公开(公告)号：US20210231851A1

公开(公告)日：2021-07-29

申请号：US17226265

申请日：2021-04-09

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： John A. Wheatley ,  Guanglei Du ,  Gilles J. Benoit ,  Rolf W. Biernath ,  Christopher A. McLaughlin ,  Sherie A. Kristie

IPC: G02B5/28 ,  G02B5/08 ,  G02B5/22 ,  G02B5/26 ,  G02B5/30

Abstract: An optical system includes an oriented polymeric multilayer optical film having a first reflection band, and a light source configured to produce light in an output band and/or a sensor configured to receive light in an input band. The light source and/or sensor is in optical communication with the oriented polymeric multilayer optical film. In some cases, the first reflection band overlaps the input and/or output band at normal incidence, but not at an oblique incidence angle. In some cases, the first reflection band overlaps the input and/or output band at an oblique incidence angle, but not at normal incidence. The optical system can further include a non-birefringent optical filter having a first blocking band where the first blocking band overlaps the first reflection band for at least one of normal incidence or an oblique incidence angle.

公开(公告)号：US11009637B2

公开(公告)日：2021-05-18

申请号：US16309187

申请日：2017-06-30

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： John A. Wheatley ,  Guanglei Du ,  Gilles J. Benoit ,  Rolf W. Biernath ,  Christopher A. McLaughlin ,  Sherie A. Kristie

IPC: G02B5/28 ,  G02B5/08 ,  G02B5/22 ,  G02B5/26 ,  G02B5/30 ,  B32B7/12 ,  B32B27/36 ,  G02B26/06

Abstract: An optical stack including an oriented polymeric multilayer optical film and a non-birefringent optical filter is described. The oriented polymeric multilayer optical film has a first reflection band with a first band edge and the non-birefringent optical filter has a first blocking band. In some cases, the first blocking band contains the first band edge and the first blocking band provides a reduction in variation of a band edge of an overall blocking band of the optical stack.

公开(公告)号：US20190331837A1

公开(公告)日：2019-10-31

申请号：US16309187

申请日：2017-06-30

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： John A. Wheatley ,  Guanglei Du ,  Gilles J. Benoit ,  Rolf W. Biernath ,  Christopher A. McLaughlin ,  Sherie A. Kristie

IPC: G02B5/28 ,  G02B5/22 ,  G02B5/26 ,  G02B5/08 ,  G02B5/30

Abstract: An optical stack including an oriented polymeric multilayer optical film and a non-birefringent optical filter is described. The oriented polymeric multilayer optical film has a first reflection band with a first band edge and the non-birefringent optical filter has a first blocking band. In some cases, the first blocking band contains the first band edge and the first blocking band provides a reduction in variation of a band edge of an overall blocking band of the optical stack.