CN103186294A - Line source module and optical touch control device with same - Google Patents
Line source module and optical touch control device with same Download PDFInfo
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- CN103186294A CN103186294A CN2013100161973A CN201310016197A CN103186294A CN 103186294 A CN103186294 A CN 103186294A CN 2013100161973 A CN2013100161973 A CN 2013100161973A CN 201310016197 A CN201310016197 A CN 201310016197A CN 103186294 A CN103186294 A CN 103186294A
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Abstract
The invention provides relates to a line source module. The line source module comprises a mirror light-guiding element and a light-emitting element, wherein the mirror light-guiding element is provided with a light exit end, a surface opposite to the light outgoing end and a light incoming end between the light outgoing end and the surface; the surface is provided with a mirror reflective material layer; the light-emitting element is used for supplying light to the light incoming end of the mirror light-guiding element. When the light-emitting element is turned on, the mirror light-guiding element is a light-guiding bar and used for converting light supplied by the light-emitting element into a line source outgoing from the light outgoing end; and when the light-emitting element is turned off, the mirror light-guiding element is a strip-shaped mirror and used for providing a mirror function. The invention further relates to an optical touch control device with the line source module, which can avoid the problem of dead zones and has the advantage of multi-point positioning.
Description
The present invention is the dividing an application of Chinese patent application CN200910179865.8 of on October 15th, 2009 application.
Technical field
The present invention relates to a kind of contactor control device, the optical touch control apparatus that particularly relates to a kind of line source module and have this line source module.
Background technology
Touch controllable function has become one of function of many electronic installation indispensabilities now, and contactor control device is and realizes the required common electronics element of touch controllable function.At present the kind of contactor control device mainly comprises resistance-type, condenser type, optical profile type etc., and electronic installation can be according to different touch-control demands different types of contactor control device of arranging in pairs or groups.
See also shown in Figure 1ly, Fig. 1 is the structural representation of existing known a kind of optical touch-control device.Existing known optical touch-control device 100 comprises a leaded light group 110, a light-emitting component 120 and an image detecting module 130.Wherein, leaded light group 110 comprises two leaded light bar 112a, 112b and a stripe mirror (mirror) 114.Leaded light bar 112a, 112b and stripe mirror 114 are arranged along three limits of a rectangular path, wherein leaded light bar 112a is relative with stripe mirror 114, and leaded light bar 112b is connected between leaded light bar 112a and the stripe mirror 114, and the zone in the above-mentioned rectangular path is a sensing area 116.In addition, light-emitting component 120 is arranged between leaded light bar 112a and the leaded light bar 112b adjacent both ends, and in order to provide light to leaded light bar 112a and leaded light bar 112b.Leaded light bar 112a, 112b convert linear light sorurce in order to the light that light source is provided, to shine whole sensing area 116 by linear light sorurce.In addition, image detecting module 130 is arranged at by the leaded light bar 112a, and (Field of View FOV) is contained whole sensing area 116 in the visual field of image detecting module 130.
Hold above-mentionedly, image detecting module 130 is used in the detecting sensing area 116 whether shade being arranged, and calculates the position of shade.In more detail, the touch point in the sensing area 116 (being shade) A produces a mirror point A1 via stripe mirror 114, and image detecting module 130 can detect dim spot A2, A3.So, can be calculated apart from d1, d2, and cooperate other known parameters can calculate the position (coordinate) of touch point A.The parameter that above-mentioned other are known comprises that the width of sensing area 116 in the length of X-axis, sensing area 116 in Y-axis, touch point A to the bee-line of stripe mirror 114 equals mirror point A1 to bee-line of stripe mirror 114 etc.Be common knowledge in the affiliated technical field relevant for detailed coordinate Calculation method, will do not describe in detail at this.
But there is certain blind area 150 (Blind Zone) in existing known optical touch-control device 100.The meaning of blind area 150 is the zones that can't accurately calculate touch point coordinate.For instance, the touch point B in the sensing area 116 just is positioned at blind area 150, and dim spot B2, B3 that this moment, image detecting device 130 detected can overlap, and so can't accurately calculate the coordinate of touch point B.
