ether and alcohol, as these are highly flammable
substances. You must therefore keep it away from naked flames and electrical
devices which can be switched on and off, and only use it in well-ventilated rooms.
However organic solutions of this type should not be used to clean other components
of the device. This could lead to damage to the paint finish. To do this, it is sufficient
to use a neutral cleaning product.
You could also use the following cleaning products to clean the optical components:
Special cleaner for optical lenses
Special optical cleaning cloths
Bellows
Brush
When handled correctly and checked regularly, the microscope should give many
years of efficient service.
Should repairs still be necessary, please contact your KERN dealer or our Technical
Department.

OZC-5-BA-e-1510 6
2 Nomenclature

7 OZC-5-BA-e-1510
Side view of the microscope head

OZC-5-BA-e-1510 8
3 Basic data
Optical system
Parallel
Dimmable lighting
Yes
Magnification ratio
3,6:1
Tube
angled at 45°
Interpupillary distance
52 –76 mm
Dioptre adjustment
On both sides
Product dimensions WxDxH
305x180x405 mm
Packing dimensions WxDxH
370x340x400 mm
Gross weight
8,5 kg
Net weight
6,6 kg
Standard configuration
Model
KERN
Tube
Eyepiece
Field of view
mm
Objective
Zoom
Stand
Illumination
OZC 583
Trinocular
HSWF 10x Ø 23 mm
Ø 12,78 –3,5
1,8x –6,5x
Arm curved
2W (Reflected) (Coaxial)

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4 Assembly
The first step is to position the microscope stand on a firm, level surface. The term
stand covers the stand base (standing surface) as well as the metal pillar which is
connected to it.
The holder is connected to the post of the stand by a toothed rack.
Please see section 5.5 for more details on adjusting the stand.
The next step is to place the microscope head on the holder, by passing the
objective through the holder ring until the rest of the head is above the ring.
You must use the small silver adjusting screw on the front of the holder ring to fix the
head in place.
The alignment of the microscope head is left to the user to do and can be adjusted to
suit the individual application situations.
To make it easier to operate the focus wheels for example, we recommend that you
position the head with the tube connectors centrally to the front.
Ideally, the holder and head are then parallel on the central axis of the stand base
(see figure on page 10).
Then you can remove the protective caps from the tube connectors so that you can
then fit the eyepieces. When doing this, please be particularly careful that you do
not touch the optical lenses with your fingers and that no dust enters the
apertures.
You should also never fit two eyepieces with different magnifications.
You also have to make sure that the device is supplied with energy, when it is
intended to use the incident lighting. Therefore firstly you must connect the power
plug of the control device for lighting to a power socket. Afterwards you can
establish the connection between the microscope head (lefthand side) and the
control device by using the appropriate connection cable.
Additional optional attachments:
The eye cups supplied with the microscopes can be fitted to the eyepieces.
(see section 5.6).
You can fit a C-mount adapter to the appropriate connection point on the top
of the microscope head. This enables you to fit and use digital cameras
(remove protective cap first) (see section 5.9).

OZC-5-BA-e-1510 10
Assembled stereo zoom microscope

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5 Operation and functionality
5.1 Getting started
After assembly, if the microscope is ready for use, then for binocular use, you must
let the trinocular toggle rod on the back of the microscope stay slid-in.
For trinocular use (camera connection) see section 5.9.
All important functions which relate to the use of the devices in this document are
described in the following sections.
5.2 Adjust the interpupillary distance
Different users have different interpupillary distances. So each time a different person
uses the microscope, the gap between the two eyepieces must be re-adjusted.
While you are looking through the eyepieces, use one hand to hold the righthand or
lefthand prism housing firmly.
By rotating outwards or inwards, you can either increase or reduce the interpupillary
distance.
As soon as the lefthand and righthand visual fields exactly overlap each other, this is
the correct interpupillary distance.
5.3 Adjusting the magnification
As the KERN OZC-5 series are stereo zoom microscopes, then you adjust the
magnification using the two zoom adjustment wheels on the lefthand and righthand
side of the microscope head.
Chapter 6 “Optical data” gives information on the possible overall magnification which
the microscope can produce. It will also include the optional use of different
eyepiece.

OZC-5-BA-e-1510 12
5.4 Dioptre adjustment and focussing
A special feature of stereo microscopes is that they are fitted with an optical unit
which has a relatively high depth of field. In order to be able get the most benefit from
this feature, each user must synchronise the focussing mechanisms for themselves.
The steps to do this are described in the following section.
1. Place the object to be observed on the working surface under the objective.
2. Put both dioptre adjustment rings into the starting position of 0.
3. Use the zoom control dials to set the smallest possible magnification.
4. Look through the right eyepiece with the right eye and bring the object into focus
by using the focus control dials.
5. Now set the largest possible zoom factor.
6. Once again, still only looking through the right eyepiece, bring the object into
focus
7. Then set the smallest possible zoom factor again.
8. If the object then does not appear to be in focus, adjust the focus on the dioptre
adjustment ring of the right eyepiece.
9. In order to get the highest level of accuracy when adjusting the focus, you should
repeat steps 5-8.
10.Afterwards set back to the smallest possible zoom factor.
11.Then look through the left eyepiece with the left eye and use the lefthand dioptre
adjustment ring to also adjust the optimum focus of the object.
12.In this way, the object being observed will be in focus at any zoom setting.

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5.5 Adjusting the stand
Torque of the focus wheels
You adjust the torque of the focus wheels by holding one of the two wheels in place
and using the other hand to turn the other wheel.
Depending on the direction of the turn, the torque will be increased or decreased.
On one hand, this function can help to make it easier to adjust the focus and on the
other hand it can prevent the microscope head from slipping down unintentionally. In
this way you can avoid possible damage which could occur if the objective lens and
the object being observed should collide.

OZC-5-BA-e-1510 14
5.6 Using eye cups / High Eye Point eyepieces
The eye cups supplied with the microscope can basically be used at all times, as
they screen out intrusive light, which is reflected from light sources from the
environment onto the eyepiece, and the result is better image quality.
But primarily, if eyepieces with a high eye point (particularly suitable for those who
wear glasses) are used, then it may also be useful for users who don’t wear glasses,
to fit the eye cups to the eyepieces.
These special eyepieces are also called High Eye Point eyepieces. They can be
identified by the glasses symbol on the side. They are also marked in the item
description by an additional “H” (example: HSWF 10x Ø 23 mm).
When fitting the eye cups, make sure that the dioptre setting is not moved. We would
therefore advise that you hold the dioptre adjustment ring on an eyepiece with one
hand while you fit the eye cup with the other.
Before using the microscope, users who wear glasses must remove the eye cups,
which you may find on High Eye Point eyepieces.
As the eye cups are made of rubber, you must be aware that when you are using
them, they can become slightly dirty through grease residues. In order to maintain
hygiene, we would therefore recommend that you clean the eye cups regularly (e.g.
with a damp cloth).
Eye cups
High Eye Point eyepiece
(identified by the glasses symbol)

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5.7 Lighting control
For the Devices of the OZC-5 series there is the usage of an external power adapter
needed.
If the power connection is established, you can turn on the incident lighting by using
the on/off switche of the control device (see figure).
In addition the light intensity can be adjusted by turning the control wheel on the top
of the control device.
Control elements for the lighting unit

OZC-5-BA-e-1510 16
5.8 Using external illumination units
If, when using a microscope in its standard version, the lighting is not suitable for the
application, then it often makes sense to fit an external lighting unit to overcome this
problem.
The lighting units which are suitable for devices of the OZC-5 series, are goose neck
lighting units (see figure). These are available as LED as well as halogen versions
and also have an on/off switch or different controller.
Typical goose neck lighting unit
Using goose neck lighting units
Depending on the requirements, a goose neck lighting unit is placed next to, in front
of or behind the microscope. For halogen lighting units, the light source is in the
housing of the unit and is emitted through one or several optical fibre cables. For
LED units, on the other hand, it us usually at the end of the cable.
These cables are flexible and therefore offer a large number of positioning options,
so that the object being observed is perfectly illuminated.

17 OZC-5-BA-e-1510
5.9 Fitting and adjusting a camera
You can connect special microscope cameras and reflex cameras to trinocular
devices in the OZC-5 series, so that you can digitally record images or sequences of
objects being observed.
The connection for this is on the top side of the microscope head (see figure
above).
When the trinocular toggle rod is pulled out, the beam path, which normally emits
on the righthand eyepiece, is diverted in the tube, so that it can be used for the
camera adapter connection.
This means that when the device is used in trinocular mode, you will see one image
in the left eyepiece and one on the reflex camera or monitor of the microscope
camera.
This means that the 3D effect is lost.

OZC-5-BA-e-1510 18
To fit a microscope camera properly, you must use an adapter with a C-mount
thread, which is put in the adapter connection once the cap is removed.
In total there are three focusable adapters to choose from (see figure below). The
difference between these adapters is that they have different integrated magnification
(0.3x, 0.5x, 1.0x).
The camera and adapter are then united using the C-mount thread.
For special measuring applications in conjunction with a microscope camera, when
using the 1.0x C-mount, there is the option of screwing in a second adapter with an
integrated micrometre in front of the camera.
C-mount adapter
You also need an adapter to connect a reflex camera. But in contrast to the
microscope camera this does not have a C-mount thread, but has a bayonet
connection which fits directly on the camera objective.
There are also three different adapters to choose from. They all have a 1x
magnification and differ in the fact that they come from different camera
manufacturers. Canon, Nikon and Olympus cameras can be used for this.
The image which is shown on the camera connected to the device can often have a
different level of focus compared with the image on the eyepiece. In order to be able
to bring both images into focus, the focus can be adjusted by those adapters
when turning the attached black plastic ring.

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5.10 Using additional accessories
Angle table
Standard angle table Angle table for using transmitted light
For easier handling of an object to be observed, it can be useful to fit an additional
mechanical angle table on the working surface of a stereo microscope.
For devices without lighting you can use a standard angle table (see left figure).
However if there is an integrated transmitted lighting unit, you should use a special
angle table with transmitted light compatibility (see right figure).
As the figures show, both versions each have two coaxially positioned adjustment
wheels in the righthand rear corner of the table. This means that you can move it in
the x and y directions.
To fit this, the user must bore four holes through the surface of the stand base at
particular points on the edge of the recess for the stand inlay. Then the screws
included with the table can be used to fix the table from the underside.
A user guide is included with the delivery of each angle table which contains the
precise instructions on how to fit it. We strongly recommend that you follow these
instructions closely, to make sure that you will be able to use the angle table without
problems.