Patent Number: 8,791,923

Title: Touching device, laser source module, and laser source structure thereof

Abstract: The disclosure describes a touch device including a touching area having a first edge and a second edge; two reflective lens arrays and two laser source modules which are all disposed at the first edge and the second edge respectively, wherein each laser source module includes a laser diode and a diffractive optical element assembled in front of the laser diode for separating a laser beam projected from the laser diode to a plurality of laser beams with equal magnitude, the laser beams are distributed in a parallel arrangement over the touching area by the reflective lens array; and two receiving devices disposed at the corresponding edges of the first edge and the second edge respectively. The receiving device includes a plurality of sensing units, wherein each sensing unit receives one of the laser beams respectively.

Inventors: Chang; Heng-Yao (Tao-Yuan, TW), Su; Sheng-Pin (Tao-Yuan, TW)

Assignee: TPK Touch Solutions Inc.

International Classification: G06F 3/042 (20060101)

Expiration Date: 7/29/12018