Abstract: A color image projecting apparatus having three cathode ray tubes which produce different respective color images and including two projecting lenses. A first primary color image reproduced on a first cathode ray tube is projected on a screen through a first projecting lens, and second and third primary color images reproduced on second and third cathode ray tubes, respectively, are synthesized by a dichroic mirror and then projected on the screen through a second projecting lens. In this case, the projecting axes of the first and second projecting lenses are arranged to converge two images passed therethrough on the screen.

Abstract: An image projection system having an image projector and a concave viewing screen, in which the image projector comprises a cathode raytube, a horizontal and a vertical deflecting coil for beam scanning in the cathode ray tube, and a projection lens, and the amplitude of scanning currents supplied to the horizontal and the vertical deflecting coil is controlled in vertical and horizontal scanning periods respectively, so that trapezoid-shaped and fan-shaped distortions in the projected image on the viewing screen are compensated for.