In this paper we propose a method to characterize polarization based stereoscopic 3D displays using multispectral Fourier optics viewing angle measurements. Full polarization analysis of the light emitted by the display in the full viewing cone is made at 31 wavelengths in the visible range. Vertical modulation of the polarization state is observed and explained by the position of the phase shift filter into the display structure. In addition, strong spectral dependence of the ellipticity and polarization degree is observed. These features come from the strong spectral dependence of the phase shift film and introduce some imperfections (color shifts and reduced contrast). Using the measured transmission properties of the two glasses filters, the resulting luminance across each filter is computed for left and right eye views. Monocular contrast for each eye and binocular contrasts are performed in the observer space, and Qualified Monocular and Binocular Viewing Spaces (QMVS and QBVS) can be deduced in the same way as auto-stereoscopic 3D displays allowing direct comparison of the performances.
We introduce a new way to characterize auto‐stereoscopic 3D displays using multi‐location viewing angle measurements and calculation of 3D properties in the observer space. We show that a measurement with a very high angular resolution and low parasitic light is needed. A new Fourier optics instrument dedicated to this application is introduced that exhibits a practical angular resolution better than 0.03° for an aperture angle of 50° and a very low level of parasitic light. The specific problem of geometric compensation of 3D displays is examined using multi‐locations measurements from different displays.
-Multispectral viewing angle and imaging characterization have been applied to different organic light-emitting diode (OLED) displays. Angular dependence of the OLED emission is always complex because of its multilayer structure. Spectral information is also related to the geometry of Fabry-Perot-like structure of each OLED. High-resolution viewing angle measurements of different OLED displays are reported and compared. Multispectral viewing angle polarization properties are also reported. Imaging measurements allow to detect wavelength shift on the surface of the displays probably related to thickness non-uniformities. Local radiance fluctuations from one pixel to the other more related to driving problems due to the dispersion of the electric properties of the driving thin-film transistors are also detected.
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