20Alvium USB Cameras User Guide V4.6.1
Alvium USB cameras at a glance
Alvium Pol - using polarization (coming soon)
Alvium polarizer cameras are equipped with Sony IMX Polarsens sensors that
support four-directional polarization using filters directly in front of the sensor.
With these cameras, you can replace additional polarizer filters on the lens used in
typical applications. In many cases, polarizer sensors can adapt easily to setups
with varying polarization angles; there is no need to change or rotate optical
polarization filters anymore.
You can use polarized light imaging, for example, to reduce reflections or for
surface analysis regarding stress and defects. Figure 5 shows how the orientation
of the polarization filters affects brightness values for the sub-images:
Current models:
• Alvium 1800 U-507m/c Pol (coming soon) on page 144
• Alvium 1800 U-508m/c Pol (coming soon) on page 151
Figure 5: Polarization angle versus image brightness in sub-images
Please observe
For first series models, pixel processing has not been adjusted to enable the
complete functionality available with non-polarizer models:
• Only raw pixel formats are supported, but no formats for polarizer sensors.
• Features based on pixel processing are available but cannot be used to
generate a proper output. For example, color processing, binning, convolution
filter, DPC, or FPNC are not supported.
More information
See the Pixel based polarizer application note at www.alliedvision.com/en/
support/technical-documentation/alvium-usb-documentation.
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