See also shown in Figure 2ly, Fig. 2 is the structural representation of existing known another kind of optical touch-control device.Existing known optical touch-control device 100a is that with the difference that has known optical touch-control device 100 now leaded light group 110a comprises two leaded light bar 112a, 112b and two stripe mirror 114a, 114b.Leaded light bar 112a, the adjacent setting of 112b, and also adjacent setting of stripe mirror 114a, 114b, and leaded light bar 112a, 112b and stripe mirror 114a, 114b arrange along four limits of a rectangular path, and the zone in the rectangular path is a sensing area 116.
Compared to existing known optical touch-control device 100, significantly reduce though have the area of the blind area 150a of known optical touch-control device 100a now, the problem of blind area still exists.In addition, comprise two stripe mirror 114a, 114b owing to have the light guide module 110a of known optical touch-control device 100a now, make each touch point that is positioned at sensing area 116 can correspondingly produce three mirror images, cause image detecting module 130 to detect more dim spot, so will improve the complexity of the coordinate that calculates touch point.
In addition, when two touch points appear in sensing area 116 simultaneously, can correspondingly produce six mirror images, this will significantly increase the complexity of the coordinate that calculates this two touch point, therefore have known optical touch-control device 100a now and be unfavorable for realizing two point touch-control (dual-touch) or multi-point touch (multi-touch).
This shows that above-mentioned existing optical touch control apparatus obviously still has inconvenience and defective, and demands urgently further being improved in structure and use.In order to solve the problem of above-mentioned existence, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product does not have appropriate structure to address the above problem, this obviously is the problem that the anxious desire of relevant dealer solves.Therefore how to found a kind of novel optical touch control apparatus and localization method and the line source module of optical touch control apparatus thereof, real one of the current important research and development problem that belongs to, also becoming the current industry utmost point needs improved target.
Summary of the invention
Fundamental purpose of the present invention is, overcomes the defective that existing optical touch control apparatus exists, and a kind of novel line source module is provided, and technical matters to be solved is that line source and mirror face function can be provided, and is very suitable for practicality.
Another object of the present invention is to, a kind of novel optical touch control apparatus is provided, technical matters to be solved is to make it avoid the problem of blind area, is very suitable for practicality.
The object of the invention to solve the technical problems realizes by the following technical solutions.A kind of line source module according to the present invention's proposition, it comprises: a minute surface light-guide device, have a light exit side, one and the light incident side of this light exit side facing surfaces and between this light exit side and this surface, and this surface is provided with a minute surface reflective material layer; An and light-emitting component, in order to light this light incident side to this minute surface light-guide device to be provided, wherein, when opening this light-emitting component, this minute surface light-guide device is the leaded light bar, converts a line source from this light exit side outgoing in order to the light that this light-emitting component is provided, and when closing this light-emitting component, this minute surface light-guide device is stripe mirror, in order to mirror face function to be provided.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid minute surface light-guide device is solid cylinder or hollow cylinder.
Aforesaid minute surface light-guide device is semicylinder, and this light exit side of this minute surface light-guide device is one to be connected in this surperficial curved surface.
Aforesaid minute surface light-guide device is hollow form, and this light incident side of this minute surface light-guide device and this light exit side are respectively an opening or a photic zone.
This surface of aforesaid minute surface light-guide device is curved surface or plane.
The object of the invention to solve the technical problems also realizes by the following technical solutions.A kind of optical touch control apparatus according to the present invention proposes has a sensing region, and it comprises a line source module.This line source module comprises: a minute surface light-guide device, has a light exit side, one and the light incident side of this light exit side facing surfaces and between this light exit side and this surface, this light exit side is in the face of this sensing region, and this surface is provided with a minute surface reflective material layer; And a light-emitting component, in order to light this light incident side to this minute surface light-guide device to be provided.Wherein, when opening this light-emitting component, this minute surface light-guide device is the leaded light bar, convert a line source from this light exit side outgoing in order to the light that this light-emitting component is provided, and when closing this light-emitting component, this minute surface light-guide device is stripe mirror, in order to mirror face function to be provided.
