Projection screen

A projection screen, comprising:

• a substrate comprising a first substrate surface,
• wherein the first substrate surface comprises a first area and a second area adjacent to the first area, the first area being provided with a plurality of first wire grid bodies extending along a first direction, and the second area being provided with a plurality of second wire grid bodies extending along the first direction;
• the plurality of first wire grid bodies constitute a first wire grid structure, and the plurality of second wire grid bodies constitute a second wire grid structure;
• each of the plurality of first wire grid bodies comprises a first contact surface connected with the substrate, and a first surface that is configured to reflect an incident projection light, wherein a first angle is formed between the first contact surface and the first surface, and the first angle reduces gradually along a direction from the first area to the second area;
• and
• each of the plurality of second wire grid bodies comprises a second contact surface connected with the substrate, and a third surface that is configured to reflect an incident projection light;
• wherein a third angle is formed between the second contact surface and the third surface, and the third angle increases gradually along the direction from the first area to the second area;
• wherein an angle between the first contact surface and the incident projection light changes along the direction from the first area to the second area, and another angle between the second contact surface and the incident projection light changes along the direction from the first area to the second area.