Patent ID: 11003028

Abstract:
The present invention discloses a photo-alignment apparatus that realizes a desirable distribution through a single exposure and a method of manufacturing an optical element. The photo-alignment apparatus comprises a light source, a linear polarization film, a pixelated electronic-control phase retarder, and a phase retardation plate; the light source is used to provide light for a exposure; the linear polarization film is configured to convert the light emitted by the light source into a linearly-polarized light having a polarization direction parallel to the direction of the transmission axis of the linear polarization film; the pixelated electronic-control phase retarder is configured to generate phase retardations distributed in a desirable pattern; and the phase retardation plate is used to generate a non-pixelated phase retardation. With this photo-alignment apparatus, a polarization distribution of a desirable pattern can be generated, and a corresponding alignment profile can be formed on a polarization sensitive medium.