CN203070268U - Touch screen human-machine interaction system based on laser projection - Google Patents
Touch screen human-machine interaction system based on laser projection Download PDFInfo
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- CN203070268U CN203070268U CN 201320046324 CN201320046324U CN203070268U CN 203070268 U CN203070268 U CN 203070268U CN 201320046324 CN201320046324 CN 201320046324 CN 201320046324 U CN201320046324 U CN 201320046324U CN 203070268 U CN203070268 U CN 203070268U
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Abstract
The utility model relates to a touch screen human-machine interaction system based on laser projection. A traditional projection technology based on an incandescent lamp light source is combined with an infrared projection touch system to basically realize human-machine interaction on a large screen, but a laser back projection touch system has not been invented yet at present. According to the touch screen human-machine interaction system disclosed by the utility model, the problems of complex structure, unbright colors, insufficient brightness, short service life of bulbs, need of extra infrared light sources and the like in a traditional touch system are solved. The touch screen human-machine interaction system comprises a red-green-blue (RGB) three-color laser light source, a laser speckle suppressing module, a projection display module, a time sequence control circuit, a camera lens, a minicam and a projection screen. The touch screen human-machine interaction system has the advantages of no need of additional infrared light source, simple structure, high stability, light and small equipment and suitability for human-machine interaction of museums and home entertainment. In addition, after the minicam is turned off and the projection display module and the time sequence control circuit are adjusted, the touch screen human-machine interaction system can also be used for playing and displaying general films and videos and has favorable compatibility.
Description
Technical field
The utility model relates to touch recognition and laser projection technique for displaying field, particularly a kind of touch-screen man-machine interactive system based on laser projection.
Background technology
Projection Display in conjunction with touch recognition is present more common a kind of man-machine interaction mode.In the common implementation, use ordinary incandescent lamp light source projector to come projected image, infrared light supply is set in addition shines screen, thermal camera is set comes the photographed screen infrared image, catch user's finger movement on screen with this.But this mode total system is too complicated, the position that needs to debug infrared light supply and thermal camera in the use.Simultaneously, projector uses the ordinary incandescent lamp light source, and colour gamut is less, and bright-colored property is not enough, and bulb life is short.Along with the further maturation of Laser Study, use and to improve display color quality and brightness with laser as the Projection Display of light source.And integrate light source and the camera that is used for touch recognition, and can simplify system, reduce production costs, promote stability.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, designs a kind of simple in structurely, stable, uses laser as projection light source, uses full frame gray scale image that projection goes out as the man-machine interactive system of touch recognition source images.In order to reach above purpose, the utility model adopts following technical scheme: a kind of touch-screen man-machine interactive system based on laser projection comprises: three groups of one-wavelength laser light sources, laser speckles suppress module 16, Projection Display module 17, projection lens 18, projection screen 19, minicam 20 and sequential control circuit 21; Three groups of one-wavelength laser light sources comprise: red laser light source 11, green laser light source 12 and blue laser light source 13; 11 rubescent look laser of red laser light source and 12 green-emitting laser of green laser light source quadrature are simultaneously with the blue laser light source 13 also quadratures of look laser that turn blue; Red-green light combination mirror 14 is positioned at 11 rubescent look laser of red laser light source and 12 green-emitting laser of green laser light source intersection, and Huang-blue light combination mirror 15 is positioned at and closes the Shu Guangyu blue laser light source 13 look laser intersections of turning blue through red-11 rubescent look laser of red laser light source after green light combination mirror 14 closes bundle and 12 green-emitting laser of green laser light source; The logical light that laser speckle suppresses module 16 partly is positioned at closing on the bundle light light path after Huang-blue light combination mirror 15 closes bundle; Light beam suppresses to shine on the Projection Display module 17 behind the module 16 through laser speckle, and the projected image light beam of Projection Display module 17 modulation is imaged on the transmission screen curtain 19 through projection lens 18; Miniature camera 20 is aimed at transmission screen curtain 19 and is taken; Sequential control circuit 21 connects Projection Display module 17 and miniature camera 20, and it is synchronous to control both.
