公开(公告)号：US20220276421A1

公开(公告)日：2022-09-01

申请号：US17746170

申请日：2022-05-17

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： John A. Wheatley ,  Guanglei Du ,  Gilles J. Benoit ,  Rolf W. Biernath

IPC: G02B5/28 ,  G02B5/00 ,  G02B5/04 ,  G02B5/20

Abstract: An example optical filter may include an angle blocking layer having a first angular light blocking range θAL relative to a normal axis, and an interference filter adjacent the angle blocking layer having a second angular light blocking range θIF relative to the normal axis. θIF and θAL at least partially overlap. The example optical filter has a predetermined light transmission zone comprising angles from 0° to a maximum light transmission angle θTmax relative to a normal axis of the major surface. The example optical filter has a predetermined angular light blocking zone θB, a union of θIF and θAL. An example optical filter may include an interference filter having an incidence angle-dependent reflection band and an absorbing layer having an absorption band. The incidence angle-dependent reflection band and the absorption band may overlap at at least one wavelength at at least one angle of incidence.

公开(公告)号：US11366257B2

公开(公告)日：2022-06-21

申请号：US16341639

申请日：2017-10-18

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： John A. Wheatley ,  Guanglei Du ,  Gilles J. Benoit ,  Rolf W. Biernath

IPC: G02B5/28 ,  G02B5/00 ,  G02B5/04 ,  G02B5/20

Abstract: An example optical filter may include an angle blocking layer Slaving a first angular light blocking range θAL relative to a normal axis, and an interference filter adjacent the angle blocking layer having a second angular light blocking range θIF relative to the normal axis. θIF and θAL at least partially overlap. The example optical filter has a predetermined light transmission zone comprising angles from 0° to a maximum light transmission angle θTmax relative to a normal axis of the major surface. The example optical filter has a predetermined angular light blocking zone θB, a union of θIF and θAL. An example optical filter may include an interference filter having an incidence angle-dependent reflection band and an absorbing layer having an absorption band. The incidence angle-dependent reflection band and the absorption band may overlap at least one wavelength at least one angle of incidence.

公开(公告)号：US11300716B2

公开(公告)日：2022-04-12

申请号：US16486313

申请日：2017-09-27

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： John A. Wheatley ,  Michael A. McCoy ,  Tien Yi T. H. Whiting ,  Guanglei Du ,  Neeraj Sharma ,  Kui Chen-Ho ,  Kenneth A. Epstein

IPC: G02B5/30 ,  G02B27/28 ,  G02B5/124

Abstract: Retroreflecting articles are described. In particular, retroreflecting articles including a quarter wave retarder and a retroreflecting layer are described. The retarder is rotationally invariant and the retroreflecting layer is non-depolarizing. Such articles may be useful for sensor-detectable signs, labels, and garments.

公开(公告)号：US11204456B2

公开(公告)日：2021-12-21

申请号：US16071573

申请日：2017-01-19

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Guanglei Du ,  John A. Wheatley ,  William B. Kolb ,  John C. Schultz ,  Daoyun Song ,  Luke D. Riveness

IPC: G02B5/26 ,  G02B5/28 ,  G02B5/22 ,  G02B5/20

Abstract: A system may include one or both of a light emitter and a light receiver. The system may include an optical filter adjacent one or both of the light emitter or the light receiver. The optical filter includes a wavelength selective scattering layer. The wavelength selective scattering layer may have a near-infrared scattering ratio of less than about 0.9. The filter may have a visible reflective haze ratio of greater than about 0.5. A method may include disposing the wavelength selective scattering layer adjacent one or both of the light emitter and the light receiver. An article may include the optical filter. The wavelength selective scattering layer may have an average near-infrared scattering of less than 60%, an average visible scattering of greater than 10%, and a difference between the % total visible reflectance and the % diffuse visible reflectance of less than 20.

