Display device and diffractive optical element

• Main Authors: LIU XIONGBO, HU FEI, ZHAO PENG, ZHAO YONGSHUN, PARK YEON YOUNG, LI YI
• Format: Patent
• Language: Chinese; English
• Published: 09.08.2022
• Subjects: OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS

The utility model discloses a display device and a diffractive optical element. The diffractive optical element comprises a substrate and a grating layer, the substrate has a first direction and a second direction, the grating layer comprises multiple grating structures, the multiple grating structures are arranged on the surface of the substrate at intervals in the first direction, at least one grating structure comprises multiple grating blocks, and the multiple grating blocks are sequentially stacked in the second direction. Therefore, the grating structure is formed by stacking the multiple grating blocks, the manufacturing process is simple, the grating structure can adapt to large-scale production, the stacking angle, height and refractive index of the grating structure can be conveniently adjusted by stacking the grating blocks, and the design flexibility is high. 本申请公开了一种显示设备以及衍射光学元件。该衍射光学元件包括：基板以及光栅层，基板具有第一方向和第二方向，光栅层包括多组光栅结构，多组光栅结构沿第一方向间隔设置于基板的表面，至少一光栅结构包括多个光栅块，多个光栅块依次沿第二方向堆叠设置。由此，上述方式通过采用多个光栅块堆叠形成光