Patent ID: 11860525
Assignee: IVIEW DISPLAYS (SHENZHEN) COMPANY LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A projector, comprising 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;
the polarizing beam splitting prism comprises a first right-angled prism, a second right-angled prism, and a multi-layer birefringent polarizer; wherein
the first right-angled prism comprises a beveled surface, the second right-angled prism comprises a second beveled surface, and the first beveled surface is parallel to the second beveled surface, the multi-layer birefringent polarizer is disposed between the first beveled surface and the second beveled surface and is parallel to the first beveled surface and the second beveled surface, and the multi-layer birefringent polarizer;
the polarizing beam splitting prism further comprises an S-polarized light absorptive polarizer;
wherein the S-polarized light absorptive polarizer is disposed between the multi-layer birefringent polarizer and the second beveled surface, and is parallel to the multi-layer birefringent polarizer and the second beveled surface.