Projection type image display apparatus

A projection type image display apparatus, comprising:

• a light source;
• an integrator;
• a first dichroic mirror which transmits a first color light and reflects second and third color lights;
• a first reflection image display device for the first color from the first dichroic mirror;
• a second reflection image display device for the second color;
• a third reflection image display device for the third color;
• a dichroic prism for combining the first, second and third color lights from the first, second and third reflection image display devices;
• a projection lens;
• a first reflection polarizing plate located before or after the first reflection image display device on a first light path, the first light path being from the first dichroic mirror to the projection lens via the first reflection image display device, the first reflection polarizing plate comprising a working surface which rotates the first light reflected by the first reflection image display device in a specific direction;
• a first auxiliary polarizer located between the light source and the first reflection polarizing plate on the first light path;
• a first auxiliary analyzer as an absorption polarizing plate located between the first reflection polarizing plate and the projection lens;
• and
• a first relay lens located on the first path for refocusing an image formed by the integrator.