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    • 1. 发明授权
    • Rolled projection screen
    • 滚动投影屏幕
    • US09557632B2
    • 2017-01-31
    • US14437436
    • 2013-03-12
    • MILESTONE AV TECHNOLOGIES LLC
    • Tim HensonJim Fisher
    • G03B21/58G03B21/60
    • G03B21/58G03B21/60Y10T29/49828
    • A roller projection screen, including a projection screen material having a reflective front surface, onto which an image may be projected, and a back surface. The projection screen material is secured to a roller at an upper edge of the material and the projection screen material can be rolled in a spiral fashion in multiple layers around the roller. A buffer material is secured to the roller or to the back surface of the projection screen material so as to be adjacent the back surface and so as the be interposed between at least some of the multiple layers of the projection screen material when the projection screen material is rolled about the roller so as to inhibit ladder marks in the projection screen material.
    • 一种辊投影屏幕,其包括具有反射前表面的投影屏幕材料,图像可投影到该投影屏幕和背面。 投影屏幕材料固定在材料的上边缘处的辊子上,并且投影屏幕材料可以围绕辊子以多层螺旋方式滚动。 缓冲材料固定到投影屏幕材料的辊子或背面,以便与背面相邻并且当投影屏幕材料的多个层之间插入至少一些投影屏幕材料时 围绕辊子滚动以便抑制投影屏幕材料中的梯形标记。