Optika OPTIGEM-10 Data sheet [EN]

GEM Series
OPTIKA
MICROSCOPES
®
ITALY
Inspection & Industrial
Stereozoom Microscopes For Gemology
GEM Series
Inspection & Industrial
As a leading company in the supply of gemological microscopes, OPTIKA offers a series of microscopes purposely designed for this sector by using both brightfield and darkfield methods OPTIGEM-10 and OPTIGEM-20. This series has been designed and manufactured in order to satisfy the requests of a very demanding industry; brightfield/darkfield, immersion analysis, light color tem­perature: no detail has been left to chance.
Specifically Designed for Specialists
Gemological stereomicroscopes are meant to help with stone inspection. Jewels and gems have a variety of grades (or quality levels), which ultimately influence their value and cost on the market; therefore it is important to have solutions that are purposely designed for gemology. These stereomicroscopes are equipped with iris and darkfield condenser on the bottom light source, and with a set of on stage tweezers to hold the stone in place.
Much More Than Gemological Stereomicroscopes
OPTIGEM-10 & OPTIGEM-20 are two-in-one gemology instruments that can be used both in
vertical and horizontal position in a very easy way, just by turning one knob (no disassembling and re-assembling operations are required). The horizontal position extends the use of a gemological microscope, giving the possibility to perform immersion analysis by submerging a sample in liquid. If the stone’s refractive index is close to the liquid’s one, immersion makes the interior more visible by reducing the effects of refraction and surface reflection. This enables you to see a gem’s inclusions or color distribution more easily. Immersion is also necessary to see crystal growth structures, which might help you separate natural from synthetic corundum. Features like curved growth striae in flame-fusion synthetics, or separation planes in assembled stones, are often far easier to see when the stone is immersed.
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Vertical position for standard gem
analysis with darkfield illumination
and polarizing tecnique
Incredibly Versatile Operations
OPTIGEM Series offers multiple options for illumination and contrast techniques, such as
incident, transmitted and oblique brightfield darkfield, polarization and immersion analysis only on Optigem 10 & 20. They come with a special optical condenser configuration to ensure real, perfect darkfield application (see the dedicated chapter for further information).
Horizontal position for
immersion gem analysis
Stereozoom Microscopes For Gemology
Ultrabright LED Condenser for Optimized Illumination
An ultrabright LED-based electronic condenser with intensity control allows to switch from brightfield to darkfield; it also produces perfectly the colour of daylight. The condenser uses a new optical configuration especially created in order to obtain a perfect darkfield application.
With darkfield observation, the unscattered beams from the image are excluded: as a result, the field around the specimen is generally dark. An additional flexible arm and velvet-field slider produce extra contrast for crisp and vibrant images. The illumination of OPTIGEM microscopes is greatly performing and this brings this series to be ideal for precious stones and jewels evaluation.
Inspection & Industrial
Get the most out of our accessories
A wide range of optional accessories completes these instruments: from gemology clip, iris aperture diaphragm, polarization analysis kit, optical unit to switch the darkfield from a “sharp” (gem exhibition) to a “soft” (diamond analysis) mode, translating cell holder with vacuum pick-up and quartz immesion cells complete and enhance the OPTIGEM-10 & OPTIGEM-20 performances. All the accessories can be stacked, in any order, while using the microscope both horizontally and vertically.
ST-202
ST-202 - Polarizing analysis kit
Polarization technique allows to quickly determine if the stone at hand is isotropic or anisotropic or, at best, to determine the optic character of gemstones (twin planes, strain, pleochroism, etc.). It is also the preferred tool for separating synthetic Quartz from its natural counterparts. In addition, the polarizing microscope may be very useful for distinguishing solid inclusions from negative inclusions as well as for spotting polysynthetic twinning.
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Inspection & Industrial
Applications
Some application examples demonstrating the performance of OPTIGEM Series, especially designed to observe samples of precious stones and jewels and provided with specific features for gemological needs.
