Screen and projection system

A projection system, comprising a projector and the screen, which is capable of reflecting projection light rays from a projector to a field of view of a viewer, wherein the screen comprises a microlens layer, a transparent substrate layer, a total internal reflection layer and a light absorbing layer which are sequentially stacked from an incident side of the projection light rays, wherein the light absorbing layer is capable of absorbing light transmitted through the microlens layer, the transparent substrate layer and the total internal reflection layer,

• wherein the microlens layer comprises a plurality of microlens units:
• wherein the total internal reflection layer comprises a plurality of microstructure units, each of which has a first plane on the lower side and a second plane on the upper side, wherein the first plane intersects with the second plane and the plurality of microstructure units form a structure of a sawtooth shape;
• and
• the microlens units are at least partially interlaced with the microstructure units such that the microlens units converge at least a portion of the projected light rays to the first plane, and the portion of the projection light rays converged onto the first plane exits after two consecutive total internal reflections on the first plane and the second plane.