The present invention compared with prior art has tangible advantage and beneficial effect.By technique scheme, line source module of the present invention and the optical touch control apparatus with this line source module have following advantage and beneficial effect at least: line source module of the present invention is except can be in order to provide the line source, because the surface of minute surface light-guide device is provided with the minute surface reflective material layer, so when light-emitting component was closed, the minute surface light-guide device can provide mirror face function.Therefore, the optical touch control apparatus with this line source module can detect effective optical information, thereby effectively avoids the problem of blind area.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of instructions, and for above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.
Description of drawings
Fig. 1 illustrates to having the structural representation of known a kind of optical touch-control device now.
Fig. 2 illustrates to having the structural representation of known another kind of optical touch-control device now.
Fig. 3 illustrates the structural representation into the optical touch control apparatus of first embodiment of the invention.
Fig. 4 illustrates the structural representation into the leaded light bar of one embodiment of the invention.
Fig. 5 illustrates the structural representation into the minute surface light-guide device of one embodiment of the invention.
Fig. 6 illustrates the structural representation into the minute surface light-guide device of another embodiment of the present invention.
Fig. 7 illustrates the structural representation into the minute surface light-guide device of another embodiment of the present invention.
Fig. 8 illustrates the synoptic diagram of optical touch control apparatus when first light-emitting component unlatching, second light-emitting component is closed for first embodiment of the invention.
Fig. 9 illustrates the synoptic diagram of optical touch control apparatus when first light-emitting component is closed the unlatching of second light-emitting component for first embodiment of the invention.
Synoptic diagram when Figure 10 illustrates optical touch control apparatus for first embodiment of the invention and is applied to two point touch-control field and first light-emitting component and opens second light-emitting component and close.
Figure 11 illustrates optical touch control apparatus for first embodiment of the invention and is applied to two point touch-control field and first light-emitting component and closes the synoptic diagram of second light-emitting component when opening.
Figure 12 illustrates the structural representation into the optical touch control apparatus of second embodiment of the invention.
100,100a: existing known optical touch control apparatus
110,110a: leaded light group 112a, 112b: leaded light bar
114,114a, 114b: stripe mirror 116: sensing area
120: light-emitting component 130: the image detecting module
150,150a: blind area 200,200a: optical touch control apparatus
210: 212: the first light-guide devices of light guide module
216: the three light-guide devices of 214: the second light-guide devices
218: the four light-guide devices 219: sensing region
220: 222: the first light-emitting components of light source module
226: the three light-emitting components of 224: the second light-emitting components
230: image detecting module 300: the leaded light bar
311: first surface 312: light reflection surface
313: light entrance face 400,400a, 400b: the minute surface light-guide device
411: light exit side 412: second surface
401,402,403,404: dull and stereotyped 405,406: photic zone
413: light incident side
511: reflecting surface
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, the optical touch control apparatus that foundation the present invention is proposed and localization method and its embodiment of line source module, structure, feature and the effect thereof of optical touch control apparatus thereof, describe in detail as after.
Relevant aforementioned and other technology contents, characteristics and effect of the present invention can be known to present in the following detailed description that cooperates with reference to graphic preferred embodiment.By the explanation of embodiment, when can being to reach technological means and the effect that predetermined purpose takes to get one more deeply and concrete understanding to the present invention, yet appended graphic only provide with reference to the usefulness of explanation, the present invention is limited.
See also shown in Figure 3ly, Fig. 3 illustrates the structural representation into the optical touch control apparatus of first embodiment of the invention.The optical touch control apparatus 200 of present embodiment comprises a light guide module 210, a light source module 220 and an image detecting module 230.Light guide module 210 comprises one first light-guide device 212, one second light-guide device 214, one the 3rd light-guide device 216 and one the 4th light-guide device of arranging along four limits of a rectangular path 218.Form a sensing region 219 between first light-guide device 212, second light-guide device 214, the 3rd light-guide device 216 and the 4th light-guide device 218.First light-guide device 212 is relative with the 3rd light-guide device 216, and second light-guide device 214 is relative with the 4th light-guide device 218.Light source module 220 is in order to providing light to the three light-guide devices 216 and the 4th light-guide device 218, and whole sensing region 219, the 3rd light-guide device 216 and the 4th light-guide device 218 are contained in the visual field of image detecting module 230.
