Patent · US Active

Retroreflecting optical construction

US8534849B2 · kind B2 · utility

9Cited by

107References

12Claims

0Family size

Assignee

3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

William D. Coggio · Hudson, US
John S. Huizinga · Dellwood, US
Michael L. Steiner · New Richmond, US
Robert F. Watkins · White Bear Lake, US
Encai Hao · Woodbury, US
William Blake Kolb · Windom, US
Peiwang Zhu · Woodbury, US
Michael Benton Free · Stillwater, US
Brant U. Kolb · Afton, US
Kui Chen-Ho · Woodbury, US
Paul E. Humpal · Stillwater, US
Kenneth L. Smith · White Bear Lake, US
Scott M. Tapio · Falcon Heights, US

Key dates

Filing date	Apr 15, 2010
Grant date	Sep 17, 2013
Priority date	—
Expiry date	Jul 30, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/24521
WIPO fieldOptics
WIPO sectorInstruments

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.