Kern OBL 155 Phase Contrast Trinocular Halogen Optics

Description

Isolate transparent living cells and record diagnostic video feeds using the Kern OBL 155 Phase Trinocular Microscope. Powered by an infinity-corrected optical pathway, it delivers 40x, 100x, 400x, and 1000x magnification via four Plan Phase and E-Plan objectives: 4x/0.10 brightfield, 10x/0.25 phase, spring-loaded 40x/0.65 phase, and spring-loaded 100x/1.25 oil-immersion phase. 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/20 mm eyepieces.

Transmitted light is driven by a 6V/20W halogen sub-stage module focused through an advanced multi-position phase turret condenser (NA 1.25) with selectable phase annular rings and a brightfield setting. Built on a 6.9 kg metal frame (395 x 200 x 380 mm), it features an oversized 145 x 130 mm double-layer mechanical stage with 76 x 52 mm of coaxial XY travel. Coaxial coarse and fine focus knobs feature calibrated 2-micron fine division markings, operating on universal 100-240V AC power with an integrated electronic rotary dimmer on the side panel.

Key Features of Kern OBL 155 Phase Trinocular Microscope

A professional laboratory trinocular phase-contrast compound microscope featuring an advanced turret condenser and infinity-corrected optics. Combines four balanced phase and brightfield objectives with 20W halogen illumination, a 145 x 130 mm stage, and a vertical camera port.

• Infinity Plan Phase objectives: 4x brightfield plus 10x, 40x, and 100x oil phase contrast
• Advanced multi-position phase contrast turret condenser (NA 1.25) with matched phase rings
• Dedicated vertical 23.2 mm photo port with beam splitter for digital camera archiving
• Sub-stage transmitted 6V/20W halogen light module with continuous electronic dimmer
• Double-layer 145 x 130 mm mechanical stage with 76 x 52 mm low-drop coaxial XY drive
• Coaxial coarse and fine focus drive with calibrated 2-micrometer fine division markings
• Widefield high-eyepoint WF 10x/20 mm eyepieces with left-tube diopter adjustment
• Solid 6.9 kg cast-metal chassis provides complete vibration-free benchtop stability

Infinity Phase Correction & Turret Condenser Tracking

Living protozoa, bacteria, and tissue scrapings lack natural pigmentation, appearing invisible under standard brightfield illumination. The infinity-corrected phase optics shift background light waves, transforming minute optical path differences into sharp amplitude contrast. Rotating the Zernike-style turret condenser lets technicians dial in the correct annular ring for each objective power, maintaining edge-to-edge flatness across the entire 20 mm field of view.

Trinocular Camera Capture & Coaxial Stage Mechanics

The top-mounted vertical photo tube routes clean optical data to external digital cameras, letting pathologists record real-time video clips of living cell motility without disturbing ocular alignment. The double-layer mechanical stage provides smooth 76 x 52 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.

• Multi-position turret condenser allows instant toggling between phase contrast and brightfield
• Vertical camera channel allows seamless digital video recording and defect archiving
• Warm halogen light engine provides stable, continuous-spectrum illumination for cytology

Kern & Sohn Three-Year Laboratory Warranty

Kern & Sohn protects the OBL 155 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 factory package contains the OBL 155 trinocular frame stand, phase contrast turret condenser, full infinity phase objective set, centering telescope eyepiece, pair of WF 10x/20 mm eyepieces, immersion oil flask, power cable, dust cover, and manual.