Two-dimensional illumination optical system and liquid crystal projector using same

A projector comprising:

• an illumination optical system;
• a color separation optical system for separating the visible rays from the illumination optical system into rays of three primary colors:
• liquid crystal panels to which rays corresponding thereto are applied, the crystal panels forming images;
• and
• a projection optical system for projecting images formed on the liquid crystal panels onto a screen by directing the color component rays from the liquid crystal panels onto the screen
• the illumination optical system comprising:
• a light source unit;
• a first array having a plurality of two-dimensionally arranged cells which deflect an incident light from the light source unit;
• and
• a second array having a plurality of two dimensionally arranged cells which deflect a light from the first array, the second array being arranged in a vicinity of a focal plane of the first array,
• wherein at least one of the first array and the second array is formed as a reflection array.