Invention Grant
US09122350B2 Optical touch apparatus capable of detecting displacement with two light beams and optical touch method thereof
有权
能够利用两个光束检测位移的光学触摸装置及其光学触摸方法
- Patent Title: Optical touch apparatus capable of detecting displacement with two light beams and optical touch method thereof
- Patent Title (中): 能够利用两个光束检测位移的光学触摸装置及其光学触摸方法
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Application No.: US13776118Application Date: 2013-02-25
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Publication No.: US09122350B2Publication Date: 2015-09-01
- Inventor: Ming-Tsan Kao , Hui-Hsuan Chen , Tien-Chia Liu , Hsin-Chia Chen
- Applicant: Ming-Tsan Kao , Hui-Hsuan Chen , Tien-Chia Liu , Hsin-Chia Chen
- Applicant Address: TW Hsin-Chu
- Assignee: PIXART IMAGING INCORPORATION, R.O.C.
- Current Assignee: PIXART IMAGING INCORPORATION, R.O.C.
- Current Assignee Address: TW Hsin-Chu
- Agency: Tung & Associates
- Priority: TW101108993A 20120316
- Main IPC: G06F3/0354
- IPC: G06F3/0354 ; G06F3/042 ; G06F3/03
Abstract:
An optical touch apparatus includes a first light source, a second light source, a light guide device, a light reflecting device and an image sensing module. The first light source emits first light beam which travels within the light guide device and is reflective by an object close to or in contact with a surface of the light guide device to become a first image light beam. The first image light beam is reflected by a light reflecting device. The image sensing module receives the first image light beam. The second light source emits a second light beam, wherein when the optical touch apparatus moves on a working surface, the second light beam is reflective by the working surface to form a second image light beam which is received by the same image sensing module.
Public/Granted literature
- US20130241884A1 OPTICAL TOUCH APPARATUS CAPABLE OF DETECTING DISPLACEMENT AND OPTICAL TOUCH METHOD THEREOF Public/Granted day:2013-09-19
Information query
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