公开(公告)号：US20210168269A1

公开(公告)日：2021-06-03

申请号：US17263389

申请日：2019-07-29

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： John A. WHEATLEY ,  Gilles J.B. BENOIT ,  John D. LE ,  Zhisheng YUN ,  Jonah SHAVER ,  Susannah C. CLEAR ,  Timothy J. NEVITT ,  Kui CHEN-HO ,  Kenneth L. SMITH ,  David J.W. AASTUEN

IPC: H04N5/225 ,  G02B5/20 ,  G02B27/28 ,  G06K9/62 ,  G06K9/00 ,  H04N7/18 ,  G08G1/0968

Abstract: The disclosure describes an example vehicle assistance system including a light sensor, a pixelated filter array adjacent the light sensor, and a full-field optically-selective element adjacent the pixelated filter array. The optically-selective element is configured to selectively direct an optical component of light incident on the optically-selective element across the pixelated filter array to the light sensor.

公开(公告)号：US20190216690A1

公开(公告)日：2019-07-18

申请号：US16302152

申请日：2017-05-17

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Yizhong WANG ,  Zhisheng YUN ,  Bradley D. CRAIG ,  Tao GONG ,  Joel D. OXMAN

IPC: A61K6/10 ,  A61K6/00

CPC classification number: A61K6/10 ,  A61C9/004 ,  A61C9/0053 ,  A61K6/0005 ,  A61K6/0017 ,  C08L39/06 ,  C08L51/08

Abstract: Disclosed herein are aqueous dental coating compositions and methods for enhancing contrast of intraoral surfaces for 3-dimensional digital scanning. The compositions include: an aqueous solvent system; a water soluble polymer present at no greater than 5 wt. %, based on the total weight of the aqueous dental coating composition; a plurality of first particles having a first index of refraction, and a plurality of second particles having a second index of refraction different than the first index of refraction, wherein the first particles and the second particles are substantially non-absorptive in the visible range, and wherein the aqueous dental coating composition is a dispersion or a dispersion of the first particles and second particles in the aqueous solvent system can be formed by shaking the composition for 30 seconds.