| 摘要 |
The present invention relates to an optical touch panel that enables optical touch using infrared light even from long distance without physical contact, the optical touch panel comprising: a light penetration screen for phasing the infrared light coming in from the front surface to disperse same according to the surface, and for letting through the visible light coming in through the back surface to the front surface; a first infrared light detection unit that is placed on the side surface of the light penetration screen, and comprises a plurality of infrared light detecting sensors that each detects the dispersed infrared light energy; a second infrared light detection unit that is placed on the side surface of the light penetration panel so as to be placed at a different location from the first infrared light detection unit, and comprises a plurality of infrared light detecting sensors that each detect the dispersed infrared light energy; and a calculation unit for calculating the image formation location of the infrared light using electric output signals of the infrared light sensors of the first infrared light detection unit, and the electric output signals of the infrared light sensors of the second infrared light detection unit, so that the present invention can carry out the convenient touch screening function from long distance without physical touch through the structure thereof. |
