公开(公告)号：US20250144867A1

公开(公告)日：2025-05-08

申请号：US18835283

申请日：2023-02-03

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Andrew C. Clausen ,  Li Yu ,  Michael R. Berrigan ,  Samuel E. Marmon ,  Timothy J. Lindquist ,  William J. Kopecky

IPC: B29C48/16 ,  B29C48/06

Abstract: A polygonal cluster includes a plurality of substantially parallel polymeric columns disposed inside an outermost polygonal perimeter of the polygonal cluster and extending along a thickness direction between opposing first and second major surfaces of the polygonal cluster; and a common first material substantially filling regions within the polygonal perimeter between the polymeric columns and across the thickness of the polygonal cluster, such that in a cross-section of the polygonal cluster in a plane substantially orthogonal to the thickness of the cluster, for at least each of a plurality of first polymeric columns in the plurality of polymeric columns disposed adjacent the perimeter of the cluster, the first polymeric column has a pear shape having a wider portion facing the perimeter and a narrower portion facing away from the perimeter.

公开(公告)号：US20240329415A1

公开(公告)日：2024-10-03

申请号：US18577724

申请日：2022-07-15

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Li Yu ,  Garth V. Antila ,  Michael R. Berrigan ,  Andrew C. Clausen ,  William T. Fay ,  Timothy J. Lindquist ,  Tri D. Pham ,  Samuel E. Marmon ,  Zhaohui Yang ,  Steven H. Kong

IPC: G02B27/09 ,  G02B5/00

CPC classification number: G02B27/0988 ,  G02B5/003

Abstract: A light control film includes opposing substantially planar substantially parallel first and second major surfaces spaced apart along a thickness direction of the light control film by less than about 500 microns; and a plurality of substantially parallel optically transparent polymeric columns disposed in, and substantially surrounded by, a light absorbing polymeric material. Each of the polymeric columns has a first column end at the first major surface and an opposite second column end at the second major surface and has an aspect ratio of greater than about 3, such that the first column ends of at least one pair of adjacent polymeric columns include substantially parallel substantially straight sides facing, and substantially coextensive with, each other.