FIELD: display technologies.
SUBSTANCE: invention relates to the field of display technologies. The multilayer structure includes a protective layer, a linearly polarizing layer and a quarter-wave plate, which are layered one after the other. The protective layer is used to polarize the light beam to form a linearly polarized light beam. The angle between the absorption axis of the protective layer and the absorption axis of the linearly polarizing layer is zero degrees. The angle between the absorption axis of the linearly polarizing layer and the absorption axis of the quarter-wave plate is 45 degrees.
EFFECT: invention provides an increase in the stability of the transmission of the light beam and the accuracy of recognition performed by the optical recognition module.
11 cl, 12 dwg
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