Projection screen and projection system

A projection screen, comprising:

• a screen board having a first surface and a second surface opposite to each other, the screen board having a light receiving region and an edge region surrounding the light receiving region;
• a connecting cloth disposed on the second surface of the screen board, at least one edge of the connecting cloth protruding from a corresponding edge of the screen board;
• at least a portion of the second surface of the screen board located in the edge region being connected to the connecting cloth;
• a screen frame having a hollow structure, an orthographic projection of the screen board on a plane parallel to the first surface being located within an outer border of an orthographic projection of the screen frame on the plane, and each edge of the connecting cloth being connected to the screen frame;
• and
• at least one connecting member connecting at least one edge of the connecting cloth to the screen frame, the at least one connecting member being configured to provide a tension to the connecting cloth,
• wherein the screen frame includes a plurality of support portions, the plurality of support portions are supported on the second surface of an edge of the screen board, each edge of the connecting cloth protrudes from a corresponding edge of the screen board, and is bent in a direction away from the screen board so that the edge of the connecting cloth wraps an edge of a corresponding support portion away from a frame body and extends to a side of the screen frame away from the screen board, and
• wherein a portion of the edge of the connecting cloth extending to the side of the screen frame away from the screen board is connected to the screen frame through the at least one connecting member.