Description
Render biological dissections and mineral crystal facets in warm, natural color depth using the Kern OZL 451 Halogen Stereo Microscope. Unlike cold LEDs that can distort organic hues, it features dual 12V/10W halogen illumination: an angle-adjustable overhead spotlight for surface topography and a sub-stage transmitted bulb for transparent specimens. An advanced 0.75x to 5.0x Greenough optical zoom engine delivers continuous 7.5x to 50x magnification across extra-widefield WF 10x/23 mm high-eyepoint eyepieces.
The 45-degree binocular viewing head rotates 360 degrees for multi-user classroom sharing, with bilateral diopter equalization sleeves across a 55 mm to 75 mm interpupillary range. Supported by a compact 240 x 190 mm cast-metal base, the dual-sided rack-and-pinion coarse focus block glides smoothly across the vertical column, bringing total instrument height to 400 mm. Weighing 4.5 kg, this classic German optical workstation features independent base potentiometer controls and runs on universal 100-240V AC power with an internal transformer block.
Key Features of Kern OZL 451 Halogen Stereo Microscope
A compact binocular Greenough stereo zoom microscope featuring dual 10W halogen illumination and extra-widefield 23 mm eyepieces. Combines 7.5x to 50x magnification with warm continuous-spectrum lighting, rack-and-pinion focus mechanics, and a space-saving pillar base.
- Continuous 7.5x to 50x zoom magnification powered by an 0.75x to 5.0x Greenough core
- Dual 12V/10W halogen lighting: angle-adjustable incident top spot plus sub-stage transmitted bulb
- Warm-spectrum halogen illumination renders biological tissues and minerals with true color depth
- Extra-widefield WF 10x/23 mm high-eyepoint eyepieces provide an expansive visual field
- Independent variable potentiometer rotary controls on base for both illumination circuits
- Dual-sided rack-and-pinion coarse focus drive with internal vertical gear guides
- Compact 240 x 190 mm metal stand base equipped with frosted glass and black/white plates
- Solid 4.5 kg assembly mass provides steady, vibration-free benchtop support
Warm Halogen Illumination & Greenough 3D Depth
Halogen lamps produce a continuous, high-CRI light spectrum that reveals subtle color differences in zoological cuts, stained botanical sections, and raw mineral inclusions that look washed out under standard white LEDs. The overhead spot tilts to highlight fine surface relief with warm shadows. The V-shaped Greenough optical pathway produces pronounced stereoscopic relief, making delicate hand-tool work like tweezer sorting and dissection feel natural and precise.
Ultra-Wide 23mm Field & Compact Pillar Stand
Stepping up to a 23 mm field number provides superior situational awareness across wide specimen dishes, reducing repetitive manual stage nudges. The compact 240 x 190 mm base footprint fits easily onto crowded laboratory benches and classroom counters. The dual-sided rack-and-pinion focus carriage moves without gear lash, while bilateral diopter adjustments ensure sharp focal balance for corrective lens wearers.
- Warm halogen light sources render authentic color depth on biological and geological targets
- Super-wide 23 mm field of view reduces the need to constantly reposition the workpiece
- Compact baseplate preserves valuable counter space in busy assembly and repair cells
Kern & Sohn Three-Year Laboratory Warranty
Kern & Sohn backs the OZL 451 with a comprehensive three-year factory warranty covering optical elements, stand castings, and mechanical rack gearing, backed by two years on electrical halogen circuitry. The complete package contains the OZL 451 binocular pillar stand frame, pair of WF 10x/23 mm eyepieces, frosted glass plate, black/white plate, eye shields, power cable, dust cover, and manual.
Kern & Sohn OZL 451 Binocular Greenough Stereo Zoom Microscope Pillar Stand 0.75x-5.0x WF10x23mm 10W Halogen Specs
| Brand | Kern & Sohn |
| Full Model Code / SKU | OZL 451 (High-Field Halogen Stereo Station) |
| Country of Origin | Germany |
| Microscope Type | Binocular Greenough Stereo Zoom Inspection Microscope System |
| Optical System Type | Greenough Dual-Optical Pathway V-Shape Structural Lens Layout |
| Observation Tube Type | Binocular Head Unit configured with internal matched alignment image erecting prisms |
| Tube Inclination & Rotation | 45° inclined viewing track, 360° rotatable head, adjustable individual interpupillary tracking sliders (55-75 mm); diopter equalization on both eye sleeves |
| Eyepiece / Field of Number | WF 10x / 23 mm (Extra-wide field high eyepoint oculars with integrated rubber eyeguards) |
| Nosepiece Design | None (Continuous rotary magnification zoom changer housing system) |
| Objectives Classification | Achromatic Corrected Dual Zoom Objective Path System |
| Objectives Magnification Breakdown | Continuous structural optical zoom objective range: 0.75x to 5.0x magnification adjustment track |
| Total Magnification Range | 7.5x to 50x continuous adjustment scaling logs |
| Focusing Type & Graduation | Coarse adjustment focus block knobs working on dual-side rack and pinion vertical tracking gear guides |
| Stage Dimensions & Surface Coating | Compact pillar stand platform equipped with dual metal specimen clips and interchangeable frosted glass and black/white stage plates |
| Stage Travel Range & Controls | Fixed stage platform with manual specimen sliding tracking setup across the work area |
| Condenser Type & Numerical Aperture | None (Stereomicroscopic open focal field system) |
| Illumination Transmitted Type | Sub-stage integrated transmitted 12V/10W Halogen light source tracking transparent specimen structures |
| Illumination Epi-EPI/Reflected | Overhead incident 12V/10W Halogen angle-adjustable light tracking target surface topography details with warm color profile paths |
| Light Intensity Management | Independent electronic variable potentiometer rotary controls on base assembly tracking illumination brightness levels |
| Camera Port / C-Mount Adapter Split | None (Binocular optical configuration layout path) |
| Contrast Methods Capability | Three-dimensional spatial brightfield inspection tracking, shadow contrast warm halogen reflection mapping |
| Power Supply & Voltage Input | Integrated internal power transformer block module accepting 100-240V AC variable input paths |
| Physical Dimensions & Net Weight | Base layout 240 x 190 mm, overall structural height 400 mm, complete assembly net weight approx. 4.5 kg |
| Standard Package Accessories Included | OZL 451 binocular pillar stand frame, pair of WF 10x/23mm eyepieces, frosted glass plate, black/white plate, eye shields, power cable, dust cover, manual |
| Primary Application & Environment | Biological dissection classrooms, botanical specimen screening desks, industrial component quality verification, geological sorting tables |




















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