公开(公告)号：US20200103578A1

公开(公告)日：2020-04-02

申请号：US16497012

申请日：2018-03-12

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Robert M. Emmons ,  David A. Rosen ,  Nicholas A. Johnson ,  Gary T. Boyd ,  Trevor W. Stolber ,  Owen M. Anderson ,  Graham M. Clarke ,  Sherie A. Kristie ,  Edward C. Roberts ,  Kristy A. Gillette

IPC: F21V8/00

Abstract: A lightguide having opposing first and second major surfaces where the first major surface includes a plurality of extended features and a plurality of discrete features is described. The lightguide has a viewable area having a length at least 100 times a thickness of the lightguide. The extended features extend in a first in-plane direction across at least 90 percent of the length L of the viewable area. The discrete features are spaced apart along the length and width of the viewable area. The discrete features may be disposed in spaces between the extended features. The discrete features may have faces extending between and connecting adjacent extended features.

公开(公告)号：US10605965B2

公开(公告)日：2020-03-31

申请号：US16156079

申请日：2018-10-10

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Tri D. Pham ,  Steven H. Kong ,  Haiyan Zhang ,  Joseph T. Aronson ,  Michael R. Leaf ,  Gary T. Boyd ,  Nicholas A. Johnson ,  Qingbing Wang

IPC: G02B5/02 ,  F21V8/00 ,  B29C59/02 ,  C25D3/04 ,  C25D3/38 ,  C25D5/12 ,  C25D5/16 ,  G02F1/1335 ,  B29L11/00

Abstract: Optical diffusing films are made by microreplication from a structured surface tool. The tool is made using a 2-part electroplating process, wherein a first electroplating procedure forms a first metal layer with a first major surface, and a second electroplating procedure forms a second metal layer on the first metal layer, the second metal layer having a second major surface with a smaller average roughness than that of the first major surface. The second major surface can function as the structured surface of the tool. A replica of this surface can then be made in a major surface of an optical film to provide light diffusing properties. The structured surface and/or its constituent structures can be characterized in terms of various parameters such as optical haze, optical clarity, Fourier power spectra of the topography along orthogonal in-plane directions, ridge length per unit area, equivalent circular diameter (ECD), and/or aspect ratio.

公开(公告)号：US10371350B2

公开(公告)日：2019-08-06

申请号：US15300707

申请日：2015-03-27

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Nicholas A. Johnson ,  Gilles J. Benoit ,  John A. Wheatley ,  Kenneth A. Epstein ,  David Scott Thompson ,  Michael E. Lauters

IPC: G02B5/02 ,  G02B5/04 ,  G02B19/00 ,  F21V5/08 ,  F21V8/00 ,  F21V5/00 ,  F21V9/14

Abstract: Optical systems are disclosed. More particularly, optical systems including an asymmetric turning film (110) with at least a first (120) and second light source (130) are disclosed. Selection of geometries for the asymmetric turning film can enable different output viewing angles depending on the selective illumination of the first light source, the second light source, or both. The optical systems disclosed may be suitable in both luminaires and displays.

公开(公告)号：US20190219743A1

公开(公告)日：2019-07-18

申请号：US16156079

申请日：2018-10-10

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Tri D. Pham ,  Steven H. Kong ,  Haiyan Zhang ,  Joseph T. Aronson ,  Michael R. Leaf ,  Gary T. Boyd ,  Nicholas A. Johnson ,  Qingbing Wang

IPC: G02B5/02 ,  B29C59/02 ,  C25D5/16 ,  C25D3/04 ,  C25D3/38 ,  C25D5/12 ,  F21V8/00

CPC classification number: G02B5/021 ,  B29C59/026 ,  B29L2011/00 ,  C25D3/04 ,  C25D3/38 ,  C25D5/12 ,  C25D5/16 ,  G02B5/0221 ,  G02B5/0268 ,  G02B5/0278 ,  G02B6/0051 ,  G02F1/133606

