公开(公告)号：US20210187885A1

公开(公告)日：2021-06-24

申请号：US16754825

申请日：2018-10-23

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Robert M. Jennings ,  William T. Fay ,  Jo A. Etter ,  Arthur L. Kotz ,  David J.W. Aastuen

IPC: B29D11/00 ,  B29C51/42

Abstract: Optical films having a curved shaped and methods of shaping optical films are described. A method of shaping an optical film includes the steps of disposing the optical film adjacent first and second rollers spaced apart along a first direction, securing opposing first and second ends of the optical film, providing a curved mold surface, and shaping the optical film by contacting the optical film with the curved mold surface while stretching the optical film along the first direction and keeping a threshold distance between closest points on the optical film contacting the first roller and contacting the curved mold surface less than the width of the optical film to reduce buckling of the optical film.

公开(公告)号：US20180215060A1

公开(公告)日：2018-08-02

申请号：US15747353

申请日：2016-08-17

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Matthew B. Johnson ,  Steven P. Floeder ,  Kristy A. Gillette ,  Arthur L. Kotz ,  Michael L. Ruegsegger

IPC: B26D5/32 ,  B41M3/00 ,  B26D5/00 ,  B26F1/44

CPC classification number: B26D5/32 ,  B26D5/007 ,  B26F1/44 ,  B41M3/003 ,  G02B5/04 ,  G02B5/20 ,  G02B5/3033 ,  G02B5/3041 ,  G02B5/3083

Abstract: Optical films having an optical axis with an orientation that varies along a width of the optical film and having one or more indicia recording the orientation of the optical axis at a plurality of locations in the optical film are provided. Systems and methods for producing and for converting the optical films are provided.

公开(公告)号：US20240165907A1

公开(公告)日：2024-05-23

申请号：US18522621

申请日：2023-11-29

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Robert M. Jennings ,  William T. Fay ,  Jo A. Etter ,  Arthur L. Kotz ,  David J.W. Aastuen

IPC: B32B1/00 ,  B29C51/42 ,  B29D11/00

CPC classification number: B32B1/00 ,  B29C51/428 ,  B29D11/00644 ,  B29D11/0073 ,  B29D11/00932 ,  B32B2307/416

Abstract: An optical film includes a plurality of polymeric layers shaped along orthogonal first and second directions. A first curve being an intersection of the optical film with a first plane orthogonal to the second direction and to a reference plane has a best-fit first circular arc subtending a first angle at a center of curvature of the first circular arc of greater than 180 degrees where the optical film has a maximum projected area in the reference plane. A second curve being an intersection of the optical film with a second plane orthogonal to the first direction and to the reference plane has a best-fit second circular arc subtending a second angle at a center of curvature of the second circular arc of at least 30 degrees. Reflectance and transmittance of the optical film are described.

公开(公告)号：US11927783B2

公开(公告)日：2024-03-12

申请号：US17054247

申请日：2019-07-11

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： John D. Le ,  Zhisheng Yun ,  Timothy L. Wong ,  Timothy J. Nevitt ,  Adam D. Haag ,  Arthur L. Kotz

IPC: G02B5/30

CPC classification number: G02B5/305

Abstract: Optical films, such as reflective polarizer films, and optical systems including the optical films are described. An optical system includes one or more optical lenses having at least one curved major surface, a partial reflector, and a reflective polarizer. For a substantially normally incident light in a predetermined wavelength range extending at least from about 450 nm to about 600 nm: the partial reflector has an average optical reflectance of at least 30%, and the reflective polarizer has an average optical reflectance Rs for a first polarization state, an average optical transmittance Tp for an orthogonal second polarization state, and an average optical reflectance Rp for the second polarization state, where Tp≥80%, Rp≤1%, and 50%≤Rs≤95%.

公开(公告)号：US20230194765A1

公开(公告)日：2023-06-22

申请号：US18070074

申请日：2022-11-28

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Timothy L. Wong ,  David J.W. Aastuen ,  Arthur L. Kotz ,  Benjamin G. Sonnek ,  Matthew C. Dachel ,  John D. Le

IPC: G02B5/30

CPC classification number: G02B5/3083

Abstract: A polymeric optical lens has an optical retardance. A same principal axis of the optical retardance can have an orientation within about 5 degrees of a same first direction for each location in at least 60% of a continuous first region of the polymeric optical lens. The first region includes at least 60% of a largest optically active region of the polymeric optical lens. The optical retardance is greater than 10 nm in at least a portion of the largest optically active region.

公开(公告)号：US11358355B2

公开(公告)日：2022-06-14

申请号：US16754825

申请日：2018-10-23

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Robert M. Jennings ,  William T. Fay ,  Jo A. Etter ,  Arthur L. Kotz ,  David J. W. Aastuen

IPC: B29D11/00 ,  B29C51/42

Abstract: Optical films having a curved shaped and methods of shaping optical films are described. A method of shaping an optical film includes the steps of disposing the optical film adjacent first and second rollers spaced apart along a first direction, securing opposing first and second ends of the optical film, providing a curved mold surface, and shaping the optical film by contacting the optical film with the curved mold surface while stretching the optical film along the first direction and keeping a threshold distance between closest points on the optical film contacting the first roller and contacting the curved mold surface less than the width of the optical film to reduce buckling of the optical film.