CN104978076B - Infrared optics touch screen system and electronic equipment - Google Patents
Infrared optics touch screen system and electronic equipment Download PDFInfo
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- CN104978076B CN104978076B CN201410133554.9A CN201410133554A CN104978076B CN 104978076 B CN104978076 B CN 104978076B CN 201410133554 A CN201410133554 A CN 201410133554A CN 104978076 B CN104978076 B CN 104978076B
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Abstract
The embodiment of the present application discloses a kind of infrared optics touch screen system, its light guide plate with the upper and lower surfaces being parallel to each other, and it is connected to the side surface between the upper surface and the lower surface, wherein, at least one side surface is the first inclined-plane with the equal out of plumb in the upper surface and the lower surface, the lower surface of light guide plate is between upper surface and image collecting device, the light of the first infrared light supply transmitting corresponding with the first side surface penetrates light guide plate by the upper surface or lower surface, after the first inclined-plane (i.e. the first side surface) reflection, it is transmitted inside light guide plate along the direction for being parallel to the upper and lower surfaces, reduce the width of equipment, and, infrared optics touch screen system provided by the embodiments of the present application, used infrared light supply and infrared light supply are located at used infrared light supply when light guide plate side As much, the quantity for not increasing infrared light supply reduces the width of equipment in the case where not increasing infrared light supply.
Description
Technical field
This application involves technical field of electronic equipment, more specifically to a kind of infrared optics touch screen system and electronics
Equipment.
Background technique
With the fast development of electronic technology, touch screen is more and more widely used in electronic equipment, infrared optics touching
Touching screen is common one of touch screen.
Infrared optics touch screen system specifically includes that the glass for showing picture, infrared light supply and image collecting device
(such as infrared camera or photosensitive sensor), wherein infrared light supply is located at the side or lower section of glass, image collector set
In the lower section of glass.Infrared optics touch screen system is real based on infrared light total reflection, transmission or scattering principle in glass
Existing touch screen functionality.
Inventor has found during realizing the application, using existing infrared optics touch screen system, works as infrared light supply
When positioned at the side of glass, the overall width that will lead to equipment is increased, and influences portability.And when infrared light supply is located under glass
Fang Shi, although will not influence plant width, in order to make infrared light supply irradiate glass comprehensively, need infrared light supply to be used
Used infrared light supply is more when being located at glass side than infrared light supply.
Summary of the invention
The purpose of the application is to provide a kind of infrared optics touch screen system, is set with reducing using less light source
Standby width.
To achieve the above object, this application provides following technical solutions:
A kind of infrared optics touch screen system is applied to electronic equipment, and the infrared optics touch screen system includes: Image Acquisition
Device, light guide plate and infrared light supply；
The light guide plate has the upper and lower surfaces being parallel to each other, and is connected to the upper surface and the following table
Side surface between face, wherein at least one side surface is oblique for first with the equal out of plumb in the upper surface and the lower surface
Face；
The light that therein is parallel to the upper surface and lower surface transmission is reflected on described by the light guide plate
Surface and the lower surface appear；
The upper surface is the contact surface of touch operation body, and the lower surface is located at the upper surface and described image acquisition
Between device；
The infrared light supply includes: and corresponding first infrared light supply in the first side surface and corresponding with the second side surface
Two infrared light supplies, first side surface are first inclined-plane, and second side surface is opposite with first side surface；Institute
The light for stating the transmitting of the first infrared light supply penetrates light guide plate by the upper surface or lower surface, after first slant reflection,
It is transmitted inside light guide plate along the direction for being parallel to the upper and lower surfaces.
Above-mentioned infrared optics touch screen system, it is preferred that second side surface is and the upper surface and the lower surface
Vertical faces directly；
Second infrared light supply is located at the outside faced directly, and the light of the second infrared light supply transmitting is by described straight
Face penetrates light guide plate, transmits inside the light guide plate along the direction for being parallel to the upper surface and the lower surface.
Above-mentioned infrared optics touch screen system, it is preferred that the within angle of first side surface and the upper surface is greater than 90
Degree；
The lower surface of the light guide plate is also located between first infrared light supply and the upper surface, and described first is infrared
The light of light source transmitting penetrates the light guide plate by the lower surface, after first slant reflection, in the light guide plate
It is transmitted along the direction for being parallel to the upper surface and the lower surface inside.
Above-mentioned infrared optics touch screen system, it is preferred that second side surface is and the upper surface and the lower surface
Second inclined-plane of equal out of plumb；
The light of the second infrared light supply transmitting penetrates light guide plate by the upper surface or lower surface, tiltedly through described second
After the reflection in face, transmitted inside the light guide plate along the direction for being parallel to the upper and lower surfaces.
