Projection type image display apparatus

A projection type image display apparatus, comprising:

• a light source to emit light;
• a polarizing beam splitter to polarize the light received from the light source;
• a first lens array including a plurality of first lens cells having rectangular shapes to receive the light from the polarizing beam splitter;
• a second lens array including a plurality of second lens cells and being configured to receive the light from the first lens array and emit principal light and unwanted light;
• a color separator configured to separate the principal light from the second lens array into a plurality of light rays of different colors and prevent the unwanted light from being added to the plurality of light rays;
• a rotary polyhedron configured to receive the plurality of light rays from the color separator and direct the plurality of light rays onto the image display device, the directed plurality of light rays having optical axes in different directions;
• an image display device configured to form an optical image from the plurality of light rays;
• and
• a projector configured to project the plurality of light rays emitted from the image display device as a color image.

A projection type image display apparatus comprising:

• a light source;
• a first lens array including a plurality of first lens cells having first, second, third and fourth sides and being configured to receive light from the light source, the first and third sides facing each other and the second and fourth sides facing each other, the first and second, having lengths of D1 and D2, respectively;
• a second lens array including a plurality of second lens cells and being configured to receive the light from the first lens array;
• a cylindrical lens configured to receive the light from the second lens array and emit the light to an optical component, the cylindrical lens forming a light spot on the optical component, the light spot having fifth, sixth, seventh, and eighth sides corresponding to the first, second, third, and fourth sides of one of the first lens cell, the fifth and sixth sides having lengths of D5 and D6, respectively;
• a lens assembly configured to converge at least a portion of the light emitted from the cylindrical lens;
• a color separator configured to receive the light from the cylindrical lens via the collimator lens and separate the light into a plurality of light rays of different colors, the color separator being the optical component whereon the light spot is formed, wherein a ratio of D5 to D6 is different than a ratio of D1 to D2;
• a rotary polyhedron configured to receive the plurality of light rays from the color separator and direct the plurality of light rays onto an image display device that is configured to form optical images from the directed plurality of light rays received from the rotary polyhedron, wherein two or more of the directed plurality of light rays having optical axes extending in different directions;
• and
• a projector configured to project light rays emitted from the image display device as a color image.