In the present embodiment, first light-guide device 212 and second light-guide device 214 for example are respectively leaded light bar 300 shown in Figure 4.Leaded light bar 300 has a first surface 311 respectively, a light reflection surface 312 and relative with first surface 311 is connected in the light entrance face 313 between first surface 311 and the light reflection surface 312.First surface 311 is a light-emitting face.The light that light source module 220 sends enters leaded light bar 300 via light entrance face 313, and is penetrated by first surface 311 (light-emitting face) via light reflection surface 312 reflection backs.Please arrange in pairs or groups and consult Fig. 3, in the embodiment that adopts leaded light bar 300 as first light-guide device 212 and second light-guide device 214, the first surface 311 of first light-guide device 212 and second light-guide device 214 is faced sensing region 219.Light source module 220 is suitable for providing the light entrance face 313 of light to the first light-guide device 212 and second light-guide device 214, the light reflection surface 312 of first light-guide device 212 and second light-guide device 214 is suitable for light is reflexed to first surface 311, and is penetrated to sensing region 219 by first surface 311.
The 3rd light-guide device 216 and the 4th light-guide device 218 for example are respectively minute surface light-guide device 400 shown in Figure 5.Minute surface light-guide device 400 has a light exit side 411, one and the light incident side 413 of light exit side 411 opposing second surface 412 and between light exit side 411 and second surface 412, and second surface 412 is provided with a minute surface reflective material layer.As light during from light incident side 413 incident minute surface light-guide devices 400, the minute surface reflective material layer of being located at second surface 412 can reflection ray, and light is penetrated by light exit side 411.When not having light from light incident side 413 incident minute surface light-guide devices 400, the minute surface reflective material layer of being located at second surface 412 can provide mirror face function.
In the present embodiment, minute surface light-guide device 400 for example is the semicircle solid cylinder.The light exit side 411 of minute surface light-guide device 400 is one to be connected in the curved surface of second surface 412, and second surface 412 for example is a plane.Certainly, minute surface light-guide device 400 also can be the semicircle hollow cylinder.In addition, the shape of minute surface light-guide device 400 is not limited with above-mentioned semicylinder, and it can be the solid or hollow cylinder of other suitable shapes, and second surface 412 visual demands and be designed to curved surface.Please arrange in pairs or groups and consult Fig. 3, be among the embodiment of minute surface light-guide device 400 at the 3rd light-guide device 216 and the 4th light-guide device 218, the light exit side 411 of the 3rd light-guide device 216 and the 4th light-guide device 218 is in the face of sensing region 219, and light source module 220 is suitable for providing the light incident side 413 of light to the three light-guide devices 216 and the 4th light-guide device 218.
See also shown in Figure 6ly, Fig. 6 illustrates the structural representation into the minute surface light-guide device of another embodiment of the present invention.The functional similarity of minute surface light-guide device 400a and above-mentioned minute surface light-guide device 400, difference is in shape.Particularly, the minute surface light-guide device 400a of present embodiment is hollow form, and minute surface light-guide device 400a is surrounded by dull and stereotyped 401,402,403,404 connections and forms, and the light incident side 413 of minute surface light-guide device 400a is respectively an opening with light exit side 411.Second surface 412 is relative with light exit side 411, and second surface 412 is provided with a minute surface reflective material layer.Please arrange in pairs or groups and consult Fig. 3, in adopting the embodiment of leaded light bar 400a as the 3rd light-guide device 216 and the 4th light-guide device 218, light exit side 411 is in the face of sensing region 219.Light source module 220 is suitable for providing the light incident side 413 of light to the three light-guide devices 216 and the 4th light-guide device 218.
See also shown in Figure 7ly, Fig. 7 illustrates the structural representation into the minute surface light-guide device of another embodiment of the present invention.Minute surface light-guide device 400b is similar to above-mentioned minute surface light-guide device 400a, and difference is in light incident side 413 and light exit side 411 and is respectively a photic zone.Particularly, the minute surface light-guide device 400b of present embodiment is hollow form, minute surface light-guide device 400a by dull and stereotyped 401,402,403,404 and photic zone 405,406 connect to surround and form, the light incident side 413 of minute surface light-guide device 400a is photic zone 405, and light exit side 411 is photic zone 406.So, please arrange in pairs or groups and consult Fig. 3, in adopting the embodiment of leaded light bar 400b as the 3rd light-guide device 216 and the 4th light-guide device 218, light exit side 411 is in the face of sensing region 219.Light source module 220 is suitable for providing the light incident side 413 of light to the three light-guide devices 216 and the 4th light-guide device 218.Photic zone 405,406 is suitable for making light source module 220 light that provides to enter light incident side 413 smoothly and penetrates to sensing region 219 from light exit side 411.Photic zone 405,406 material can be light transmissive materials such as plastic film or glass.
Please consult shown in Figure 3ly again, light source module 220 for example comprises one first light-emitting component 222 and one second light-emitting component 224.In the present embodiment, first light-emitting component 222 for example is to be arranged between second light-guide device 214 and the 3rd light-guide device 216 adjacent both ends.First light-emitting component 222 and the 3rd light-guide device 216 can constitute so-called line source module, and second light-emitting component 224 and the 4th light-guide device 218 can constitute another line source module.First light-emitting component 222 is in order to providing the light incident side 413 of light to the three light-guide devices 216, and the light entrance face 313 in order to light to the second light-guide device 214 to be provided.Second light-emitting component 224 is arranged between the 4th light-guide device 218 and first light-guide device, 212 adjacent both ends.Second light-emitting component 224 is in order to providing the light incident side 413 of light to the four light-guide devices 218, and the light entrance face 313 in order to light to the first light-guide device 212 to be provided.In other embodiments, can provide light to the first light-guide device 212 and second light-guide device 214 by other light-emitting components, but not provide light to the first light-guide device 212 and second light-guide device 214 by first light-emitting component 222 and second light-emitting component 224.
Above-mentioned first light-emitting component 222 and second light-emitting component 224 are suitable for alternately luminous.When first light-emitting component 222 is opened, and second light-emitting component 224 is when closing, and first light-emitting component 222 provides light to the three light-guide devices 216, and the 3rd light-guide device 216 converts light to the linear light sorurce that is passed to sensing region 219.Simultaneously, because second light-emitting component 224 is closed, so the 4th light-guide device 218 is in order to provide mirror face function.Otherwise when first light-emitting component 222 is closed, and second light-emitting component 224 is when opening, and second light-emitting component 224 provides light to the four light-guide devices 218, and the 4th light-guide device 218 converts light to the linear light sorurce that is passed to sensing region 219.Simultaneously, because first light-emitting component 222 is closed, so the 3rd light-guide device 216 is in order to provide mirror face function.
Above-mentioned image detecting module 230 is arranged between first light-guide device 212 and second light-guide device, 214 adjacent both ends.Sensing region 219, the 3rd light-guide device 216 and the 4th light-guide device 218 are contained in the visual field of image detecting module 230.Therefore, image detecting module 230 can effectively detect in the sensing region 219 shade and via the optical information of the 3rd light-guide device 216 or the 218 formed shade virtual images of the 4th light-guide device, with the position (coordinate) of the shade in the accurate location sensing region 219.
In addition, above-mentioned optical touch control apparatus 200 more can comprise a substrate (not shown), and light guide module 210 can be arranged on the substrate with light source module 220.
Hereinafter specific descriptions are applicable to the localization method of the optical touch control apparatus of above-mentioned optical touch control apparatus 200.
