Search International and National Patent Collections

1. (WO2017039721) THERMOFORMED MULTILAYER REFLECTIVE POLARIZER

Pub. No.:    WO/2017/039721    International Application No.:    PCT/US2015/052258
Publication Date: Fri Mar 10 00:59:59 CET 2017 International Filing Date: Sat Sep 26 01:59:59 CEST 2015
IPC: G02B 5/30
Applicants: 3M INNOVATIVE PROPERTIES COMPANY
Inventors: AMBUR, Gregg A.
WONG, Timothy L.
OUDERKIRK, Andrew J.
YUN, Zhisheng
Title: THERMOFORMED MULTILAYER REFLECTIVE POLARIZER
Abstract:
A thermoformed multilayer reflective polarizer substantially rotationally symmetric about an optical axis passing thorough an apex of the thermoformed multilayer reflective polarizer and convex along orthogonal first and second axes orthogonal to the optical axis is described. The thermoformed multilayer reflective polarizer has at least one first location having a radial distance r1 from the optical axis and a displacement s1 from a plane perpendicular to the optical axis at the apex, where s1/r1 is at least 0.2. The thermoformed multilayer reflective polarizer may have at least one inner layer substantially optically uniaxial at at least one first location away from the apex. For an area of the reflective polarizer defined by s1 and r1, a maximum variation of a transmission axis of the reflective polarizer may be less than about 2 degrees.