Patent ID: 9665212
Date: 2017-05-30
CPC Classifications: G06F

Claim:
1. A 3D (Three-Dimensional) infrared touch system, comprising: an infrared module for establishing two layers of infrared nets over a display device of a terminal for sensing a user touch operation; and an infrared recognition module for recognizing the user touch operation sensed by the two layers of infrared nets including a first infrared net and a second infrared net; wherein the infrared module comprises: an infrared ray transmitting unit comprising one row of infrared ray transmitters for transmitting infrared rays; an infrared ray receiving unit comprising two rows of infrared ray receivers for receiving the infrared rays, the two rows of infrared ray receivers including a first row of infrared ray receivers and a second row of infrared ray receivers; a plurality of total reflection light guide plates for reflecting the infrared rays; and a transflective light guide plate; wherein the first infrared net is established over the display device by the infrared rays, which are transmitted by the infrared ray transmitters, reflected by the transflective light guide plate, and then reflected to the first row of infrared ray receivers in turn via the plural total reflection light guide plates; and wherein the second infrared net is established over the display device by the infrared rays, which are transmitted by the infrared ray transmitters, pass the transflective light guide plate, and then are reflected to the second row of infrared ray receivers in turn via the plural total reflection light guide plates; and wherein the first infrared net is nearer to the display device than the second infrared net.