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| Brand | CNOPTEC |
|---|---|
| Origin | Chongqing, China |
| Model | BK-POL |
| Optical System | OTICS Infinity-Corrected Achromatic Polarizing System |
| Eyepieces | 10× Widefield High-Eye-Point Plan Eyepieces (Field Number Φ22 mm / Φ20 mm) |
| Objectives | Infinity-Corrected Stress-Free Plan Objectives — Transmitted Light: 4× / 10× / 20×(S) / 40×(S) / 60×(S) |
| Reflected Light | 5× / 10× / 20× / 50×(S) |
| Observation Tube | Hinged Binocular or Trinocular Tube, 30° Inclination, Interpupillary Adjustment 48–76 mm, Right Eyepiece Tube Coupled |
| Nosepiece | Five-Position Inclined, Center-Adjustable Revolving Nosepiece |
| Analyzer Assembly | 360° Rotatable, Lockable, Removable Analyzer Module with Focus-Adjustable Bertrand Lens |
| Polarizer | 360° Rotatable, Graduated, Lockable Polarizer |
| Compensators | λ (First-Order Red), λ/4, and Quartz Wedge (I–IV Order) Insertion Plates |
| Focusing Mechanism | Coaxial Coarse/Fine Focus — Coarse Travel 25 mm, Fine Focus 0.2 mm per Revolution, Graduation 2 µm, Upper Limit Stop, Tension Adjustment |
| Stage | 360° Rotatable Polarizing Stage with Centering Adjustment, Scale Division 1°, Vernier Division 6′, Diameter Φ174 mm |
| Condenser | N.A. 0.9 / 0.13 Swing-Out Condenser |
| Illumination | Transmitted — 6 V / 30 W Halogen or 5 W LED (100–240 V AC Input) |
| Mechanical Stage | Polarization-Specific Translation Stage |
| C-Mount Photo Adapters | 0.5× / 0.75× / 1× |
| Optional Heating Stage | Temperature Range RT–400 °C, Accuracy ≤ ±0.5 °C Full Scale, Touchscreen Control & Data Logging, Response Time ≤ 0.01 s, Max Load 200 g, Working Surface Φ31.5 mm, Compatible with Both Transmission and Reflection Modes |
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