OPTICAL CONFIGURATIONS WITH TWO OR MORE MICRO STRUCTURED FILMS

摘要

The invention provides a lighting unit (10) comprising (i) an arrangement (111) of a plurality of light source units (100) configured to provide corresponding light source unit light (101), (ii) a first foil (210) comprising a plurality of transmissive first foil regions (211), wherein each first foil region (211) comprises a plurality of optical elements (212), and (iii) a second foil (220) comprising a plurality of transmissive second foil regions (220), wherein each second foil region (221) comprises a plurality of optical elements (222), wherein each light source unit (100) has a corresponding first foil region (211) configured downstream of said light source unit (100) and a corresponding second foil region (221) configured downstream of said first foil region (211).