Abstract: Optical diffusing films are made by microreplication from a structured surface tool. The tool is made using a 2-part electroplating process, wherein a first electroplating procedure forms a first metal layer with a first major surface, and a second electroplating procedure forms a second metal layer on the first metal layer, the second metal layer having a second major surface with a smaller average roughness than that of the first major surface. The second major surface can function as the structured surface of the tool. A replica of this surface can then be made in a major surface of an optical film to provide light diffusing properties. The structured surface and/or its constituent structures can be characterized in terms of various parameters such as optical haze, optical clarity, Fourier power spectra of the topography along orthogonal in-plane directions, ridge length per unit area, equivalent circular diameter (ECD), and/or aspect ratio.

公开(公告)号：US10295710B2

公开(公告)日：2019-05-21

申请号：US14443407

申请日：2013-11-19

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Tri D. Pham ,  Steven H. Kong ,  Haiyan Zhang ,  Joseph T. Aronson ,  Michael R. Leaf ,  Gary T. Boyd ,  Nicholas A. Johnson ,  Qingbing Wang

IPC: G02B5/02 ,  F21V8/00 ,  B29C59/02 ,  C25D3/04 ,  C25D3/38 ,  C25D5/12 ,  C25D5/16 ,  G02F1/1335 ,  B29L11/00

Abstract: Optical diffusing films are made by microreplication from a structured surface tool. The tool is made using a 2-part electroplating process, wherein a first electroplating procedure forms a first metal layer with a first major surface, and a second electroplating procedure forms a second metal layer on the first metal layer, the second metal layer having a second major surface with a smaller average roughness than that of the first major surface. The second major surface can function as the structured surface of the tool. A replica of this surface can then be made in a major surface of an optical film to provide light diffusing properties. The structured surface and/or its constituent structures can be characterized in terms of various parameters such as optical haze, optical clarity, Fourier power spectra of the topography along orthogonal in-plane directions, ridge length per unit area, equivalent circular diameter (ECD), and/or aspect ratio.

公开(公告)号：US10247872B2

公开(公告)日：2019-04-02

申请号：US15728353

申请日：2017-10-09

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Nicholas A. Johnson ,  Michael J. Sykora ,  Michael E. Lauters ,  John A. Wheatley

IPC: F21V8/00 ,  F21V5/02 ,  G02B5/02 ,  G02B5/04 ,  G02B3/00

Abstract: Dual-sided optical films have extended split spreading structures formed on one major surface, and extended prisms formed on an opposite major surface. One portion of each split spreading structure has a low light spreading characteristic, and another portion has a high light spreading characteristic. For each split spreading structure, the low light spreading portion may be disposed alongside the high light spreading portion. The split spreading structures may be arranged in a one-to-one correspondence with the prisms. Light that enters a given prism from one inclined surface thereof can be associated primarily with light transmitted through the low light spreading portion of the split spreading structure, and light that enters the given prism from the other inclined surface thereof can be associated primarily with light transmitted through the high light spreading portion.

公开(公告)号：US20170116930A1

公开(公告)日：2017-04-27

申请号：US15314913

申请日：2015-05-18

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Nicholas A. Johnson ,  Kenneth A. Epstein ,  James M. Hillis ,  Michael E. Lauters

IPC: G09G3/34 ,  G02F1/13 ,  F21V8/00

CPC classification number: G09G3/3406 ,  G02B6/0046 ,  G02B6/0053 ,  G02B6/0068 ,  G02F1/1323 ,  G02F1/133615 ,  G02F2001/133607 ,  G09G2320/028 ,  H04N2013/403

Abstract: Backlights are disclosed. More particularly, temporally multiplexed backlights utilizing asymmetric turning films are disclosed. The disclosed backlights are capable of displaying a primary image to on-axis viewers while simultaneously providing a secondary image to off-axis viewers.