公开(公告)号：US20250130356A1

公开(公告)日：2025-04-24

申请号：US18987307

申请日：2024-12-19

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： John A. Wheatley ,  Guanglei Du ,  David T. Yust ,  Neeraj Sharma ,  Gilles J. Benoit ,  Ellison G. Kawakami ,  Anthony M. Renstrom

IPC: G02B5/20 ,  G02B5/28 ,  G02B5/30

Abstract: An article includes an optical filter that comprises a wavelength selective reflective layer and at least one wavelength selective absorbing layer. The optical filter has visible transmittance between 400 nm-700 nm of less than about 30% and near infrared transmittance at 830 nm-900 nm greater than about 30%.

公开(公告)号：US11899230B2

公开(公告)日：2024-02-13

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

CPC classification number: G02B5/28 ,  G02B5/003 ,  G02B5/045 ,  G02B5/208 ,  G02B2207/123

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：US11811139B2

公开(公告)日：2023-11-07

申请号：US17043432

申请日：2019-04-04

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Jaewon Kim ,  Stephen J. Etzkorn ,  Ronald D. Jesme ,  Dipankar Ghosh ,  Mohsen Salehi ,  Guanglei Du ,  John A. Wheatley

IPC: H01Q15/10 ,  H01Q1/32 ,  H01Q1/42

CPC classification number: H01Q15/10 ,  H01Q1/3233 ,  H01Q1/3283 ,  H01Q1/422

Abstract: Gradient permittivity films are described. In particular, gradient permittivity films including a plurality of layers each having a thickness where at least one layer is perforated and has a different air volume fraction from another of the plurality of layers by at least 0.05. Such films may be useful in improving the signal to noise ratio for transmitting and receiving units operating between 20 GHz and 300 GHz behind a protective cover.

公开(公告)号：US11726243B2

公开(公告)日：2023-08-15

申请号：US16957911

申请日：2018-12-27

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： David J. Lamb ,  Guanglei Du ,  Scotty A. Kopp ,  Suman K. Patel ,  John A. Wheatley

IPC: G02B5/20 ,  G01S7/481 ,  G01S17/02 ,  G02B5/124

CPC classification number: G02B5/20 ,  G01S7/481 ,  G01S17/02 ,  G02B5/124 ,  G02B5/208

Abstract: A retroreflective article including a retroreflective layer including a structured surface that is opposite a major surface, a pressure sensitive adhesive that contacts at least a portion of the structured surface to form an optically inactive area that does not substantially retroreflect incident light and at least one low refractive index layer forming an optically active area that retroreflects incident light, wherein the optically active area comprises about 25% or less of the structured surface.

公开(公告)号：US11269121B2

公开(公告)日：2022-03-08

申请号：US16071544

申请日：2016-05-06

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Guanglei Du ,  John A. Wheatley ,  Yi Hang Lv ,  Anthony M. Renstrom ,  Neeraj Sharma ,  Fuguo Xu

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

Abstract: A system may include one or both of a light emitter (46) and a light receiver (40), and an optical filter (10). The optical filter (10) includes a wavelength selective scattering layer (14). The wavelength selective scattering layer (14) may have a near-infrared scattering ratio of less than about 0.9. The filter (10) may have a visible reflective haze ratio of greater than about 0.5. A method may include disposing the wavelength selective scattering layer (14) adjacent one or both of the light emitter (46) and the light receiver (40). The optical filter (10) may include a wavelength selective reflective layer (16). The optical filter (10) may include a wavelength selective absorbing layer (34). An article may include the optical filter (10). The wavelength selective scattering layer (14) 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：US11187576B2

公开(公告)日：2021-11-30

申请号：US16306659

申请日：2017-05-25

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： John A. Wheatley ,  Gilles J. Benoit ,  Guanglei Du ,  Rolf W. Biernath ,  Sara Suzanne Merritt ,  James Hillis ,  Owen M. Anderson ,  Timothy J. Nevitt

IPC: G01J1/04 ,  G02B5/20 ,  G01J1/20 ,  G01J3/12 ,  G01J3/28 ,  G01J3/46 ,  G01N21/31 ,  G01J3/51 ,  G02B5/136

Abstract: In an example, an example article may include a spatially variant microreplicated layer optically coupled to a wavelength selective filter. The wavelength selective filter may have a light incidence angle-dependent optical band. The spatially variant microreplicated layer may be configured to transmit light to a first optical region of the wavelength selective filter at a first predetermined incidence angle and to a second optical region of the wavelength selective filter at a second predetermined incidence angle.

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：US11016229B2

公开(公告)日：2021-05-25

申请号：US16095406

申请日：2017-05-30

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： John A. Wheatley ,  Gilles J. Benoit ,  Todd A. Ballen ,  Kenneth L. Smith ,  Guanglei Du ,  Edward J. Kivel ,  Rolf W. Biernath ,  Jordan D. Whitney ,  Daniel J. Schmidt

IPC: G02B5/20 ,  G02B27/28 ,  G02B5/26 ,  G02B5/30

Abstract: An optical filter including a polarizer and a visible light blocking filter is described. The polarizer is configured to transmit at least 60 percent of light in a first infrared wavelength range that is incident on the polarizer at normal incidence in a first polarization state, to transmit less than 30 percent of light in a second infrared wavelength that is incident on the polarizer at normal incidence in a second polarization state orthogonal to the first polarization state, and to transmit less than 30 percent of light in a third infrared wavelength range that is incident on the polarizer with a 50 degree angle of incidence in the second polarization state. The visible light blocking filter configured to transmit at least 60 percent of light in the first infrared wavelength range at normal incidence in the first polarization state.

公开(公告)号：US20200292737A1

公开(公告)日：2020-09-17

申请号：US16652996

申请日：2018-11-06

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Neeraj Sharma ,  Guanglei Du ,  John A. Wheatley ,  Matthew E. Sousa ,  Jeremy O. Swanson

IPC: G02B5/20 ,  G02B5/26

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 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：US20190383469A1

公开(公告)日：2019-12-19

申请号：US16546789

申请日：2019-08-21

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： John A. Wheatley ,  Guanglei Du

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

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.