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:
Jul. 06, 2010
Filed:
Nov. 10, 2008
Han Kyu Cho, Seoul, KR;
Han Kyu Cho, Seoul, KR;
LG Electronics Inc., Seoul, KR;
Abstract
A light pipe and an illuminating device having the light pipe are provided. The light pipe includes an optical film including a plurality of prisms and being rolled to have a cavity extending along a longitudinal direction of the prisms; and a supporter surrounding the optical film having the cavity, wherein a side surface of one of the prisms has the maximum surface roughness of about 600 nm to about 1.5 □. Accordingly, it is possible to emit a light toward a distant area through the diffraction of light and thus to provide uniform luminance.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile