Invention Grant
- Patent Title: Light control film with off-axis visible indicia
- Patent Title (中): 具有离轴可见标记的光控膜
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Application No.: US12465481Application Date: 2009-05-13
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Publication No.: US08096667B2Publication Date: 2012-01-17
- Inventor: Gary T. Boyd , Dale L. Ehnes , Tri D. Pham
- Applicant: Gary T. Boyd , Dale L. Ehnes , Tri D. Pham
- 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 Kristofor L. Storvick
- Main IPC: G02B27/00
- IPC: G02B27/00

Abstract:
In one aspect, the invention provides a light control film having an indicium visible at a range of viewing angles. The light control film comprises a light input surface and a light output surface opposite the light input surface. The control film further comprises alternating transmissive and absorptive regions disposed between the light input surface and the light output surface. Each absorptive region has a height and a length, wherein the heights of the absorptive regions corresponding to the indicium are different that the heights of the absorptive regions that surround the absorptive regions corresponding to indicium.
Public/Granted literature
- US20090284836A1 LIGHT CONTROL FILM WITH OFF-AXIS VISIBLE INDICIA Public/Granted day:2009-11-19
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