OPTIGEM-20
v 1.1 2022
Gemological trinocular stereozoom
microscope, 7x...45x, tiltable stand,
transmitted & incident light
Brightfield Yes
Darkfield Yes
Simple polarized light As optional
Brightfield Yes
Darkfield Yes
Simple polarized light As optional
Type Trinocular
Construction material Aluminum & Plastic molds / Aluminum gears
Split ratio Fixed. 50 (eyepiece) / 50 (photo)
Inclination 45°
360° rotating Yes
Interpupillary distance (mm) 51-75
Dioptric adjustment On both tubes
Head holder internal diameter (mm) 76
Tube inner diameter (mm) 30
Field number (mm) 21
Magnification 10x
Micrometric scale As optional
Diameter of micrometer glass (mm) 23
High eyepoint (for glass wearers) Yes
Rubber cup Yes
Retractable protections Yes
Optical system Greenough
Anti-fungus treatment Yes
Objective Type Achromatic
Zoom type Parfocal achromatic
Working distance (mm) 100
Standard magnifications 7x-45x
Zoom ratio 6,43
Objective numerical aperture
0.02 @ 0.7x
0.07 @ 4.5x
Objective resolution
59 lp/mm @ 0.7x
208 lp/mm @ 4.5x
Observation Method Transmitted Light
Observation Method Incident Light
Head
Eyepieces
Objective
OPTIKA MICROSCOPES ITALY
www.optikamicroscopes.com - info@optikamicroscopes.com
Type Coarse
Coarse total travel (mm) 114
Adjustable tension Yes
Head holder internal diameter (mm) 76
Type Fixed arm
Tilting mechanism Yes, full 90° tilt angle and 360° rotating
Gemological clamp Yes, adjustable
Type LED
Darkfield illuminator Yes, side-emitting LEDs
Lever for dark background insertion Yes
Selector for illumination modes
Yes, 3 modes:
- brightfield only
- darkfield only
- both brightfield and darkfield.
Light source power (W) 2
Illuminance (lux) 6,000
Brightness control Manual
Lifetime (hours) > 65,000
Temperature (K) 6,300
Max. required power (W) 3
Type LED
X-LED type X-LED2
Light source power (W) 3
Illuminance (lux) 80,000
Brightness control Manual
Lifetime (hours) > 65,000
Temperature (K) 6,500 (Nordic light)
Max. required power (W) 6
Type External
Microscope connector Jack, 2.1 mm
Power plug type Multi-plug (EU, UK, US)
Input voltage 100/240 Vac, 50/60 Hz
Output voltage 12 Vdc 1.5 A
Dust cover Yes
User Manual Digital version (downloadable)
Additional Information
Maximum sample height (mm): 90
Total height (mm) 480
Head height (mm) 230
Head width (mm) 140
Head depth (mm) 150
Base height (mm) 60
Base width (mm) 210
Base depth (mm) 270
Product Weight
(kg) 10
Power Supply for
Illumination
Accessories Included
Product Dimensions
Focusing System
Stand
Stage
Transmitted
Illumination
Incident Illumination
OPTIKA MICROSCOPES ITALY
www.optikamicroscopes.com - info@optikamicroscopes.com
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