Described projection screen 19 is screens of transmission-type, or described projection screen is the clapboard screen construction.
Described red laser light source 11, green laser light source 12 and blue laser light source 13 adopt three laser instruments or three groups of laser arrays of three looks.
Described laser instrument is the combination of solid state laser, semiconductor laser, fiber laser, gas laser or above-mentioned all kinds of laser instrument and crystal double frequency device.
It is electrooptical modulation type speckle suppression device or mechanical type speckle suppression device that described laser speckle suppresses module 16.
Described Projection Display module 17 is made of optical element and Projection Display chip.
The course of work of the present utility model is: three groups of one-wavelength laser light sources send RGB (RGB) one-wavelength laser, suppressing module by laser speckle carries out after speckle suppresses, enter the Projection Display module, in the Projection Display module internal, shine on the Projection Display chip by optical element, modulation through the Projection Display chip, timesharing ground produces high-quality colour projection image, and in colour projection's image, inserting full frame gray scale image with suitable frequency, these images are imaged on the projection screen curtain by projection lens; Minicam is aimed at whole projection screen, takes to sequential the backscattering light image of projection screen, contacts if user's hand produces with projection screen, then should can obviously strengthen by place's back-scattering light, and be photographed by minicam; Meanwhile, the full frame gray scale image that sequential control circuit inserts in projected image according to the Projection Display module, the adjusted in concert minicam, make the shooting of minicam only limit to the time period that this gray scale image occurs, after comprising the backscattering light image of finger position information on the projection screen that minicam optionally photographs, namely can be used for the touch-screen man-machine interaction.
Described Projection Display chip is colored sequential cake core, can be a kind of of DLP, LCD or LCoS.
The utility model beneficial effect compared with prior art is:
(1) the utility model is simple in structure, and stability is high, the degree of integration height, and debugging is more convenient with installation;
(2) the utility model has been abandoned infrared light as the touch recognition light source, has lacked a cover light source, and video camera also can adopt general white light video camera, can adopt more ripe components and parts, reduces the optimal design difficulty, effectively reduces cost;
(3) the utility model display color is more bright-coloured, and expressive force is strong, in museum's displaying or general home entertaining, both can be used for common display, also can be used for man-machine interaction.
Description of drawings
Fig. 1 for the present invention from directly over angle provided man-machine interactive system according to the embodiment 1 of the utility model general plotting;
Fig. 2 for the present invention from the side angle provided man-machine interactive system according to the embodiment 1 of the utility model general plotting;
A kind of mode that Fig. 3 controls minicam for the sequential control circuit among the present invention;
Fig. 4 has schematically provided the man-machine interactive system of another kind according to the embodiment 2 of the utility model general plotting;
Fig. 5 has schematically provided the structure of clapboard screen;
Among the figure, 11 is red laser light source; 12 is the green laser light source; 13 is blue laser light source; 14 is red-green light combination mirror; 15 is Huang-blue light combination mirror; 16 are laser speckle inhibition module; 17 is the Projection Display module; 18 is projection lens; 19 is transmissive viewing screen; 20 is miniature camera; 21 is sequential control circuit; 22 is the clapboard screen; 23 is light valve; 24 is the wedge shape light guide plate; 25 is anti-reflection film; 26 is the light turning film; 27 is scattering film.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Embodiment 1:
As shown in Figure 1 and Figure 2, the utility model man-machine interactive system comprises: red laser light source 11, green laser light source 12, blue laser light source 13,11 rubescent look laser of red laser light source and 12 green-emitting laser of green laser light source quadrature are with the blue laser light source 13 also quadratures of look laser that turn blue; Red-green light combination mirror 14 is positioned at 11 rubescent look laser of red laser light source and 12 green-emitting laser of green laser light source intersection, and Huang-blue light combination mirror 15 is positioned at through red-11 rubescent look laser of red laser light source after green light combination mirror 14 closes bundle and 12 green-emitting laser of green laser light source) close the Shu Guangyu blue laser light source 13 look laser intersections of turning blue; The logical light that laser speckle suppresses module 16 partly is positioned at closing on the bundle light light path after Huang-blue light combination mirror 15 closes bundle; Light beam suppresses to shine on the Projection Display module 17 behind the module 16 through laser speckle; The projected image light beam of Projection Display module 17 modulation is imaged on the transmission screen curtain 19 through projection lens 18; Miniature camera 20 is aimed at transmission screen curtain 19 and is taken; Sequential control circuit 21 connects Projection Display module 17 and miniature camera 20, and it is synchronous to control both.
