CN102270065A - Light source used in optical touch system - Google Patents

Light source used in optical touch system Download PDF

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Publication number
CN102270065A
CN102270065A CN2011100603096A CN201110060309A CN102270065A CN 102270065 A CN102270065 A CN 102270065A CN 2011100603096 A CN2011100603096 A CN 2011100603096A CN 201110060309 A CN201110060309 A CN 201110060309A CN 102270065 A CN102270065 A CN 102270065A
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CN
China
Prior art keywords
component
leaded light
light component
light
luminescence
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Pending
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CN2011100603096A
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Chinese (zh)
Inventor
唐建兴
江长轩
李俊仁
陈志名
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Qisda Suzhou Co Ltd
Qisda Corp
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Qisda Suzhou Co Ltd
Qisda Corp
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Application filed by Qisda Suzhou Co Ltd, Qisda Corp filed Critical Qisda Suzhou Co Ltd
Priority to CN2011100603096A priority Critical patent/CN102270065A/en
Publication of CN102270065A publication Critical patent/CN102270065A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a light source used in an optical touch system so as to solve the problem of insufficient and non-uniform brightness of the existing light source. The light source disclosed by the invention comprises a first strip light conducting assembly, a first light emitting assembly and N second light emitting assemblies, wherein N is a natural number. The first light conducting assembly is provided with a first end surface. The first light conducting assembly is arranged on the edge of an indication space. The first light emitting assembly is arranged on the first end surface of the first light conducting assembly. The N second light emitting assemblies are arranged below or above the first light conducting assembly, and are away from the first end surface. The first light emitting assembly and the N second light emitting assemblies are driven synchronously so as to transmit a first light to the first light conducting assembly. The first light is led in by the first light conducting assembly and passes through the indication space.

Description

Be used for the light source in the optical touch control system
[technical field]
The present invention is about a kind of light source (light source), and especially, the present invention is about a kind of light source that is used for optical touch control system (optical touch system).
[background technology]
Because touch control screen (touch screen) can allow the operator intuitively see through the advantage that the coordinate input of relative display is carried out in the way of contact, touch control screen has become the input media of the common configuration of display now.Touch control screen has been widely used in all kinds of electronic products with display, for example, and monitor, mobile computer, flat computer, ATM (Automatic Teller Machine), point-of-sale terminals, visitor's guide system, industrial control system, etc.
Except the Touch Screen that operators such as traditional resistor formula, condenser type must contact, the coordinate input mode of utilizing camera assembly (image-capturing device) to allow the operator need not really to touch display also is used.Utilize the related prior art of the contactless touch-control system (or being called optical touch control system) of camera assembly to ask for an interview the 4th, 507, No. 557 patents of United States Patent (USP) notification number, seldom do at this and give unnecessary details.Above-mentioned in the optical image mode, the optical touch control system of reaching the object space judgement also can be applied to touch-control plotting sheet, touch control controller except that can be applicable to Touch Screen, etc.
The operation principles of optical touch control system is when the screen of object or finger touches configuration optical touch control system (or touch-control plotting sheet, touch control controller), and finger or object can block the light source at the edge that is set up in screen (or touch-control plotting sheet, touch control controller) in the optical touch control system or reflecting assembly and cause shade.So camera assembly will detect a dark relatively signal (image).By the angle function equation of the online foundation of shade and camera assembly,, can obtain the position of finger or object via the computing of software.Usually optical touch control system has plural camera assembly, sets up at least two angle function equations, in the hope of at least one about pointing or the separating of the position of object.But if finger or object be to shade that light source caused inadequately obviously the time, then aforesaid equation possibly can't be set up, and causes trying to achieve the position of finger or object.The reason that causes camera assembly can't detect tangible shade has a lot, but one of them important reasons is the brightness of light source or the demand that the light uniformity coefficient does not meet system.
