BA310Pol Polarizing Microscope
Model: BA310PolA strain-free polarizing microscope built on the BA310 platform. The standard model is configured for transmitted polarized light; the +EPI version adds reflected illumination and long working distance plan objectives, so thin sections and opaque specimens can be handled on one instrument — suited to petrography, mineralogy and materials or electronics inspection.
Specifications
| Optical system | Infinity-corrected CCIS system, broadband-coated EC strain-free plan objectives, lead-free optics (RoHS) |
|---|---|
| Eyepiece | Plan wide-field high-eyepoint 10X/20mm, diopter adjustable; one eyepiece with cross reticle |
| Observation tube | Hinged binocular, 30° inclined, interpupillary 55–75mm; hinged trinocular, 30° inclined, split 100:0 / 20:80 |
| Objectives (transmitted) | Strain-free EC Plan 4X/NA0.10/WD15.9, 10X/NA0.25/WD17.4, 20X/NA0.45/WD0.9 (optional), 40X/NA0.65/WD0.6 (spring), 60X/NA0.80/WD0.35 (spring) |
| Objectives (reflected, +EPI) | LM Plan long working distance 5X/NA0.15/WD11.72, 10X/NA0.30/WD16.00, 20X/NA0.40/WD12.00, 50X/NA0.55/WD9.15 (spring), 100X/NA0.80/WD2.00 (optional) |
| Nosepiece | Internal-centerable 4-position nosepiece (5-position on +EPI); every objective centerable with the supplied wrench |
| Stage | 360° circular rotating stage, φ160mm, vernier reading 0.1mm, precision ball-bearing rotation, with specimen clips |
| Condenser | Achromatic swing-out strain-free condenser N.A.0.90/0.13 |
| Focusing | Coaxial coarse/fine focus, fine travel 0.2mm per turn, graduation 0.002mm, adjustable coarse tension with focus stop |
| Intermediate body | Built-in centerable Bertrand lens, 360° rotating analyzer, compensator slot |
| Polarizer | Mounted on the condenser carrier, 360° rotatable with 90° positioning |
| Compensators | λ (first-order red), 1/4λ, quartz wedge (grades I–IV), empty slot |
| Illumination | 6V/30W halogen transmitted Köhler illumination with adjustable field and aperture diaphragms; the +EPI version adds 12V/50W halogen reflected illumination with optional 4500K / 6000K LED modules |
| Digital expansion | Trinocular port accepts 2.5X / 4X photo eyepieces and 0.35X–1X camera adapters |
Features
- Strain-free optical path — no artificial interference colours in polarized observation
- CCIS infinity-corrected system whose tube-lens design removes lateral chromatic magnification error
- Centerable EC Plan strain-free objectives stay centred after every magnification change
- 360° rotating φ160mm stage with 0.1mm vernier and smooth ball-bearing movement
- Bertrand lens, 360° analyzer and a full λ / 1/4λ / quartz-wedge compensator set for conoscopy and semi-quantitative work
- Polarizer rotates 360° with 90° positioning for fast crossed-polar alignment
- Transmitted Köhler illumination with field and aperture diaphragms for reduced stray light and higher contrast
- Optional +EPI version covers both transparent and opaque specimens in one instrument
- 20:80 trinocular split for digital photomicrography and imaging add-ons
Applications
- Petrographic thin sections and mineral birefringence examination
- Ore-phase analysis of metals, ceramics and coatings
- Polarized observation of liquid crystals, films and fibres
- Semiconductor and electronic component defect inspection
- Crystal morphology identification in chemicals and building materials
- University teaching and research in geology, materials and biomedical science