Patent ID: 7156521

Claim:
A projector comprising: an illumination optical system emitting illumination light; a color-light-separating optical system separating the illumination light into three kinds of red, green, and blue light; electrooptical devices receiving the three kinds of color light separated by the color-light-separating optical system, converting them into corresponding kinds of light for forming images of the corresponding kinds of color light in accordance with image signals of the corresponding kinds of color light, and emitting them; a color-light-synthesizing optical system synthesizing the three kinds of color light emitted from the electrooptical devices; a projection optical system projecting the light synthesized by the color-light-synthesizing optical system; and polarizing plates disposed on the light paths of the corresponding kinds of color light between the corresponding electrooptical devices and the color-light-synthesizing optical system, and the projector further comprising an optical element which adjusts the size of a projected image screen of at least one of the three kinds of color light extending along at least a predetermined direction so as to be nearly equal to those of the other kinds of color light extending along the predetermined direction and which is formed on and integrally with one surface of the corresponding polarizing plate so as to serve as an optical element for compensating chromatic aberration of magnification, wherein the parent material of the polarizing plate disposed on the light path of the red light is composed of glass or a light-transmissive resin, the parent materials of the polarizing plates disposed on the light paths of the green and blue light are composed of sapphire or quartz crystal, and the optical element for compensating chromatic aberration of magnification is disposed only on the light path of the red light.