Optika OPTIGEM User manual

microscopes
i T A L Y
OPTIKA MICROSCOPES - ITALY
www.optikamicroscopes.com - [email protected]
Ver. 4.1.0
OPTIGEM
OPERATION MANUAL
MANUAL DE INSTRUCCIONES

Page 2
INDEX
1.0 DESCRIPTION page 3
2.0 INTRODUCTION page 5
3.0 UNPACKING AND ASSEMBLY page 5
4.0 USING THE MICROSCOPE page 5
4.1 Illumination system
4.2 Adjust interpupillary distance
4.3 Mounting the jewellery clip
4.4 Focus and regulation of the focusing tension
4.5 Dioptric compensation
4.6 Magnification and working distance
4.7 Observing objects in horizontal position
5.0 OPTIONAL ACCESSORIES page 7
6.0 MAINTENANCE page 9
6.1 Microscopy environment
6.2 To think about when and after using the microscope
6.3 Electrical safety precautions
6.4 Cleaning the optics
7.0 TECHNICAL SPECIFICATIONS page 9
8.0 RECOVERY AND RECYCLING page 10
9.0 APPENDIX 1 – USING THE OPTIONAL ACCESSORIES page 11

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1.0 DESCRIPTION
Light path
seLector Lever
Dioptric
compensation
photo/viDeo capturing
tube
biLateraL
zoom knob
stage
brightness controL
trinocuLar
stereo heaD
objectives
Fig. 1: OPTigEM: righT sidE viEw
jeweLry cLip
eyepiece
Focusing
carrier
stanD
base

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1.0 DESCRIPTION
tiLting knob
veLvet Dark FieLD
sLiDer
inciDent iLLuminator
with FLexibLe arm
Focusing knob with
tension controL
Fig. 2: OPTigEM: lEFT sidE/back viEw
Lock screw
Dark FieLD
iLLuminator
transmitteD Light
iLLuminator
support For
horizontaL
viewing
aDapter
power cabLe
power switch
iLLumination
seLector knob

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The microscope OPTIGEM is a scientific precision instrument that has been developed especially
for professional gemmological use. It has been built to high optical and mechanical standards to
withstand many years of daily laboratory use.
The advanced illumination system, using combinations of transmitted, incident and dark field LED
illumination, allows a thorough and complete analysis of the surface of the object. The microscope
body and head can be rotated 360° and the stand can be inclined 90° to switch between vertical and
horizontal position which gives a large flexibility observation.
The stereoscopic head of the microscope is equipped with two separate optical systems that give an
excellent field depth to the image and is also fitted with a continuous zoom system with a span from
0.7x to 4.5x. The trinocular port of the head offers the possibility to attach a photo or video camera
in order to view and elaborate the microscope image on a TV or computer monitor.
Optika reminds you that this manual contains important information on safety and maintenance, and
that it must therefore be made accessible to the instrument users.
Optika declines any responsibility deriving from instrument uses that do not comply with this ma-
nual.
2.0 INTRODUCTION
The microscope is delivered assembled and ready for use. Remove it from the wooden case,
and place it on a solid table.
4.1 Illumination system
The OPTIGEM microscope comes with an integrated LED illumination system that consists
of three separate light sources:
• Incident illumination: through a flexible arm attached to the microscope stage.
• Transmitted illumination: from the hole of the microscope stage.
• Dark field illumination: a LED ring on the inside of the hole of the stage.
Before starting, read the section 6.3 about electrical safety precautions. Then, insert the power cord
into the microscope, the power adapter to the electrical net and switch on the instrument on the back
of the microscope.
Use the illumination selector knob to change between different illumination combinations and use
the brightness control to modify the light intensity.
The velvet dark field slider can be inserted, if needed, to increase the contrast of the dark field.
veLvet Dark FieLD
sLiDer
3.0 UNPACKING AND ASSEMBLY
support For
horizontaL
viewing
iLLumination
seLector knob
4.0 USING THE MICROSCOPE