Above-mentioned infrared optics touch screen system, it is preferred that the within angle of first side surface and the upper surface, Yi Jisuo
The within angle for stating the second side surface and the upper surface is all larger than 90 degree；
The lower surface of the light guide plate is also located between first infrared light supply and the upper surface, and described first is infrared
The light of light source transmitting penetrates the light guide plate by the lower surface, after first slant reflection, in the light guide plate
It is transmitted along the direction for being parallel to the upper surface and the lower surface inside；
The lower surface of the light guide plate is also located between second infrared light supply and the upper surface, and described second is infrared
The light of light source transmitting penetrates light guide plate by the lower surface, after second slant reflection, inside the light guide plate
It is transmitted along the direction for being parallel to the upper and lower surfaces.
Above-mentioned infrared optics touch screen system, it is preferred that the light guide plate is acrylic board.
Above-mentioned infrared optics touch screen system, it is preferred that first inclined-plane and the angle of the within angle of the upper surface are
45 ° or 135 °.
Above-mentioned infrared optics touch screen system, it is preferred that described image acquisition device includes: infrared camera or photosensitive biography
Sensor.
Above-mentioned infrared optics touch screen system, it is preferred that when side surface is the inclined-plane with the equal out of plumb of upper and lower surfaces
When, the outer surface of the side surface is coated with reflective layer.
A kind of electronic equipment, including infrared optics touch screen system described in any one as above.
By above scheme it is found that a kind of infrared optics touch screen system provided by the present application, having for light guide plate are mutual
Parallel upper and lower surfaces, and the side surface being connected between the upper surface and the lower surface, wherein at least one
A side surface is the first inclined-plane with the equal out of plumb in the upper surface and the lower surface, and the lower surface of light guide plate is located at upper surface
Between image collecting device, the light of the first infrared light supply transmitting corresponding with the first side surface passes through the upper surface or following table
Face penetrates light guide plate, after the first inclined-plane (i.e. the first side surface) reflection, along being parallel to the upper surface inside light guide plate
It is transmitted with the direction of lower surface, that is to say, that the first infrared light supply corresponding with the first side surface is located at the upper surface of light guide plate
Side or lower surface side are set to reduce the space of the light guide plate side surface side of infrared light supply occupancy to reduce
Standby width, moreover, infrared optics touch screen system provided by the embodiments of the present application, used infrared light supply and infrared light supply position
Used infrared light supply as much, does not increase the quantity of infrared light supply, therefore, the embodiment of the present application when light guide plate side
The width of equipment is reduced in the case where not increasing infrared light supply.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of application for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram of infrared optics touch screen system provided by the embodiments of the present application；
Fig. 2 is the top view of infrared optics touch screen system shown in Fig. 1 provided by the embodiments of the present application；
Fig. 3 is another structural schematic diagram of infrared optics touch screen system provided by the embodiments of the present application；
Fig. 4 is another structural schematic diagram of infrared optics touch screen system provided by the embodiments of the present application；
Fig. 5 is another structural schematic diagram of infrared optics touch screen system provided by the embodiments of the present application；
Fig. 6 is another structural schematic diagram of infrared optics touch screen system provided by the embodiments of the present application.
Specification and claims and term " first " in above-mentioned attached drawing, " second ", " third " " the 4th " etc. (if
In the presence of) it is part for distinguishing similar, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so that embodiments herein described herein can be in addition to illustrating herein
Sequence in addition is implemented.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of embodiments of the present application, instead of all the embodiments.It is based on
Embodiment in the application, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall in the protection scope of this application.
Infrared optics touch screen system provided by the embodiments of the present application includes: image collecting device, light guide plate and infrared light supply；
The light guide plate has the upper and lower surfaces being parallel to each other, and is connected to the upper surface and the following table
Side surface between face, wherein at least one side surface is oblique for first with the equal out of plumb in the upper surface and the lower surface
Face；
Wherein, the upper and lower surfaces of light guide plate can be square surface, wherein four angles of rectangle can be straight
Angle, or arc-shaped, i.e., rectangle can be round rectangle.
The light that therein is parallel to the upper surface and lower surface transmission is reflected on described by the light guide plate
Surface and the lower surface appear；
It should be noted that light guide plate is not that the light that will transmit in light guide plate interior parallel in upper and lower surface is fully reflective
To upper and lower surface, and only upper and lower surface will be reflected in the light that upper and lower surface is transmitted in light guide plate interior parallel.
