公开(公告)号：US20190339438A1

公开(公告)日：2019-11-07

申请号：US16475327

申请日：2018-01-03

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Kenneth A. EPSTEIN ,  Nicholas A. JOHNSON ,  Robert M. EMMONS

IPC: F21V8/00

Abstract: 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.

公开(公告)号：US20180172880A1

公开(公告)日：2018-06-21

申请号：US15737199

申请日：2016-06-14

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Nicholas A. JOHNSON

IPC: G02B1/11 ,  F21V8/00

CPC classification number: G02B1/11 ,  G02B6/0011 ,  G02B6/0016 ,  G02B6/0038 ,  G02B6/0058

Abstract: Light guides with anti reflection features are disclosed. Anti reflection features that absorb light are disclosed. In some disclosed embodiments, a peak due to retrograde reflection off the non-launch edge of a light guide may be reduced to less than 5% or less than 1%.

公开(公告)号：US20210382222A1

公开(公告)日：2021-12-09

申请号：US17407521

申请日：2021-08-20

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Kenneth A. EPSTEIN ,  Nicholas A. JOHNSON ,  Robert M. EMMONS

IPC: F21V8/00

Abstract: 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.

公开(公告)号：US20210333624A1

公开(公告)日：2021-10-28

申请号：US17264512

申请日：2019-07-30

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Daniel J. SCHMIDT ,  Kevin W. GOTRIK ,  Nicholas A. JOHNSON ,  Raymond J. KENNEY ,  Caleb T. NELSON ,  Kenneth A. EPSTEIN

IPC: G02F1/1335 ,  G02B5/00 ,  G02B5/30

Abstract: A light control film comprises a light input surface and a light output surface opposite the light input surface; alternating transmissive regions and absorptive regions disposed between the light input surface and the light output surface, wherein the absorptive regions comprise a core having a first concentration, C1, of a light absorbing material sandwiched between cladding layers having a second concentration, C2, of the light absorbing material, wherein C2

公开(公告)号：US20210088711A1

公开(公告)日：2021-03-25

申请号：US17040316

申请日：2019-03-26

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Nicholas A. JOHNSON ,  Robert M. EMMONS

IPC: F21V8/00

Abstract: A display device including a light source and a wedge lightguide defining a light-inlet side, a display side, and a back side, the display and back sides facing in different directions and forming a wedge-shape that defines a convergence axis, the light-inlet side positioned at a divergent side of the wedge-shape and the back side facing away from a display surface of the display device. The back side includes a plurality of wedge extractors, each wedge extractor extending in a direction substantially orthogonal to the convergence axis. The light source positioned adjacent to the light-inlet side of the wedge lightguide. The wedge lightguide is configured to receive light rays from the light source through the light-inlet side and transmit the light rays through the display side an exit angle with a maximum intensity at between about 10° and about 40° measured from a plane defined by the display side.

公开(公告)号：US20200057343A1

公开(公告)日：2020-02-20

申请号：US16346647

申请日：2017-11-02

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Kenneth A. EPSTEIN ,  Nicholas A. JOHNSON ,  Michael E. LAUTERS ,  Shannon L. SIEFKEN ,  Gary T. BOYD

IPC: G02F1/1335 ,  G02B5/04 ,  F21V5/08 ,  G02F1/13

Abstract: The disclosure describes asymmetric turning films (ATFs) that may be used in conjunction with multiple light sources in a liquid crystal display assembly to provide multiple different characteristic output distributions of light. In some examples, the ATFs include a structured surface defining a plurality of microstructures having two or more faces with each face configured to reflect light in different directions. The microstructure may define a microstructure axis and an angle gradient characterizing the rotation of the microstructure axis across the structured surface of the ATF.