Touch screen man-machine interactive system based on laser projection

A human-computer interaction, laser projection technology, applied in the camera body, optics, camera and other directions, can solve the problems of insufficient color brightness, short lamp life, complex system, etc., to achieve bright colors, high integration, expressiveness strong effect

Active Publication Date: 2013-05-01
YLX INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the whole system is too complicated in this way, and the position of the infrared light source and infrared camera needs to be adjusted during use
At

Method used

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  • Touch screen man-machine interactive system based on laser projection
  • Touch screen man-machine interactive system based on laser projection
  • Touch screen man-machine interactive system based on laser projection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] like figure 1 , figure 2 As shown, the human-computer interaction system of the present invention includes: a red laser light source 11, a green laser light source 12, a blue laser light source 13; beam combining mirrors 14, 15, wherein 14 is a red-green beam combining mirror, and 15 is a yellow-blue combining mirror beam mirror; laser speckle suppression module 16; projection display module 17 for generating projected images; projection lens 18; transmissive projection screen 19; small camera 20 for shooting backscattered images on the screen; A timing control circuit 21 for synchronizing the camera and the projection display module.

[0038] Three groups of monochromatic laser light sources, red laser light source 11, green laser light source 12, and blue laser light source 13 are three lasers or three sets of laser arrays of red, green and blue (RGB); wherein, the lasers can be solid-state lasers, semiconductors Lasers, fiber lasers, gas lasers, or a combination o...

Embodiment 2

[0041] like Figure 4 As shown, the human-computer interaction system includes: a red laser light source 11, a green laser light source 12, a blue laser light source 13; a red-green beam combiner 14, a yellow-blue beam combiner 15; a laser speckle suppression module 16; Projection display module 17; projection lens 18; small camera 20; timing control circuit 21; wedge-shaped screen 22.

[0042] This method is different from Embodiment 1 in that: the screen used is a wedge screen 22, so the structure of the wedge screen 22 and the parameters of the projection lens 18 need to be optimally designed to eliminate the unique image fault phenomenon displayed by the wedge; The projection display module 17 should project a preprocessed image matched with the wedge-shaped screen 22 to maintain display quality; after the small camera 20 captures the backscattered image guided by the wedge-shaped screen 22, it should perform image processing in order to obtain Actual screen backscattered...

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PUM

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Abstract

The invention relates to a touch screen man-machine interactive system based on laser projection. The existing touch system based on filament lamp light source projection technology and combined with infrared mapping basically realizes man-machine interaction on a large screen, but no touch system used for laser back projection exists currently; the touch screen man-machine interactive system solves the problems that the existing touch system has a complicated structure, is not bright in color, insufficient in brightness, short in the service life of a bulb, and needs an additional infrared source, and the like; the touch screen man-machine interactive system comprises a red, green and blue (RGB) color laser light source, a laser speckle restraining module, a projection display module, a time sequence control circuit, a lens, a minicam and a projection screen; the touch screen man-machine interactive system does not need an additional infrared source, has a simple structure, high stability and is light and small equipment applicable to the man-machine interaction in museums and home entertainment; and in addition, after the minicam is shutdown and the projection display module and the time sequence control circuit are adjusted, the touch screen man-machine interactive system can also be used for displaying general movies and videos, and has good compatibility.

Description

technical field [0001] The invention relates to the technical field of touch recognition and laser projection display, in particular to a touch screen human-computer interaction system based on laser projection. Background technique [0002] Projection display combined with touch recognition is a relatively common way of human-computer interaction at present. In a common implementation plan, an ordinary incandescent light source projector is used to project images, an infrared light source is set to illuminate the screen, and an infrared camera is set to capture infrared images of the screen to capture the user's finger movements on the screen. However, the whole system in this way is too complicated, and the positions of the infrared light source and the infrared camera need to be adjusted during use. At the same time, the projector uses an ordinary incandescent light source, the color gamut is small, the color is not bright enough, and the lamp life is short. With the fu...

Claims

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Application Information

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IPC IPC(8): G06F3/0488G06F3/042G03B17/54G02B27/48
Inventor 王书路王安廷明海顾春许立新董磊崔哲张雨蒙
Owner YLX INC
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