製品 | 2021/5/14
2. Structure of Polarization Imaging Sensor and Principles
Basic structure of Polarization Imaging Sensor
Microscopic size polarization filters are integrated and placed in front of a CCD image sensor
Computation of polarization information from intensity at 4 neighbor pixels[Relation between input polarization and intensity pattern] [Computation principle ]
Intensity is supposed to describe a sinusoid.
By knowing only 4 points of the curve, it is possible to recover the whole set of information for any input polarization.
Birefringence data (phase shift and
axis orientation) is present at each
point as quantitative data.
Measurement example: lens
・Detailed quantitative evaluation and comparison is possible between multiple sets of data.
・The slightest differences between two sets of data are easy to spot on displayed images.