Invention Grant
- Patent Title: Light directing film and method for making the same
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Application No.: US15804883Application Date: 2017-11-06
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Publication No.: US10197713B2Publication Date: 2019-02-05
- Inventor: Alan B. Campbell , Dale L. Ehnes , John F. Van Derlofske, III , Mark R. Dupre , Stephen J. Dreyer , Patrick H. Marushin , Todd M. Johnson , Bryan V. Hunt
- 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
- Agent Michael Stern
- Main IPC: G02B5/04
- IPC: G02B5/04 ; F21V8/00 ; G02F1/1335

Abstract:
A light directing film includes a structured major surface with a plurality of microstructures extending along a first direction. Each microstructure has a first region and a second region different from the first region, a substantially constant height in the first region and a non-constant maximum height in the second region greater than the substantially constant height in the first region, and a same lateral cross sectional shape in the first region and the second region.
Public/Granted literature
- US20180059294A1 LIGHT DIRECTING FILM AND METHOD FOR MAKING THE SAME Public/Granted day:2018-03-01
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