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. 21, 2009
Filed:
Jun. 07, 2007
Sang Hoon Lee, Chungcheongbuk-do, KR;
Han Kyu Cho, Chungcheongbuk-do, KR;
Jong-jin Kim, Chungcheongbuk-do, KR;
Sang Hoon Lee, Chungcheongbuk-do, KR;
Han Kyu Cho, Chungcheongbuk-do, KR;
Jong-Jin Kim, Chungcheongbuk-do, KR;
LG Electronics, Inc., Seoul, KR;
Abstract
The present invention is directed to a light pipe having an improved structure of prisms. According to one embodiment of the present invention, a hollow light pipe comprises an inner-surface including a linear array of prisms; and a substantially smooth outer-surface, wherein a pitch of prisms in a first region is wider than a pitch of prisms in a second region. According to another embodiment of the present invention, a hollow light pipe comprises a hollow base pipe; and an insertion inserted into the base pipe and having a structured surface including an array of prisms, wherein a pitch of prisms in a first region is wider than a pitch of prisms in a second region.