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1. (WO2017039715) OPTICAL STACK AND OPTICAL SYSTEM

Pub. No.:    WO/2017/039715    International Application No.:    PCT/US2015/052122
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
G02B 17/08
G02B 27/01
B29D 11/00
Applicants: 3M INNOVATIVE PROPERTIES COMPANY
Inventors: YUN, Zhisheng
OUDERKIRK, Andrew J.
WONG, Timothy L.
MCDOWELL, Erin A.
AMBUR, Gregg A.
Title: OPTICAL STACK AND OPTICAL SYSTEM
Abstract:
Integral optical stacks (2610) and optical systems including an image surface, a stop surface and an integral optical stack disposed between the image surface and the stop surface are described. The integral optical stack includes an optical lens (2622), a partial reflector (2617), a multilayer reflective polarizer (2627) and a quarter wave retarder (2625). At least one chief light ray transmitted through the stop surface and the image surface passes through the stop surface at an incident angle of at least 40 degrees.