CN103914185A - Optical touch system - Google Patents
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- CN103914185A CN103914185A CN201310004943.7A CN201310004943A CN103914185A CN 103914185 A CN103914185 A CN 103914185A CN 201310004943 A CN201310004943 A CN 201310004943A CN 103914185 A CN103914185 A CN 103914185A
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Abstract
The invention discloses an optical touch system. The optical touch system comprises a first light emitting unit, a second light emitting unit, a first image sensor and a second image sensor; the first light emitting unit is used for generating the first waveband of light; the second light emitting unit is used for generating the second waveband of light; the first image sensor comprises a first filtering part; the first waveband of light is generated by the first light emitting unit when image capturing is performed through the first image sensor; the first waveband of light is allowed to enter into the first image sensor and the second waveband of light can be blocked to enter into the first image sensor due to the first filtering part; the second image sensor comprises a second filtering part; the second waveband of light is generated by the second light emitting unit when image capturing is performed through the second image sensor; the second waveband of light is allowed to enter into the second image sensor and the first waveband of light can be blocked to enter into the second image sensor due to the second filtering part.
Description
Technical field
The present invention is about a kind of optical touch control system.
Background technology
In optical touch control system, the image of image sensor acquisition object, touch-control system is then analyzed the position of object image in image, then according to the position calculation object coordinate of object image.
U.S. Patent Bulletin number the 4th, discloses a kind of optical touch control screen system for 782, No. 328, and it comprises two sensors and processor, and wherein processor couples two sensors.Two sensors are for capturing the image of the object on Touch Screen region.Processor determines to connect respectively the sense wire (sensing path) of object and two sensors, and then goes out the location coordinate of object according to sensing route calculation.
Optical touch control system can comprise light source, and light source can be luminous to the object on touch area, makes by this bright image of image sensor acquisition object.
Multiple light sources that optical touch control system can have multiple image sensor and use with multiple image sensor collocation, multiple image sensor and multiple light source are along the side setting of touch area.If when multiple image sensor are carried out image capture simultaneously, each image sensor can be subject to not the luminous impact at the light source of the same side in touch area.Especially in the time using small articles, under the impact of subtend illumination, object image can cannot be captured.For avoiding this type of impact, multiple image sensor adopt mode pick-up image in turn conventionally.But, when image sensor quantity is many and object when mobile, the object image that the object image that first image sensor captures and last image sensor capture has notable difference, and the result of calculation easily leading to errors.
Summary of the invention
The object of the present invention is to provide a kind of optical touch control system, for solving above-mentioned different problem.
The optical touch control system of one embodiment of the invention comprises at least one the first luminescence unit, at least one the second luminescence unit, at least one the first image sensor and at least one the second image sensor.At least one the first luminescence unit is for generation of the first band of light.At least one the second luminescence unit is for generation of the second band of light.At least one the first image sensor comprises one first optical filtering part.At least one the first luminescence unit produces the first band of light in the time that at least one the first image sensor is carried out image capture.The first optical filtering part allows the first band of light to enter at least one the first image sensor, but can stop that the second band of light enters at least one the first image sensor.At least one the second image sensor comprises one second optical filtering part.At least one the second luminescence unit produces the second band of light in the time that at least one the second image sensor is carried out image capture.The second optical filtering part allows the second band of light to enter at least one the second image sensor, but can stop that the first band of light enters at least one the second image sensor.
The optical touch control system of another embodiment of the present invention comprises at least one the first Image sensor apparatus and at least one the second Image sensor apparatus.At least one the first Image sensor apparatus comprises a luminescence unit and an image sensor.Image sensor comprises one first optical filtering part.The luminescence unit of the first Image sensor apparatus produces the light of the first wave band in the time that the image sensor of the first Image sensor apparatus is carried out image capture.At least one the second Image sensor apparatus comprises a luminescence unit and an image sensor.The image sensor of the second Image sensor apparatus comprises one second optical filtering part.The luminescence unit of the second Image sensor apparatus produces the light of the second wave band in the time that the image sensor of the second Image sensor apparatus is carried out image capture.The first optical filtering part allows the first band of light to pass through, and can stop the second band of light.The second optical filtering part allows the second band of light to pass through, and can stop the first band of light.