The localization method that is applicable to the optical touch control apparatus of above-mentioned optical touch control apparatus 200 may further comprise the steps:
First light-emitting component 222 and second light-emitting component 224 of control optical touch control apparatus 200 are alternately luminous.Open and second light-emitting component 224 when closing when first light-emitting component 222, the image detecting module is detectd 230 and is measured one first optical information.Close and second light-emitting component 224 when opening when first light-emitting component 222, image detecting module 230 detects one second optical information; And
First optical information that detects according to image detecting module 230 and second optical information are judged the position of the shade that is positioned at sensing region 219.
Particularly, see also shown in Figure 8, when first light-emitting component 222 is opened and second light-emitting component 224 when closing, the 4th light-guide device 218 provides mirror face function, will form a virtual image C1 so be positioned at the shade C of sensing region 219, and image detecting module 230 can detect first optical information (as dim spot C2, C3) about shade C and virtual image C1.So, can be calculated apart from d3, d4, and cooperate other known parameters can calculate the position (coordinate) of shade C.The parameter that above-mentioned other are known comprises that sensing area 219 equals bee-line of virtual image C1 to the four light-guide devices 218 etc. in length, the sensing area 219 of X-axis in the width of Y-axis, the bee-line of shade C to the four light-guide devices 218.Be common knowledge in the affiliated technical field relevant for detailed coordinate Calculation method, will do not describe in detail at this.
In addition, see also shown in Figure 9, when first light-emitting component 222 is closed and second light-emitting component 224 when opening, the 3rd light-guide device 216 provides mirror face function, will form a virtual image C4 so be positioned at the shade C of sensing region 219, and the image detecting module is detectd 230 second optical informations (as dim spot C5, C6) that can detect about shade C and virtual image C4.So, can be calculated apart from d5, d6, and cooperate other known parameters can calculate the position (coordinate) of shade C.
Then, first optical information that detects according to image detecting module 230 and second optical information position that can judge the shade C that is positioned at sensing region 219.Generally speaking, can be calculated the tram (coordinate) of shade C respectively by first optical information and second optical information.
Yet, as previously mentioned, when optical touch control apparatus only has a mirror assembly, can have the blind area.In the optical touch control apparatus 200 of present embodiment, open and second light-emitting component 224 when closing when first light-emitting component 222, if the shade of sensing region 219 just in time is positioned at the blind area, possibly can't obtain the effectively first available optical information.But, when first light-emitting component 222 is closed and second light-emitting component 224 when opening, the shade of sensing region 219 will can not be positioned at the blind area, thereby can obtain the effectively second available optical information, therefore can be calculated the tram (coordinate) of the shade in the sensing region 219 by second optical information.Vice versa.In other words, the blind area that is different from the optical touch control apparatus 200 under Fig. 9 state in the blind area of the optical touch control apparatus 200 under Fig. 8 state, when first optical information and second optical information one of them when invalid, can calculate the tram of shade by another optical information.Therefore, the optical touch control apparatus 200 of present embodiment and localization method thereof can effectively solve the problem of blind area.
What deserves to be mentioned is that the optical touch control apparatus 200 of present embodiment and localization method thereof are conducive to be applied in two point touch-control field or multi-point touch field.To be that example describes with the two point touch-control hereinafter.
Localization method when the localization method when optical touch control apparatus 200 is applied to the two point touch-control and aforementioned applications single-point touch is similar, below only the situation when ghost occurring describe.Synoptic diagram when Figure 10 and 11 illustrates respectively and is applied to the two point touch-control for above-mentioned optical touch control apparatus 200.
Please consult shown in Figure 10 earlier, when first light-emitting component 222 is opened and second light-emitting component 224 when closing, the 4th light-guide device 218 provides mirror face function, will form virtual image E1, F1 so be positioned at shade E, the F of sensing region 219, and the image detecting module is detectd 230 first optical informations (as dim spot M1, E2, F2) that can detect about shade E, F and virtual image E1, E2.Because dim spot M1 is by 2 overlapping forming, so can be calculated the position of three shade E, F, G1 by first optical information, wherein shade G1 is so-called ghost (ghost image), and it is not necessary being, so fashion can't be determined the tram of shade E, F.
