The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 13, 2003
Filed:
Feb. 09, 2001
Kengo Imamura, Sagamihara, JP;
Kenji Matsumoto, Yamato, JP;
Shinichi Irie, Yamato, JP;
Atsushi Udagawa, Sagamihara, JP;
3M Innovative Properties Company, Saint Paul, MN (US);
Abstract
A light fiber of directional side light extraction type capable of keeping the sectional shape as desired, reducing the undesirable light leakage to the outside through the light diffusive and reflective portion and extracting a highly directional and a highly bright light, and a process for manufacturing the same. Said object can be attained by co-extruding a resinous material only, and a material obtained by light scattering fine particles with a resinous material to disperse them therein so as to form a light diffusive and reflective film in a desired portion at least on the inner periphery of the clad.