发明名称 |
Touch-sensitive device |
摘要 |
The present invention relates to an optical touch-sensitive device and a method of determining a position and determining a position change of an object contacting an optical touch sensitive device. In particular, the present invention relates to an optical touch pad and a method of determining a position and determining a position change of an object contacting an optical touch pad. A touch-sensitive device, according to the present invention may comprise a light source, a touch-sensitive waveguide, a detector array, and a first light redirecting member, wherein at least a part of the light propagating towards a specific point of the detector array is prevented from being incident upon the specific point of the detector array when an object contacts a touch-sensitive surface of the touch-sensitive waveguide at a corresponding specific contact point. |
申请公布号 |
US9342187(B2) |
申请公布日期 |
2016.05.17 |
申请号 |
US200912812538 |
申请日期 |
2009.01.12 |
申请人 |
O-NET WAVETOUCH LIMITED |
发明人 |
Jakobsen Michael Linde;Hanson Vagn Steen Gruner;Pedersen Henrik Chresten |
分类号 |
G06F3/041;G06F3/042 |
主分类号 |
G06F3/041 |
代理机构 |
Hamilton, Brook, Smith & Reynolds, P.C. |
代理人 |
Hamilton, Brook, Smith & Reynolds, P.C. |
主权项 |
1. A touch-sensitive device, comprising:
a light source for emitting light into a touch-sensitive waveguide, the touch-sensitive waveguide comprising side parts and a touch-sensitive surface extending between the side parts of the touch-sensitive waveguide, the touch-sensitive waveguide being configured for guiding light from the light source towards the touch-sensitive surface of the touch-sensitive waveguide in such a way that at least part of the guided light may be disturbed by an object at a contact point where the object contacts the touch-sensitive surface, a detector array configured for detecting intensity distribution of light having propagated from the light source through the touch-sensitive waveguide for position encoding the contact point between the object and the touch-sensitive surface, and a first light redirecting member included in at least one of the side parts of the touch-sensitive waveguide, the first light redirecting member being configured for redirecting light having propagated from the light source through the touch-sensitive waveguide and to the first light redirecting member towards the detector array, such that the redirection of light involves changing the direction of propagation in a plane parallel to the touch-sensitive surface after having propagated under the touch-sensitive surface inside the touch-sensitive waveguide, wherein at least a part of the light propagating towards a specific point of the detector array is prevented from being incident upon the specific point of the detector array when the object contacts the touch-sensitive surface at a corresponding specific contact point. |
地址 |
Hong Kong CN |