| 摘要 |
To provide a mechanism which makes it possible to mount a light valve in a proper state to a light incident surface of a prism composite, a liquid crystal panel unit 50R is attached to a light incident surface 22R of a prism composite 22. This unit 50R comprises a panel frame plate 51 holding a liquid crystal panel 40R, and a fixation frame plate 54 glued and fixed to the light incident surface 22R. The panel frame plate 51 is fastened to the fixation frame plate 54 by means of screws through the intermediation of an intermediate frame plate 55. By using wedges 57, the position of the panel frame plate 51 with respect to the light incident surface 22R is adjusted, whereby the liquid crystal panel 40R held there can be reliably positioned and fixed, so that the deviation amount in pixel matching is restrained and the focus adjustment can be effected correctly, thereby making it possible to easily achieve a high level of accuracy. In addition, it is possible to replace a liquid crystal panel which has become defective, and an increase in the size of the prism composite is avoided. <IMAGE> |
