Description
Capture high-flatness digital cell images and stream diagnostic video using the Kern OBF 133 Trinocular Microscope. Operating on a finite 160 mm optical track, it provides 40x, 100x, 400x, and 1000x magnification via four Plan Achromatic objectives: 4x/0.10, 10x/0.25, spring-loaded 40x/0.65, and spring-loaded 100x/1.25 oil immersion. A dedicated vertical 23.2 mm photo port on the 30-degree inclined trinocular head routes optical data directly to digital C-mount cameras while maintaining binocular viewing through high-eyepoint WF 10x/18 mm eyepieces.
Transmitted light is driven by a high-output 3W LED sub-stage module that produces uniform, cool white illumination without heating slide mounts. A height-adjustable Abbe 1.25 NA condenser features an integrated iris diaphragm and filter slot for precise contrast tuning on wet mounts. The 145 x 130 mm double-layer mechanical stage provides 75 x 40 mm of coaxial XY travel via low-positioned right-hand stalks, while coaxial coarse and fine focus knobs feature calibrated 2-micron graduations across a 6.7 kg cast-metal frame running on universal 100-240V AC power.
Key Features of Kern OBF 133 Trinocular Microscope
A clinical and laboratory trinocular compound microscope featuring Plan Achromatic flat-field optics, cool 3W LED illumination, and a dedicated camera port. Combines 40x to 1000x magnification with an Abbe 1.25 NA condenser, double-layer mechanical stage, and 2-micron coaxial focus drive.
- Plan Achromatic finite objectives: 4x, 10x, spring-loaded 40x, and 100x oil immersion
- Dedicated vertical 23.2 mm photo port with beam splitter for digital camera archiving
- High-output transmitted 3W LED white illumination module with continuous rotary dimmer
- Height-adjustable Abbe 1.25 NA condenser equipped with an adjustable iris diaphragm
- Double-layer 145 x 130 mm mechanical stage with 75 x 40 mm low-drop coaxial XY drive
- Coaxial coarse and fine focus drive with calibrated 2-micrometer fine division markings
- Widefield high-eyepoint WF 10x/18 mm eyepieces with left-tube diopter adjustment
- Solid 6.7 kg cast-metal chassis provides complete vibration-free benchtop stability
Plan Achromatic Optics & Cool 3W LED Illumination
Plan Achromatic objectives eliminate spherical aberration and peripheral blur, keeping cellular membranes and nuclear structures crisp across the entire field of view. The 3W LED lamp provides a daylight-balanced continuous spectrum that renders biological stains with authentic color saturation without thermal distortion. Spring-loaded mounts on the 40x and 100x objectives cushion accidental contact, protecting both front glass elements and delicate specimen preparations.
Trinocular Camera Routing & Stage Translation
The top-mounted vertical photo tube routes clean optical data to external digital C-mount cameras, letting laboratory teams record high-resolution photomicrographs while actively viewing through the oculars. The double-layer mechanical stage provides smooth 75 x 40 mm coordinate translation via right-hand drop-down stalks, while the 2-micron fine-focus wheel allows precise focal plane isolation under 1000x oil immersion.
- Vertical photo port routes clean optical data to external digital video capture systems
- Cool-running 3W LED light source prevents thermal expansion in living specimens
- Reversed quadruple nosepiece leaves the stage completely open for rapid slide swaps
Kern & Sohn Three-Year Laboratory Warranty
Kern & Sohn protects the OBF 133 with a comprehensive three-year factory warranty covering optical elements, stand castings, and mechanical stage drives, backed by two years on LED circuitry. The complete package contains the OBF 133 trinocular frame stand, four Plan Achromatic objectives, pair of WF 10x/18 mm eyepieces, vertical photo channel block, immersion oil flask, power cable, dust cover, and manual.
Kern & Sohn OBF 133 Trinocular Microscope Plan 4x/10x/40x/100x WF10x18 3W LED Specs
| Brand | Kern & Sohn |
| Full Model Code / SKU | OBF 133 |
| Country of Origin | Germany |
| Microscope Type | Advanced Clinical and Laboratory Trinocular Compound Microscope System with Eco LED and Flat-Field Optics |
| Optical System Type | Finite 160mm Corrected Optical Pathway Lens Design System |
| Observation Tube Type | Trinocular Head Unit with vertical photo dock port assembly |
| Tube Inclination & Rotation | 30° inclined viewing track, 360° rotatable head, adjustable individual interpupillary controls 50-75mm; diopter adjustment on left tube eye socket |
| Eyepiece / Field of Number | WF 10x / 18 mm (Paired set, standard configuration alignment) |
| Nosepiece Design | Revolving quadruple (4-position) reverse-facing objective turret housing for comfortable specimen access |
| Objectives Classification | Plan Achromatic Corrected Objective Lens Line (Anti-fungus treated, optimized for advanced peripheral edge sharpness and field flatness) |
| Objectives Magnification Breakdown | Plan Achromatic series tracking: 4x/0.10, 10x/0.25, 40x/0.65 spring-loaded, and 100x/1.25 spring-loaded oil-immersion micro pathways |
| Total Magnification Range | 40x, 100x, 400x, and 1000x standard optical calculation limits |
| Focusing Type & Graduation | Coaxial coarse and fine adjustment block knobs operating a heavy internal alignment pathway; fine tracking graduation 2 micrometers |
| Stage Dimensions & Surface Coating | Oversized double-layer mechanical stage platform measuring approx. 145 x 130 mm with hard protective surface coating and dual slide specimen holder clips |
| Stage Travel Range & Controls | Precision coaxial X-Y axis mechanical translation range approx. 75 x 40 mm with low-positioned right-hand controls |
| Condenser Type & Numerical Aperture | Abbe Condenser NA 1.25 equipped with adjustable iris diaphragm, focus adjustment rack mechanics, and filter slot track structure |
| Illumination Transmitted Type | High-output 3W LED adjustable sub-stage transmitted light module tracking uniform white bottom brightfield paths |
| Illumination Epi-EPI/Reflected | None |
| Light Intensity Management | Electronic continuous variable rotary dimmer control wheel on side panel for tracking target brightness |
| Camera Port / C-Mount Adapter Split | Vertical photo port channel on top of head unit (23.2mm tube interface), standard beam-splitting path routing infrastructure |
| Contrast Methods Capability | High-flatness brightfield cell overview mapping, full oil-immersion evaluation under cool illumination, digital image documentation logging |
| Power Supply & Voltage Input | Internal universal 100-240V AC stabilization power module line links |
| Physical Dimensions & Net Weight | Base assembly 395 x 200 mm, overall frame height 380 mm, complete assembly net weight approx. 6.7 kg |
| Standard Package Accessories Included | OBF 133 trinocular frame stand, four plan achromatic objectives, pair of WF 10x/18mm eyepieces, vertical photo channel block, immersion oil flask, power cable, dust cover, manual |
| Primary Application & Environment | Routine diagnostic clinical reporting labs, health clinic screening desks, veterinary sample analysis workstations, advanced digital data logging lines |






















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