公开(公告)号：US20140176964A1

公开(公告)日：2014-06-26

申请号：US14011312

申请日：2013-08-27

Applicant: Pixart Imaging Inc.

Inventor： Tzung Min Su ,  Yu Chia Lin ,  Kuan Hsun Wang ,  Chuan-Ching Lin ,  Chih Hsin Lin

IPC: G01B11/00

CPC classification number: G01B11/002 ,  G06F3/0421

Abstract: An optical touch system comprises a first light-emitting unit, a second light-emitting unit, a first image sensor having a first filter, and a second image sensor having a second filter. The first light-emitting unit generates first wavelength band light. The second light-emitting unit generates second wavelength band light. The first light-emitting unit generates first wavelength band light when the first image sensor is capturing an image. The first filter allows first wavelength band light to enter into the first image sensor and blocks second wavelength band light. The second light-emitting unit generates second wavelength band light when the second image sensor is capturing an image. The second filter allows second wavelength band light to enter into the second image sensor and block first wavelength band light.

Abstract translation: 光学触摸系统包括第一发光单元，第二发光单元，具有第一滤光器的第一图像传感器和具有第二滤光器的第二图像传感器。 第一发光单元产生第一波长带光。 第二发光单元产生第二波长带光。 当第一图像传感器正在拍摄图像时，第一发光单元产生第一波长带光。 第一滤光器允许第一波长带光进入第一图像传感器并阻挡第二波长带光。 当第二图像传感器正在拍摄图像时，第二发光单元产生第二波长带光。 第二滤光器允许第二波长带光进入第二图像传感器并阻挡第一波长带光。