Laser & Optoelectronics Progress, Volume. 56, Issue 3, 031101(2019)
Touch-Imaging Method Employing Laser-Ionized Air
The theoretical structure for generating floating images from laser-ionized air is described and tested. A sensor mechanism by which users can interact with these images via touch is also proposed. The image-projection and touch feedback system uses a low-power femtosecond laser to ionize the air to create images and senses tactile interactions by detecting the laser echo. This method can be used for detecting a touch signal that changes the image position and for determining the location of a touch via triangulation. The proposed system can be applied in holographic projection imaging, fog-screen imaging, and laser imaging combined with ionized air. The holographic projection image or fog imaging screen is used to form a basic image, and the laser-ionized air is used to form images for touch interactions and buttons.
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Zhenxin Huang, Qingsheng Chen, Jiayi Sun. Touch-Imaging Method Employing Laser-Ionized Air[J]. Laser & Optoelectronics Progress, 2019, 56(3): 031101
Category: Imaging Systems
Received: May. 14, 2018
Accepted: Aug. 13, 2018
Published Online: Jul. 31, 2019
The Author Email: Huang Zhenxin (gentle_xin@163.com)