Invention Grant
- Patent Title: Light directing film
- Patent Title (中): 导光片
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Application No.: US13807166Application Date: 2011-06-29
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Publication No.: US09279559B2Publication Date: 2016-03-08
- Inventor: Audrey A. Sherman , Kevin R. Schaffer , David Scott Thompson , William Ward Merrill , Michael A. Meis
- Applicant: Audrey A. Sherman , Kevin R. Schaffer , David Scott Thompson , William Ward Merrill , Michael A. Meis
- 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 Steven Bern; Colene Blank
- International Application: PCT/US2011/042380 WO 20110629
- International Announcement: WO2012/012180 WO 20120126
- Main IPC: F21V5/00
- IPC: F21V5/00 ; F21V5/04 ; G02B3/00 ; G09F13/04 ; G09F13/14 ; G09F13/08
Abstract:
A light directing film includes a back major surface having light reflection regions and light transmission regions and being planar, and a front major surface opposing the back surface. The front surface is planar and a plurality of lenses is disposed between the front surface and the back surface. At least selected light transmission regions are registered with selected lens elements. A method for forming the light directing film and illuminated signs utilizing the light directing films are also described.
Public/Granted literature
- US20130100647A1 LIGHT DIRECTING FILM Public/Granted day:2013-04-25
Information query
