Optika Italy OPTIGEM Series User manual

Ver. 1.0 2021
INSTRUCTION MANUAL
OPTIGEM Series
Model
OPTIGEM-10
OPTIGEM-20

Page 2
Table of contents
1. Warning 3
2. Safety Information 3
3. Package content 4
3.1 OPTIGEM 10 4
3.2 OPTIGEM 20 5
4. Unpacking 6
5. Intended use 6
6. Symbols and conventions 6
7. Instrument description 7
7.1 OPTIGEM 10 7
7.2 OPTIGEM 20 9
8. Assembling 11
9. Use of the microscope 13
9.1 Adjusting interpupillary distance 13
9.2 Focusing 13
9.3 Adjusting the tension of the focus knob 13
9.4 Diopter compensation 13
9.5 Magnication 14
9.6 Switching on illumination 14
9.7 Use of illumination 15
9.8 Use of the stand in horizontal position 16
10. Use of optional accessories 17
10.1 Darkeldanalysis 17
10.2 Polarized light analysis 18
10.3 Polarizedlight+Darkeldanalysis 18
10.4 Immersion analysis with translating holder 19
10.5 Immersion analysis with translating holder and vacuum pick up 20
10.6 Immersion and polarization analysis with translating holder 20
11. Microphotography 22
11.1 Installing the C-mount adapter 22
11.2 Useofreexcameras 22
12. Maintenance 23
13. Troubleshooting 24
Equipment disposal 25

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1. Warning
This microscope is a scientic precision instrument designed to last for many years with a minimum of maintenance. It
is built to high optical and mechanical standards and to withstand daily use. We remind you that this manual contains
important information on safety and maintenance, and that it must therefore be made accessible to the instrument users.
We decline any responsibility deriving from incorrect instrument use uses that does not comply with this manual.
2. Safety Information
Avoiding Electrical Shock
Before plugging in the power 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 have full responsibility to use this equipment safely. Please
follow the guidelines below, and read this manual in its entirety to ensure safe operation of the unit.

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3. Package content
3.1 OPTIGEM 10
① Microscopestand
② Binocularmicroscopebody
③ Eyepieces
④ Jewelclip
⑤ Dustcover
⑥ Powersupply
③
④
①
②
⑤
⑥

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① Microscopestand
② Trinocularmicroscopebody
③ Eyepieces
④ Jewelclip
⑤ Dustcover
⑥ Powersupply
③
④
①
②
3.2 OPTIGEM 20
⑤
⑥

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4. Unpacking
The microscope is housed in a moulded Styrofoam container. Remove the tape from the edge of the container and lift the
top half of the container. Take some care to avoid that the optical items (objectives and eyepieces) fall out and get dam-
aged. Using both hands (one around the arm and one around the base), lift the microscope from the container and put it
on a stable desk.
Do not touch with bare hands optical surfaces such as lenses, lters or glasses. Traces of grease or other
residuals may deteriorate the nal image quality and corrode the optics surface in a short time.
5. Intended use
Standard models
For research and teaching use only. Not intended for any animal or human therapeutic or diagnostic use.
IVD Models
Also for diagnostic use, aimed at obtaining information on the physiological or pathological situation of the subject.
6. Symbols and conventions
The following chart is an illustrated glossary of the symbols that are used in this manual.
CAUTION
This symbol indicates a potential risk and alerts you to proceed with caution.
ELECTRICAL SHOCK
This symbol indicates a risk of electrical shock.

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7. Instrument description
7.1 OPTIGEM 10
KOOM KNOB
EYEPIECE
DIOPTER
COMPENSATION
RING
MICROSCOPE BODY
ILLUMINATION
SELECTOR KNOB
INCIDENT LIGHT
ILLUMINATOR WITH
FLEXIBLE ARM
FOCUS KNOB
SUPPORT FOR
HORIZONTAL
OBSERVATION
ON/OFF - LIGHT
INTENSITY
ADJUSTMENT KNOB
MAIN SWITCH

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Opposite side
TILTING KNOB
VELVET DARKFIELD
SLIDER
TRANSMITTED
LIGHT ILLUMINATOR
JEWEL CLIP
DARK FIELD
ILLUMINATOR

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7.2 OPTIGEM 20
KOOM KNOB
EYEPIECE
DIOPTER
COMPENSATION
RING
MICROSCOPE BODY
ILLUMINATION
SELECTOR KNOB
INCIDENT ILLUMINATOR
WITH FLEXIBLE ARM
FOCUS KNOB
SUPPORT FOR
HORIZONTAL
OBSERVATION
ON/OFF - LIGHT
INTENSITY
ADJUSTMENT KNOB
MAIN SWITCH
PHOTO/TV PORT

