LIGHT REDIRECTING FILMS AND FILM SYSTEMS

摘要

Light redirecting films (2) include a pattern of individual optical elements (5) of well defined shape on the light exit surface of the films for refracting the light entering the entrance surface of the films (2) from a backlight toward a direction normal to the exit surface. The individual optical elements (5) overlap and intersect each other. Also, the orientation, size and/or shape of the optical elements (5) may be tailored to redirect more of the incident light from the backlight within a desired viewing angle.