Research on Blind Element Detection Method for an Integrated Infrared Polarization Detector
The current blind element detection of infrared polarization detectors mainly relies on the discrimi-nation method in GB/T 17444-2013,which ignores the statistical analysis of abnormal elements that cannot re-spond properly to polarized light.These elements cannot be eliminated by national standards,which seriously affects the imaging quality.Therefore,it is necessary to add a polarization blind element detection method on top of the original blind element detection method,so as to more accurately evaluate the blind element of po-larization infrared detectors.A method for obtaining polarization blind elements through extinction ratio testing based on electric polarizers has been proposed,which can greatly reduce the testing error caused by internal polarization angle etching.At the same time,it can achieve multi-dimensional simultaneous detection of polari-zation blind elements of polarization devices,conventional overheated elements,and dead elements.Experi-mental verification is carried out using the 320X256 detector developed by our company.The number of blind elements identified using national standards is 1010.After introducing polarization blind elements,the number of blind elements is 1178;The overall number of blind elements increased by 0.2％compared to using the na-tional standard discrimination method.
blind elementpolarization detectorextinction ratiopolarization blind element
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