Legend
1. Inspection of stones with OPTIGEM-10.
2. Inspection of stones with pure white darkfield illumination.
3. Immersion cell (ST-203) on a translating support (ST-204).
4. Sample of Citrine.
5. ST-201 accessory creates a soft darkfield illumination ideal for diamond analysis.
6. Optigem can be easily rotated to a horizontal working position.
7. ST-201 accessory for analysis under polarized light.
8. Working with Optigem and its accessories (they can be stacked for increased functionality).
GEM Series
1
3
2
322322
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Inspection & Industrial
4
5
7
8
6
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GEM Series - OPTIGEM10 model
Binocular gemological stereomicroscopes for brightfield and darkfield applications with special side-emitting LED illumination ring for true darkfield illumination. Equipped also with 4 incident LED flexible arm and a diffusive LED disc for transmitted illumination. The instru ment can be easily tilted horizontally for immersion analysis.
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Inspection & Industrial
0.7x÷4.5x
X-LED
3W LED
4W LED
DFDF
AB030
Part Description
Observation mode: Brightfield, darkfield. Heads Binocular, 45° inclined, 360° rotating. Interpupillary distance: Dioptric adjustment: On both eyepiece tubes. Eyepieces: WF10x/21 mm, high eye-point. Objective: Working distance: Specimen stage: Focusing: Stand:
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Adjustable between 51 and 75 mm
Parfocal achromatic zoom 0.7x...4.5x (zoom factor 6.43:1). 100 mm Gemological stage, with clamp for holding gems. Rack and pinion mechanism controlled by a pair of knobs. Fixed arm stand with tilting system (with position lock control).
It can be totally overturned and rotated allowing in this way to obtain a 2-in-one instrument: an instrument for standard observations and one for obser vation of water-immersed gems.
Part Description
Darkfield illumination:
Transmitted light llumination:
Incident illumination:
Color temperature:
Equipped with a state-of-the-art illuminator for darkfield observation. It consist of an innovative side­emmiting LEDs ring with an emission angle of 38°. With brightness control.
Equipped with a LED illuminator, located under the stage. With brightness control.
Equipped with a flexible gooseneck-arm 4-LED illuminator. With brightness control.
Pure white 6,300 K
GEM Series - OPTIGEM20 model
Trinocular gemological stereomicroscopes for brightfield and darkfield applications with special side-emitting LED illumination ring for true darkfield illumination. Equipped also with 4 incident LED flexible arm and a diffusive LED disc for transmitted illumination. The instru ment can be easily tilted horizontally for immersion analysis.
21
0.7x÷4.5x
X-LED
3W LED
4W LED
Inspection & Industrial
DFDF
AB030
Part Description
Observation mode: Brightfield, darkfield. Heads Trnocular, 45° inclined, 360° rotating. Interpupillary distance: Dioptric adjustment: On both eyepiece tubes. Eyepieces: WF10x/21 mm, high eye-point. Objective: Working distance: Specimen stage: Focusing: Stand:
Adjustable between 51 and 75 mm
Parfocal achromatic zoom 0.7x...4.5x (zoom factor 6.43:1). 100 mm Gemological stage, with clamp for holding gems. Rack and pinion mechanism controlled by a pair of knobs. Fixed arm stand with tilting system (with position lock control).
It can be totally overturned and rotated allowing in this way to obtain a 2-in-one instrument: an instrument for standard observations and one for obser vation of water-immersed gems.
Part Description
Darkfield illumination:
Transmitted light llumination:
Incident illumination:
Color temperature:
Equipped with a state-of-the-art illuminator for darkfield observation. It consist of an innovative side­emmiting LEDs ring with an emission angle of 38°. With brightness control.
Equipped with a LED illuminator, located under the stage. With brightness control.
Equipped with a flexible gooseneck-arm 4-LED illuminator. With brightness control.