The optical touch control system of another embodiment of the present invention comprises one first group image sensing apparatus, one second group image sensing apparatus and a processing unit.The first group image sensing apparatus is positioned at by a side of a touch area.The second group image sensing apparatus is positioned at by a relative side of this side of touch area.The first group image sensing apparatus comprises one first Image sensor apparatus and one second Image sensor apparatus.The first Image sensor apparatus comprises a luminescence unit and an image sensor.Image sensor comprises an optical filtering part.The luminescence unit of the first Image sensor apparatus produces the first band of light in the time that the image sensor of the first Image sensor apparatus is carried out image capture.The second Image sensor apparatus comprises a luminescence unit and an image sensor.The image sensor of the second Image sensor apparatus comprises an optical filtering part.The luminescence unit of the second Image sensor apparatus produces the second band of light in the time that the image sensor of the second Image sensor apparatus is carried out image capture.The optical filtering part of the first Image sensor apparatus allow the first band of light by but can stop that the second band of light passes through.The optical filtering part of the second Image sensor apparatus allow the second band of light by but can stop that the first band of light passes through.The second group image sensing apparatus comprises one the 3rd Image sensor apparatus and one the 4th Image sensor apparatus.The 3rd Image sensor apparatus comprises a luminescence unit and an image sensor.The image sensor of the 3rd Image sensor apparatus comprises an optical filtering part.The luminescence unit of the 3rd Image sensor apparatus produces the first band of light in the time that the image sensor of the 3rd Image sensor apparatus is carried out image capture.The 4th Image sensor apparatus comprises a luminescence unit and an image sensor.The image sensor of the 4th Image sensor apparatus comprises an optical filtering part.The luminescence unit of the 4th Image sensor apparatus produces the second band of light in the time that the image sensor of the 4th Image sensor apparatus is carried out image capture.The optical filtering part of the 3rd Image sensor apparatus allow the first band of light by but can stop that the second band of light passes through.The optical filtering part of the 4th Image sensor apparatus allow the second band of light by but can stop that the first band of light passes through.
The optical touch control system of another embodiment of the present invention comprises the first and second Image sensor apparatus.In the first and second Image sensor apparatus, each comprises an image sensor and a luminescence unit.Image sensor comprises an optical filtering part.Luminescence unit provides light source in the time that image sensor captures an image.The first Image sensor apparatus is near the center, the visual field of the second device for image.
Above-mentioned optical touch control system is owing to using different-waveband light acquisition object image, makes at least part of image sensor can synchronous pick-up image, and the result of calculation that can not make a mistake.
The technical characterictic of this announcement of sketch out and advantage above, is obtained better understanding so that this announcement is below described in detail.Other technical characterictic and the advantage that form the claim scope of the applying for a patent target of this announcement will be described in below.In technical field, technician should understand under this announcement, and the concept below disclosing can be used as basis with specific embodiment and revised quite easily or design other structure or technique and realize with this and disclose identical object.In technical field, technician also should understand under this announcement, and the construction of this class equivalence also cannot depart from the spirit and scope of this announcement that the appended claim scope of applying for a patent proposes.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the optical touch control system of one embodiment of the invention;
Fig. 2 is the structural drawing of the optical touch control system of one embodiment of the invention;
Fig. 3 is the schematic diagram of the optical touch control system of another embodiment of the present invention;
Fig. 4 is the structural drawing of the optical touch control system of one embodiment of the invention;
Fig. 5 is the schematic diagram of the electronic system of one embodiment of the invention;
Fig. 6 is the schematic diagram of the optical touch control system of another embodiment of the present invention;
Fig. 7 is the structural drawing of the optical touch control system of one embodiment of the invention;
Fig. 8 is the schematic diagram of the optical touch control system of another embodiment of the present invention; And
Fig. 9 is the schematic diagram of the optical touch control system of another embodiment of the present invention.Wherein, description of reference numerals is as follows:
1 optical touch control system
3 optical touch control systems
5 electronic systems
6 optical touch control systems
8 optical touch control systems
9 optical touch control systems
10 regions
11 first luminescence units
12 second luminescence units
13 first image sensor
14 second image sensor
15 objects
16 first optical filtering parts
17 second optical filtering parts
19 back reflective devices
21 processing units
22 control circuits
30 touch areas
31,32,33,34,35,36 Image sensor apparatus
37 sides
41 processing units
42 control circuits
51 treating apparatus
52 display device
61 first Image sensor apparatus
62 second Image sensor apparatus
63 the 3rd Image sensor apparatus
64 the 4th Image sensor apparatus
65 the 5th Image sensor apparatus
66 the 6th Image sensor apparatus
70 first group image sensing apparatus
71 processing units
72 control circuits
80 second group image sensing apparatus
81 first Image sensor apparatus
82 second Image sensor apparatus
83 the 3rd Image sensor apparatus
90 the 3rd group image sensing apparatus
91 Image sensor apparatus
92 Image sensor apparatus
301 first subregions
302 second subregions
303 figures
304 figures
311,321,331,341,351,361 image sensor
312,322,332,342,352,362 luminescence units
313,323,333,343,352,362 optical filtering parts
611,621,631,641,651,661 image sensor
612,622,632,642,652,662 luminescence units
613,623,633,643,653,663 optical filtering parts
911 image sensor
912 optical filtering parts
913 luminescence units
921 image sensor
922 optical filtering parts
923 luminescence units
Embodiment
Fig. 1 is the schematic diagram of the optical touch control system 1 of one embodiment of the invention.Shown in Fig. 1, optical touch control system 1 comprises one first luminescence unit 11, one second luminescence unit 12, one first image sensor 13, and one second image sensor 14.The first image sensor 13 for example, for detecting the object 15 on a region 10 (: touch area).The first luminescence unit 11 first image sensor 13 of arranging in pairs or groups.The first luminescence unit 11, in the time that the first image sensor 13 captures the image of object 15, illuminates this object 15, to form the bright image of object 15 in the image producing in the first image sensor 13.The first luminescence unit 11 produces the first band of light.The first image sensor 13 can arrange one first optical filtering part 16, the first optical filtering parts 16 and can be wave band optical filter (band pass filter), and the first optical filtering part 16 allows the first band of light to enter the first image sensor 13.The second luminescence unit 12 second image sensor 14 of arranging in pairs or groups.The second luminescence unit 12, in the time that the second image sensor 14 captures the image of object 15, illuminates this object 15, to form the bright image of object 15 in the image producing in the second image sensor 14.The second luminescence unit 12 produces the second band of light.The second luminescence unit 12 can arrange the second optical filtering part 17, the second optical filtering parts 17 and can be wave band optical filter (band pass filter), and the second optical filtering part 17 allows the second band of light to enter the second image sensor 14.