Page 10
Opposite side
TILTING KNOB
VELVET DARKFIELD
SLIDER
TRANSMITTED LIGHT
ILLUMINATOR
JEWEL CLIP
DARK FIELD
ILLUMINATOR

Page 11
FFig. 1ig. 1
FFig. 3ig. 3
FFig. 2ig. 2
①
8. Assembling
4. Remove the dust caps from the eyepiece sleeves and insert
the eyepieces. (Fig. 3)
5. Connect the jack of the power supply to the socket in the rear
part of the microscope base. (Fig. 4)
FFig. 4ig. 4
1. Remove the base from its packaging and place it on a at
surface. The base is already assembled from the factory and
does not require any further assembly procedure other than
that of mounting the microscope body.
2. Insert the microscope body in the holder. (Fig. 1)
3. Lock the xing knob ①. (Fig. 2)

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6. Insert the jewel clip in one of the three threaded holes on the
stage. (Fig. 5)
FFig. 7ig. 7
Installing the photo port (OPTIGEM-20)
1. Loosen the xing screws ① of the supplied photo port and
remove the existing photo port. (Fig. 6)
②
③
FFig. 6ig. 6
①
①
①
FFig. 5ig. 5
②
2. Insert the ring of the photo port ② making sure to leave the
fixing screw of the photo adapter ③ facing right. (Fig. 7)
3. Lock the xing screws ①. (Fig. 6)

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9. Use of the microscope
FFig. 8ig. 8
FFig. 9ig. 9
FFig. 11ig. 11
①
FFig. 10ig. 10
HOLD INCREASE
DECREASE
②
9.1 Adjusting interpupillary distance
Hold the right and left eyepiece tube with both hands and adjust
the interpupillary distance by moving the two parts until one circle
of light can be seen. (Fig. 8)
• If two circles appear, the interpupillary distance is too big.
• If two overlapped circles appear, the interpupillary distance
is too small.
9.2 Focusing
Put the sample to be observed on the stage plate and focus the
sample using the focusing knobs ①. (Fig. 9)
9.3 Adjusting the tension of the focus knob
• This adjustment allows to increase or decrease the ten-
sion of the knob by avoiding an involuntary descent of
the microscope body under its own weight. Adjust the
tension just above the point where the focus is stable.
Grab the knobs ② with both hands and, while holding the left
knob, turn the right knob.
• The tension increases or decreases depending on the direc-
tion of rotation of the right knob. (Fig. 10)
9.4 Diopter compensation
• This compensation makes possible for users wearing
glasses to adjust the microscope to their eyes and use
the microscope without glasses.
1. Put the zoom down to the lowest magnication using the
zoom knob ③ and focus the specimen with the focusing
knobs ④. (Fig. 11)
2. Put the zoom to the maximum magnication and repeat the
focusing.
3. Return to the lowest magnication: the specimen will be out
of focus. ③
④
①

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4. Adjust the diopter compensation ring of the right eyepiece
⑤ (Fig. 12) until the image of the right eyepiece is clear and
sharp. Repeat the procedure for the left eyepiece.
5. Check the focus of the image for the whole zoom range. It
should be perfectly parfocal (focus is maintained during the
change of magnication).
FFig. 12ig. 12
⑤
FFig. 13ig. 13
FFig. 14ig. 14
9.5 Magnication
Select the desired magnication by rotating the zoom knob.
• The microscope body is equipped with a “magnication lock”
function that allows to obtain a precise setting of the desired
magnication. Magnication lock can be activated or deacti-
vated by operating with the provided Allen wrench in the hole
⑥ placed in front of the microscope body. (Fig. 13)
9.6 Switching on illumination
1. Set the main switch ① (located on the left side of the base)
to the “I” position to power the base. (Fig. 14)
⑥
FFig. 15ig. 15
②
2. Turn the knob ② (on the right side of the base) to switch
the lighting on/off and to increase/decrease the light intensity.
(Fig. 15)
①

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9.7 Use of illumination
The OPTIGEM microscope comes with an integrated LED illumi-
nation system that consists of three separate light sources:
1. Incident illumination: through a exible arm attached to the
microscope stage.
2. Transmitted illumination: from the hole of the microscope
stage.
3. Darkeld illumination: a LED ring inside the stage hole.
By turning the switch ③ on the left side of the base (Fig. 16), the
different observation methods can be selected. FFig. 16ig. 16
FFig. 17ig. 17
The transmitted light illumination has an additional option: the
slider ④ (Fig. 18) allows observation in bright eld (a) or “velvet”
dark eld (b) (Fig. 19) by simply moving the slider to the left or
to the right.
③
The switch has four available position (Fig. 17):
a) Transmitted light illumination
b) Darkeld illumination
c) Darkeld illumination combined with Incident illumination
d) Incident light illumination
FFig. 18ig. 18
FFig. 19ig. 19
④
(a) (b)
a) b) c) d)

