Search International and National Patent Collections

1. (WO2018178817) OPTICAL SYSTEM

Pub. No.:    WO/2018/178817    International Application No.:    PCT/IB2018/051906
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Thu Mar 22 00:59:59 CET 2018
IPC: G02B 17/08
G02B 5/30
G02B 27/28
G02B 27/01
Applicants: 3M INNOVATIVE PROPERTIES COMPANY
Inventors: STEINER, Michael L.
OUDERKIRK, Andrew J.
WONG, Timothy L.
YUN, Zhisheng
ETTER, Jo A.
BENOIT, Gilles J.
LE, John D.
MCDOWELL, Erin A.
Title: OPTICAL SYSTEM
Abstract:
An optical system including one or more optical lenses, at least one retarder layer, a reflective polarizer, and a partial reflector is provided. The at least one retarder layer may include first and second retarder layers having different wavelength dispersion curves. The at least one retarder layer may include a first retarder layer having a non-uniform fast axis orientation and/or a non-uniform retardance.