SCALP-05

Portable Scattered Light Polariscope

SCALP-05 is a compact scattered light polariscope for depthwise stress measurement in sheet glass. SCALP-05 contains diode laser, optics and camera. Recording of the data and stress calculation is done by PC, connected over USB. Handling of the polariscope is simple – clean the glass, apply a drop of immersion liquid, place SCALP onto the same spot and click the start button in software. After 3 seconds the stress profile is shown on the screen of PC.

Specifications

  • Dimensions (L*W*H): 56*28*76 mm

  • Weight: 177 g

  • Communication interface: USB 2.0

  • Power supply: USB bus

  • Power consumption: 1.0 W

  • Laser wavelength: 635 nm

  • Laser output power: <5 mW

  • Sensor resolution: 1280*1024 pixels

  • Software requirements: Windows 10, .NET 4.6

  • Measurable glass: Flat and curved glass (r > 300 mm)

  • Measurable surface: Air and tin side

  • Minimum measurable thickness: <1 mm

  • Maximum measurable depth: 6 mm (on glass with any thickness)

  • Measurement time: 1-6 seconds, default 3 seconds

  • Minimum surface stress: 1 MPa

  • Maximum stress: Not limited

  • Precision: <1 MPa if surface stress < 4 MPa, <5% otherwise 

  • Operating conditions: +10 … +50 °C (with some thermal isolation down to -10 °C)

  • Humidity: 0 – 90 % R.H. (non-condensing)

  • Ambient light: Direct sunlight must be avoided

  • Calibration: Calibrated by manufacturer

  • Warranty: 2 years

  • Limitations: some coatings (low-E, reflective, etc.), covered or painted surfaces, surfaces with texture