Surface formed lenses on voided polymer light diffuser

Details Surface formed lenses on voided polymer light diffuser Surface formed lenses on voided polymer light diffuser

2005-05-10

2005-05-10

Vo, Hai (Department: 1771)

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

C428S318400, C428S304400, C428S913000, C359S707000, C359S628000, C359S622000, C359S599000, C359S741000

Reexamination Certificate

active

06890642

ABSTRACT:
Disclosed is a transparent polymeric diffusion film exhibiting at least 50% transmissivity containing a thermoplastic polymeric material with internal microvoids and containing a plurality of complex lenses on a surface thereof. Such films are useful for diffusing light when it is desired to provide and even light distribution.

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Copending Application No. 10/095,145, Bourdelais et al., “Surface Formed Complex Multi-Layered Polymer Lenses For Light Diffusion,” Sep. 11, 2003.*
Copending Application No. 10/095,172, Kaminsky et al., “Surfaced Formed Complex Polymer Lenses Diffuse Reflector,” Sep. 11, 2003.

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