In one embodiment, the first luminescence unit 11 can be irradiated to the second image sensor 14, and right the second optical filtering part 17 can stop that the first band of light that the first luminescence unit 11 sends enters the second image sensor 14.The second luminescence unit 12 can be irradiated to the first image sensor 13, and right the first optical filtering part 16 can stop that the second band of light that the second luminescence unit 12 sends enters the first image sensor 13.So, the first image sensor 13 and the second image sensor 14 can capture the image of object 15 simultaneously, and the luminous of light source that not used by non-collocation affects.
In one embodiment, the first optical filtering part 16 allows the first band of light to pass through, and stops that the band of light beyond the first band of light passes through.The second optical filtering part 17 allows the second band of light to pass through, and stops that the band of light beyond the second band of light passes through.
In one embodiment, the first band of light can have 850 nanometer (nanometers; Nm) centre wavelength (central wavelength), and the second band of light can have 940 nanometers (nanometers; Nm) centre wavelength (central wavelength).
In one embodiment, region 10 has relative two corners, and wherein the first luminescence unit 11 and the first image sensor 13 can be arranged on a corner wherein, and the second luminescence unit 12 and the second image sensor 14 can be arranged on another corner wherein.So, the first luminescence unit 11 and the second image sensor 14 are to arrange in opposite directions, and the second luminescence unit 12 and the first image sensor 13 are to arrange in opposite directions.
In one embodiment, region 10 has relative dual-side, and wherein the first luminescence unit 11 and the first image sensor 13 can be arranged at by a side, and the second luminescence unit 12 and the second image sensor 14 can be arranged at another side.
In one embodiment, region 10 has adjacent dual-side, and wherein the first luminescence unit 11 and the first image sensor 13 can be arranged at by a side, and the second luminescence unit 12 and the second image sensor 14 can be arranged at another side.
In one embodiment, the first luminescence unit 11 or the second luminescence unit 12 comprise light emitting diode, but the present invention is not as limit.
In one embodiment, the first luminescence unit 11 or the second luminescence unit 12 can comprise a wide frequency light source and an optical filtering part.
In one embodiment, the first luminescence unit 11 and the first image sensor 13 are integrated into an Image sensor apparatus; The second luminescence unit 12 and the second image sensor 14 are integrated into an Image sensor apparatus.In one embodiment, the first luminescence unit 11 and the first image sensor 13 are for independently installing respectively; The second luminescence unit 12 and the second image sensor 14 are for independently installing respectively.
Shown in Fig. 1, in one embodiment, optical touch control system 1 can comprise at least one back reflective device (retro-reflector) 19, and it is other that at least one back reflective device 19 is arranged at region 10, to reflect the first band of light or the second band of light.
Fig. 2 is the structural drawing of the optical touch control system 1 of one embodiment of the invention.Shown in Fig. 2, optical touch control system 1 can comprise a processing unit 21.Processing unit 21 is for controlling the first image sensor 13 and the second image sensor 14 pick-up images.In one embodiment, processing unit 21 is controlled the first image sensor 13 and the second image sensor 14 pick-up image simultaneously.In one embodiment, pick-up image when processing unit 21 is controlled the first image sensor 13 and the second image sensor 14 difference.
Shown in Fig. 2, optical touch control system 1 can comprise a control circuit 22, and wherein control circuit 22 couples the first luminescence unit 11 and the second luminescence unit 12.Control circuit 22 is used for controlling that the first luminescence unit 11 opens or closes and the second luminescence unit 12 opens or closes.Control circuit 22 couples processing unit 21, so in the time that processing unit 21 drives the first image sensor 13 pick-up image, Drive and Control Circuit 22 simultaneously, to open the first luminescence unit 11, allow the bright object image of the first image sensor 13 fechtable, and in the time that processing unit 21 drives the second image sensor 14, Drive and Control Circuit 22 simultaneously, to open the second luminescence unit 12, allow the bright object image of the second image sensor 14 fechtable.
