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Hand input light pen and optical touch control system with same

A technology of handwriting input and light pen, which is applied in the input/output process of data processing, instruments, electrical digital data processing, etc., and can solve problems such as display screen damage

Inactive Publication Date: 2011-05-11
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is easy to damage the display screen by handwriting input in the form of physical contact.

Method used

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  • Hand input light pen and optical touch control system with same
  • Hand input light pen and optical touch control system with same
  • Hand input light pen and optical touch control system with same

Examples

Experimental program
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Embodiment Construction

[0011] The following describes the embodiments of the present invention in detail with reference to the accompanying drawings.

[0012] See figure 1 and figure 2 The handwriting input light pen 100 provided in the first embodiment of the present invention includes: a housing 10, an infrared light source 20, a converging lens 30, and a pen tip 40.

[0013] The housing 10 has a hollow cylindrical structure, such as a cylindrical or square cylindrical structure. In this embodiment, the housing 10 has a cylindrical structure. An accommodating space 12 is formed inside the housing 10, and the accommodating space 12 is used for accommodating the infrared light source 20 and the converging lens 30. The material of the housing 10 may be selected from metal or plastic.

[0014] The infrared light source 20 is an infrared light emitting diode to emit infrared light, which improves the detectability of light than visible light, so as to improve the detection accuracy of the detection equipme...

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PUM

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Abstract

The invention discloses an optical touch control system, comprising a hand input light pen and an infrared video shooting module. The hand input light pen comprises a shell, an infrared light source, a converging lens and a pen point. The pen point comprises an accepting end in the shell and a writing end which is back to the accepting end and located outside the shell, and the pen point is provided with a through hole penetrating through the pen point from the accepting end to the writing end. The converging lens is arranged at the accepting end. The infrared light source is located in the shell and used for emitting infrared light. The converging lens is used for converging the infrared light to make it pass through the through hole and project to the writing end so as to form infrared light dots. The infrared video shooting module is used for shooting movement tracks of the infrared light dots. The hand input light pen and the optical touch control system write in a hand writing region by the writing end, and simultaneously, the infrared light emitted by the light source projects at the writing end through the converging lens so as to form the infrared light dots, so that the light dots are formed, and hand input is implemented.

Description

Technical field [0001] The invention relates to a handwriting input light pen and an optical touch system with the handwriting input light pen. Background technique [0002] In electronic devices, the traditional handwriting input method is to use a metal or plastic stylus to write on the display screen with touch function. The display screen recognizes the writing track of the stylus pen to achieve handwriting input. the goal of. However, such a handwriting input by means of physical contact can easily damage the display screen. [0003] Currently, an emerging optical touch method has been developed. The optical touch method is to use a handwriting input light pen to project a light spot in a handwriting board area, and use the handwriting input light pen to write the text or graphics to be input, and then use a detection device to record the track of the light spot. The characters or graphics consistent with the movement trajectory of the light spot are obtained through calcul...

Claims

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Application Information

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IPC IPC(8): G06F3/033G06F3/042
CPCG06F3/03545
Inventor 张嘉淳何鸿隆
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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