Red laser light source 11, green laser light source 12, blue laser light source 13 is three laser instruments or three groups of laser arrays of RGB (RGB) three looks; Wherein, laser instrument can be the combination of solid state laser, semiconductor laser, fiber laser, gas laser or above-mentioned all kinds of laser instrument and crystal double frequency device; Three groups of light sources send RGB (RGB) one-wavelength laser, colour purity height.Red laser light source 11, green laser light source 12, the light that blue laser light source 13 is sent is combined into a branch of light after by light combination mirror 14,15, after its high coherence's light beam carries out the speckle inhibition by laser speckle inhibition module, enter Projection Display module 17, in Projection Display module 17 inside, optical element by necessity shines on the Projection Display chip, modulation through the Projection Display chip, timesharing ground produces high-quality colour projection image, and inserts full frame gray scale image with suitable frequency in colour projection's image.These images are imaged on the projection screen curtain 19 by projection lens 18.What should be noted that is, screen 19 is transmission-types, though projected light at screen 19 through scatterings, the direction of system's projection must be avoided user's direction of visual lines, becomes a suitable angle, to prevent that the high light direct projection is to the injury of human eye, as shown in Figure 2.Minicam 20 is aimed at whole screen 19, takes to sequential the backscattering light image of screen 19, contacts if user's hand produces with screen 19, then should can obviously strengthen by place's back-scattering light, and be photographed by minicam 20.Meanwhile, the full frame gray scale image that sequential control circuit 21 inserts in projected image according to Projection Display module 17, adjusted in concert minicam 20 makes its shooting only limit to the time period that this gray scale image occurs.After comprising the backscattering light image of finger position information on the screen 19 that minicam 20 optionally photographs, namely can be used for the touch-screen man-machine interaction.
Fig. 3 has schematically provided the regulative mode of 21 pairs of minicams 20 of a kind of sequential control circuit, namely adds light valve 23 in the lens system of minicam 20.In the time period of the full frame gray scale image of Projection Display module 17 projections, sequential control circuit 21 control light valves 23 are opened, all the other time periods, control light valve 23 is closed, and regulates the purpose that minicam 20 makes it take at the time period of gray scale image thereby reach.This mode makes the response characteristic of minicam 20 needn't reach very high quality and gets final product, and provides cost savings, and the control of light valve 23 simultaneously makes system principle simple, and stability is higher.
Embodiment 2:
As shown in Figure 4, the man-machine interactive system in the embodiment of the invention comprises: 11 rubescent look laser of red laser light source and 12 green-emitting laser of green laser light source quadrature, with the blue laser light source 13 also quadratures of look laser that turn blue; Light combination mirror 14,15, wherein 14 is red-green light combination mirror, be positioned at 11 rubescent look laser of red laser light source and 12 green-emitting laser of green laser light source intersection, Huang-blue light combination mirror 15 is positioned at (11 rubescent look laser of red laser light source and 12 the green-emitting laser of green laser light source) that red-green light combination mirror 14 closes behind the bundle and closes the Shu Guangyu blue laser light source 13 look laser intersections of turning blue; Laser speckle suppresses module 16 logical light and partly is positioned at closing on the bundle light light path after Huang-blue light combination mirror 15 closes bundle; Light beam suppresses to shine on the Projection Display module 17 behind the module 16 through laser speckle; The projected image light beam of Projection Display module 17 modulation enters from the thickness light inlet of clapboard screen 22 behind projection lens 18, is imaged on the plane of clapboard screen 22; Miniature camera 20 is aimed at the thickness backreflection light-emitting window of clapboard screen 22 and is taken; Sequential control circuit 21 connects Projection Display module 17 and miniature camera 20, and it is synchronous to control both.
