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:
Jan. 18, 2005
Filed:
Apr. 21, 2003
Deuk IL Park, Suwon, KR;
Soon Cheon Cho, Bucheon, KR;
Sang Mook Kim, Suwon, KR;
OK Bin Sur, Ohsan, KR;
Choong Yop Rhew, Suwon, KR;
Min Ho Kim, Suwon, KR;
Chi Un JO, Anyang, KR;
Sung Su Zoo, Pyungtaek, KR;
Deuk Il Park, Suwon, KR;
Soon Cheon Cho, Bucheon, KR;
Sang Mook Kim, Suwon, KR;
Ok Bin Sur, Ohsan, KR;
Choong Yop Rhew, Suwon, KR;
Min Ho Kim, Suwon, KR;
Chi Un Jo, Anyang, KR;
Sung Su Zoo, Pyungtaek, KR;
LS Tech Co., Ltd., Hwasung, KR;
Abstract
An apparatus for manufacturing a surface light source apparatus in which a light guide pattern portion is formed on a light guide panel includes a pattern design system to which data about a pattern to be formed on the light guide pattern is input. A control system is connected to the pattern design system and transmits a position signal matching a coordinate value of each pattern to be formed on the light guide panel. A header moving portion mechanically moves vertically and horizontally according to the position signal received from the control system. A laser system outputs a laser beam according to a pulse signal synchronized with a movement of the header moving portion. A lens portion allows a laser beam output from the laser system to pass the header moving portion and to be focused on a scanning surface of the light guide panel. A warp prevention unit prevents the light guide panel from warping due to a local heating by the laser beam. An absorption and scattering prevention unit prevents smoke generated when the light guide pattern portion is formed on the light guide panel.