| 摘要 |
PURPOSE:To reduce the moire of a picture projector which has a transmission type screen, and fitting the screen to a cabinet while curving it horizontally with a convex surface out. CONSTITUTION:A transmission type screen which has a Fresnel lens 2 and a lenticular lens 3 is curved horizontally with a convex lens out and then fitted to a cabinet. Consequently, the moire is reduced without varying the brightness of a projected picture too much. |
