Invention Application
- Patent Title: LIGHTGUIDE WITH OPTICAL FILM CONTAINING VOIDS AND BLACKLIGHT FOR DISPLAY SYSTEM
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Application No.: PCT/US2010/030984Application Date: 2010-04-14
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Publication No.: WO2010120845A3Publication Date: 2010-10-21
- Inventor: COGGIO, William, D., , WHEATLEY, John A., , LIU, Tao, , OSTLIE, Brian W., , HAO, Encai , KOLB, William Blake, , WANG, Qingbing, , FREE, Michael Benton, , STEINER, Michael L., , TAPIO, Scott M.,
- Applicant: 3M INNOVATIVE PROPERTIES COMPANY , COGGIO, William, D., , WHEATLEY, John A., , LIU, Tao, , OSTLIE, Brian W., , HAO, Encai , KOLB, William Blake, , WANG, Qingbing, , FREE, Michael Benton, , STEINER, Michael L., , TAPIO, Scott M.,
- Applicant Address: 3M Center Post Office Box 33427 Saint Paul, Minnesota 55133-3427 US
- Assignee: 3M INNOVATIVE PROPERTIES COMPANY,COGGIO, William, D.,,WHEATLEY, John A.,,LIU, Tao,,OSTLIE, Brian W.,,HAO, Encai,KOLB, William Blake,,WANG, Qingbing,,FREE, Michael Benton,,STEINER, Michael L.,,TAPIO, Scott M.,
- Current Assignee: 3M INNOVATIVE PROPERTIES COMPANY,COGGIO, William, D.,,WHEATLEY, John A.,,LIU, Tao,,OSTLIE, Brian W.,,HAO, Encai,KOLB, William Blake,,WANG, Qingbing,,FREE, Michael Benton,,STEINER, Michael L.,,TAPIO, Scott M.,
- Current Assignee Address: 3M Center Post Office Box 33427 Saint Paul, Minnesota 55133-3427 US
- Agency: MOSHREFZADEH, Robert S., et al.
- Priority: US61/169,555 20090415
- Main IPC: G02B6/00
- IPC: G02B6/00 ; G02B5/02
Abstract:
A lightguide (3690) is disclosed. The lightguide includes a light guiding layer (3610) for propagating light by total internal reflection, and an optical film (3640) that is disposed on the light guiding layer. The optical film includes a plurality of voids, an optical haze that is not less than about 30%, and a porosity that is not less than about 20%. Substantial portions of each two neighboring major surfaces (3614, 3642) in the lightguide are in physical contact with each other. The lightguide can be used as blacklight in a display system.
Information query
