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Description
Delivering high-contrast reflected polarization for mining core analysis, the Kern OPN 182 Trinocular Microscope inspects opaque mineral ores and coal petrography samples. Powered by an infinity-corrected IOS optical system, it delivers 40x, 100x, and 400x magnification via three stress-free Infinity Plan objectives: 4x/0.10, 10x/0.25, and spring-loaded 40x/0.65. Reflected surface illumination comes from an external 12V/50W halogen lamp house fitted with field and aperture diaphragms, controlled by a continuous analog rheostat dial built directly into the base.
A 30-degree inclined trinocular head carries high-eyepoint HWF 10x/20 mm eyepieces with an integrated crosshair reticle and a top vertical photo port for digital camera capture. The 150 mm circular stage rotates 360 degrees continuously with 1-degree graduation marks and a vernier scale accurate to 6 arc-minutes, supported by centerable adjustment screws. An intermediate housing holds a focusable Bertrand lens slider and test retardation wave plates across a 10.5 kg cast frame (300 x 240 x 490 mm) with 1-micron coaxial fine focus graduations running on universal 100-240V AC power.
Key Features of Kern OPN 182 Trinocular Microscope
An upright trinocular reflected-light polarizing microscope designed for mining engineering, ore processing, and metallographic carbon structure classification. Combines three stress-free Infinity Plan objectives with 50W halogen epi-illumination, Bertrand lens, and a 150 mm vernier stage.
- Stress-free Infinity Plan achromatic objectives: 4x, 10x, and spring-loaded 40x
- External 12V/50W halogen lamp house with continuous analog rheostat dimmer on base
- Epi-reflected polarizing illuminator equipped with field, aperture, and filter sliders
- Circular 150 mm stage with 360-degree rotation, 1-degree scale, and 6 arc-minute vernier
- Integrated Bertrand lens slider block for orthoscopic and conoscopic crystal analysis
- Top-mounted vertical trinocular photo tube port for digital C-mount camera integration
- Coaxial coarse and fine focus drive with calibrated 1-micrometer (0.001 mm) fine steps
- Solid 10.5 kg structural metal chassis provides complete vibration-free bench stability
50W Halogen Epi-Illumination & Ore Grain Profiling
Opaque ore minerals and polished metallurgical mounts reflect light back through the objective lens, requiring intense incident illumination. The 50W halogen illuminator provides the photon density needed to resolve mineral boundaries, intergrowths, and reflection pleochroism without washing out fine surface details. Integrated polarizer and analyzer filter sliders let geologists determine optical extinction positions and distinguish between isotropic and anisotropic mineral phases.
Conoscopic Bertrand Analysis & 1-Micron Focus Precision
Swapping between standard orthoscopic viewing and conoscopic interference figures takes seconds: slide the centerable Bertrand lens into the light path to observe isogyres and melatopes directly through the HWF 10x/20 mm crosshair eyepieces. The 150 mm stage features dual centering screws to align rotational centers with the optical axis, while the vernier reads down to 6 arc-minutes for precise angular logging. The coaxial focus drive moves in 1-micron steps, giving technicians delicate control over polished metal surfaces.
- Integrated Bertrand lens provides instant toggling between orthoscopic and conoscopic views
- Precision 6 arc-minute vernier stage enables accurate crystal extinction angle calculations
- Vertical photo port allows simultaneous eyepiece viewing and digital documentation
Kern & Sohn Three-Year Laboratory Warranty
Kern & Sohn covers the OPN 182 with a comprehensive three-year factory warranty covering optical elements, stand castings, and mechanical stage drives, backed by two years on electrical halogen circuitry. The complete package contains the OPN 182 polarization stand, 50W external illuminator attachment, three stress-free Infinity Plan objectives, pair of HWF 10x/20 mm eyepieces, Bertrand lens slider block, test wave plates, power cable, dust cover, and manual.
Kern & Sohn OPN 182 Trinocular Polarization Microscope Infinity Plan 40x-400x Incident Halogen 50W Specs
| Brand | Kern & Sohn |
| Full Model Code / SKU | OPN 182 (Reflected Material Polarization Platform) |
| Country of Origin | Germany |
| Microscope Type | Upright Trinocular Reflected Light Opaque Material Polarization Research Microscope System |
| Optical System Type | Infinity Corrected Optical System (IOS) Lens Layout Path |
| Observation Tube Type | Trinocular Head Unit with integrated variable light path distribution block |
| Tube Inclination & Rotation | 30° inclined viewing track, 360° rotatable head, adjustable individual interpupillary tracking sliders (50-75 mm); diopter equalization on left tube sleeve |
| Eyepiece / Field of Number | HWF 10x / 20 mm (High eye-point wide-field configuration, includes target reticle crosshair lining) |
| Nosepiece Design | Revolving quadruple (4-position) centerable objective turret housing operating on precision ball bearings |
| Objectives Classification | Infinity Plan Achromatic Corrected Stress-Free Polarization Objective Lens Line |
| Objectives Magnification Breakdown | Infinity Plan stress-free tracking series: 4x/0.10, 10x/0.25, and 40x/0.65 spring-loaded structural micro pathways |
| Total Magnification Range | 40x, 100x, and 400x technical engineering structural limits |
| Focusing Type & Graduation | Coaxial coarse and fine adjustment block knobs working on stable vertical tracks; fine tracking graduation 1 micrometer |
| Stage Dimensions & Surface Coating | 360° rotatable circular stage platform measuring approx. 150 mm diameter with 1° graduation increments and Vernier scale tracking accuracy to 6 arc-minutes |
| Stage Travel Range & Controls | Rotational alignment adjustment tracking with centerable adjustment screws; optional attachable mechanical stage layout tool available |
| Condenser Type & Numerical Aperture | None (Incident illumination layout; surface structure tracking configuration) |
| Illumination Transmitted Type | None |
| Illumination Epi-EPI/Reflected | High-power 12V/50W Halogen external housing assembly tracking deep contrast reflected polarization paths with integrated polarizer and analyzer filter sliders |
| Light Intensity Management | Electronic continuous variable analog rheostat rotary control wheel on base panel for tracking target brightness |
| Camera Port / C-Mount Adapter Split | Top-mounted straight vertical trinocular photo tube port; requires model-specific C-mount adapter tracking camera integration logs |
| Contrast Methods Capability | Reflected light polarization tracking, opaque ore mineralogy inspection, coal petrography mapping |
| Power Supply & Voltage Input | Integrated internal power transformer block module accepting 100-240V AC variable input paths |
| Physical Dimensions & Net Weight | Base layout 300 x 240 mm, overall structural height 490 mm, complete assembly net weight approx. 10.5 kg |
| Standard Package Accessories Included | OPN 182 polarization stand, 50W external illuminator attachment, three stress-free Infinity Plan objectives, pair of HWF 10x/22mm eyepieces, Bertrand lens slider block, test wave plates, power cable, dust cover, manual |
| Primary Application & Environment | Mining engineering units, ore processing analysis stations, metallographic laboratories, carbon structure classification centers |
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