Operation concept
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Stereo microscope, Greenough design with 5:1 zoom range
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Main Component
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Lens Body, Stand and Illumination
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Lens Body
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Stemi 305 (binocular, incl. eyepieces 10×/23 Br. foc), Stemi 305 doc (phototube, incl. eyepieces 10×/23 Br. foc,)
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Stands
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Ergonomic design with adjustable in height and inclination for longer use
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Illumination
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Three Options are available, which are Dark-field, Bright field and oblique light Illumination
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Input Power Supply
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100 - 240 Volt AC, 60/50 Hz
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Optical Data of the Basic and Optional System
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Magnification range
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8× to 40x with basic version (10× eyepieces, no front optics) all magnifications from 4× to 200× (interchangeable optics)
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Maximum resolution
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200 Lp/mm basic version; up to 400 Lp/mm with interchangeable optics
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Maximum object field
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29 mm basic version; up to 58 mm using interchangeable
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Working distance
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110 mm basic version; up to 185 mm using interchangeable optics
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Stands
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Body
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Light weighted aluminium body
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Focusing
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Manual coarse adjustment with Tilting arm
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Illumination
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Reflected Illumination
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Double arm gooseneck – enhanced contrast of 3D shaped objects through distinct shadow effects.
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Transmitted Illumination
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Oblique – Observe uncolored transparent objects in relief contrast
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Polarization Add-On
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Polarization filters for ringlights, spots and transmitted light units. Study birefringent objects, detect stress in Rough and Polished
Diamonds
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