This mode is different from embodiment 1 part and is: employed screen is clapboard screen 22, so the parameter of the structure of this clapboard screen 22 and projection lens 18 need show distinctive image slices phenomenon to eliminate clapboard through optimal design; Projection Display module 17 should throw through the pretreated image that mates with clapboard screen 22 to keep display quality; Minicam 20 is photographing behind the backscatter images of clapboard screen 22 leaded lights, should carry out image and handle in the hope of obtaining the actual screen backscatter images that has the finger touch positional information.This mode is used clapboard screen 22, has avoided the pleasing to the eye danger of the unexpected direct projection of high light fully, more compact structure, and requisite space is littler.
Fig. 5 has schematically provided the concrete structure of employed clapboard screen 22 among the embodiment 2, comprising: wedge shape light guide plate 24; Anti-reflection film 25; Light turning film 26; Scattering film 27, wherein wedge shape light guide plate 24 constitutes body supports, covers one deck anti-reflection film 25 on it successively, one deck light turning film 26, one deck scattering film 27.Wedge shape light guide plate 24 leads screen everywhere with projected light, because the structure of its wedge shape, when the light total reflection condition in somewhere was destroyed on screen, this place's projected light just can be from the screen surface outgoing.Anti-reflection film 25 can make near light transmissivity the during outgoing cirtical angle of total reflection greatly strengthen, thereby makes the light intensity basically identical of image, and eliminates the peculiar image blanking bar of clapboard screen lamination problem.Light turning film 26 makes and changes by anti-reflection film 25 later radiation directions, becomes the approximate light that is parallel to the clapboard surface normal.Scattering film 27 makes by the later light generation scattering of light turning film 26, thereby improves the viewing angle characteristic of display screen, to allow the user see clear bright image in bigger angular range.
In a word, existingly exist complex structure based on the touch system of incandescent light source shadow casting technique in conjunction with photographic IR, color is not bright-coloured, and brightness is not enough, and bulb service life is short and need problem such as extra infrared light supply.The utility model proposes that a kind of use laser projection carries out Projection Display and on projection screen, realize interactive means based on touch recognition, need not add infrared light supply in addition, simple in structure, stability is high, degree of integration is high, debugging with install more convenient;
What need in addition to explain is, the disclosed touch-screen man-machine interactive system of the utility model shows at the laser rear projection type and the laser clapboard shows, if remove red laser light source 11, green laser light source 12, blue laser light source 13, and change to the three-color LED light source or change incandescent light source into, can realize the man-machine interaction of touch recognition equally, system architecture is simple, the light little advantage of equipment is still kept.This transformation does not break away from the spirit and scope of technical solutions of the utility model, should be encompassed in the claim scope of the present utility model.
The utility model does not elaborate part and belongs to techniques well known.