Page 6
4.2 Adjust interpupillary distance
Hold the right and left parts of the observation head by both hands and adjust the interpu-
pillary distance by moving the two parts until one circle of light can be seen. If two circles
appear, the interpupillary distance is too big, and if two overlapped circles appear, the inter-
pupillary distance is too small.
4.3 Mounting the jewellery clip
The jewellery clip can be mounted in one of three different holes on the stage plate: one
in the front and one on each side. Once attached, the object to examine can be placed in
the jewellery clip.
4.0 USING THE MICROSCOPE
4.4 Focus and regulation of the
focusing tension
Turn the zoom to the highest magnification
using the bilateral zoom knob. Try to focus the
sample using the focusing knobs.
The tension of the focusing knob can be adju-
sted by rotating the right focusing knob kee-
ping still the left focusing knob.
4.5 Dioptric compensation
This compensation makes it possible for
people with glasses to adjust the microscope
to their eyes and use the microscope without
glasses. Turn the zoom down to the lowest
magnification.
Adjust the dioptre compensation ring of the right eyepiece tube until the image of the right
eyepiece is clear and sharp. Repeat the procedure for the left eyepiece. Then, check the
focus of the image for the whole zoom range. It should now be perfectly parfocal (focus is
always maintained during the change of magnification).
4.6 Magnification and working distance
The jewellery clip can be mounted in one of three different holes on the stage plate: one
in the front and one on each side. Once attached, the object to examine can be placed in
the jewellery clip.
Select the desired magnification by adjusting the bilateral zoom knob. Change the eyepie-
ces and/or add an appropriate magnifying objective lens if necessary. The total magnifica-
tion used can be calculated by the following equation:
Total magnification = Eyepiece magnification x Zoom magnification x Objective lens magni-
fication
Normal working distance for the standard configuration (1x objective lens) is 95 mm.

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5.1 Available accessories
A wide range of accessories are available for the OPTIGEM microscope: gemmology clips,
an iris aperture diaphragm, a polarization analysis kit, an optical unit to switch the dark field
from a “sharp” (gem exhibition) to a “soft” (diamond analysis) mode and a translating cell
holder with vacuum pick-up and quartz immersion cells complete and enhance the instru-
ment usability.
Please contact Optika Microscopes for more information and a complete list of accessories.
Fig. 5: Accessories
4.0 USING THE MICROSCOPE
4.7 Observing objects in horizontal
position
The OPTIGEM microscope stand
can easily be tilted in order to ob-
serve objects in a horizontal position
(see fig. 4).
To do this: Loosen the lock screw of
the head and rotate the head 180°.
Fix the screw again. Loosen the til-
ting knob (counter clockwise) and ro-
tate the stand 180° (make sure that
the power cable has not been win-
ded too many turns around the base)
lean it backwards until it gets stopped
by the support and the microscope is
in the position of figure 4.
Fig. 4: Horizontal position
5.0 OPTIONAL ACCESSORIES

Page 8
5.2 Video capturing (optional)
The OPTIGEM is fitted with a trinocular stereo head. The third port can be connected to ca-
meras (in some cases via an adaptor) for digital and analogical photo and video capturing.
Before taking a picture or filming video, pull out the light path selector lever so the light will
be deflected into the photo tube. At the same time, no light will enter into the left eyepiece
tube for observation. Please refer to the adaptor and camera manuals for further details.
5.3 Assembling the accessories plates (optional)
All the accessories can be assembled one and one or combined in a stack, in any order,
both when the microscope is being used as a horizontal unit and when it is in its vertical
configuration (see fig. 6-9).
This is made by attaching the plate/s to the two holes in the stage plate and fixing them with
the included screws and spacers.
The polarizing analysis kit comes with a polarizer and an analyser. The polarizer should be
mounted on the stage as explained above and the analyser should be screwed onto the
objective holder of the stereo head, first removing the ring that is already attached.
For more information about using the optional accessories, please see Appendix 1.
Fig. 6: iris aperture
Diaphragm For Dark
FieLD use
Fig. 7: poLarizing
anaLysis kit
Fig. 8: transLating
ceLL hoLDer with
vacuum pick-up anD
quartz immersion
ceLL
Fig. 9: transLating
ceLL hoLDer in use
with Dark FieLD iL-
Lumination
5.0 OPTIONAL ACCESSORIES

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6.0 MAINTENANCE
6.1 Microscopy environment
This microscope is recommended to be used in a clean, dry and shock free environment
with a temperature of 0-40°C and a maximum relative humidity of 85 % (non condensing).
Use a dehumidifier if needed.
6.2 To think about when and after using the microscope
•The microscope should always be held formly when moving it. Take care that no
moving parts, such as the eyepieces, fall out.
•Never mishandle or impose unnecessary force on the microscope.
•Never attempt to service the microscope yourself.
•After use, turn off the light immediately, cover the microscope with the included dust-
cover, and keep it in a dry and clean place.
6.3 Electrical safety precautions
•Before plugging in the power cord with the supply, make sure that the supplying voltage of
your region matches with the operation voltage of the equipment and that the lamp switch is
in off-position.
•Users should observe all safety regulations of the region. The equipment has acquired the
CE safety label. However, users do have full responsibility to use this equipment safely.
6.4 Cleaning the optics
•If the optical parts need to be cleaned try first to: use compressed air.
•If that is not sufficient: use a soft lint-free piece of cloth with water and a mild detergent.
•And as a final option: use the piece of cloth moistened with a 3:7 mixture of ethanol and
ether.
Note: ethanol and ether are highly flammable liquids. Do not use them near a heat source,
near sparks or near electric equipment. Use these chemicals in a well ventilated room.
•Remember never to wipe the surface of any optical items with your hands. Fingerprints can
damage the optics.
•Do not disassemble objectives or eyepieces in attempt to clean them.
Universal Power Transformer: Input: 230 V, 50 Hz
Output: 12V DC, 1000 mA
Bulbs: High power LEDs
7.0 TECHNICAL SPECIFICATIONS

