A method for generating an infrared light curtain parallel to a screen
An infrared light and infrared laser technology, applied in the field of intelligent interaction, to reduce costs, the detection process is simple and intuitive, and avoid excessive dependence.
Active Publication Date: 2018-12-18
北京仁光科技有限公司
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The accuracy and consistency of this detection method need to be further improved
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[0010] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, not all the embodiments.
[0011] It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other if there is no conflict. Hereinafter, the present application will be described in detail with reference to the drawings and in conjunction with embodiments.
[0012] figure 1 It is a schematic diagram of a device for generating an infrared light curtain parallel to a screen according to an embodiment of the present invention.
[0013] figure 1 Infrared laser diodes 101, 102, 103, 104..., n are shown in the...
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The present invention discloses a method for generating an infrared light curtain parallel to a screen. The method comprises: placing at least two infrared laser diodes on a screen so as to emit an infrared light beam; disposing a reflection platform on the emitting direction of the light beam; disposing a first target and a second target between the infrared laser diodes and the reflection platform, wherein both the first target and the second target are provided with laser perforations with a number greater than or equal to the number of the infrared laser diodes; and using an infrared camera to detect whether there is a bright spot on the reflection platform, and when there are bright spots with the number different from the number of the infrared laser diodes, implementing the adjustment on the infrared laser diode in each dimension, so that the number of bright spots formed on the final reflection platform is the same as the number of infrared laser diodes. The method disclosed by the present invention avoids the excessive dependence of the detection process on the contact recognition software and reduces the corresponding cost, and the method disclosed by the present invention generates an infrared light curtain parallel to the screen at a lower cost.
Description
Technical field [0001] The invention relates to the technical field of intelligent interaction, and in particular to a method for generating an infrared light curtain parallel to a screen. Background technique [0002] In the screen touch human-computer interaction system based on infrared light curtains, the existing infrared light curtains are superimposed on fan-shaped infrared surfaces emitted by multiple lasers. Since infrared light is invisible light, it is very difficult to determine whether the beams emitted by multiple lasers are parallel to the screen. The current main method is to act on the screen with a finger for touch. The infrared camera located in front (or behind) the screen can capture the image of the finger contact, and judge whether the light beam is parallel to the screen according to the area of the finger contact in the image. For example: when the finger contact area in the finger contact image is small, it is judged that the light beam is parallel to...
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IPC IPC(8): G06F3/042G06F3/041
CPCG06F3/0418G06F3/0425
Inventor 谭登峰池泉
Owner 北京仁光科技有限公司