US 11,726,238 B2
Reflective stack with heat spreading layer
Clinton L. Jones, Somerset, WI (US); Jeremy O. Swanson, Woodbury, MN (US); Brian A. Kinder, Woodbury, MN (US); and Sara Jouzdani, Eagan, MN (US)
Assigned to 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)
Filed by 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)
Filed on Sep. 1, 2021, as Appl. No. 17/464,053.
Application 17/464,053 is a continuation of application No. 15/747,404, granted, now 11,125,921, previously published as PCT/US2016/043341, filed on Jul. 21, 2016.
Claims priority of provisional application 62/196,649, filed on Jul. 24, 2015.
Prior Publication US 2022/0128748 A1, Apr. 28, 2022
Int. Cl. G02B 5/08 (2006.01); B32B 27/06 (2006.01); G02B 5/28 (2006.01); B32B 9/00 (2006.01); B32B 9/04 (2006.01); F28F 3/08 (2006.01)
CPC G02B 5/0841 (2013.01) [B32B 9/007 (2013.01); B32B 9/045 (2013.01); B32B 27/06 (2013.01); F28F 3/08 (2013.01); G02B 5/285 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A reflective stack, comprising:
a first polymeric multilayer reflector having a major surface;
a heat spreading layer disposed on the major surface of the first polymeric multilayer reflector; and
a second polymeric multilayer reflector disposed on the heat spreading layer opposite the first polymeric multilayer reflector;
wherein the first polymeric multilayer reflector has a first thickness and the second polymeric multilayer reflector has a second thickness, and the first thickness and the second thickness are within 5% of each other, and wherein, from a plan view, each of the first and second polymeric multilayer reflectors is larger than the heat spreading layer.