Invention Grant
- Patent Title: Retroreflecting optical construction
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Application No.: US13970260Application Date: 2013-08-19
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Publication No.: US09291752B2Publication Date: 2016-03-22
- Inventor: William D. Coggio , John S Huizinga , Michael L. Steiner , Robert F. Watkins , Encai Hao , William B. Kolb , Peiwang Zhu , Michael Benton Free , Brant U. Kolb , Kui Chen-Ho , Paul E. Humpal , Scott M. Tapio , Kenneth L. Smith
- Applicant: 3M INNOVATIVE PROPERTIES COMPANY
- Applicant Address: US MN St. Paul
- Assignee: 3M Innovative Properties Company
- Current Assignee: 3M Innovative Properties Company
- Current Assignee Address: US MN St. Paul
- Main IPC: G02B5/124
- IPC: G02B5/124 ; G02B5/02

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.
Public/Granted literature
- US20150049384A1 RETROREFLECTING OPTICAL CONSTRUCTION Public/Granted day:2015-02-19
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