| 摘要 |
The present invention provides a system including a efficient polarization converter for higher brightness applications. The converter has a small back working distance of lens, and is more compact than known projection system. At the right source (82), natural light is filtered and separated into s-polarized green, blue light component (Gs, Bs) and p-polarized component (Rp), then these components impinge to a projection system (83). The direction of polarization and optical pass of the light components that impinged to the projection system (83) are regulated in the respective component by receiving effects of a blue-transmitted dichroic filter (84), polarized beam splitter (88, 90) and blue-reflected dichroic filter (86). On the optical pass of the light components, LCD's (92, 94, 96) for generating color images corresponding to the each component are arranged. The each component get color images on the corresponding LCD, then impinge to the projection lens (98). The optical path length has been reduced to a minimum of twice the active width of the LCD panel. <IMAGE> |
