Light control film with turning film and lenticular diffuser for view enhancement in the horizontal plane

An optical system, comprising:

• (a) a turning film, comprising:
• a first substantially smooth surface, wherein the first substantially smooth surface defines a display axis extending perpendicular to the first substantially smooth surface;
• and
• a first structured surface comprising a plurality of first microstructures defining a first plurality of substantially parallel grooves,
• wherein the turning film outputs light substantially collimated in a first plane;
• and
• (b) a lenticular diffuser, comprising:
• a second substantially smooth surface substantially perpendicular to the display axis;
• and
• a second structured surface comprising a plurality of second microstructures defining a second plurality of substantially parallel grooves extending along a plane substantially perpendicular the display axis,
• wherein the second structured surface comprising a plurality of second microstructures comprises a plurality of lenticular prisms separated by substantially flat land areas, the lenticular prisms having a rounded tip and two sides comprising a linear base section and a linear tip section connected by a polynomial blend section;
• wherein a cross section of each lenticular prism extends along a plane substantially parallel to the display axis in a direction from the second substantially smooth surface to a vertex,
• wherein the lenticular diffuser is optically coupled to the turning film, and wherein the lenticular diffuser reflects and refracts light substantially collimated in the first plane toward a second plane substantially perpendicular to the first plane,
• wherein the first plurality of substantially parallel grooves is substantially perpendicular to the second plurality of substantially parallel grooves, and
• wherein the first substantially smooth surface is adjacent the second structured surface.