公开(公告)号：US10801699B2

公开(公告)日：2020-10-13

申请号：US16546789

申请日：2019-08-21

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： John A. Wheatley ,  Guanglei Du

IPC: F21V11/00 ,  F21V14/00 ,  F21V7/04 ,  F21V7/05 ,  F21V7/22 ,  F21V13/08 ,  G02F1/1334 ,  G02B5/02 ,  G02B5/04

Abstract: Optical devices are disclosed. In particular, optical devices including a collimated light source, at switchable diffuser, and at least one light deflecting element are disclosed. The electrically switchable diffuser, in combination with the at least light deflecting element can provide significant changes in the overall distribution of light at the electrically switchable diffuser is switched between two or more states.

公开(公告)号：US20200264354A1

公开(公告)日：2020-08-20

申请号：US16652998

申请日：2018-11-06

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Neeraj Sharma ,  John A. Wheatley ,  Albert I. Everaerts ,  Guanglei Du ,  William B. Kolb

IPC: G02B5/22

Abstract: Systems including one or both of a light emitter or a light receiver or a detectable object; and an optical filter adjacent one or both of the light emitter or the light receiver, wherein the optical filter includes at least one wavelength transmission selective layer including an adhesive component and an absorber component, wherein the wavelength transmission selective layer at least partially reduces the transmission of wavelengths from 701 nm to 849 nm incident thereon.

公开(公告)号：US10598349B2

公开(公告)日：2020-03-24

申请号：US15514861

申请日：2015-10-22

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Guanglei Du ,  John A. Wheatley ,  Robert L. Brott

IPC: F21V14/00 ,  F21V3/00 ,  F21V5/04 ,  F21K9/69 ,  F21V7/22 ,  F21Y115/10

Abstract: A lighting component including an optical volume and a switchable diffuser disposed at least partially within the optical volume is described. The optical volume includes a light injection region, at least one reflective or transflective outer major surface, and an output major surface. The at least one reflective or transflective outer major surface defines opposing boundaries of the optical volume. The output major surface is adjacent one or more distal edges of the at least one reflective or transflective outer major surface. The switchable diffuser has at least a first state and a second state. The switchable diffuser may have a surface normal that is not parallel to an optical axis of the optical volume. The at least one reflective or transflective outer major surface may have a spatially varying reflective property.

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.

公开(公告)号：US20170343189A1

公开(公告)日：2017-11-30

申请号：US15524837

申请日：2015-11-05

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： John A. Wheatley ,  Guanglei Du

IPC: F21V14/00 ,  F21V7/05 ,  F21V7/04 ,  F21V13/02 ,  F21V7/22 ,  G02F1/1334 ,  G02B5/02 ,  G02B5/04

CPC classification number: F21V14/003 ,  F21V7/048 ,  F21V7/05 ,  F21V7/22 ,  F21V13/02 ,  G02B5/02 ,  G02B5/045 ,  G02F1/1334

Abstract: Optical devices are disclosed. In particular, optical devices including a collimated light source (140), at switchable diffuser (110), and at least one light deflecting element (120, 130) are disclosed. The electrically switchable diffuser (110), in combination with the at least light deflecting element (120, 130) can provide significant changes in the overall distribution of light at the electrically switchable diffuser (110) is switched between two or more states.

公开(公告)号：US20170241622A1

公开(公告)日：2017-08-24

申请号：US15514861

申请日：2015-10-22

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Guanglei Du ,  John A. Wheatley ,  Robert L. Brott

IPC: F21V14/00 ,  F21V3/00 ,  F21V5/04 ,  F21V7/22

Abstract: A lighting component including an optical volume and a switchable diffuser disposed at least partially within the optical volume is described. The optical volume includes a light injection region, at least one reflective or transflective outer major surface, and an output major surface. The at least one reflective or transflective outer major surface defines opposing boundaries of the optical volume. The output major surface is adjacent one or more distal edges of the at least one reflective or transflective outer major surface. The switchable diffuser has at least a first state and a second state. The switchable diffuser may have a surface normal that is not parallel to an optical axis of the optical volume. The at least one reflective or transflective outer major surface may have a spatially varying reflective property.