See also shown in Figure 11, when first light-emitting component 222 is closed and second light-emitting component 224 when opening, the 3rd light-guide device 218 provides mirror face function, will form virtual image E3, F3 so be positioned at shade E, the F of sensing region 219, and the image detecting module is detectd 230 first optical informations (as dim spot M2, E4, F4) that can detect about shade E, F and virtual image E3, E3.Because dim spot M2 is by 2 overlapping forming, so can calculate the position of three shade E, F, G2 by second optical information, wherein shade G2 is so-called ghost, and it is not necessary being.Because the possible position that the possible position that first optical information is calculated and second optical information are calculated all comprises the position of shade E, F, therefore can get rid of the position of shade G1, G2, and then the tram of definite shade E, F.
Because adopting, the optical touch control apparatus 200 of present embodiment and localization method thereof make first light-emitting component 222 and second light-emitting component 224 replace luminous design, to obtain first optical information and second optical information.Because the method for the tram that calculates shade by first optical information and second optical information is comparatively simple, so the optical touch control apparatus 200 of present embodiment and localization method thereof are conducive to be applied in two point touch-control field or multi-point touch field.
See also shown in Figure 12ly, Figure 12 illustrates the structural representation into the optical touch control apparatus of second embodiment of the invention.The optical touch control apparatus 200a of present embodiment and the difference of optical touch control apparatus 200 are that first light-guide device 212 ' and second light-guide device 214 ' are respectively a reflecting strips.Reflecting strips has a reflecting surface 511, and is among the embodiment of first light-guide device 212 ' and second light-guide device 214 ' adopting reflecting strips, and the first surface of first light-guide device 212 ' and second light-guide device 214 ' is reflecting surface 511.Light source module 220 ' more comprises one the 3rd light-emitting component 226, and it is arranged between the adjacent both ends of first light-guide device 212 ' and second light-guide device 214 ', to provide light to sensing region 219.When optical touch control apparatus 200a opened, the 3rd light-emitting component 226 can continue luminous, and first light-guide device 212 ' and second light-guide device 214 ' reflex to sensing region 219 for the light that will be passed to first surface (being reflecting surface 511).In addition, first light-emitting component 222 of the optical touch control apparatus 200a of present embodiment for example is for example to be only in order to provide light to the four light-guide devices 218 in order to light to the three light-guide devices 216, the second light-emitting components 224 to be provided only.
The advantage of the optical touch control apparatus 200a of present embodiment is similar to the advantage of above-mentioned optical touch control apparatus 200, will no longer repeat at this.
In sum, of the present invention have following advantage at least:
1. in the present invention, because first light-emitting component is when luminous and second light-emitting component when luminous, optical touch control apparatus has different blind areas.When first optical information and second optical information one of them when invalid, can calculate the tram of shade by another optical information.Therefore, optical touch control apparatus of the present invention and localization method thereof can effectively solve the problem of blind area.
2. when optical touch control apparatus of the present invention and localization method thereof are applied to two point touch-control field or multi-point touch field, the data less (being that dim spot is less) that first optical information that detects because of the image detecting module and second optical information comprise is so can reduce the complexity of the tram of calculating shade.Therefore, optical touch control apparatus of the present invention and localization method thereof are conducive to be applied in two point touch-control field or multi-point touch field.
3. line source module of the present invention is except can be in order to providing the line source, because the surface (being second surface) of minute surface light-guide device is provided with the minute surface reflective material layer, so when light-emitting component was closed, the minute surface light-guide device can provide mirror face function.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, any simple modification that foundation technical spirit of the present invention is done above embodiment, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (10)
1. line source module is characterized in that it comprises:
One minute surface light-guide device have a light exit side, one and the light incident side of this light exit side facing surfaces and between this light exit side and this surface, and this surface is provided with a minute surface reflective material layer; And
One light-emitting component, in order to light this light incident side to this minute surface light-guide device to be provided,
Wherein, when opening this light-emitting component, this minute surface light-guide device is the leaded light bar, convert a line source from this light exit side outgoing in order to the light that this light-emitting component is provided, and when closing this light-emitting component, this minute surface light-guide device is stripe mirror, in order to mirror face function to be provided.
