LIQUID CRYSTAL VIDEO PROJECTION TYPE DISPLAY DEVICE

PURPOSE:To prevent the distortion of a video reflected on a mirror which is caused by the deformation of a mirror mounting frame by fastening screws at the time of mounting a mirror with a chassis as to a mirror mounting struc ture for a liquid crystal video projection device. CONSTITUTION:The color resolution for light emitted from a lamp 4 is performed by a color resolving dichroic mirror 7 on a supporting frame 8 and a back mirror 9 on a supporting frame 10, and then the light is reflected so as to be made incident on a liquid crystal panel 12. The color synthesis for light emitted from the liquid crystal panel 12 is performed by a color synthesizing dichroic mirror 13 on a canti-lever supporting frame 22 and a front surface mirror 15 on a canti-lever supporting frame 22 again, and then, it is projected on a screen by a projection lens 2. By having a canti-lever supporting frame structure in such a way, the stress is not applied to mirror mounting parts 20v and 22v at the time of fastening the screws on the side of a side plate 7b, so that the surface accuracy of the mirror can be kept constant.