Title:
CAMERA MODULE FOR AN OPTICAL TOUCH SCREEN
Document Type and Number:
WIPO Patent Application WO/2011/083956
Kind Code:
A2
Abstract:
The present invention relates to a camera module which senses the position of an object touching a touch surface of an optical touch screen. The camera module comprises one or more lenses, an optical path converting unit, and an image sensor. Each of the lenses is arranged such that the angle of view for the direction vertical to the touch surface is smaller than the angle of view for the direction horizontal to the touch surface. The optical path converting unit reflects light converging through the lenses in the direction vertical to the touch surface. The image sensor is arranged behind the lenses and in the direction horizontal to the touch surface so as to receive the light reflected by the optical path converting unit.
Inventors:
KIM SUNG-HAN (KR)
Application Number:
PCT/KR2011/000039
Publication Date:
July 14, 2011
Filing Date:
January 05, 2011
Export Citation:
Assignee:
KIM SUNG-HAN (KR)
International Classes:
H04N5/225; G06F3/041; G06F3/042
Foreign References:
| JP2008242996A | 2008-10-09 | |||
| KR20080044017A | 2008-05-20 | |||
| KR100919437B1 | 2009-09-29 |
Attorney, Agent or Firm:
SINJI PATENT FIRM (KR)
특허법인 신지 (KR)
특허법인 신지 (KR)
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Claims: