Patent ID: 7841725

Claim:
An image display device, comprising: a light source; a first transmissive optical modulator that modulates a plurality of color lights coming from the light source; a color combination member that combines the color lights provided by the first optical modulator; a second transmissive optical modulator that modulates a light provided by the color combination member as a result of the color light combination; a relay optical system that is disposed between the color combination member and the second optical modulator, and guides the light provided by the color combination member to the second optical modulator; and a light transmissive member that is disposed between the relay optical system and the second optical modulator, and has a function of allowing optical path conditions from the first optical modulator to the relay optical system via the color combination member to be substantially the same as optical path conditions from the relay optical system to the second optical modulator, the light transmissive member being made of a material which is the same as that for the color combination member and is a light transmissive prism whose dimension in an optical axis direction is substantially the same as a dimension of the color combination member in the optical axis direction.