公开(公告)号：US20230393054A1

公开(公告)日：2023-12-07

申请号：US18245271

申请日：2021-09-30

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： John A. Wheatley ,  William Gray ,  Bharat R. Acharya ,  Aaron M. Marcella ,  Stephen M. Kennedy ,  Brett J. Sitter ,  Micheal L. Steiner ,  Mark A. Roehrig ,  Jonah Shaver ,  Jessica E. DeMay

IPC: G01N21/03 ,  G01N21/25

CPC classification number: G01N21/031 ,  G01N21/253 ,  G01N2021/0314 ,  G01N2201/0636 ,  G01N2201/0683

Abstract: A measurement system is disclosed and includes a light source, a receiver, a measurement subject, and a reflector. The reflector is disposed on an opposite side of the measurement subject than are the light source and the receiver.

公开(公告)号：US20230092755A1

公开(公告)日：2023-03-23

申请号：US17948572

申请日：2022-09-20

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Bharat R. Acharya ,  Tonya D. Bonilla ,  Jessica E. DeMay ,  Stephen M. Kennedy ,  Aaron M. Marcella ,  Raj Rajagopal ,  Mark A. Roehrig ,  David A. Rosen ,  Jonah Shaver ,  Brett J. Sitter ,  Gregory W. Sitton ,  Michael L. Steiner ,  John A. Wheatley ,  Zhaohui Yang ,  Antonia E. Schaefer

IPC: G01N21/64 ,  G01N21/33 ,  G02B5/28 ,  G02B17/00

Abstract: A recycling optical cavity is defined at least by first and second optical films and is configured to receive a test material therein. The test material is configured to emit at least a second light having a second wavelength when irradiated with a first light having a first wavelength. For at least one of s- and p-polarized incident lights incident in an incident plane, and at the first and second wavelengths: at a first incident angle, the first optical film has respective optical transmittances T11(θ1) and T12(θ1), and the second optical film has respective optical transmittances T21(θ1) and T22(θ1), wherein T11(θ1)>T12(θ1), T21(θ1), T22(θ1); and at a second incident angle, the first optical film has respective optical transmittances T11(θ2) and T12(θ2), and the second optical film has respective optical transmittances T21(θ2) and T22(θ2), wherein T21(θ2)>T11(θ2), T12(θ2), T22(θ2).