Roussel Stéphane, Boffety Matthieu, Goudail François
Opt Express. 2018 Nov 12;26(23):29968-29982. doi: 10.1364/OE.26.029968.
Polarimetric cameras based on micropolarizer grids make it possible to design division of focal plane (DoFP) polarimeters. However, the polarimetric estimation precision reached by these devices depends on their realization quality, which is estimated by calibration. We derive the theoretical expressions of the estimation variance of such polarimetric parameters as an angle of linear polarization and degree of linear polarization as a function of the calibrated micropolarizer characteristics. These values can be compared with the variances that would be obtained with ideal micropolarizers in order to quantitatively assess the effect of manufacturing defects on polarimetric performance. These results are validated by experimental measurements on a real-world camera.
基于微偏振器网格的偏振相机使得设计焦平面分割（DoFP）偏振计成为可能。然而，这些设备所达到的偏振估计精度取决于其实现质量，而实现质量是通过校准来评估的。我们推导了诸如线性偏振角和线性偏振度等偏振参数估计方差的理论表达式，该表达式是校准微偏振器特性的函数。这些值可以与使用理想微偏振器获得的方差进行比较，以便定量评估制造缺陷对偏振性能的影响。这些结果通过在实际相机上的实验测量得到了验证。
