摘要:
A light-diffusing film comprises about 90 wt. % to about 99.999 wt. % polycarbonate, wherein the polycarbonate comprises a yellowness index of about 0.8 to about 1.5 as measured in accordance with ASTM E313-73 (D1925); about 0.001 wt. % to about 3 wt. % light-diffusing particles; wherein weight percents are based on a total weight of the light-diffusing film; and wherein the light-diffusing film comprises a light transmission of about 45% to about 65% as measured in accordance with ASTM D1003-00, and a hiding power of 0 to about 0.5.
摘要:
Disclosed herein are backlit devices comprising multiwall sheets (120,220). In one embodiment, a backlit device comprises: a multiwall sheet (120,220) and a light source (106). The multiwall sheet (120,220), that has a viewing side (114), comprises polymer walls and a rib that intersects at least two of the walls. The rib comprises a non-linear geometry. The light source (106) is located on a side of the multiwall sheet (120,220) opposite the viewing side (114), wherein the light source (106) is configured to direct light (104) at the multiwall sheet (120,220).
摘要:
Disclosed herein are backlit devices comprising multiwall sheets. In one embodiment, a backlit device comprises: a multiwall sheet and a light source. The multiwall sheet, that has a viewing side, comprises polymer walls and a rib that intersects at least two of the walls. The rib comprises a non-linear geometry. The light source is located on a side of the multiwall sheet opposite the viewing side, wherein the light source is configured to direct light at the multiwall sheet.