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1. (WO2010121019) RETROREFLECTING OPTICAL CONSTRUCTION

Pub. No.:    WO/2010/121019    International Application No.:    PCT/US2010/031225
Publication Date: Fri Oct 22 01:59:59 CEST 2010 International Filing Date: Fri Apr 16 01:59:59 CEST 2010
IPC: B32B 3/00
Applicants: 3M INNOVATIVE PROPERTIES COMPANY
COGGIO, William D.,
HUIZINGA, John S.,
STEINER, Michael L.,
WATKINS, Robert F.,
HAO, Encai,
KOLB, William Blake,
ZHU, Peiwang,
FREE, Michael Benton,
KOLB, Brant U.,
CHEN-HO, Kui,
HUMPAL, Paul E.,
SMITH, Kenneth L.,
TAPIO, Scott M.,
Inventors: COGGIO, William D.,
HUIZINGA, John S.,
STEINER, Michael L.,
WATKINS, Robert F.,
HAO, Encai,
KOLB, William Blake,
ZHU, Peiwang,
FREE, Michael Benton,
KOLB, Brant U.,
CHEN-HO, Kui,
HUMPAL, Paul E.,
SMITH, Kenneth L.,
TAPIO, Scott M.,
Title: RETROREFLECTING OPTICAL CONSTRUCTION
Abstract:
Retroreflecting optical constructions are disclosed. A disclosed retroreflecting optical construction includes a retroreflecting layer that has a retroreflecting structured major surface, and an optical film that is disposed on the retroreflecting structured major surface of the retroreflecting layer. The optical film has an optical haze that is not less than about 30%. Substantial portions of each two neighboring major surfaces in the retroreflecting optical construction are in physical contact with each other.