We theoretically investigate into the effects of the incidence angles inlight transmission of cholesteric liquid crystal two-layer sandwich structureswith twist defects created by rotation of the one layer about the helicalaxis.The conoscopic images and polarization resolved patterns are obtained forthick layers by computing the intensity and the polarization parameters as afunction of the incidence angles.In addition to the defect angle inducedrotation of the pictures as a whole, the rings of defect mode resonances arefound to shrink to the origin and disappear as the defect twist angle variesfrom zero to its limiting value and beyond.
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