Fig. 3 is the schematic diagram of the optical touch control system 3 of another embodiment of the present invention.Fig. 4 is the structural drawing of the optical touch control system 3 of one embodiment of the invention.Fig. 5 is the schematic diagram of the electronic system 5 of one embodiment of the invention.Shown in Fig. 3, optical touch control system 3 comprises multiple Image sensor apparatus (31,32,33,34,35 and 36), and it is other that wherein multiple Image sensor apparatus (31,32,33,34,35 and 36) are arranged at touch area 30.
In one embodiment, each Image sensor apparatus (31,32,35 or 36) comprises an image sensor (311,321,351 or 361), a luminescence unit (312,322,352 or 362) and an optical filtering part (313,323,353 or 363).Luminescence unit (312,322,352 and 362) can send the first band of light, illuminates the object 15 being positioned on touch area 30, so that the image of image sensor (311,321,351 and 361) fechtable object 15.Optical filtering part (313,323,353 and 363) is arranged at respectively the incidence surface of image sensor (311,321,351 and 361), and allows the first band of light reflecting from object 15 to enter image sensor (311,321,351 and 361).Image sensor (311,321,351 and 361) is for following the trail of the object 15 being positioned on touch area 30.In addition, each Image sensor apparatus (33 or 34) comprises an image sensor (331 or 341), a luminescence unit (332 or 342) and an optical filtering part (333 or 343).Luminescence unit (332 and 342) can send the second band of light, illuminates the object 15 being positioned on touch area 30, so that the image of image sensor (331 and 341) fechtable object 15.Optical filtering part (333 and 343) is arranged at respectively the incidence surface of image sensor (331 and 341), and allows the second band of light reflecting from object 15 to enter image sensor (331 and 341).Image sensor (331 and 341) is for following the trail of the object 15 being positioned on touch area 30.
In one embodiment, optical filtering part (313,323,353 and 363) can stop that the second band of light enters image sensor (311,321,351 and 361).Optical filtering part (333 and 343) can stop that the first band of light enters Image sensor apparatus (33 and 34).
In one embodiment, optical filtering part (313,323,353 and 363) can stop the first band of light band of light in addition.Optical filtering part (333 and 343) can stop the band of light beyond the second band of light.
In one embodiment, Image sensor apparatus (31,32,35 and 36) is arranged at by the same side of touch area 30, and Image sensor apparatus (31,32,35 and 36) is arranged at by the different sides of touch area 30 with Image sensor apparatus (33 and 34).
In one embodiment, touch area 30 has relative dual-side, and wherein Image sensor apparatus (31,32,35 and 36) is arranged at a side, and Image sensor apparatus (33 and 34) is arranged at another side.
In one embodiment, touch area 30 comprises four corners and a side 37, and wherein Image sensor apparatus (31,32,33 and 34) is arranged at respectively by four corners, and Image sensor apparatus (35 and 36) is arranged at side 37 sides.
Shown in Fig. 4, optical touch control system 3 comprises a processing unit 41, processing unit 41 can couple image sensor (311,321,331,341,351 and 361), to drive image sensor (311,321,331,341,351 and 361) pick-up image.In one embodiment, processing unit 41 drives image sensor (311,321,331,341,351 and 361) acquisition image simultaneously.
With reference to shown in Fig. 3 to Fig. 5, optical touch control system 3 is used in an electronic system 5, and electronic system 5 can separately comprise a treating apparatus 51 and a display device 52, wherein treating apparatus 51 couples optical touch control system 3 and display device 52, to control optical touch control system 3 and display device 52.
Display device 52 can comprise a screen, and touch area 30 can be positioned on this screen.In one embodiment, touch area 30 comprises one first subregion 301 and one second subregion 302, and the error between object coordinate and object physical location that wherein optical touch control system 3 calculates at the first subregion 301 is less than the error between object coordinate and the object physical location of calculating at the second subregion 302.For avoiding producing false touch, the figure (graphics) 304 that screen shows on the first subregion 301 is little compared with the figure (graphics) 303 showing on the second subregion 302.Under aforesaid configuration, processing unit 41 can drive image sensor (311,321,331,341,351 and 361) pick-up image simultaneously.
In one embodiment, can to send centre wavelength (central wavelength) be 850 nanometer (nanometers to luminescence unit (312,322,352 and 362); Nm) the first band of light; It is 940 nanometer (nanometers that luminescence unit (332 and 342) can send centre wavelength (central wavelength); Nm) the second band of light.
In one embodiment, can to send centre wavelength (central wavelength) be 940 nanometer (nanometers to luminescence unit (312,322,352 and 362); Nm) the first band of light; It is 850 nanometer (nanometers that luminescence unit (332 and 342) can send centre wavelength (central wavelength); Nm) the second band of light.
In one embodiment, luminescence unit (312,322,332,342,352 and 362) comprises light emitting diode.In one embodiment, luminescence unit (312,322,332,342,352 or 362) can comprise a wide frequency light source and an optical filtering part.