Pure white 6,300 K
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GEM Series - Comparison chart
Model Head Eyepieces Objective Stand Illumination
OPTIGEM-10 Binocular,
360° rotating, 45° inclined
OPTIGEM-20 Trinocular,
360° rotating,
Inspection & Industrial
45° inclined
Wide Field 10x/21mm
Wide Field 10x/21mm
0.7 .... 4.5x
Zoom
0.7 .... 4.5x
Zoom
Gemological stand
Gemological stand
Incident illumination: 4 LED exible arm with brightness adjustment. Transmitted illumination: Diusive LED disc for obser vation in brighteld and
side-emitting LED ring for observation in darkeld.
Incident illumination: 4 LED exible arm with brightness adjustment. Transmitted illumination:Diusive LED disc for obser vation in brighteld and
side-emitting LED ring for observation in darkeld.
GEM Series - Optical Performance
OPTIGEM-10 / OPTIGEM-20 - Optical performance
Eyepiece 10x (ST-081) 15x (ST-082) 20x (ST-083)
Field number (mm)
Objective Total magnication Field of View (mm) Total magnication Field of View (mm) Total magnication Field of View (mm)
0.5x (W.D. 165 mm)
0.75x (W.D. 117 mm) 5.25x-33.75x 40.00-6.22 7.875x-50.625x 28.57-4.44 10.50x-67.5x 19.05-2.96
1x (W.D. 100 mm) 7x-45x 30.00-4.66 10.5x-67.5x 21.43-3.33 14x-90x 14.29-2.22
1.5x (W.D. 47 mm) 10.50x-67.5x 20.00-3.11 15.75x-101.25x 14.29-2.22 21x-135x 9.52-1.48
2x (W.D. 33 mm) 14x-90x 15.00-2.33 21x-135x 10.71-1.67 28x-180x 7.14-1.11
3.5x-22.5x
21 15 10
60.00-9.23 5.25x-33.75x 42.86-6.67 7x-45x 28.57-4.44
GEM Series - Contrast method comparison
Citrine - OPTIGEM-20 - 0.7x zoom - Brightfield
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Citrine - OPTIGEM-20 - 0.7x zoom - Darkfield
GEM Series - Accessories
Eyecups & Eyepieces
ST-081 EW10x/21 eyepieces (pair), high eyepoint, with rubber cup ST-082 WF15x/15 eyepieces (pair), high eyepoint ST-083 WF20x/10 eyepieces (pair), high eyepoint ST-084 WF10x/21 micrometric eyepiece, high eyepoint, with rubber cup
Additional Lenses
ST-086 Additional lens 1.5x (w.d. 45mm) ST-087 Additional lens 2x (w.d. 33mm)
Condenser & Filters
ST-202 Polarizing analisys kit
Camera Adapters
M-113.1 Ring adapter, 30mm (for monocular and binocular microscopes) M-115 0.35x C-Mount projection lens M-114 0.5x C-Mount projection lens M-118 0.75x C-Mount projection lens M-173 C-Mount projection lens for APS-C/full frame reflex cameras (trino) M-699 Universal adapter for C-Mount projection lens (trino) M-620 0.35x focusable C-Mount adapter M-620.1 0.5x focusable C-Mount adapter M-620.2 0.65x focusable C-Mount adapter M-620.3 1x focusable C-Mount adapter
Miscellaneous
15104 Cleaning kit DC-002 Plastic dust cover, medium, 490(l)x490(h) mm M-005 Micrometric slide, 26x76mm, with 2 scales (1mm/100 & 10mm/100) ST-092 Protective glass for stereohead ST-201 Iris aperture diaphragm for darkfield ST-203 Glass immersion cell ST-204 Translating cell holder ST-205 Vacuum pick-up (with electric vacuum pump) ST-207 Iris aperture diaphragm for brightfield AB-030 Antibacterial surface treatment, only for newly purchased microscope
Inspection & Industrial
15104 - Cleaning kit
It cleans glass quickly and effectively, without leaving residue or odor. Ideal for precision lens or prism cleaning.
How to connect the cameras to our microscopes. Please refer to the Adapter reference list on Digital section.
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Inspection & Industrial
v 6.8.0 - OPTIKA reserves the right to make corrections, modications, enhancements, improvements and other changes to its products at any time without notice.
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