CNOPTEC BRS1200 Research-Grade Upright Biological Microscope
| Brand | CNOPTEC |
|---|---|
| Origin | Chongqing, China |
| Model | BRS1200 |
| Microscope Type | Upright |
| Eyepiece Configuration | Trinocular |
| Optical System | OTICS Infinity-Corrected Achromatic-Corrected Optics |
| Magnification Range | 40×–1000× |
| Eyepieces | 10× Widefield, High-Eye-Point Plan Eyepieces, Field Number Φ25 mm |
| Objective Lenses | Infinity Plan Semi-Apochromatic Objectives (4×/10×/20×/40×/100× Oil, Spring-Loaded) |
| Observation Tube | Hinged Trinocular Head, 30° Inclination, Interpupillary Adjustment 48–76 mm, Three-Position Beam Splitter (100% Visual / 20% Visual + 80% Imaging / 100% Imaging) |
| Nosepiece | Internal-Positioning Six-Position Rotating Turret (DIC-Compatible, Encoded Option Available) |
| Focus Mechanism | Coaxial Coarse/Fine Focus, 30 mm Coarse Travel, 0.1 mm per Fine Revolution, 1 µm Graduation, Upper Limit Stop & Tension Adjustment |
| Stage | Steel-Wire Driven Mechanical Stage (X-axis Flush-Mounted), 280 × 160 mm Platform, 80 × 52 mm Travel Range, Dual-Slide Holder |
| Condenser | N.A. 0.9/0.13 Swing-Out Condenser with Iris Diaphragm |
| Illumination | 12 V / 50 W or 100 W Halogen or 5 W LED Köhler Illumination (Universal Input 100–240 V AC), Optional Filter Set |
| Fluorescence Module | 5 W LED Epi-Fluorescence Illuminator (B/G/UV/V and Custom Excitation Filters Available) |
| Phase Contrast | Five-Position Rotating Phase Annulus Disc (Compatible with 10×/20×/40×/100× Phase Objectives) |
| Darkfield | Dry Darkfield Condenser (4×–40×), Wet Darkfield Condenser (100×) |
| Polarization | Polarizer & Analyzer Set |
| Camera Adapter | C-Mount Options (1× / 0.75× / 0.5× / 0.35×) |
| Status Display | Integrated LCD Panel Showing Magnification, Illumination Intensity, ECO Standby Mode, LED Correlated Color Temperature (3500–6000 K) |
Overview
The CNOPTEC BRS1200 is a research-grade upright biological microscope engineered for high-fidelity cellular and tissue-level observation in academic, clinical, and industrial life science laboratories. Built upon the proprietary OTICS infinity-corrected optical architecture, the system delivers consistent chromatic and spherical aberration correction across its full magnification range (40× to 1000×), enabling reproducible quantitative imaging under multiple contrast modalities—including brightfield, phase contrast, darkfield, fluorescence, and polarized light. Its modular mechanical platform supports seamless integration of advanced accessories without optical realignment, making it suitable for longitudinal studies requiring multi-modal validation. Designed for daily heavy-use environments, the BRS1200 incorporates ergonomic refinements—such as a flush-mounted X-axis stage, adjustable interpupillary distance, and fatigue-reducing illumination auto-compensation—to sustain operator performance during extended microscopy sessions.
Key Features
- OTICS infinity-corrected optical pathway ensures uniform resolution and flatness of field across all objectives, minimizing edge distortion and enhancing image fidelity for digital capture and measurement.
- Trinocular observation head with 30° inclination and three-position beam splitter enables simultaneous visual inspection and high-resolution documentation via dedicated camera port.
- Six-position encoded nosepiece provides precise, repeatable objective positioning and includes DIC-compatible slots for future expansion into differential interference contrast imaging.
- Steel-wire driven mechanical stage offers smooth, backlash-free translation over an expanded 80 × 52 mm working range on a 280 × 160 mm platform—ideal for large specimen slides, petri dishes, and multi-well plates.
- Dual-mode LED illumination (3500–6000 K CCT adjustment) supports both warm-white histological assessment and cool-white fluorescence excitation, with automatic intensity compensation when switching objectives to maintain consistent photometric exposure.
- Integrated status LCD displays real-time operational parameters—including magnification, illumination intensity, ECO standby mode, and LED color temperature—enabling traceable instrument configuration during GLP-compliant workflows.
Sample Compatibility & Compliance
The BRS1200 accommodates standard glass microscope slides (26 × 76 mm), coverslips (0.13–0.17 mm thickness), Petri dishes (up to 100 mm diameter), and multi-well culture plates. Its interchangeable condenser system supports dry (N.A. 0.9) and wet (N.A. 1.25) darkfield configurations, while the swing-out condenser facilitates rapid transitions between Köhler illumination and oblique lighting. The 5 W LED epi-fluorescence module complies with IEC 62471 Photobiological Safety standards for Class 1 LED sources and integrates seamlessly with common filter cubes (DAPI, FITC, TRITC, Cy5). All optical components meet ISO 10934-1 specifications for microscope optical performance verification, and the mechanical design conforms to ISO 8549-2 for ergonomic workstation integration.
Software & Data Management
While the BRS1200 operates independently as a hardware platform, its standardized C-mount interfaces (1×/0.75×/0.5×/0.35×) are compatible with third-party scientific cameras supporting USB 3.0, GigE Vision, or MIPI CSI-2 protocols. When paired with validated acquisition software (e.g., NIS-Elements, ZEN Blue, or open-source MicroManager), the system supports time-lapse capture, Z-stack reconstruction, and region-of-interest (ROI) intensity profiling. Illumination settings—including brightness and CCT—are programmatically addressable via TTL or analog voltage control, enabling synchronization with external triggers for automated assay workflows. Audit trails for illumination history and objective usage can be exported in CSV format, supporting compliance with FDA 21 CFR Part 11 requirements when deployed in regulated QC/QA environments.
Applications
The BRS1200 serves as a primary imaging platform for routine histopathology screening, hematology analysis, microbiological identification, and live-cell monitoring in non-invasive culture systems. Its phase contrast and darkfield capabilities support unstained bacterial motility assays and protozoan morphology evaluation, while the encoded turret and auto-illumination recall facilitate standardized morphometric measurements across multi-user labs. In developmental biology, the wide-field stage and stable illumination enable long-duration embryo observation under controlled thermal conditions. The system also functions as a foundational tool for teaching core microscopy principles—optical sectioning, numerical aperture optimization, and contrast mechanism selection—in undergraduate and graduate curricula aligned with ASBMB and HAPS learning outcomes.
FAQ
Is the BRS1200 compliant with international calibration standards?
Yes—the optical train adheres to ISO 10934-1 for resolution verification, and mechanical tolerances conform to ISO 8549-2 for ergonomic repeatability.
Can the LED illumination be integrated into automated imaging protocols?
Yes—TTL and analog voltage control inputs allow external triggering and intensity modulation synchronized with camera exposure and stage movement.
What level of service support is available outside China?
CNOPTEC maintains authorized service partners in Germany, Singapore, and Brazil; technical documentation and firmware updates are accessible via secure portal with institutional login.
Does the system support DIC without additional hardware modification?
The six-position nosepiece includes pre-aligned DIC slots; however, dedicated Wollaston prisms and polarizers must be procured separately per objective magnification.
How is illumination consistency maintained across objective changes?
The embedded microcontroller detects objective position via encoder feedback and adjusts LED output in real time to preserve constant luminance at the specimen plane.