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9.8 Use of the stand in horizontal position
The OPTIGEM microscope stand can easily be tilted in order to
observe objects in a horizontal position.
1. Loosen the head xing knob (Fig. 2) and rotate the head by
180°.
2. Fix the screw again.
3. Loosen the stand tilting knob ① (Fig. 20) and rotate the stand
by 180° (make sure that the power cable has not been twist-
ed too many turns around the base).
4. Lean the stand backwards until it gets stopped by the support
② and the microscope is in the position of gure 21.
FFig. 21ig. 21
FFig. 20ig. 20
①
②

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10. Use of optional accessories
FFig. 22ig. 22
FFig. 23ig. 23
FFig. 24ig. 24
10.1 Darkeldanalysis
• ST-201 is needed.
1. Place rods and spacers as shown in Fig. 22.
2. Put the ST-201 on the microscope stage, aligning the holes
in the stage with the holes in the ST-201.
3. Put one rod from the bottom of the stage, as shown. (Fig. 23)
4. Screw one spacer on the rod, from the top (Fig. 24). Repeat
the same steps for the other rod.
A wide range of accessories are available for the OPTIGEM microscope: gemology clips, an iris aperture diaphragm, a
polarization analysis kit, an optical unit to switch the dark eld 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 instrument
usability.
All the accessories can be individually used or combined in a stack, in any order, both when the microscope is being used
in horizontal position or when it is in vertical position.
Below some possible congurations for common uses are illustrated.

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FFig. 25ig. 25
FFig. 26ig. 26
FFig. 27ig. 27
FFig. 28ig. 28
5. Switch on the LED ring illuminator (position “b”, Fig. 17).
• If you want it is possible to put your gem directly on the dia-
phragm, after closing it to a proper diameter. (Fig. 25)
10.2 Polarized light analysis
• ST-202 is needed.
1. Repeat steps 1-4 of chapter 10.1 for the installation of ST-
202. (Fig. 26)
2. Screw the analyzer on the bottom of the microscope body.
(Fig. 27)
3. Holding your sample with the jewel clip, you can rotate both
the polarizer and analyzer to perform polarization analysis.
10.3 Polarizedlight+Darkeldanalysis
• ST-201 + ST-202 are needed.
1. Install ST-201 as described in chapter 10.1.
2. Screw another spacer on both rods.
3. Stack ST-202 and x it with another spacer. (Fig. 28)
4. Screw the analyzer on the bottom of the head. (Fig. 27)
5. Holding your sample with the jewel clip, you can rotate both
the polarizer and analyzer to perform polarization analysis.

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FFig. 29ig. 29
FFig. 30ig. 30
FFig. 31ig. 31
FFig. 32ig. 32
10.4 Immersion analysis with translating holder
• ST-203 + ST-204 + ST-207 are needed.
1. Install ST-207 as described in chapter 10.1. (Fig. 29)
2. Stack translating holder ST-204 and x it with another spac-
er. (Fig. 30)
3. Rotate the microscope into horizontal position. (Fig. 31)
4. Put the immersion cell (ST-203) on the holder’s plate. (Fig.
32)

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5. Install the jewel clip on the vertical rod, in order to hold the
sample inside the immersion cell. (Fig. 33)
FFig. 33ig. 33
FFig. 34ig. 34
FFig. 35ig. 35
FFig. 36ig. 36
10.5 Immersion analysis with translating holder and vac-
uum pick up
• ST-203 + ST-204 + ST-207 + ST-205 are needed.
1. Install the accessories as described in chapter 10.4.
2. Insert the adapter for the vacuum pick-up pen on the vertical
rod. (Fig. 34)
3. Switch on the vacuum pump by pressing the black button.
(Fig. 35)
4. Pick up the gem with vacuum by placing it in contact with the
rubber point of the pick-up pen.
10.6 Immersion and polarization analysis with translating
holder
• ST-202 + ST-203 + ST-204 are needed.
1. Install ST-202 as described in chapter 10.1.
2. Screw the analyzer on the bottom of the head. (Fig. 27)
3. Stack the translating holder and x it with the spacers. (Fig.
36)