Lei-Tech LK-82 Advanced Biological Upright Microscope

Overview

The Lei-Tech LK-82 is an advanced upright biological microscope engineered for rigorous academic teaching, clinical diagnostics, and routine life science research. It employs an infinity-corrected dual-achromatic optical path (UISC), ensuring minimal chromatic and spherical aberration across the full magnification range (20× to 1000×). This optical architecture supports modular expansion—including phase contrast, darkfield, and polarized light observation—without compromising resolution or illumination uniformity. The system integrates Köhler illumination principles with a high-NA (1.25) Abbe condenser, enabling precise critical alignment and optimal contrast control. Designed for reproducibility in regulated environments, the LK-82 meets core requirements for GLP-compliant documentation workflows when paired with its certified imaging module and audit-trail-capable software.

Key Features

• Infinity-corrected UISC optical path delivering consistent flat-field, high-contrast imaging across all magnifications
• Trinocular head with 30° inclined eyepieces, 50–75 mm interpupillary adjustment, and fixed 80:20 beam-split ratio for simultaneous visual observation and digital capture
• Encoded quintuple nosepiece with per-objective LED brightness memory—eliminates manual re-adjustment during magnification changes
• Long-life white LED illumination (3000–5600 K color temperature, continuously tunable), rated for >50,000 hours; includes real-time LCD intensity readout and automatic brightness recall
• Dual-layer mechanical stage with linear rail transmission—provides smooth, backlash-free movement and built-in X-axis overload protection for operator safety
• Modular condenser with bayonet-style accessory slots for rapid insertion of darkfield stops, phase annuli, and polarizer/analyzer sets
• Real-time computational imaging suite: HDR (DHR) dynamic range optimization, calibrated 2D measurement, extended depth-of-field (EDF) stacking, and multi-field mosaic stitching

Sample Compatibility & Compliance

The LK-82 accommodates standard 1″ × 3″ glass slides and 22 × 22 mm coverslips, supporting both fixed and live specimens—including unstained cells, histological sections, diatom preparations, and birefringent crystalline structures (e.g., uric acid, cholesterol). Its phase contrast and darkfield capabilities enable label-free visualization of transparent, low-contrast biological entities without fixation or staining. The system complies with ISO 8578:2017 (microscope optical performance standards) and conforms to IEC 61000-6-3 (EMC emissions) and IEC 61000-6-2 (immunity). When used with validated software protocols, it supports data integrity requirements under FDA 21 CFR Part 11 for electronic records and signatures in quality-controlled laboratories.

Software & Data Management

The bundled acquisition and analysis software provides full DICOM-compatible image export, TIFF/PNG/JPEG2000 support, and embedded calibration metadata (magnification, objective ID, illumination settings). All measurements are traceable to NIST-traceable stage micrometers. Audit trails log user actions—including parameter changes, image annotations, and export events—with timestamps and operator IDs. Exported reports include EXIF metadata and optional PDF/A-2 compliance for long-term archival. The software architecture permits integration with LIMS platforms via RESTful API endpoints and supports batch processing of time-lapse sequences for kinetic studies.

Applications

• Undergraduate and graduate histology, microbiology, and cell biology instruction—leveraging multi-modal contrast for comparative morphology analysis
• Clinical hematology and cytology screening, including peripheral blood smear evaluation and urine sediment analysis
• Pharmaceutical QC of crystalline excipients and polymorphic forms using polarized light mode
• Agricultural pathology—identification of fungal hyphae, nematode eggs, and plant tissue anomalies
• Environmental microbiology—direct enumeration of planktonic organisms and biofilm architecture assessment under darkfield
• Materials science education—observation of polymer spherulites and liquid crystal domains

FAQ

Does the LK-82 support oil immersion objectives?
Yes—the system is fully compatible with standard 100×/1.25 NA oil immersion objectives and includes a dedicated oil-immersion alignment procedure in the user manual.
Is the LED illumination intensity stable across voltage fluctuations?
Yes—the external wide-input power adapter (100–240 V AC) incorporates active regulation to maintain constant current output, ensuring ±1.5% intensity stability over line variations.
Can third-party cameras be used with the C-mount interface?
Yes—the 1× C-mount port accepts industry-standard 25.4 mm diameter sensors; mechanical back-focus adjustment ensures compatibility with most scientific CMOS/CCD cameras.
What is the warranty coverage and service response protocol?
Lei-Tech provides a comprehensive 24-month limited warranty covering parts and labor. Field service engineers respond within 4 business hours for remote diagnostics and dispatch on-site support within 48 hours in Tier-1 metropolitan regions.
Are software updates provided post-purchase?
Yes—registered users receive free firmware and application updates for 36 months from date of shipment, including new measurement algorithms and regulatory compliance patches.