Transmission type screen, image display method for transmission type screen, and projection display apparatus

A transmission type screen used for a rear projection type display apparatus for projecting image light from a rear surface thereof as seen from a viewer, comprising:

• a Fresnel lens screen for bending the image light from an emitter toward the viewer;
• and
• an image display element for imaging the image light from the Fresnel lens screen and expanding the image light at a dispersion angle,
• wherein the Fresnel lens screen includes:
• a Fresnel optical element including a prism formed on an incident surface side as seen from the emitter;
• and
• first light diffusion means for diffusing the image light passing through the Fresnel optical element, and
• wherein the image display element includes:
• a lens element for spatially dividing the image light from the Fresnel lens screen and changing a direction of the image light;
• a birefringent layer provided at a subsequent stage of the lens element, for mixing image light obtained by spatial division by the lens element;
• and
• second light diffusion means provided at a subsequent stage of the birefringent layer, for diffusing the image light passing through the birefringent layer.