LIGHT CONTROL FILM WITH TURNING FILM AND LENTICULAR DIFFUSER FOR VIEW ENHANCEMENT IN THE HORIZONTAL PLANE

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United States of America Patent

APP PUB NO 20190339438A1
SERIAL NO

16475327

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Optical system including a lightguide; a turning film, including a first smooth surface perpendicular to a display axis and a first structured surface including a plurality of first microstructures defining a first plurality of parallel grooves, where the turning film is optically coupled to the lightguide, where the turning film outputs light collimated in a first plane parallel to the display axis; and a lenticular diffuser, including a second smooth surface perpendicular to the display axis and a second structured surface comprising a plurality of second microstructures defining a second plurality of parallel grooves extending along a plane perpendicular to the display axis, where the lenticular diffuser is optically coupled to the turning film, where the lenticular diffuser reflects or refracts collimated light toward a second plane perpendicular to the first plane; where the first plurality of parallel grooves is perpendicular to the second plurality of parallel grooves.

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Patent Owner(s)

Patent OwnerAddress
3M INNOVATIVE PROPERTIES COMPANYP O BOX 33427 SAINT PAUL MN 55133-3427

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
EMMONS, Robert M St. Paul, US 30 1531
EPSTEIN, Kenneth A St. Paul, US 94 3001
JOHNSON, Nicholas A Burnsville, US 15 18

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