| 摘要 |
<p>A projection screen (2) having a retention member (3, 4) configured, in use, to be in contrast with at least one surface of the screen (2) along at least a portion of at least one edge of the screen. The projection screen (2) may comprise polymeric material, such as a biaxially oriented foil, and the retention member (3, 4) is bonded to the screen. The retention member (3, 4) may comprise a plurality of apertures (8) and a plurality of tensioning members (6) extending through the apertures (8) to apply tension to the screen (2). A portion of each tensioning member (6) that extends through one of the apertures (8) to contact the retention member (3, 4) may be flexible and non-resilient. The retention member (3, 4) may be configured to allow slidable engagement with the plurality of tensioning members (6). Each retention member (3, 4) may additionally comprise biasing means (54) configured to bias each retention member (3, 4) away from a neighbouring retention member, the biasing means (54) adjustable to vary the bias applied to the retention member (3, 4) when the screen (2) is in situ.</p> |
