公开(公告)号：US20190025481A1

公开(公告)日：2019-01-24

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

IPC: G02B5/22 ,  G02F1/21 ,  G02B5/26 ,  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：US20170176652A1

公开(公告)日：2017-06-22

申请号：US15301780

申请日：2015-05-27

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： John A. WHEATLEY ,  Guanglei DU ,  Robert L. BROTT

IPC: G02B5/02 ,  G02F1/1333 ,  G02F1/137 ,  F21V8/00

CPC classification number: G02B5/02 ,  G02B6/0051 ,  G02F1/1323 ,  G02F1/133362 ,  G02F1/13476 ,  G02F1/137 ,  G02F1/13781 ,  G02F2001/133626 ,  G02F2001/13756

Abstract: Optical systems are described that include a lighting component, a switchable diffuser adjacent the lighting component, and a low-absorbing optical component disposed adjacent the switchable diffuser opposite the lighting component or disposed adjacent the lighting component opposite the switchable diffuser or disposed adjacent the lighting component opposite the display panel. The switchable diffuser is capable of being in either a substantially clear state or in a first hazy state. The low-absorbing optical component provides a collimating effect or a turning effect when the lighting component is illuminated and the switchable diffuser is in the substantially clear state.

公开(公告)号：US20220146725A1

公开(公告)日：2022-05-12

申请号：US17583553

申请日：2022-01-25

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 ,  G02B5/28 ,  G02B5/20

Abstract: A system may include one or both of a light emitter and a light receiver, and an optical filter. 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. The optical filter may include a wavelength selective reflective layer. The optical filter may include a wavelength selective absorbing layer. 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：US20220075107A1

公开(公告)日：2022-03-10

申请号：US17527837

申请日：2021-11-16

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 ,  G02B5/22 ,  G02B5/20 ,  G02B5/28

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：US20220057258A1

公开(公告)日：2022-02-24

申请号：US17515687

申请日：2021-11-01

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

Abstract: A technique of determining the presence of a species in a sample may include passing light through an optical filter. In an example, the optical filter 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：US20190339432A1

公开(公告)日：2019-11-07

申请号：US16475207

申请日：2018-01-03

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Guanglei DU ,  John A. WHEATLEY ,  Matthew E. SOUSA ,  Anthony M. RENSTROM ,  Neeraj SHARMA

IPC: G02B5/28 ,  B32B5/16 ,  G02B5/02

Abstract: Example systems may include one or both of a light emitter and a light receiver, and an optical filter. The optical filter may include a wavelength selective scattering layer configured to scatter visible light. The optical filter may include a wavelength selective reflecting layer having a predetermined transmission band configured to compensate for a color deviation. The optical filter may include a broadband reflecting layer having a predetermined reflection band configured to compensate for a color deviation. The optical filter may include a low-index layer configured to reduce a color deviation in light emitted by the light emitter or received by the light receiver. The wavelength selective scattering layer may include nanoparticles dispersed in a binder, wherein the ratio of the nanoparticles to the binder by weight is at least 50%. Example articles may include example optical filters.

公开(公告)号：US20170367274A1

公开(公告)日：2017-12-28

申请号：US15540954

申请日：2015-12-22

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： John A. WHEATLEY ,  Guanglei DU

IPC: A01G9/24 ,  A01K63/06 ,  F21V29/58 ,  F21V29/71 ,  F21V29/60 ,  F21V8/00 ,  A01G9/20 ,  F21Y2115/10

CPC classification number: A01G9/24 ,  A01G9/20 ,  A01G9/26 ,  A01K63/065 ,  F21V29/58 ,  F21V29/60 ,  F21V29/717 ,  F21Y2115/10 ,  G02B6/0096 ,  H05B37/0227 ,  H05B37/0281 ,  Y02A40/274 ,  Y02B20/42

Abstract: A system for heat and light management for indoor horticulture is described. More particularly, a system including light sources, a light distribution chamber, and circulating water is described.