2. line source module according to claim 1 is characterized in that, described minute surface light-guide device is solid cylinder or hollow cylinder.
3. line source module according to claim 1 is characterized in that, described minute surface light-guide device is semicylinder, and this light exit side of this minute surface light-guide device is one to be connected in this surperficial curved surface.
4. line source module according to claim 1 is characterized in that, described minute surface light-guide device is hollow form, and this light incident side of this minute surface light-guide device and this light exit side are respectively an opening or a photic zone.
5. line source module according to claim 1 is characterized in that, this surface of described minute surface light-guide device is curved surface or plane.
6. an optical touch control apparatus has a sensing region, it is characterized in that it comprises:
One line source module, it comprises:
One minute surface light-guide device has a light exit side, one and the light incident side of this light exit side facing surfaces and between this light exit side and this surface, and this light exit side is in the face of this sensing region, and this surface is provided with a minute surface reflective material layer; And
One light-emitting component, in order to light this light incident side to this minute surface light-guide device to be provided,
Wherein, when opening this light-emitting component, this minute surface light-guide device is the leaded light bar, convert a line source from this light exit side outgoing in order to the light that this light-emitting component is provided, and when closing this light-emitting component, this minute surface light-guide device is stripe mirror, in order to mirror face function to be provided.
7. optical touch control apparatus according to claim 7 is characterized in that, described minute surface light-guide device is solid cylinder or hollow cylinder.
8. optical touch control apparatus according to claim 7 is characterized in that, described minute surface light-guide device is semicylinder, and this light exit side of this minute surface light-guide device is one to be connected in this surperficial curved surface.
9. optical touch control apparatus according to claim 7 is characterized in that, described minute surface light-guide device is hollow form, and this light incident side of this minute surface light-guide device and this light exit side are respectively an opening or a photic zone.
10. optical touch control apparatus according to claim 7 is characterized in that, this surface of described minute surface light-guide device is curved surface or plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310016197.3A CN103186294B (en) | 2009-10-15 | 2009-10-15 | Linear light source module and there is the optical touch control apparatus of this linear light source module |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910179865 CN102043540B (en) | 2009-10-15 | 2009-10-15 | Optical touch control device and positioning method and linear light source module thereof |
| CN201310016197.3A CN103186294B (en) | 2009-10-15 | 2009-10-15 | Linear light source module and there is the optical touch control apparatus of this linear light source module |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910179865 Division CN102043540B (en) | 2009-10-15 | 2009-10-15 | Optical touch control device and positioning method and linear light source module thereof |
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| Publication Number | Publication Date |
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| CN103186294A true CN103186294A (en) | 2013-07-03 |
| CN103186294B CN103186294B (en) | 2016-03-23 |
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| CN201310016197.3A Expired - Fee Related CN103186294B (en) | 2009-10-15 | 2009-10-15 | Linear light source module and there is the optical touch control apparatus of this linear light source module |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7302156B1 (en) * | 2006-07-12 | 2007-11-27 | Lumio Inc. | Optical system |
| CN201106807Y (en) * | 2007-12-10 | 2008-08-27 | 范振魁 | Light-guiding pillar |
| US20090200453A1 (en) * | 2008-02-07 | 2009-08-13 | Lumio Inc. | Optical Touch Screen Assembly |
-
2009
- 2009-10-15 CN CN201310016197.3A patent/CN103186294B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7302156B1 (en) * | 2006-07-12 | 2007-11-27 | Lumio Inc. | Optical system |
| CN201106807Y (en) * | 2007-12-10 | 2008-08-27 | 范振魁 | Light-guiding pillar |
| US20090200453A1 (en) * | 2008-02-07 | 2009-08-13 | Lumio Inc. | Optical Touch Screen Assembly |
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| CN103186294B (en) | 2016-03-23 |
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