Invention Grant
- Patent Title: Lightguide
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Application No.: US16497012Application Date: 2018-03-12
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Publication No.: US10775547B2Publication Date: 2020-09-15
- Inventor: Robert M. Emmons , David A. Rosen , Nicholas A. Johnson , Gary T. Boyd , Trevor W. Stolber , Owen M. Anderson , Graham M. Clarke , Sherie A. Kristie , Edward C. Roberts , Kristy A. Gillette
- Applicant: 3M INNOVATIVE PROPERTIES COMPANY
- Applicant Address: US MN St. Paul
- Assignee: 3M Innovation Properties Company
- Current Assignee: 3M Innovation Properties Company
- Current Assignee Address: US MN St. Paul
- Agent Clifton F. Richardson
- International Application: PCT/IB2018/051629 WO 20180312
- International Announcement: WO2018/178790 WO 20181004
- Main IPC: F21V8/00
- IPC: F21V8/00

Abstract:
A lightguide having opposing first and second major surfaces where the first major surface includes a plurality of extended features and a plurality of discrete features is described. The lightguide has a viewable area having a length at least 100 times a thickness of the lightguide. The extended features extend in a first in-plane direction across at least 90 percent of the length L of the viewable area. The discrete features are spaced apart along the length and width of the viewable area. The discrete features may be disposed in spaces between the extended features. The discrete features may have faces extending between and connecting adjacent extended features.
Public/Granted literature
- US20200103578A1 LIGHTGUIDE Public/Granted day:2020-04-02
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