See also Fig. 1, the part assembly of a traditional optical touch control system 1 schematically is illustrated among Fig. 1.Generally speaking, this optical touch control system 1 is configured on a screen, a touch-control plotting sheet or the touch control controller.This optical touch control system 1 has an indication space S 1.This indication space S 1 promptly is positioned at the top of screen, touch-control plotting sheet or touch control controller that this optical touch control system 1 disposed.
As shown in Figure 1, this optical touch control system 1 comprises camera assembly 16, the camera assembly 18 of two corner location that are installed in this indication space S 1 and is set up in light source 10 on the edge of this indication space S 1.When causing shade when finger or this light source 10 of object or reflecting assembly (not being illustrated among Fig. 1), these camera assemblies (16,18) will detect a dark relatively signal (image).
Be shown in Fig. 1 equally, this light source 10 comprises luminescence component 12 (generally adopting light emitting diode) and leaded light component 14.This luminescence component 12 is installed in an end of this leaded light component 14.This luminescence component 12 is actuated to launch a light to this leaded light component 14.The light that this leaded light component 14 is launched this luminescence component 12 this indication space S 1 that leads.Also there is light source that the design of a light emitting diode all is installed at the two ends of leaded light component.Obvious ground, when the size of this indication space S greatly to a certain degree the time (for example, 23.6 it is very little), then the framework of conventional lighting sources 10 has brightness inadequately (away from luminescence component 12 places, brightness will reduce) and inhomogeneous (to go out optical position brightness higher because of nearly luminescence component 12, and will reduce, and cause the light uniformity coefficient of light source 10 integral body not good away from luminescence component 12 places brightness) situation.Also have and on the longer edges of this indication space S 1, set up two light sources 10, as shown in Figure 1.But the problem that the brightness of above-mentioned light source reaches brightness irregularities does not inadequately achieve a solution yet.
[summary of the invention]
Purpose of the present invention aims to provide a kind of light source that is used in the optical touch control system, to solve the problem that its brightness of conventional lighting sources reaches brightness irregularities inadequately.
According to the light source of first specific embodiment of the present invention, this light source is used in the optical touch control system.This optical touch control system has an indication space (indicating space).Light source according to first specific embodiment of the present invention comprises strip first leaded light component (stripe-like light-guiding device), first luminescence component (light-emitting device) and N second luminescence component, and wherein N is a natural number.This first leaded light component has first end face (facet).This first leaded light component is placed in an edge in this indication space.This first luminescence component is placed in this first end of this first leaded light component.This N second luminescence component is placed in the below or the top of this first leaded light component, and away from this first end face.This first luminescence component and this N second luminescence component is by driven in synchronism, to launch this first leaded light component of first light and directive.This first light is by this first leaded light component guiding and then by this indication space.
As optional technical scheme, this first light is infrared ray, and this first luminescence component and each second luminescence component are all infrared light-emitting diode.
The light source of second specific embodiment of the present invention comprises the assembly according to first specific embodiment of the present invention basically.This first leaded light component and have second end face.Light source according to second specific embodiment of the present invention further comprises one the 3rd luminescence component.The 3rd luminescence component is placed in this second end of this first leaded light component.This N second luminescence component places this first end face of this first leaded light component and the middle place between this second end.This first luminescence component, this N second luminescence component and the 3rd luminescence component are by driven in synchronism, to launch this first leaded light component of this first light and directive.This first light is by this first leaded light component guiding and then by this indication space.
Further, the light source of second specific embodiment of the present invention can comprise strip second leaded light component, the 4th luminescence component, M the 5th luminescence component and the 6th luminescence component, and wherein M is a natural number.This second leaded light component has the 3rd end face and the 4th end face.This first leaded light component is placed in the first long edge in this indication space, and this second leaded light component is placed in the second long edge relative with this first long edge in this indication space.The 4th luminescence component is placed in the 3rd end of this second leaded light component.This M the 5th luminescence component settled the 4th end of close this second leaded light component, and is positioned at the below or the top of this second leaded light component.This M the 5th luminescence component places the 3rd end face of this second leaded light component and the middle place between the 4th end.The 6th luminescence component is placed in the 4th end of this second leaded light component.The 4th luminescence component, this M the 5th luminescence component and the 6th luminescence component are by driven in synchronism, to launch this second leaded light component of second light and directive.This second light is by this second leaded light component guiding and then by this indication space.
