Title :
An economical large area touch panel utilizing a compact optical configuration and linear optical sensors
Author :
Song, Zhang ; Jianshe, Ma ; Qian, Zhou ; Hongfend, Guo ; Xuemin, Cheng
Author_Institution :
Opt. Memory Nat. Eng. Res. Center, Tsinghua Univ., Shenzhen
Abstract :
An economical large area touch panel was presented. Through a new type of optical path constituted by specially arranged mirrors and other optical devices, the one-dimensional imaging of an object on top of the touch panel surface can be captured by one-dimensional optical sensors such as CCD, CMOS or PSD and its position can be located. Simple optical structure, less component and improved processing speed through the use of one-dimensional optical sensors, makes it suitable to large-space touch panel applications.
Keywords :
mirrors; optical sensors; touch sensitive screens; compact optical configuration; large-space touch panel surface; linear optical sensor; mirror arrangement; one-dimensional image; optical structure; Charge coupled devices; Delay; Electric resistance; Electromagnetic induction; Large screen displays; Optical devices; Optical imaging; Optical receivers; Optical sensors; Wires; optical sensor; touch panel;
Conference_Titel :
Imaging Systems and Techniques, 2009. IST '09. IEEE International Workshop on
Conference_Location :
Shenzhen
Print_ISBN :
978-1-4244-3482-4
Electronic_ISBN :
978-1-4244-3483-1
DOI :
10.1109/IST.2009.5071616