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8.0 RECOVERY AND RECYCLING
Art.13 Dlsg 25 july 2005 N°151. “According to directives 2002/95/EC, 2002/96/EC and 2003/108/EC
relating to the reduction in the use of hazardous substances in electrical and electronic equipment
and waste disposal.”
The basket symbol on equipment or on its box indicates that the product at the end of its useful life
should be collected separately from other waste.
The separate collection of this equipment at the end of its lifetime is organized and managed by
the producer. The user will have to contact the manufacturer and follow the rules that he adopted
for end-of-life equipment collection. The collection of the equipment for recycling, treatment and en-
vironmentally compatible disposal, helps to prevent possible adverse effects on the environment
and health and promotes reuse and/or recycling of materials of the equipment. Improper disposal
of the product involves the application of administrative penalties as provided by the laws in force.

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9.0 APPENDIX 1 – USING THE OPTIONAL ACCESSORIES
All the accessories can be assembled one and one or combined in a stack, in any order, both when
the microscope is being used as a horizontal unit and when it is in its vertical configuration.
We describe here some possible configurations for common uses.
ST-201 Iris aperture diaphragm for darkfield
ST-202 Polarizing analysis kit

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9.0 APPENDIX 1 – USING THE OPTIONAL ACCESSORIES
ST-203 Quartz immersion cell and ST-204 Translating cell holder
ST-205 Vacuum pick-up (with electric vacuum pump)

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9.0 APPENDIX 1 – USING THE OPTIONAL ACCESSORIES
ST-207 Iris aperture diaphragm for standard illuminator
Rods and spacers for assembling

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9.0 APPENDIX 1 – USING THE OPTIONAL ACCESSORIES
SET 1: Darkfield illumination
• you need: ST-201
Prepare the rods and spacers as in the following picture:
Put the ST-201 on the microscope stage, in correspondence with the two holes near the stand. Put
one rod from the bottom of the stage, as showed:

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Screw one spacer on the rod, from the top. Repeat the same steps for the other rod:
Switch on the LED ring illuminator. If you want it is possible to put your gem directly on the diaphragm,
after closing it to a proper diameter:
Or, you can use the side clip to hold your object. In order to use the clip, first screw the black plastic
adaptor into the microscope stage (there is a threaded hole on both sides of the stage):
9.0 APPENDIX 1 – USING THE OPTIONAL ACCESSORIES

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9.0 APPENDIX 1 – USING THE OPTIONAL ACCESSORIES
Then, push the clip onto the adaptor, in order to fix it in position:
SET 2: Polarization analysis
•you need: ST-202
Mount the polarizer of the ST-202 in the microscope stage, as described above in SET 1:
Screw the analyzer on the bottom of the head, as shown:

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Holding your sample with the side clip, you can rotate both the polarizer and analyzer to perform
polarization analysis.
SET 3: Polarization and darkfield analysis
• you need: ST-201 and ST-202
Mount the ST-201 darkfield diaphragm on the stage, as described in SET 1.
Then screw another spacer on both rods. Place the polarizer of ST-202 on the stack, and fix it with
two spacers, as in the following picture:
Screw the analyzer on the bottom of the head, as shown:
9.0 APPENDIX 1 – USING THE OPTIONAL ACCESSORIES

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Switch on the LED ring illumination.
Holding your sample with the side clip, you can rotate both the polarizer and analyzer to perform
polarization analysis. You can also open/close the diaphragm to adjust darkfield illumination:
SET 4: Immersion analysis with translating holder
• you need: ST-203 ST-204 and ST-207
Mount the iris diaphragm ST-207 on the stage, as described in SET 1:
9.0 APPENDIX 1 – USING THE OPTIONAL ACCESSORIES

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Put the translating holder ST-204 on the stack and fix it with a couple of spacers:
Now rotate the microscope into its horizontal position:
9.0 APPENDIX 1 – USING THE OPTIONAL ACCESSORIES

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Put the immersion cell ST-203 on the holder’s plate:
Mount the clip on the vertical rod, in order to hold your object inside the cell:
9.0 APPENDIX 1 – USING THE OPTIONAL ACCESSORIES