Further, the light source of second specific embodiment of the present invention can comprise strip the 3rd leaded light component, and the 3rd leaded light component has a five terminal face, and the 3rd leaded light component is placed in the first short edge adjacent with this first long edge in this indication space; The 7th luminescence component, the 7th luminescence component is placed in the 5th end of the 3rd leaded light component, wherein the 7th luminescence component is actuated to launch one the 3rd light and directive the 3rd leaded light component, and the 3rd light is by the guiding of the 3rd leaded light component and then by this indication space; Strip the 4th leaded light component, the 4th leaded light component has the 6th end face, and the 4th leaded light component is placed in second adjacent with this first long edge and relative with this first minor face edge short edge in this indication space; And, the 8th luminescence component, the 8th luminescence component is placed in the 6th end of the 4th leaded light component, and wherein the 8th luminescence component is actuated to launch the 4th light and directive the 4th leaded light component, and the 4th light is by the guiding of the 4th leaded light component and then by this indication space.
The light source of the 3rd specific embodiment of invention comprises the assembly according to first specific embodiment of the present invention basically.This first leaded light component is placed in the first long edge in this indication space.This first leaded light component and have second end face.This N second luminescence component places this second end of close this first leaded light component, and arranges along first bearing of trend of this first leaded light component.
The light source of the 3rd specific embodiment of the present invention can further comprise strip second leaded light component, the 4th luminescence component and M the 5th luminescence component, and wherein M is a natural number.This second leaded light component has the 3rd end face and the 4th end face.This second leaded light component is placed in the second long edge relative with this first long edge in this indication space.The 4th luminescence component is placed in the 3rd end of this second leaded light component.This M the 5th luminescence component settled the 4th end of close this second leaded light component, and is positioned at the below or the top of this second leaded light component.This M the 5th luminescence component arranged along second bearing of trend of this second leaded light component.The 4th luminescence component and this M the 5th luminescence component is by driven in synchronism, to launch this second leaded light component of second light and directive.This second light is by this second leaded light component guiding and then by this indication space.
The light source of the 3rd specific embodiment of the present invention is strip the 3rd leaded light component further, and the 3rd leaded light component has the five terminal face, and the 3rd leaded light component is placed in this indication space first short edge adjacent with this first long edge; The 7th luminescence component, the 7th luminescence component is placed in the 5th end of the 3rd leaded light component, wherein the 7th luminescence component is actuated to launch the 3rd light and directive the 3rd leaded light component, and the 3rd light is by the guiding of the 3rd leaded light component and then by this indication space; Strip the 4th leaded light component, the 4th leaded light component has the 6th end face, and the 4th leaded light component is placed in second adjacent with this first long edge and relative with this first minor face edge short edge of this indication space; And, the 8th luminescence component, the 8th luminescence component is placed in the 6th end of the 4th leaded light component, and wherein the 8th luminescence component is actuated to launch the 4th light and directive the 4th leaded light component, and the 4th light is by the guiding of the 4th leaded light component and then by this indication space.
Compare with conventional lighting sources, can fully solve the problem that its brightness of conventional lighting sources reaches brightness irregularities inadequately according to light source of the present invention.
[description of drawings]
Fig. 1 is the part assembly synoptic diagram that a traditional optical touch control is united.
Fig. 2 A is according to the synoptic diagram of the light source of first specific embodiment of the present invention and adopt part configuration diagram according to the optical touch control system of light source of the present invention.
Fig. 2 B is that light source among Fig. 2 A is along the viewgraph of cross-section of A-A line.
