| 摘要 |
<p>A light valve image projection system (10) wherein the optical registration of individual primary color images on a projection screen (14) is substantially immune to modification of the projection throw distance (S) is disclosed herein. The light valve projection system (10) is operative to project a composite optical image onto the screen (14), and includes an optical light valve apparatus (18, 19, 20) for generating first and second optical images. A converging optical system (22), in optical alignment with one or more light valves (20), is disposed to overlap the first and second images into a composite image along an optical axis. The projection system (10) of the present invention further includes a projection lens (24) for illuminating the screen (14) with the composite image. <IMAGE></p> |