As shown in Figure 4, optical touch control system 3 comprises a control circuit 42, wherein control circuit 42 couples luminescence unit (312,322,332,342,352 and 362), to control opening or closing of luminescence unit (312,322,332,342,352 and 362).
Shown in Fig. 3, in one embodiment, optical touch control system 3 can comprise at least one back reflective device (retro-reflector) 19, and it is other that at least one back reflective device 19 is arranged at touch area 30.
Fig. 6 is the schematic diagram of the optical touch control system 6 of another embodiment of the present invention.Fig. 7 is the structural drawing of the optical touch control system 6 of one embodiment of the invention.Shown in Fig. 6 and Fig. 7, optical touch control system 6 comprises one first group image sensing apparatus 70, one second group image sensing apparatus 80 and one the 3rd group image sensing apparatus 90, and it is other that wherein the first group image sensing apparatus 70, the second group image sensing apparatus 80 and the 3rd group image sensing apparatus 90 are arranged at touch area 30.
The first group image sensing apparatus 70 is for following the trail of the object 15 on touch area 30.The first group image sensing apparatus 70 can comprise one first Image sensor apparatus 61 and one second Image sensor apparatus 62.The first Image sensor apparatus 61 can comprise an image sensor 611 and a luminescence unit 612.Image sensor 611 can comprise an optical filtering part 613.Luminescence unit 612 can send one first band of light, to illuminate object 15.Optical filtering part 613 is arranged in image sensor 611, and allows the first band of light reflecting from object 15 to enter image sensor 611, but stops that the second band of light enters image sensor 611.The image of image sensor 611 fechtable objects 15.Moreover the second Image sensor apparatus 62 can comprise an image sensor 621 and a luminescence unit 622.Image sensor 621 can comprise an optical filtering part 623.Luminescence unit 622 can send the second band of light, to illuminate object 15.Optical filtering part 623 is arranged in image sensor 621, and allows the second band of light reflecting from object 15 to enter image sensor 621, but stops that the first band of light enters image sensor 621.The image of image sensor 621 fechtable objects 15.
The second group image sensing apparatus 80 can comprise one the 3rd Image sensor apparatus 63 and one the 4th Image sensor apparatus 64 for object 15, the second group image sensing apparatus 80 of following the trail of on touch area 30.The first Image sensor apparatus 63 can comprise an image sensor 631 and a luminescence unit 632.Image sensor 631 can comprise an optical filtering part 633.Luminescence unit 632 can send one second band of light, to illuminate object 15.Optical filtering part 633 is arranged in image sensor 631, and allows the second band of light reflecting from object 15 to enter image sensor 631, but stops that the first band of light enters image sensor 631.The image of image sensor 631 fechtable objects 15.Moreover the 4th Image sensor apparatus 64 can comprise an image sensor 641 and a luminescence unit 642.Image sensor 641 can comprise an optical filtering part 643.Luminescence unit 642 can send one first band of light, to illuminate object 15.Optical filtering part 643 is arranged in image sensor 641, and allows the first band of light reflecting from object 15 to enter image sensor 641, but stops that the second band of light enters image sensor 641.The image of image sensor 641 fechtable objects 15.
The 3rd group image sensing apparatus 90 can comprise one the 5th Image sensor apparatus 65 and one the 6th Image sensor apparatus 66 for object 15, the three group image sensing apparatus 90 of following the trail of on touch area 30.The 5th Image sensor apparatus 65 can comprise an image sensor 651 and a luminescence unit 652.Image sensor 651 can comprise an optical filtering part 653.Luminescence unit 652 can send one first band of light, to illuminate object 15.Optical filtering part 653 is arranged in image sensor 651, and allows the first band of light reflecting from object 15 to enter image sensor 651, but stops that the second band of light enters image sensor 651.The image of image sensor 651 fechtable objects 15.Moreover the 6th Image sensor apparatus 66 can comprise an image sensor 661 and a luminescence unit 662.Image sensor 661 can comprise an optical filtering part 663.Luminescence unit 662 can send the second band of light, to illuminate object 15.Optical filtering part 663 is arranged in image sensor 661, and allows the second band of light reflecting from object 15 to enter image sensor 661, but stops that the first band of light enters image sensor 661.The image of image sensor 661 fechtable objects 15.
In another embodiment, in the 3rd group image sensing apparatus 90, luminescence unit 652 and luminescence unit 662 can send identical band of light, for example the first band of light or the second band of light; And the optical filtering part 653 of image sensor 651 and the optical filtering part 663 of image sensor 661 can allow this identical band of light to enter image sensor 651 and image sensor 661, but stop the band of light beyond this identical band of light.
In one embodiment, the visual field of the image sensor (651 and 661) in the 3rd group image sensing apparatus 90 is less than the visual field of the image sensor (611 and 621) of the first group image sensing apparatus 70 and/or the image sensor (631 and 641) of the second group image sensing apparatus 80.