Fig. 2 C is that light source among Fig. 2 A is along the viewgraph of cross-section of B-B line.
Fig. 3 is the synoptic diagram according to the light source of second specific embodiment of the present invention.
Fig. 4 is the synoptic diagram according to the light source of the 3rd specific embodiment of the present invention.
Fig. 5 measures the result according to its light intensity of light source of the present invention.
Fig. 6 is that its light intensity of a conventional lighting sources measures the result.
[embodiment]
The invention provides a kind of light source that is used in the optical touch control system, reach the low problem of light uniformity coefficient inadequately, can detect tangible shade in order to camera assembly to solve its brightness of conventional lighting sources.Below by detailed description to specific embodiments of the invention, use abundant explanation about feature of the present invention, spirit, advantage and the feasibility of implementing.
See also Fig. 2 A, Fig. 2 B and Fig. 2 C, Fig. 2 A is according to the synoptic diagram of the light source 20 of one first specific embodiment of the present invention and adopt the part configuration diagram of an optical touch control system 2 of this light source 2.Fig. 2 B be among Fig. 2 A this light source 20 along the viewgraph of cross-section of A-A line.Fig. 2 C be among Fig. 2 A this light source 20 along the viewgraph of cross-section of B-B line.Identical with traditional optical touch control system, this optical touch control system 2 is configured on screen, touch-control plotting sheet or the touch control controller.This optical touch control system 2 has an indication space S 2.This indication space S 2 promptly is positioned at the top of screen, touch-control plotting sheet or touch control controller that this optical touch control system 2 disposed.
Shown in Fig. 2 A, this optical touch control system 2 comprises camera assembly 28, the camera assembly 29 of two corner location that are installed in this indication space S 2.Light source 20 according to the present invention is installed on the edge of this indication space S 2.When causing shade when finger or this light source 20 of object or reflecting assembly (not being illustrated among Fig. 2 A), these camera assemblies (28,29) will detect a dark relatively signal (image).
Be shown in Fig. 2 A equally, comprise strip first leaded light component 202, first luminescence component 204 and N second luminescence component 206 according to the light source 20 of first specific embodiment of the present invention, wherein N is a natural number.For example, Fig. 2 A illustrates three second luminescence components 206 example as an illustration.This first leaded light component 202 has the first end face f1.This first leaded light component 202 is placed in an edge of this indication space S 2.This first luminescence component 204 is placed in this first end face f1 place of this first leaded light component 202.This N second luminescence component 206 is placed in the below or the top of this first leaded light component 202, and away from this first end face f1.For example, shown in Fig. 2 B, this N second luminescence component 206 is placed in the below of this first leaded light component 202.Note the non-major limitation of quantity of second luminescence component 206, the deviser can actual demand be mated second luminescence component 206 of right quantity.Generally speaking, brightness and uniformity coefficient that one second luminescence component 206 can promote light source significantly are set, this part is hereinafter confirmed with the measurement of reality.
This first luminescence component 204 and this N second luminescence component 206 is by driven in synchronism, to launch this first leaded light component 202 of first light and directive.This first light is by these first leaded light component, 202 guidings and then by this indication space S 2, shown in Fig. 2 B.By this, this light source 20 can provide high brightness and even brightness light by this indication space S 2, can detect tangible shade in order to these camera assemblies (28,29).
In a specific embodiment, this first light is infrared ray, this first luminescence component 204 and each second luminescence component 206 are all infrared light-emitting diode, and for example, emission wavelength is that infrared transmitter or the emission wavelength of 850nm is the infrared transmitter of 940nm.That is to say that these camera assemblies (28,29) only can be responded to some extent to the infrared spectrum that luminescence component 24 is launched.
In a specific embodiment, shown in Fig. 2 A, this first leaded light component 202 is placed in the e1 place, the first long edge of this indication space S 2.This first leaded light component 202 and have the second end face f2.Shown in Fig. 2 C, this N second luminescence component 206 places this second end face f2 place of close this first leaded light component 202, and arranges along first bearing of trend of this first leaded light component 202.
