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1. (WO2013119479) OPTICAL TOUCH NAVIGATION

Pub. No.:    WO/2013/119479    International Application No.:    PCT/US2013/024556
Publication Date: Fri Aug 16 01:59:59 CEST 2013 International Filing Date: Tue Feb 05 00:59:59 CET 2013
IPC: G06F 3/042
F21S 2/00
Applicants: MICROSOFT CORPORATION
Inventors: PICCIOTTO, Carl
LUTIAN, John
LANE, Dave
FU, Yijing
Title: OPTICAL TOUCH NAVIGATION
Abstract:
The present disclosure describes touch interfaces that feature optical touch navigation. A lighting device distributes a light over an optical element that, in turn, generates a light beam at an exit of the optical element by internally reflecting the light. A sensing device captures images in response to the light beam striking the sensing device. A processing device detects an object proximate to the optical element by comparing successive images captured by the sensing device.