公开(公告)号：US20240125704A1

公开(公告)日：2024-04-18

申请号：US18546104

申请日：2022-02-03

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Jessica E. Demay ,  John A. Wheatley ,  William J. Gray ,  Johah Shaver ,  Neil Percy ,  Aaron M. Marcella ,  Stephen M. Kennedy ,  Zhaohui Yang ,  Bharat R. Acharya

IPC: G01N21/64 ,  G02B5/30

CPC classification number: G01N21/643 ,  G02B5/30

Abstract: An optical stack for sensing a presence of an analyte is provided. The optical stack includes a sensor material. The sensor material includes a first optical response including a first optical property having a second value in response to an excitation signal including the first optical property having a first value different from the second value. The first optical response includes a second optical property sensitive to the presence of the analyte. The optical stack includes a first optical film disposed proximate the sensor material and includes a third optical property having respective third and fourth values in response to the respective first and second values of the first optical property. The third value is different from the fourth value by at least a factor of 2.

公开(公告)号：US20230368569A1

公开(公告)日：2023-11-16

申请号：US18195475

申请日：2023-05-10

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Kristy A. Gillette ,  Zhaohui Yang ,  Encai Hao ,  William J. Gray

IPC: G06V40/13 ,  G02B5/00 ,  G02B5/20 ,  G02B3/00

CPC classification number: G06V40/1324 ,  G02B5/003 ,  G02B5/208 ,  G02B3/0056

Abstract: An integral optical construction includes a lens layer including a structured first major surface having a plurality of microlenses. An optically opaque mask layer is disposed on the lens layer and defines a plurality of openings. Each of the openings extends from a first major surface of the mask layer facing the lens layer to an opposite second major surface of the mask layer. The openings are in a one-to-one correspondence with the microlenses. Regions of the mask layer between the openings have an optical density of greater than about 2 for at least a first visible wavelength in a visible wavelength range. An optical adhesive layer is disposed on, and makes physical contact with, the second major surface of the mask layer. The optical adhesive layer defines a recess at each of the openings. The recess includes a closed bottom and an opposite open top open to the opening.

公开(公告)号：US12094238B2

公开(公告)日：2024-09-17

申请号：US18195475

申请日：2023-05-10

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Kristy A. Gillette ,  Zhaohui Yang ,  Encai Hao ,  William J. Gray

IPC: G06K9/00 ,  G02B3/00 ,  G02B5/00 ,  G02B5/20 ,  G06V40/13

CPC classification number: G06V40/1324 ,  G02B3/0056 ,  G02B5/003 ,  G02B5/208

Abstract: An integral optical construction includes a lens layer including a structured first major surface having a plurality of microlenses. An optically opaque mask layer is disposed on the lens layer and defines a plurality of openings. Each of the openings extends from a first major surface of the mask layer facing the lens layer to an opposite second major surface of the mask layer. The openings are in a one-to-one correspondence with the microlenses. Regions of the mask layer between the openings have an optical density of greater than about 2 for at least a first visible wavelength in a visible wavelength range. An optical adhesive layer is disposed on, and makes physical contact with, the second major surface of the mask layer. The optical adhesive layer defines a recess at each of the openings. The recess includes a closed bottom and an opposite open top open to the opening.