Be shown in Fig. 2 B and Fig. 2 C equally, the light source 20 according to first specific embodiment of the present invention further comprises reflection subassembly 208.This reflection subassembly 208 is placed in this first leaded light component 202 away from the top surface of this N second luminescence component 206 and away from a side surface of this indication space S 2.This reflection subassembly 208 enters this first leaded light component 202 in order to the part light that reflects this first light, uses the intensity that increases by the light of this indication space S 2.
Be shown in Fig. 2 B and Fig. 2 C equally,, further comprise a supporting member 208 according to the light source 20 of first specific embodiment of the present invention.This first leaded light component 202, this first luminescence component 204 and this N second luminescence component 206 is installed in this supporting member 208.In practical application, this reflecting assembly 208 is same assembly with this supporting member 208, that is to say the function that the part light reflection that this supporting member 208 promptly provides is derived this first leaded light component 202 enters this first leaded light component 202.
See also Fig. 3, Fig. 3 is according to the synoptic diagram of the light source 20 of second specific embodiment of the present invention.Basically comprise assembly according to the light source 20 of second specific embodiment of the present invention according to first specific embodiment of the present invention.Have the assembly with Fig. 2 A duplicate numbers mark among Fig. 3, its function that corresponding assembly had among execution graph 2A is substantially seldom done at this and to be given unnecessary details.In order to explain orally conveniently, Fig. 3 only illustrates the indication space S 2 of optical touch control system, does not show the camera assembly of two corner location that are installed in this indication space S 2.
As shown in Figure 3, this first leaded light component 202 and have the second end face f2.Light source 20 according to second specific embodiment of the present invention further comprises the 3rd luminescence component 207.The 3rd luminescence component 207 is placed in this second end face f2 place of this first leaded light component 202.This N second luminescence component 206 places this first end face f1 of this first leaded light component 202 and the middle place between this second end face f2 place.This first luminescence component 204, this N second luminescence component 206 and the 3rd luminescence component 207 are by driven in synchronism, to launch this first leaded light component 202 of this first light and directive.This first light is by these first leaded light component, 202 guidings and then by this indication space S 2.
Be shown in Fig. 3 equally, further, according to the light source 20 of second specific embodiment of the present invention and comprise strip second leaded light component 222, the 4th luminescence component 224, M the 5th luminescence component 226 and the 6th luminescence component 227, wherein M is a natural number.This second leaded light component 222 has the 3rd end face f3 and the 4th end face f4.This second leaded light component 222 is placed in the second long edge e2 place relative with this first long edge e1 of this indication space S 2.The 4th luminescence component 224 is placed in the 3rd end face f3 place of this second leaded light component 222.This M the 5th luminescence component 226 settled the 4th end face f4 place of close this second leaded light component 222, and is positioned at the below or the top of this second leaded light component 222.This M the 5th luminescence component 226 places the 3rd end face f3 of this second leaded light component 222 and the middle place between the 4th end face f4 place.The 6th luminescence component 227 is placed in the 4th end face f4 place of this second leaded light component 222.The 4th luminescence component 224, this M the 5th luminescence component 226 and the 6th luminescence component 227 are by driven in synchronism, to launch this second leaded light component 222 of second light and directive.This second light is by these second leaded light component, 222 guidings and then by this indication space S 2.
Please consult Fig. 3 again, further, according to the light source 20 of second specific embodiment of the present invention and comprise strip the 3rd leaded light component 242, the 7th luminescence component 244, strip the 4th leaded light component 262 and the 8th luminescence component 264.The 3rd leaded light component 242 has five terminal face f5.The 3rd leaded light component 242 is placed in the first minor face edge e3 place adjacent with this first long edge e1 of this indication space S 2.The 7th luminescence component 244 is placed in this five terminal face f5 place of the 3rd leaded light component 242.The 7th luminescence component 244 is driven, to launch the 3rd light and directive the 3rd leaded light component 242.The 3rd light is by 242 guidings of the 3rd leaded light component and then by this indication space S 2.