Shown in Fig. 7, optical touch control system 6 comprises a processing unit 71, processing unit 71 couples the first group image sensing apparatus 70, the second group image sensing apparatus 80 and the 3rd group image sensing apparatus 90, and sequentially controls the first group image sensing apparatus 70, the second group image sensing apparatus 80 and the 3rd group image sensing apparatus 90 pick-up images.Optical touch control system 6 comprises a control circuit 72, and control circuit 72 is for driving luminescence unit (612,622,632,642,652 and 662).Control circuit 72 can couple processing unit 71.
Fig. 8 is the schematic diagram of the optical touch control system 8 of another embodiment of the present invention.Shown in Fig. 8, optical touch control system 8 comprises one first Image sensor apparatus 81, one second Image sensor apparatus 82 and one the 3rd Image sensor apparatus 83, wherein the second Image sensor apparatus 82 and the 3rd Image sensor apparatus 83 are arranged on by the same side in region 10, and the first Image sensor apparatus 81 is arranged at by the different sides in region 10.Each optical filtering part that all comprises a luminescence unit, an image sensor and pass through with the band of light that can allow this luminescence unit to send in the first Image sensor apparatus 81, the second Image sensor apparatus 82 and the 3rd Image sensor apparatus 83.
In one embodiment, the second Image sensor apparatus 82 and the 3rd Image sensor apparatus 83 are synchronous pick-up images, and in the time that the second Image sensor apparatus 82 carrys out pick-up image with any one and the identical band of light of the first Image sensor apparatus 81 use in the 3rd Image sensor apparatus 83, the first Image sensor apparatus 81 and the second Image sensor apparatus 82 and the 3rd Image sensor apparatus 83 both neutralize the first Image sensor apparatus 81 and use the asynchronous pick-up image of identical band of light person.
In one embodiment, the second Image sensor apparatus 82 and the 3rd Image sensor apparatus 83 are synchronous pick-up images, if and when in the second Image sensor apparatus 82 and the 3rd Image sensor apparatus 83, each and the first Image sensor apparatus 81 use different-waveband light carry out pick-up image, the first Image sensor apparatus 81, the second Image sensor apparatus 82 and the 3rd Image sensor apparatus 83 can synchronous pick-up images.
Aforementioned optical touch control system is not limited to use two kinds of band of light.
Fig. 9 is the schematic diagram of the optical touch control system 9 of another embodiment of the present invention.Shown in Fig. 9, optical touch control system 9 comprises two Image sensor apparatus (91 and 92).Image sensor apparatus 91 comprises an image sensor 911 and a luminescence unit 913.Image sensor 911 can comprise optical filtering part 912.Image sensor apparatus 92 comprises an image sensor 921 and a luminescence unit 923.Image sensor 921 can comprise optical filtering part 922.Image sensor apparatus 91 or image sensor 911 can have visual field θ, and wherein Image sensor apparatus 92 is near the visual field (field ofview; FOV) θ center.In one embodiment, Image sensor apparatus 92 is the half angles that are positioned at the CLZhi visual field, axis, the visual field boundary B L of Image sensor apparatus 92.
In one embodiment, luminescence unit (913 and 923) is to send different-waveband light.
In an embodiment of the present invention, optical touch control system comprises multiple Image sensor apparatus.Multiple Image sensor apparatus are pick-up image simultaneously, and therefore optical touch control system does not have because image captures at different time, and the problem of the result of calculation leading to errors.
In an embodiment of the present invention, optical touch control system comprises multiple Image sensor apparatus, and some of Image sensor apparatus are pick-up image simultaneously.Due to the simultaneously pick-up image of Image sensor apparatus of part, therefore can shorten the earliest and image capture time the latest, therefore can avoid the earliest problem excessive with image difference the latest and result of calculation that lead to errors.
In an embodiment of the present invention, optical touch control system comprises two Image sensor apparatus, and two Image sensor apparatus are obtained object image with different-waveband light.Owing to using different-waveband light, therefore two Image sensor apparatus pick-up image simultaneously, and non-interference.
In an embodiment of the present invention, optical touch control system comprises multiple Image sensor apparatus, its meta touch area different sides and obtain two Image sensor apparatus of object image with identical band of light can asynchronous pick-up image.In one embodiment, asynchronous acquisition two images refer at section overlapping time neither pick-up image respectively.In one embodiment, asynchronous acquisition two images refer at two parts section overlapping time pick-up image respectively.
In an embodiment of the present invention, optical touch control system comprises multiple group image sensing apparatus, and each group image sensing apparatus comprises multiple Image sensor apparatus, and wherein multiple group image sensing apparatus are pick-up images sequentially.In one embodiment, each group image sensing apparatus uses different-waveband light acquisition object image.In one embodiment, each group image sensing apparatus uses identical band of light acquisition object image.In one embodiment, different group image sensing apparatus use different-waveband light acquisition object image.
