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:
Feb. 17, 2015
Filed:
Jul. 06, 2011
Applicant:
Woong Hwang, Seoul, KR;
Inventor:
Woong Hwang, Seoul, KR;
Assignee:
LG Innotek Co., Ltd., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 3/042 (2006.01); H04N 5/225 (2006.01); H04N 5/33 (2006.01);
U.S. Cl.
CPC ...
G06F 3/0425 (2013.01); G06F 3/0428 (2013.01); H04N 5/2257 (2013.01); H04N 5/33 (2013.01);
Abstract
The present invention relates to a camera module and an optical touch screen using the same, the camera module including an infrared emitting diode for emitting infrared ray, a first infrared pass filter passing only the infrared ray reflected by a retro reflector, an object lens condensing the infrared ray that has passed the first infrared pass filter, a second infrared pass filter passing an infrared ray of a particular wave band among the infrared ray condensed by the object lens, and a linear sensor for detecting an area touched by incidence of infrared ray that has passed the second infrared pass filter.