Be shown in Fig. 3 equally, the 4th leaded light component 262 has one the 6th end face f6.The 4th leaded light component 262 is placed in second adjacent with this first long edge e1 and relative with this first minor face edge e3 minor face edge e4 place of this indication space S 2.The 8th luminescence component 264 is placed in the 6th end face f6 place of the 4th leaded light component 262.The 8th luminescence component 264 is driven, to launch the 4th light and directive the 4th leaded light component 262.The 4th light is by 262 guidings of the 4th leaded light component and then by this indication space S 2.
See also Fig. 4, Fig. 4 is the synoptic diagram according to the light source 20 of the 3rd specific embodiment of the present invention.Basically comprise assembly according to the light source 20 of the 3rd specific embodiment of the present invention according to first specific embodiment of the present invention.Have the assembly with Fig. 2 A duplicate numbers mark among Fig. 4, its function that corresponding assembly had among execution graph 2A is substantially seldom done at this and to be given unnecessary details.In order to explain orally conveniently, Fig. 4 only illustrates the indication space S 2 of optical touch control system, does not show the camera assembly of two corner location that are installed in this indication space S 2.
As shown in Figure 4, this first leaded light component 202 is placed in the e1 place, the first long edge of this indication space S 2.This first leaded light component 202 and have the second end face f2.This N second luminescence component 206 places this second end face f2 place of close this first leaded light component 202, and arranges along first bearing of trend of this first leaded light component 202.
Be shown in Fig. 4 equally, further comprise strip second leaded light component 222, the 4th luminescence component 224 and M the 5th luminescence component 226 according to the light source 20 of the 3rd specific embodiment of the present invention, wherein M is a natural number.This second leaded light component 224 has one the 3rd end face f3 and one the 4th end face f4.This second leaded light component 222 is placed in the second long edge e2 place relative with this first long edge e1 of this indication space S 2.The 4th luminescence component 224 is placed in the 3rd end face f3 place of this second leaded light component 222.This M the 5th luminescence component 226 settled the 4th end face f4 place of close this second leaded light component 222, and is positioned at the below or the top of this second leaded light component 222.
This M the 5th luminescence component 226 arranged along second bearing of trend of this second leaded light component 222.The 4th luminescence component 224 and this M the 5th luminescence component 226 is by driven in synchronism, to launch this second leaded light component 222 of second light and directive.This second light is by these second leaded light component, 222 guidings and then by this indication space S 2.
Please consult Fig. 4 again, further, according to the light source 20 of the 3rd specific embodiment of the present invention and comprise strip the 3rd leaded light component 242, the 7th luminescence component 244, strip the 4th leaded light component 262 and the 8th luminescence component 264.The 3rd leaded light component 242 has five terminal face f5.The 3rd leaded light component 244 is placed in the first minor face edge e3 place adjacent with this first long edge e1 of this indication space S 2.The 7th luminescence component 244 is placed in this five terminal face f5 place of the 3rd leaded light component 242.The 7th luminescence component 244 is driven, to launch the 3rd light and directive the 3rd leaded light component 242.The 3rd light is by 242 guidings of the 3rd leaded light component and then by this indication space S 2.
Be shown in Fig. 4 equally, the 4th leaded light component 252 has the 6th end face f6.The 4th leaded light component 262 is placed in second adjacent with this first long edge e1 and relative with this first minor face edge e3 minor face edge e4 place of this indication space S 2.The 8th luminescence component 264 is placed in the 6th end face f6 place of the 4th leaded light component 262.The 8th luminescence component 264 is driven, to launch the 4th light and directive the 4th leaded light component 262.The 4th light is by 262 guidings of the 4th leaded light component and then by this indication space S 2.