It should be noted last that, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, under the situation that does not deviate from of the present utility model profound and scope defined by the appended claims, can carry out various other variations, replacement and transformation.It will be understood by those of skill in the art that for the technical solution of the utility model and carry out other modifications or be equal to replacement that do not break away from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (6)
1. the touch-screen man-machine interactive system based on laser projection is characterized in that comprising: three groups of one-wavelength laser light sources, laser speckles inhibition module (16), Projection Display module (17), projection lens (18), projection screen (19), minicam (20) and sequential control circuits (21); Three groups of one-wavelength laser light sources comprise: red laser light source (11), green laser light source (12) and blue laser light source (13); The rubescent look laser of red laser light source (11) institute and green laser light source (12) institute green-emitting laser quadrature, while and blue laser light source (13) the also quadrature of look laser that turns blue; Red-green light combination mirror (14) is positioned at the rubescent look laser of red laser light source (11) institute and green-emitting laser intersection of green laser light source (12) institute, Huang-blue light combination mirror (15) be positioned at through red-red laser light source (11) after green light combination mirror (14) closes bundle rubescent look laser and green laser light source (12) institute green-emitting laser close Shu Guangyu blue laser light source (13) the look laser intersection of turning blue; The logical light that laser speckle suppresses module (16) partly is positioned at closing on the bundle light light path after Huang-blue light combination mirror (15) closes bundle; Light beam suppresses to shine on the Projection Display module (17) behind the module (16) through laser speckle, and the projected image light beam of Projection Display module (17) modulation is imaged on the transmission screen curtain (19) through projection lens (18); Miniature camera (20) is aimed at transmission screen curtain (19) and is taken; Sequential control circuit (21) connects Projection Display module (17) and miniature camera (20), and it is synchronous to control both.
2. according to the described touch-screen man-machine interactive system based on laser projection of claim 1, it is characterized in that: described projection screen (19) is transmissive viewing screen or clapboard screen.
3. the touch-screen man-machine interactive system based on laser projection according to claim 1 is characterized in that: three laser instruments or three groups of laser arrays of described red laser light source (11), green laser light source (12) and blue laser light source (13) employing three looks.
4. the touch-screen man-machine interactive system based on laser projection according to claim 3, it is characterized in that: described laser instrument is the combination of solid state laser, semiconductor laser, fiber laser, gas laser or above-mentioned all kinds of laser instrument and crystal double frequency device.
5. the touch-screen man-machine interactive system based on laser projection according to claim 1 is characterized in that: it is electrooptical modulation type speckle suppression device or mechanical type speckle suppression device that described laser speckle suppresses module (16).
6. the touch-screen man-machine interactive system based on laser projection according to claim 1, it is characterized in that: described Projection Display module (17) is made of optical element and Projection Display chip.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201320046324 CN203070268U (en) | 2013-01-28 | 2013-01-28 | Touch screen human-machine interaction system based on laser projection |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201320046324 CN203070268U (en) | 2013-01-28 | 2013-01-28 | Touch screen human-machine interaction system based on laser projection |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104657973A (en) * | 2013-11-25 | 2015-05-27 | 联想(北京)有限公司 | Image processing method, electronic equipment and control unit |
| CN105158922A (en) * | 2015-10-09 | 2015-12-16 | 杭州虹视科技有限公司 | Laser device, laser display system, and laser projection system capable of eliminating speckles |
| TWI719867B (en) * | 2020-03-06 | 2021-02-21 | 中強光電股份有限公司 | Feature surface projection system and projection method for feature surface |
-
2013
- 2013-01-28 CN CN 201320046324 patent/CN203070268U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104657973A (en) * | 2013-11-25 | 2015-05-27 | 联想(北京)有限公司 | Image processing method, electronic equipment and control unit |
| CN104657973B (en) * | 2013-11-25 | 2018-12-14 | 联想(北京)有限公司 | A kind of image processing method, electronic equipment and control system |
| CN105158922A (en) * | 2015-10-09 | 2015-12-16 | 杭州虹视科技有限公司 | Laser device, laser display system, and laser projection system capable of eliminating speckles |
| TWI719867B (en) * | 2020-03-06 | 2021-02-21 | 中強光電股份有限公司 | Feature surface projection system and projection method for feature surface |
| US11842568B2 (en) | 2020-03-06 | 2023-12-12 | Coretronic Corporation | Feature surface projection system and projection method for feature surface |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20160128 |
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| EXPY | Termination of patent right or utility model |