Stereoscopic image apparatus

A stereoscopic image projection apparatus, comprising:

• a polarization beam splitter assembly configured to split a projecting image light beam of a projector into a transmitted light beam, a first reflective light beam and a second reflective light beam, the polarization direction of the transmitted light beam being orthogonal to the polarization direction of the first reflective light beam and the second reflective light beam;
• a polarization state transforming assembly configured to adjust the polarization state of the transmitted light beam or the polarization state of the first reflective light beam and the second reflective beam, such that the adjusted transmitted light beam, first reflective light beam and second reflective light beam have the same polarization state;
• a light path direction adjustment assembly configured to adjust a travel direction of the transmitted light beam or a travel direction of the first reflective light beam and the second reflective light beam, such that the adjusted transmitted light beam, first reflective light beam and second reflective light beam have a travel direction toward a projection screen;
• a light beam size adjustment assembly configured to adjust a coverage range of the transmitted light beam or a coverage range of the first reflective light beam and the second reflective light beam, such that projecting images of the adjusted transmitted light beam, first reflective light beam and second reflective light beam have a similar size;
• and
• one of a light modulator and a quarter wave retarder, the light modulator configured to modulate the adjusted transmitted light beam, first reflective light beam and second reflective light beam to left-circularly polarized light and right-circularly polarized light in accordance with a frame sequence, the quarter wave retarder configured to transform the transmitted light beam, first reflective light beam and second reflective light beam into one of a left-circularly polarized light and a right-circularly polarized light.

A stereoscopic image projection system, comprising a projector, a screen, and a stereoscopic image projection apparatus;

• the stereoscopic image projection apparatus, comprising:
• a polarization beam splitter assembly configured to split a projecting light beam of a projector into a transmitted light beam, a first reflective light beam and a second reflective light beam, the polarization direction of the transmitted light beam being orthogonal to the polarization direction of the first reflective light beam and the second reflective light beam;
• a polarization state transforming assembly configured to adjust the polarization state of the transmitted light beam or the polarization state of the first reflective light beam and the second reflective beam, such that the adjusted transmitted light beam, first reflective light beam and second reflective light beam have the same polarization state;
• a light path direction adjustment assembly configured to adjust a travel direction of the transmitted light beam or a travel direction of the first reflective light beam and the second reflective light beam, such that the adjusted transmitted light beam, first reflective light beam and second reflective light beam have the same travel direction;
• a light beam size adjustment assembly configured to adjust a coverage range of the transmitted light beam or a coverage range of the first reflective light beam and the second reflective light beam, such that projecting images of the adjusted transmitted light beam, first reflective light beam and second reflective light beam have the same size;
• and
• one of a light modulator and a quarter wave retardation film, the light modulator configured to modulate the adjusted transmitted light beam, first reflective light beam and second reflective light beam to left-circularly polarized light and right-circularly polarized light in accordance with a frame sequence, the quarter wave retardation film configured to transform the transmitted light beam, first reflective light beam and second reflective light beam into a left-circularly polarized light and a right-circularly polarized light;
• the projector configured to project left-eye images and right-eye images in accordance with a frame sequence;
• the screen configured to form images of the reflective light beams and the transmitted light beam, and paired lights of the left-eye images and right-eye images which are projected onto the screen being reflected with an opposite circular polarization state.