Compare with conventional lighting sources, can fully solve the problem that its brightness of conventional lighting sources reaches brightness irregularities inadequately according to light source of the present invention.Be configured in and adopt the light source (at first leaded light component near second end only settle one second luminescence component) of framework shown in Fig. 2 A on 16.8 cun its longer edges of the optical touch control system on the screen, and to utilize resolution be that 16 camera assembly measures along the light intensity of the length of leaded light component, and its measurement is asked for an interview Fig. 5.Be configured in and adopt framework conventional lighting sources as shown in Figure 1 on 16.8 cun its longer edges of the optical touch control system on the screen, and to utilize resolution be that 16 camera assembly measures along the light intensity of the length of leaded light component, its measurement is asked for an interview Fig. 6, for contrast.Can further calculate its uniformity coefficient of this conventional lighting sources from measurement shown in Figure 6 and only be about 0.3.Can further calculate this its improving uniformity to 0.5 of conventional lighting sources from measurement shown in Figure 5.Significantly, want high according to the uniformity coefficient of the existing light source of its uniformity coefficient of light source of the present invention.And Fig. 5 measures the light source that is adopted can increase the quantity of second luminescence component at its first leaded light component near second end, and adjusts the position of second luminescence component, can promote brightness and uniformity coefficient according to light source of the present invention more.
By above detailed description of the present invention, can be well understood to the light that high brightness and light uniformity coefficient can be provided according to light source of the present invention, can detect tangible shade in order to the camera assembly of optical touch control system.
Though the present invention discloses as above with embodiment, so it is not that protection scope of the present invention is when being as the criterion with claims in order to qualification the present invention.

Claims (10)

1. light source, this light source is used in the optical touch control system, and this optical touch control system has an indication space, it is characterized in that this light source comprises:
Strip first leaded light component, this first leaded light component has first end face, and this first leaded light component is placed in an edge in this indication space;
First luminescence component, this first luminescence component are placed in this first end of this first leaded light component; And N second luminescence component, N is a natural number, this N second luminescence component is placed in the below of this first leaded light component or top and away from this first end face, wherein to launch this first leaded light component of first light and directive, this first light is by this first leaded light component guiding and then by this indication space by driven in synchronism for individual second luminescence component of this first luminescence component and this N.
2. light source as claimed in claim 1 is characterized in that this first leaded light component and has second end face, and this light source further comprises:
The 3rd luminescence component, the 3rd luminescence component is placed in this second end of this first leaded light component, this N second luminescence component places this first end face of this first leaded light component and the middle place between this second end, wherein to launch this first leaded light component of this first light and directive, this first light is by this first leaded light component guiding and then by this indication space by driven in synchronism for this first luminescence component, this N second luminescence component and the 3rd luminescence component.
3. light source as claimed in claim 2 is characterized in that further comprising:
Strip second leaded light component, this second leaded light component have one the 3rd end face and one the 4th end face; This first leaded light component is placed in the first long edge in this indication space; This second leaded light component is placed in this indication space second long edge relative with this first long edge;
The 4th luminescence component, the 4th luminescence component are placed in the 3rd end of this second leaded light component;
M the 5th luminescence component, M is a natural number, individual the 5th luminescence component of this M is settled the 4th end of close this second leaded light component and is positioned at the below or the top of this second leaded light component, and this M the 5th luminescence component places the 3rd end face of this second leaded light component and middle the locating between the 4th end; And
The 6th luminescence component, the 6th luminescence component is placed in the 4th end of this second leaded light component, wherein to launch this second leaded light component of second light and directive, this second light is by this second leaded light component guiding and then by this indication space by driven in synchronism for the 4th luminescence component, this M the 5th luminescence component and the 6th luminescence component.
