| 摘要 |
The present disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for illuminating films with one or more backlights. In one aspect, a side-illuminated backlight may include a reflective back sheet and a reflective front sheet with a plurality of perforations. The size and spacing of the perforations may be configured for producing a field of light, via the plurality of perforations, having a uniformity that is within a predetermined range. The side-illuminated backlight may also include a rigid reflective frame having a window on at least one side through which light may be received. The backlight may include a light-turning film for re-directing at least some light emerging from the front sheet perforations. The light-turning film may direct light entering the perforations in the front sheet at an oblique angle to a more nearly perpendicular angle relative to the front sheet. |
