Kern OKO 176 Trinocular Metallurgical Polarization Tool

Description

Analyze translucent crystalline structures and opaque alloy mounts using the Kern OKO 176 Polarizing Microscope universal material science workstation. Built for dual-path inspection, it features two independent 12V/50W halogen light sources: an upper EPI-reflected housing with field and aperture diaphragms for opaque metals, and a sub-stage transmitted lamp for petrographic thin sections. Powered by an infinity-corrected IOS optical system, it delivers 50x, 100x, 200x, 400x, and 1000x magnification via five Ultra-Long Working Distance (Ultra-LWD) Plan Achromatic objectives: 5x, 10x, 20x, spring-loaded 40x, and spring-loaded 100x oil immersion.

The 30-degree inclined trinocular head incorporates a multi-channel optical splitter (100:0 visual / 0:100 camera split) and a straight vertical photo port, paired with extra-widefield high-eyepoint HWF 10x/22 mm eyepieces across a 50 mm to 75 mm interpupillary range. The oversized 175 x 145 mm mechanical stage provides 76 x 42 mm of coaxial XY travel, supported by a height-adjustable Abbe 1.25 NA condenser for transmitted light. An intermediate polarizing block includes rotatable polarizer and analyzer filter sliders, while coaxial coarse and fine focus knobs feature calibrated 1-micron fine division markings across a 13.5 kg cast chassis operating on universal 100-240V AC power.

Key Features of Kern OKO 176 Polarizing Microscope

A combination upright metallurgical and polarizing research microscope featuring dual 50W halogen illumination and Ultra-LWD infinity optics. Combines 50x to 1000x magnification with reflected and transmitted light paths, polarization filters, 1-micron fine focus, and a 175 x 145 mm stage.

• Dual illumination: independent 50W reflected halogen housing plus 50W transmitted halogen base
• Internal dual-channel power transformer module running on universal 100-240V AC lines
• Ultra-LWD Infinity Plan objectives: 5x, 10x, 20x, spring-loaded 40x, and 100x oil immersion
• Integrated polarizer and analyzer filter sliders for surface and transmitted birefringence checks
• Top-mounted straight vertical trinocular photo tube port with 100:0 / 0:100 optical beam splitter
• High-eyepoint HWF 10x/22 mm widefield eyepieces on a 30-degree inclined trinocular head
• Coaxial coarse and fine focus drive with calibrated 1-micrometer (0.001 mm) fine division markings
• Solid 13.5 kg cast-metal chassis provides complete vibration-free benchtop stability

Dual 50W Halogen Illumination & Ultra-LWD Plan Optics

Advanced composites, geological thin sections, and opaque metallurgical pucks often require simultaneous surface illumination and transmitted backlighting. The dual 50W halogen light engines flood both light paths with intense photon density, cutting through dense crystal lattices and dark carbon fibers. The Ultra-LWD Plan objectives provide generous working distances that prevent lens contact when inspecting irregular, unpolished material surfaces.

Polarization Analysis & 1-Micron Focus Precision

The integrated polarizing filter kit allows researchers to analyze crystalline phase structures, verify composite fiber orientations, and evaluate anisotropic stress distributions under crossed polars. Coaxial coarse and fine focus knobs operate on internal vertical tracks with 1-micron fine increments, providing the delicate control needed to track micro-cracks under 1000x oil immersion. The vertical photo port routes clean optical data to digital C-mount cameras for formal forensic reports.

• Dual 50W halogen illuminators provide balanced light penetration for opaque and translucent media
• Ultra-LWD objectives provide generous vertical clearance over irregular materials
• Selectable beam splitter allows 100% light transfer to digital cameras for low-noise capture

Kern & Sohn Three-Year Laboratory Warranty

Kern & Sohn covers the OKO 176 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 OKO 176 universal frame stand, dual 50W power blocks with housings, five Infinity Plan objectives, pair of HWF 10x/22 mm eyepieces, polarizing filter sliders, immersion oil bottle, power cables, dust cover, and manual.