公开(公告)号：US20230034724A1

公开(公告)日：2023-02-02

申请号：US17757755

申请日：2020-12-22

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Alex P. Pongratz ,  David T. Yust ,  Michael A. Johnson

IPC: B32B27/40 ,  G02B1/04 ,  B32B27/36 ,  G02B5/30

Abstract: Film stacks comprise a quarter-wave retarder and a transparent aliphatic cross-linked polyurethane layer disposed on a major surface of the quarter-wave retarder. The transparent aliphatic cross-linked polyurethane layer has a glass transition temperature in a range from 11 to 27° C. and a Tan Delta peak value in a range from 0.5 to 2.5.

公开(公告)号：US12001099B2

公开(公告)日：2024-06-04

申请号：US18080069

申请日：2022-12-13

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Gary T. Boyd ,  Shu-Ching Fan ,  Alex P. Pongratz ,  Gary E. Gaides

IPC: G02F1/1335 ,  G02F1/13357

CPC classification number: G02F1/133607 ,  G02F1/133611 ,  G02F1/13362

Abstract: An integral multilayer optical construction includes opposing first and second structured major surfaces having two-dimensional arrays of respective first and second structures. An optical diffuser is embedded within the optical construction between the first and second structured major surfaces. The optical diffuser has an optical haze of greater than about 5% for at least one visible wavelength in a visible wavelength range extending from about 420 nm to 680 nm. When the optical construction is disposed on a light source with one of the first and second structured major surfaces facing the light source, light emitted by the light source is transmitted by the optical construction with a cross-section of an angular luminous distribution of the transmitted light in at least one first plane that includes a normal to the optical construction, including first and second intensity peaks at respective first and second angles on opposite sides of the normal.

公开(公告)号：US20230194926A1

公开(公告)日：2023-06-22

申请号：US18080069

申请日：2022-12-13

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Gary T. Boyd ,  Shu-Ching Fan ,  Alex P. Pongratz ,  Gary E. Gaides

IPC: G02F1/1335 ,  G02F1/13357

CPC classification number: G02F1/133607 ,  G02F1/133611 ,  G02F1/13362

Abstract: An integral multilayer optical construction includes opposing first and second structured major surfaces having two-dimensional arrays of respective first and second structures. An optical diffuser is embedded within the optical construction between the first and second structured major surfaces. The optical diffuser has an optical haze of greater than about 5% for at least one visible wavelength in a visible wavelength range extending from about 420 nm to 680 nm. When the optical construction is disposed on a light source with one of the first and second structured major surfaces facing the light source, light emitted by the light source is transmitted by the optical construction with a cross-section of an angular luminous distribution of the transmitted light in at least one first plane that includes a normal to the optical construction, including first and second intensity peaks at respective first and second angles on opposite sides of the normal.