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Description
Inspect foundry casting grain cross-sections and steel processing alloys using the Kern OKN 175 Metallurgical Microscope. Powered by an infinity-corrected IOS optical system, it delivers 50x, 100x, 200x, and 400x magnification through four Ultra-Long Working Distance (Ultra-LWD) Plan Achromatic objectives: 5x/0.13, 10x/0.25, 20x/0.40, and 40x/0.60. Reflected surface illumination is driven by an external 12V/50W halogen lamp house fitted with adjustable field and aperture diaphragms, controlled via an electronic rotary rheostat built into the base.
A 30-degree inclined trinocular head carries extra-widefield high-eyepoint HWF 10x/22 mm eyepieces with left diopter equalization and a top vertical photo port for digital camera capture. The oversized 175 x 145 mm mechanical stage features a scratch-proof industrial ceramic coating and low-drop coaxial XY controls (76 x 42 mm travel). Built on an 11.5 kg cast frame (300 x 240 x 490 mm), it includes integrated polarizer and analyzer filter sliders and coaxial focus knobs with 1-micron graduations running on universal 100-240V AC power.
Key Features of Kern OKN 175 Metallurgical Microscope
A heavy-duty upright trinocular metallurgical and polarization research microscope featuring an external 50W halogen incident illuminator. Combines four Ultra-LWD Plan infinity objectives with reflected Köhler lighting, ceramic-coated stage, 1-micron fine focus, and a vertical camera port.
- Dedicated reflected 12V/50W halogen external lamp housing with continuous analog rheostat
- Ultra-LWD Infinity Plan objectives: 5x, 10x, 20x, and 40x for safe specimen clearance
- Integrated field and aperture iris diaphragms for precision Köhler contrast and glare suppression
- Includes polarizer and analyzer filter slider sheets for surface polarization analysis
- Top-mounted straight vertical trinocular photo tube port for digital C-mount camera integration
- Oversized 175 x 145 mm mechanical stage with scratch-proof ceramic surface coating
- Coaxial coarse and fine focus drive with calibrated 1-micrometer (0.001 mm) fine division markings
- Solid 11.5 kg structural metal housing isolates delicate polished surfaces from vibration
Reflected 50W Halogen Köhler Lighting & Ultra-LWD Optics
Opaque mineral sections, semiconductor packages, and polished metallurgical mounts reflect light back through the objective lens, requiring intense incident illumination. The 50W quartz halogen lamp house floods the specimen plane with a warm continuous spectrum that brings out true grain boundaries and etching contrast. Built-in aperture and field diaphragms allow operators to eliminate internal barrel reflections and dial in optimal optical resolution on shiny alloys.
Ceramic Stage Durability & 1-Micron Focus Precision
Standard painted stages scratch easily when rough metal specimens and sharp wafer edges slide across them daily. The ceramic coating on this platform resists scratching, chemical stains, and mechanical wear. The coaxial fine focus operates with 1-micron sensitivity, giving metallurgists delicate control to inspect micro-crack propagation and inclusion phases without overshooting. The vertical photo port allows seamless integration of C-mount cameras for formal metallurgical grain size reporting.
- Köhler illumination diaphragms eliminate stray reflections on polished metal faces
- Ceramic-coated mechanical stage resists scratching and chemical staining from daily slide use
- Precision 1-micron fine focus ensures razor-sharp focal plane isolation on opaque specimens
Kern & Sohn Three-Year Laboratory Warranty
Kern & Sohn covers the OKN 175 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 OKN 175 trinocular stand, 50W external illuminator attachment, four Infinity Plan metallurgical objectives, pair of HWF 10x/22 mm eyepieces, polarizing filter sliders, power cable, dust cover, and manual.
Kern & Sohn OKN 175 Trinocular Metallurgical Polarization Microscope Infinity Plan 50x-400x Incident Halogen 50W Specs
| Brand | Kern & Sohn |
| Full Model Code / SKU | OKN 175 (Professional Metallurgy Series) |
| Country of Origin | Germany |
| Microscope Type | Heavy-Duty Upright Trinocular Metallurgical and 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 / 22 mm (High eye-point wide-field configuration for extended inspection timelines) |
| Nosepiece Design | Revolving quintuple (5-position) forward-facing objective turret housing running on heavy-duty ball bearing tracks |
| Objectives Classification | Infinity Plan Achromatic Corrected Ultra-Long Working Distance (Ultra-LWD) Metallurgical Lens Configuration |
| Objectives Magnification Breakdown | Infinity Plan metallurgical tracking series: 5x/0.13, 10x/0.25, 20x/0.40, and 40x/0.60 structural micro pathways |
| Total Magnification Range | 50x, 100x, 200x, and 400x high-resolution material tracking increments |
| Focusing Type & Graduation | Coaxial coarse and fine adjustment block knobs operating on high-rigidity structural guides; fine tracking graduation 1 micrometer |
| Stage Dimensions & Surface Coating | Oversized mechanical stage platform measuring approx. 175 x 145 mm with scratch-proof industrial ceramic coating layer |
| Stage Travel Range & Controls | Extended X-Y axis movement tracking 76 x 42 mm travel paths using low-positioned right-hand coaxial control knobs |
| 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 light paths with variable field and aperture iris diaphragms |
| 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 | High-intensity incident brightfield structural analysis, professional material polarization tracking, micro-crack morphology inspection |
| 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. 11.5 kg |
| Standard Package Accessories Included | OKN 175 trinocular stand, 50W external illuminator attachment, four Infinity Plan metallurgical objectives, pair of HWF 10x/22mm eyepieces, polarizing filter sliders, power cable, dust cover, manual |
| Primary Application & Environment | Foundry quality control centers, steel processing analytical labs, electronics microchip verification benches, academic material science faculties |
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