4. light source as claimed in claim 3 is characterized in that further comprising:
Strip the 3rd leaded light component, the 3rd leaded light component has a five terminal face, and the 3rd leaded light component is placed in the first short edge adjacent with this first long edge in this indication space;
The 7th luminescence component, the 7th luminescence component is placed in the 5th end of the 3rd leaded light component, wherein the 7th luminescence component is actuated to launch the 3rd light and directive the 3rd leaded light component, and the 3rd light is by the guiding of the 3rd leaded light component and then by this indication space;
Strip the 4th leaded light component, the 4th leaded light component has the 6th end face, and the 4th leaded light component is placed in second adjacent with this first long edge and relative with this first minor face edge short edge in this indication space; And
The 8th luminescence component, the 8th luminescence component is placed in the 6th end of the 4th leaded light component, wherein the 8th luminescence component is actuated to launch the 4th light and directive the 4th leaded light component, and the 4th light is by the guiding of the 4th leaded light component and then by this indication space.
5. light source as claimed in claim 1, it is characterized in that this first leaded light component is placed in the first long edge in this indication space, this first leaded light component and have second end face, this N second luminescence component places this second end of close this first leaded light component, and arranges along first bearing of trend of this first leaded light component.
6. light source as claimed in claim 5 is characterized in that further comprising:
Strip second leaded light component, this second leaded light component has the 3rd end face and the 4th end face, and this second leaded light component is placed in the second long edge relative with this first long edge in this indication space;
The 4th luminescence component, the 4th luminescence component are placed in the 3rd end of this second leaded light component; And M the 5th luminescence component, M is a natural number, individual the 5th luminescence component of this M is settled the 4th end of close this second leaded light component and is positioned at the below or the top of this second leaded light component, this M the 5th luminescence component arranged along second bearing of trend of this second leaded light component, wherein to launch this second leaded light component of second light and directive, this second light is by this second leaded light component guiding and then by this indication space by driven in synchronism for individual the 5th luminescence component of the 4th luminescence component and this M.
7. light source as claimed in claim 6 is characterized in that further comprising:
Strip the 3rd leaded light component, the 3rd leaded light component has the five terminal face, and the 3rd leaded light component is placed in this indication space first short edge adjacent with this first long edge;
The 7th luminescence component, the 7th luminescence component is placed in the 5th end of the 3rd leaded light component, wherein the 7th luminescence component is actuated to launch the 3rd light and directive the 3rd leaded light component, and the 3rd light is by the guiding of the 3rd leaded light component and then by this indication space;
Strip the 4th leaded light component, the 4th leaded light component has the 6th end face, and the 4th leaded light component is placed in second adjacent with this first long edge and relative with this first minor face edge short edge of this indication space; And the 8th luminescence component, the 8th luminescence component is placed in the 6th end of the 4th leaded light component, wherein the 8th luminescence component is actuated to launch the 4th light and directive the 4th leaded light component, and the 4th light is by the guiding of the 4th leaded light component and then by this indication space.
8. light source as claimed in claim 1 is characterized in that this first light is infrared ray, and this first luminescence component and each second luminescence component are all infrared light-emitting diode.
9. light source as claimed in claim 1, it is characterized in that further comprising reflection subassembly, this reflection subassembly is placed in this first leaded light component away from the top surface of this N second luminescence component and away from the side surface in this indication space, and this reflection subassembly enters this first leaded light component in order to the part light that reflects this first light.
10. light source as claimed in claim 9 is characterized in that further comprising supporting member, and this first leaded light component, this first luminescence component and this N second luminescence component is installed in this supporting member.
CN2011100603096A 2011-03-14 2011-03-14 Light source used in optical touch system Pending CN102270065A (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101441541A (en) * 2007-11-19 2009-05-27 乐金显示有限公司 Multi touch flat display module
CN101661691A (en) * 2009-08-24 2010-03-03 友达光电股份有限公司 Low-electromagnetic touch-control induction interference backlight module and display device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101441541A (en) * 2007-11-19 2009-05-27 乐金显示有限公司 Multi touch flat display module
CN101661691A (en) * 2009-08-24 2010-03-03 友达光电股份有限公司 Low-electromagnetic touch-control induction interference backlight module and display device

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Application publication date: 20111207