Diffraction optical waveguide structure, optical apparatus and near-eye display device

An optical apparatus, comprising:

• a micro-image source, and a diffraction optical waveguide structure;
• wherein, the diffraction optical waveguide structure comprises:
• a light-guiding layer, and a coupling-in region, a deflecting region, and a coupling-out region all disposed on the light-guiding layer and sequentially arranged along a direction of an optical path, the coupling-in region, the deflecting region and the coupling-out region are all configured with a first diffractive microstructure layer;
• the diffraction optical waveguide structure further comprises light-homogenizing region, the light-homogenizing region is arranged between the deflecting region and the coupling-out region, the light-homogenizing region is configured with a second diffractive microstructure layer, the second diffractive microstructure layer is configured to spatially redistribute energy of lights.

A near-eye display device, comprising:

• an optical apparatus, the optical apparatus comprises a micro-image source, and a diffraction optical waveguide structure;
• wherein, the diffraction optical waveguide structure comprises:
• a light-guiding layer, and a coupling-in region, a deflecting region, and a coupling-out region all disposed on the light-guiding layer and sequentially arranged along a direction of an optical path, the coupling-in region, the deflecting region and the coupling-out region are all configured with a first diffractive microstructure layer;
• the diffraction optical waveguide structure further comprises light-homogenizing region, the light-homogenizing region is arranged between the deflecting region and the coupling-out region, the light-homogenizing region is configured with a second diffractive microstructure layer, the second diffractive microstructure layer is configured to spatially redistribute energy of light.