In an embodiment of the present invention, optical touch control system comprises multiple image sensor, multiple optical filtering part and multiple luminescence unit.Multiple luminescence units send different-waveband light.Multiple optical filtering parts allow different-waveband light to pass through, and correspondence is arranged in multiple image sensor.In one embodiment, multiple luminescence units are corresponding multiple image sensor.In another embodiment, the not corresponding multiple image sensor of multiple luminescence units.
Technology contents and the technical characterstic of this announcement disclose as above, but the teaching that the personage who is familiar with the technology still may be based on this announcement and announcement and do all replacement and modifications that does not deviate from this announcement spirit.Therefore, the protection domain of this announcement should be not limited to those disclosed embodiments, and should comprise various replacement and the modifications that do not deviate from this announcement, and is contained by following claim.
Claims (23)
1. an optical touch control system, comprises:
At least one the first luminescence unit, for generation of the first band of light;
At least one the second luminescence unit, for generation of the second band of light;
At least one the first image sensor, comprise one first optical filtering part, wherein this at least one first luminescence unit produces this first band of light in the time that this at least one first image sensor is carried out image capture, this the first optical filtering part allows this first band of light to enter this at least one the first image sensor, and can stop that this second band of light enters this at least one the first image sensor; And
At least one the second image sensor, comprise one second optical filtering part, wherein this at least one second luminescence unit produces this second band of light in the time that this at least one second image sensor is carried out image capture, this the second optical filtering part allows this second band of light to enter this at least one the second image sensor, and can stop that this first band of light enters this at least one the second image sensor.
2. optical touch control system according to claim 1, wherein this at least one first image sensor and this at least one the second luminescence unit are to arrange in opposite directions, and this at least one second image sensor and this at least one the first luminescence unit are to arrange in opposite directions.
3. optical touch control system according to claim 1, wherein this at least one first image sensor and this at least one second image sensor are arranged at respectively the relative both sides of a touch area, and this at least one first luminescence unit and this at least one second luminescence unit are also arranged at respectively these relative both sides of this touch area.
4. optical touch control system according to claim 1, comprises 4 first image sensor and two second image sensor.
5. optical touch control system according to claim 4, more comprises a processing unit, wherein this 4 first image sensor of this processing unit control and this two second image sensor synchronous pick-ups image.
6. optical touch control system according to claim 4, comprises to 4 first luminescence units that should 4 first image sensor and to two second luminescence units that should two second image sensor.
7. optical touch control system according to claim 1, more comprise a processing unit, wherein this touch area comprises relative dual-side, this at least one first image sensor comprises two first image sensor, this at least one second image sensor comprises two second image sensor, this two first image sensor lays respectively at this relative dual-side, this two second image sensor lays respectively at this relative dual-side, the wherein asynchronous pick-up image of this two first image sensor of this processing unit control, control the asynchronous pick-up image of two second image sensor, and control this first image sensor and this second image sensor synchronous pick-up image that are arranged in the same side of this relative dual-side.
8. optical touch control system according to claim 1, more comprises at least one back reflective device, and wherein this at least one back reflective device is used for reflecting this first band of light or this second band of light.
9. an optical touch control system, comprises:
At least one the first Image sensor apparatus, comprise a luminescence unit and an image sensor, this image sensor of this first Image sensor apparatus comprises one first optical filtering part, and this luminescence unit of this first Image sensor apparatus produces the light of the first wave band in the time that this image sensor of this first Image sensor apparatus is carried out image capture; And
At least one the second Image sensor apparatus, comprise a luminescence unit and an image sensor, this image sensor of this second Image sensor apparatus comprises one second optical filtering part, and this luminescence unit of this second Image sensor apparatus produces the light of the second wave band in the time that this image sensor of this second Image sensor apparatus is carried out image capture;
Wherein, this first optical filtering part allows this first band of light to pass through, and can stop this second band of light, and this second optical filtering part allows this second band of light to pass through, and can stop this first band of light.
10. optical touch control system according to claim 9, wherein this at least one first Image sensor apparatus and this at least one the second Image sensor apparatus are arranged at a same side, touch area.
11. optical touch control systems according to claim 9, wherein this at least one first Image sensor apparatus and this at least one the second Image sensor apparatus are separately positioned on the different sides with respect to a touch area.
12. optical touch control systems according to claim 9, wherein this at least one first Image sensor apparatus and this at least one the second Image sensor apparatus are arranged at respectively two corners adjacent on a touch area.
13. optical touch control systems according to claim 9, more comprise a processing unit, this first Image sensor apparatus is multiple and this second Image sensor apparatus is multiple, wherein the plurality of the first Image sensor apparatus is arranged at a side of a touch area, the plurality of the second Image sensor apparatus is arranged at another side of this touch area, the plurality of the first Image sensor apparatus of this processing unit control and the plurality of the second Image sensor apparatus synchronous pick-up image.
14. optical touch control systems according to claim 9, comprise a processing unit and two first Image sensor apparatus, wherein this two first Image sensor apparatus is arranged at respectively not homonymy of a touch area, the asynchronous pick-up image of this two first Image sensor apparatus of this processing unit control.
