48 • Sony Sensor Models Nano Series GigE Vision Camera
Firmware Files for Model M2450-Polarized
The latest firmware files for all Nano models are available on the Teledyne DALSA support web site:
http://www.teledynedalsa.com/imaging/support/downloads/firmware/
About Polarization
Light such as sunshine generally is not polarized but has wave oscillations in all directions
perpendicular to its direction of travel. Light reflected from surfaces will generally have a single
wave orientation where a polarizing filter can selectively pass or block that reflected light. In
addition, when imaging objects in a controlled environment, a polarized light source can be used to
selectively highlight object features often hidden with standard lighting viewed with a typical non-
polarized sensor.
The Genie Nano-Polarized model uses the Sony MX250MZR sensor which implements a quad array
of wire-grid polarizers above the photo diodes. The array is comprised of four different angled
polarizers (90°, 45°, 135°, 0°) placed on each pixel. Each block of four sensor pixels make up a
calculation unit where the relationship between the different directional polarizers allows calculation
of both the degree and direction of polarization.
Polarizing Filter
(one of 4 orientations shown)
Random Orientation
Light Source
(non polarized)
Polarized Light
(single orientation)
Light Direction
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