Projection type color image display apparatus

A projection type color image display apparatus, comprising:

• a light source section for generating white light beams;
• a first fly-eye lens array comprising a plurality of lenses for forming a plurality of secondary light source image spots of the light source section;
• a second fly-eye lens array comprising at least the same number of lenses as the first fly-eye lens array, provided near a position where the plurality of secondary light source image spots are formed by the first fly-eye lens array;
• a microlens array comprising a plurality of microlenses, wherein the light beams which have passed through the respective lenses of the second fly-eye leans array are superimposed on one another on the microlens array;
• a single image display device comprising a plurality of color pixels arranged in a predetermined arrangement for modulating the light beams from the microlenses;
• a color separator provided in a predetermined position in an optical path from the light source section to the microlens array for color-separating the white beams into R, G and B beams;
• a projection lens for projecting the light beams output from the image display device, wherein:
• the plurality of secondary light source image spots are color-separated and arranged in a pattern which is similar to an arrangement of the plurality of color pixels of the image display device;
• the microlenses form focused spots, which correspond to the color-separated and arranged secondary light source image spots, on one of the color pixels having a corresponding color;
• a ratio between a spot size of the secondary light source image spot and a pitch of the color-separated secondary light source image spots, along a direction of color separation performed by the color separator, is substantially equal to or less than a ratio between a size of an aperture of each of the color pixels of the image display device and a pitch of the color pixels along said direction of color separation.

A projection type color image display apparatus, comprising:

• a light source section for generating white light beams;
• a first fly-eye lens array comprising a plurality of lenses for forming a plurality of secondary light source image spots of the light source section;
• a second fly-eye lens array comprising at least the same number of lenses as the first fly-eye lens array, provided near a position where the plurality of secondary light source image spots are formed by the first fly-eye lens array;
• a microlens array comprising a plurality of microlenses, wherein the light beams which have passed through the respective lenses of the second fly-eye leans array are superimposed on one another on the microlens array;
• a single image display device comprising a plurality of color pixels arranged in a predetermined arrangement for modulating the light beams from the microlenses;
• a color separator provided in a predetermined position in an optical path from the light source section to the microlens array for color-separating the white beams into R, G and B beams;
• and
• a projection lens for projecting the light beams output from the image display device, wherein:
• the plurality of secondary light source image spots are color-separated and arranged in a pattern which is similar to an arrangement of the plurality of color pixels of the image display device;
• and
• each of the plurality of microlenses forms focused spots, which correspond to the color-separated and arranged secondary light source image spots, on one of the color pixels having a corresponding color, so that the light beams are focused from the plurality of microlenses to said one pixel.

A projection type color image display apparatus, comprising:

• a light source section for generating white light beams;
• a first fly-eye lens array comprising a plurality of lenses for forming a plurality of secondary light source image spots of the light source section;
• a second fly-eye lens array comprising at least the same number of lenses as the first fly-eye lens array, provided near a position where the plurality of secondary light source image spots are formed by the first fly-eye lens array;
• a microlens array comprising a plurality of microlenses, wherein the light beams which have passed through the respective lenses of the second fly-eye leans array are superimposed on one another on the microlens array;
• a single image display device comprising a plurality of color pixels arranged in a predetermined arrangement for modulating the light beams from the microlenses;
• a color separator provided in a predetermined position in an optical path from the light source section to the microlens array for color-separating the white beams into R, G and B beams;
• and
• a projection lens for projecting the light beams output from the image display device, wherein:
• at the second fly-eye lens array the plurality of secondary light source image spots are color-separated and arranged in a pattern which is similar to an arrangement of the plurality of color pixels of the image display device, and each of a plurality of lenses of the second fly-eye lens array has a plurality of different colored discrete secondary light source image spots from the first fly-eye lens array formed thereon;
• and
• each of the plurality of microlenses forms focused spots, which correspond to the color-separated and arranged secondary light source image spots, on one of the color pixels having a corresponding color.