15. optical touch control systems according to claim 9, comprise 3 first Image sensor apparatus and 3 second Image sensor apparatus, wherein this 3 first Image sensor apparatus is arranged at respectively by two corners and a side of a touch area, and this 3 second Image sensor apparatus is arranged at respectively by another two corners and this side of a touch area.
16. optical touch control systems according to claim 9, more comprise at least one back reflective device, and wherein this at least one back reflective device is used for reflecting this first band of light or this second band of light.
17. 1 kinds of optical touch control systems, comprise:
One first group image sensing apparatus, is positioned at by a side of a touch area, comprises:
One first Image sensor apparatus, comprise a luminescence unit and an image sensor, this image sensor comprises an optical filtering part, and this luminescence unit of this first Image sensor apparatus produces the first band of light in the time that this image sensor of this first Image sensor apparatus is carried out image capture; And
One second Image sensor apparatus, comprise a luminescence unit and an image sensor, this image sensor of this second Image sensor apparatus comprises an optical filtering part, and this luminescence unit of this second Image sensor apparatus produces the second band of light in the time that this image sensor of this second Image sensor apparatus is carried out image capture;
Wherein, this optical filtering part of this first Image sensor apparatus allow this first band of light by but can stop that this second band of light passes through, and this optical filtering part of this second Image sensor apparatus allow this second band of light by but can stop that this first band of light passes through;
One second group image sensing apparatus, is positioned at by a relative side of this side of this touch area, comprises:
One the 3rd Image sensor apparatus, comprise a luminescence unit and an image sensor, this image sensor of the 3rd Image sensor apparatus comprises an optical filtering part, and this luminescence unit of the 3rd Image sensor apparatus produces this first band of light in the time that this image sensor of the 3rd Image sensor apparatus is carried out image capture; And
One the 4th Image sensor apparatus, comprise a luminescence unit and an image sensor, this image sensor of the 4th Image sensor apparatus comprises an optical filtering part, and this luminescence unit of the 4th Image sensor apparatus produces this second band of light in the time that this image sensor of the 4th Image sensor apparatus is carried out image capture; And
Wherein, this optical filtering part of the 3rd Image sensor apparatus allow this first band of light by but can stop that this second band of light passes through, and this optical filtering part of the 4th Image sensor apparatus allow this second band of light by but can stop that this first band of light passes through;
One processing unit, sequentially controls this first group image sensing apparatus, this second group image sensing apparatus and the 3rd group image sensing apparatus pick-up image.
18. optical touch control systems according to claim 17, more comprise one the 3rd group image sensing apparatus, are positioned at by this side of this touch area, and the 3rd group image sensing apparatus comprises:
One the 5th Image sensor apparatus, comprise a luminescence unit and an image sensor, this image sensor of the 5th Image sensor apparatus comprises an optical filtering part, and this luminescence unit of the 5th Image sensor apparatus produces a band of light in the time that this image sensor of the 5th Image sensor apparatus is carried out image capture; And
One the 6th Image sensor apparatus, comprise a luminescence unit and an image sensor, this image sensor of the 6th Image sensor apparatus comprises an optical filtering part, and this luminescence unit of the 6th Image sensor apparatus produces this band of light in the time that this image sensor of the 6th Image sensor apparatus is carried out image capture;
Wherein, this optical filtering part of the 5th Image sensor apparatus allow this band of light by but can stop that another band of light passes through, and this second optical filtering part of the 6th Image sensor apparatus allow this band of light by but can stop that another band of light passes through;
Wherein, when this band of light is this first wave band light time, this another band of light is this second band of light; Maybe, when this band of light is this second wave band light time, this another band of light is this first band of light.
19. optical touch control systems according to claim 18, wherein the visual field of this image sensor of the 3rd group image sensing apparatus be less than this first and the visual field of this image sensor of two group image sensing apparatus.
20. optical touch control systems according to claim 17, more comprise at least one back reflective device, and wherein this at least one back reflective device is used for reflecting this first band of light or this second band of light.
21. 1 kinds of optical touch control systems, comprise:
The first and second Image sensor apparatus, in this first and second Image sensor apparatus, each comprises:
One image sensor, has an optical filtering part; And
One luminescence unit provides light source in the time that this image sensor captures an image;
Wherein, this first Image sensor apparatus is near the center, the visual field of this second device for image.
22. optical touch control systems according to claim 21, wherein this first Image sensor apparatus is positioned at the axis, the visual field of this second device for image to the half angle on border, the visual field.
23. optical touch control systems according to claim 21, wherein this luminescence unit of this first Image sensor apparatus and this second device for image sends different-waveband light.
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| CN201310004943.7A CN103914185A (en) | 2013-01-07 | 2013-01-07 | Optical touch system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310004943.7A CN103914185A (en) | 2013-01-07 | 2013-01-07 | Optical touch system |
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Application publication date: 20140709 |