Projector and projection system

A projection system, comprising:

• a display device;
• and
• a projector;
• wherein the display device is disposed on a light exit side of the projector, and configured to display projection content of the projector;
• and
• the projector comprises a projection light source, a polarizing beam splitting prism, a polarized light converting component, an LCOS imaging chip, and a projection lens;
• wherein
• the projection light source, the polarizing beam splitting prism, and the projection lens are disposed in a first direction, and the polarizing beam splitting prism is disposed between the projection light source and the projection lens;
• the polarized beam converting component, the polarizing beam splitting prism, and the LCOS imaging chip are disposed in a second direction, and the polarizing beam splitting prism is disposed between the polarized light converting component and the LCOS imaging chip, wherein the second direction is perpendicular to the first direction;
• the projection light source is configured to emit an S-polarized light;
• the polarizing beam splitting prism is configured to reflect the S-polarized light emitted from the projection light source to the polarized light converting component;
• the polarized light converting component is configured to convert the S-polarized light reflected from the polarizing beam splitting prism to a P-polarized light, and emit the converted P-polarized light to the polarizing beam splitting prism;
• the polarizing beam splitting prism is further configured to transmit the P-polarized light emitted from the polarized light converting component to the LCOS imaging chip;
• the LCOS imaging chip is configured to modulate the P-polarized light transmitted from the polarizing beam splitting prism to an S-polarized light, and emit the modulated S-polarized light to the polarizing beam splitting prism;
• and
• the polarizing beam splitting prism is further configured to reflect the S-polarized light emitted from the LCOS imaging chip to the projection lens.