公开(公告)号：US10698138B2

公开(公告)日：2020-06-30

申请号：US15568832

申请日：2016-04-14

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Gary T. Boyd ,  Tri D. Pham ,  Nicholas A. Johnson ,  Oanh V. Pham ,  Sara S. Merritt ,  Stephen J. Etzkorn ,  Haiyan Zhang ,  Corey D. Balts ,  Joseph T. Aronson

IPC: G02B5/02 ,  G02B13/20 ,  F21V8/00 ,  G02B3/00 ,  G02B1/14 ,  C25D3/04 ,  C25D3/38 ,  C25D5/12 ,  G02F1/13357 ,  G02B5/04

Abstract: A diffuser including opposing structured first and second major surfaces is described. The first major surface includes a first plurality of surface structures providing a uniform first haze. The second major surface includes a first portion adjacent an edge and a second portion adjacent the first portion. The first portion includes a first region and a second region between the first region and the second portion. The second major surface includes a second plurality of surface structures providing a uniform second haze over the second portion and providing a third haze in the first portion. The third haze in the first region is higher than the second haze, and the third haze in the second region is monotonically decreasing. The second portion has a surface area of at least 90 percent of a surface area of the second major surface.

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：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：US20180224582A1

公开(公告)日：2018-08-09

申请号：US15749580

申请日：2016-08-05

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Qingbing Wang ,  Encai Hao ,  Tri D. Pham ,  Daniel J. Theis ,  Matthew S. Stay

IPC: G02B5/02 ,  G02B5/04

CPC classification number: G02B5/0268 ,  G02B5/0226 ,  G02B5/0236 ,  G02B5/0242 ,  G02B5/0247 ,  G02B5/0278 ,  G02B5/045

Abstract: An optical film assembly comprising a first optical film, a coupling member, and a second optical film wherein the first optical film comprises a prismatic film, the second optical film comprises a diffuser, wherein the coupling member is bonded to the first optical film and to the second optical film such that the first optical film and second optical film are physically coupled, and the coupling member is bonded to at least one of the first optical film and the second optical film non-continuously such that an optically effective air gap is provided. Also, a method for making such optical film assemblies.

公开(公告)号：US20160216413A1

公开(公告)日：2016-07-28

申请号：US15023437

申请日：2014-09-24

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Nathaniel K. Naismith ,  William F. Edmonds ,  Jason S. Petaja ,  Brandt K. Carter ,  Jeffrey L. Solomon ,  Sara S. Merritt ,  Tri D. Pham

IPC: G02B5/02

CPC classification number: G02B5/0242 ,  G02B5/0221 ,  G02B5/0268 ,  G02B5/0278

Abstract: A microstructured diffuser is described comprising a light transmissive film comprising a first microstructured surface comprising a plurality of peaks and valleys. A coating is disposed on the first microstructured surface. The coating partially fills the valleys forming a second microstructured surface.

Abstract translation: 描述了一种微结构化扩散器，其包括透光膜，该透光膜包括包含多个峰和谷的第一微结构化表面。 在第一微结构化表面上设置涂层。 涂层部分地填充形成第二微结构表面的谷。

公开(公告)号：US12222599B2

公开(公告)日：2025-02-11

申请号：US17776941

申请日：2020-12-01

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Zhaohui Yang ,  Przemyslaw P. Markowicz ,  Mark A. Roehrig ,  Tri D. Pham ,  Serena L. Schleusner ,  David A. Rosen ,  Yang Liu

IPC: G02F1/1335 ,  G02B3/00

Abstract: An optical system includes a lens layer including a plurality of microlenses arranged along orthogonal first and second directions, and at least one optically opaque mask layer spaced apart from the lens layer and defining a plurality of through openings therein arranged along the first and second directions. There is a one-to-one correspondence between the microlenses and the openings, such that for each microlens, the microlens and corresponding openings are substantially centered on a straight line making a same oblique angle with the lens layer. An optical layer can include the lens layer and the optically opaque mask layer embedded in the optical layer.

公开(公告)号：US12201005B2

公开(公告)日：2025-01-14

申请号：US18643225

申请日：2024-04-23

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Tao Liu ,  Gary T. Boyd ,  Daniel J. Schmidt ,  Caleb T. Nelson ,  Owen M. Anderson ,  Tri D. Pham ,  Encai Hao ,  Shu-Ching Fan

IPC: G02B3/08 ,  H10K59/80

Abstract: An optical system includes an optical film curved about a first axis and a light control film curved about the first axis. The light control film can be disposed between a light source and the optical film. The optical film includes a microstructured first major surface and an opposing second major surface. The microstructured first major surface defines a linear Fresnel lens including a plurality of Fresnel elements extending longitudinally along the first axis. The first major surface of the optical film faces the light control film. The light control film can include a plurality of alternating optically transmissive and optically absorptive regions extending longitudinally along the first axis such that in a cross-section orthogonal to the first axis, for at least a majority of the optically transmissive regions, a centerline between adjacent optically absorptive regions is substantially normal to a major surface of the light control film.

公开(公告)号：US12164120B2

公开(公告)日：2024-12-10

申请号：US16467221

申请日：2018-01-08

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Kristopher J. Derks ,  Tri D. Pham ,  Kenneth A. Epstein ,  David J. Lamb

IPC: G02B5/02

Abstract: An optical film (210) includes a microstructured surface (211) comprising a plurality of prismatic structures (230), the microstructured surface (211) defining a reference plane (241-242) and a thickness direction (243) perpendicular to the reference plane; wherein the plurality of prismatic structures includes a plurality of facets (231), each facet having a facet normal direction forming a polar angle with respect to the thickness direction and an azimuthal angle along the reference plane, and wherein the microstructured surface has a surface azimuthal distribution of the plurality of facets that is substantially uniform, and wherein the microstructured surface has a surface polar distribution of the plurality of facets that has an off-axis peak polar distribution.

公开(公告)号：US11998947B2

公开(公告)日：2024-06-04

申请号：US17250318

申请日：2019-07-18

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Mark B. O'Neill ,  Gary E. Gaides ,  Tri D. Pham ,  Aaron K. Nienaber ,  Ronald D. Jesme ,  Joseph B. Eckel ,  Shawn C. Dodds ,  Bert T. Chien

IPC: B05D3/00 ,  B05D3/06 ,  B05D5/06 ,  G02B5/00 ,  H01L31/054 ,  H01L31/048 ,  H02S20/25

CPC classification number: B05D3/203 ,  B05D5/061 ,  G02B5/003 ,  H01L31/054 ,  H01L31/0549 ,  B05D3/067 ,  B05D3/20 ,  B05D5/06 ,  G02B2207/123 ,  H01L31/0488 ,  H02S20/25

Abstract: A method of making an optical film for control of light includes positioning a first mixture on a substrate, wherein the first mixture includes a first plurality of magnetizable particles dispersed in a first resin, assembling the first plurality of magnetizable particles into a desired structure for the control of the light by rotating modulation of at least a first magnetic field relative to the first plurality of magnetizable particles, and vitrifying the first resin while the first plurality of magnetizable particles are in the desired structure.