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。

公开(公告)号：US09354749B2

公开(公告)日：2016-05-31

申请号：US14052481

申请日：2013-10-11

Applicant: PixArt Imaging Inc.

Inventor： Cheng-Nan Tsai ,  Tzung-Min Su ,  Chih-Hsin Lin ,  Yaun-Yu Peng ,  Yu-Chia Lin ,  Chuan-Ching Lin ,  Teng Wei Hsu

IPC: G06F3/042

CPC classification number: G06F3/042

Abstract: There is provided an optical touch system including a touch surface, a plurality of image sensors and a plurality or compensation light sources, wherein each of the image sensors is adjacent to one of the compensation light sources. When one of the image sensors is capturing an image frame, the compensation light source not adjacent to and within a field of view of the image sensor which is capturing the image frame irradiates so as to compensate a brightness distribution of the image frame.

Abstract translation: 提供了一种包括触摸表面，多个图像传感器和多个或补偿光源的光学触摸系统，其中每个图像传感器与补偿光源中的一个相邻。 当其中一个图像传感器正在拍摄图像帧时，不相邻并且在拍摄图像帧的图像传感器的视场内的补偿光源被照射以补偿图像帧的亮度分布。