公开(公告)号：US20230184996A1

公开(公告)日：2023-06-15

申请号：US17919368

申请日：2021-04-09

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Martin B. WOLK ,  Robert L. BROTT ,  Karl K. STENSVAD ,  Vadim N. SAVVATEEV ,  James M. NELSON ,  Lin ZHAO ,  Caitlin RACE ,  Adam D. HAAG

IPC: G02B1/00 ,  G02B5/30 ,  C23C14/20 ,  C23C14/10 ,  C23C14/34

CPC classification number: G02B1/002 ,  G02B5/305 ,  G02B5/3066 ,  C23C14/205 ,  C23C14/10 ,  C23C14/3464 ,  G02B2207/101

Abstract: An optical metasurface film includes a flexible polymeric film having a first major surface, a patterned polymer layer having a first surface proximate to the first major surface of the flexible polymeric film and having a second nanostructured surface opposite the first surface, and a refractive index contrast layer including a refractive index contrast material adjacent to the nanostructured surface of the patterned polymer layer forming a nanostructured bilayer with a nano structured interface. The nanostructured bilayer comprising a plurality of nanostructures disposed on the flexible polymeric film. The nanostructured bilayer imparts a light phase shift that varies as a function of position of the nano structured bilayer on the flexible polymeric film. The light phase shift of the nanostructured bilayer defines a predetermined operative phase profile of the optical metasurface film. A light reflecting layer is in optical communication with the nano structured bilayer.

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.