Optical element and optical device

The invention provides an optical element and an optical device. The optical element comprises an optical structural layer and a dual-refraction material layer. The dual-refraction material layer is arranged on one surface of the optical structural layer in a contact mode. The dual-refraction material layer comprises a dual-refraction material. A plurality of grooves are formed in the surface, making contact with the dual-refraction material layer, of the optical structural layer and used for performing alignment on molecular orientation of the dual-refraction material. According to the optical element, the multiple grooves are formed in the surface, making contact with the dual-refraction material layer, of the optical structural layer, the grooves are adopted as the alignment structure, and alignment can be well performed for molecular orientation of dual-refraction material in the dual-refraction material layer. In the actual preparation process, the micro structure with the multiple grooves can be formed