The upper surface is the contact surface of touch operation body, and the lower surface is located at the upper surface and described image acquisition
Between device；
The touch operation body can be finger or felt pen etc..
The infrared light supply includes: and corresponding first infrared light supply in the first side surface and corresponding with the second side surface
Two infrared light supplies, first side surface are first inclined-plane, and second side surface is opposite with first side surface；Institute
The light for stating the transmitting of the first infrared light supply penetrates light guide plate by the upper surface or lower surface, after first slant reflection,
It is transmitted inside light guide plate along the direction for being parallel to the upper and lower surfaces.
That is, the light of corresponding with inclined-plane infrared light supply transmitting is after entering light guide plate, after the reflection on inclined-plane
It is parallel to the upper and lower surfaces transmission of light guide plate, to realize all standing of range of exposures.
When touch operation body is operated on upper surface 121, the image that can be acquired by image collecting device 11
Determine that touch operation body in the position on upper surface 121, i.e. contact position, realizes the function of touch screen.
Infrared optics touch screen system provided by the embodiments of the present application, light guide plate with the upper surface that is parallel to each other and under
Surface, and the side surface being connected between the upper surface and the lower surface, wherein at least one side surface be with it is described
First inclined-plane of the equal out of plumb in upper surface and the lower surface, the lower surface of light guide plate be located at upper surface and image collecting device it
Between, the light of the first infrared light supply transmitting corresponding with the first side surface penetrates light guide plate by the upper surface or lower surface, passes through
After first inclined-plane (i.e. the first side surface) reflection, passed inside light guide plate along the direction for being parallel to the upper and lower surfaces
It is defeated, that is to say, that the first infrared light supply corresponding with the first side surface is located at the upper surface side or lower surface side of light guide plate,
To reduce the space for the light guide plate side surface side that infrared light supply occupies, to reduce the width of equipment, moreover, this Shen
Please the infrared optics touch screen system that provides of embodiment, used infrared light supply made when being located at light guide plate side with infrared light supply
Infrared light supply as much, does not increase the quantity of infrared light supply, and therefore, the embodiment of the present application is not increasing infrared light supply
In the case of reduce the width of equipment.
In above-described embodiment, it is preferred that second side surface is vertical with the upper surface and the lower surface
It faces directly；
Second infrared light supply is located at the outside faced directly, and the light of the second infrared light supply transmitting is by described straight
Face penetrates light guide plate, transmits inside the light guide plate along the direction for being parallel to the upper surface and the lower surface.
Fig. 1 and Fig. 2 are please referred to, Fig. 1 is a kind of structural representation of infrared optics touch screen system provided by the embodiments of the present application
Figure, Fig. 2 are the top view of infrared optics touch screen system shown in Fig. 1, infrared optics touch screen system packet provided by the embodiments of the present application
It includes:
Image collecting device 11, light guide plate 12 and infrared light supply；Wherein
Light guide plate 12 has the upper surface 121 and lower surface 122 being parallel to each other, and is connected to the upper surface and following table
Side surface between face, wherein the first side surface 123 is oblique for first with the equal out of plumb in the upper surface 121 and lower surface 122
Face；Second side surface 124 is and upper surface 121 and lower surface 122 are mutually vertical faces directly
The upper surface 121 is the contact surface of touch operation body, and the lower surface 122 is located at the upper surface 121 and institute
It states between image collecting device 11；
The infrared light supply include: first infrared light supply 131 corresponding with the first side surface 123 and with the second side surface
124 corresponding second infrared light supplies 132, second side surface 124 are opposite with first side surface 123；
Wherein, the within angle of first side surface 123 and upper surface 121 is greater than 90 degree, correspondingly, the light guide plate
Lower surface 122 is also located between first infrared light supply 131 and the upper surface 121, at this point, the first infrared light supply 131 is sent out
The light penetrated penetrates light guide plate 12 by lower surface 122, after first inclined-plane (i.e. first side 123) reflection, in leaded light
It is transmitted inside plate 12 along the direction for being parallel to the upper surface 121 and lower surface 122.
Wherein, the within angle of the first side surface 123 and upper surface 121 are as follows: upper surface 121 and lower surface 122 are by described the
One side surface 123 is cut, and first side surface 123 is formed by with the upper surface 121, is located at upper surface 121 and following table
Angle between face 122.
Second side be with upper surface 121 and lower surface 122 is orthogonal faces directly, 132 hairs of the second infrared light supply
The light penetrated is penetrated after light guide plate perpendicular to second side 124 and is transmitted along the direction for being parallel to upper surface 121 and lower surface 122.
In the embodiment of the present application, the first infrared light supply 131 is located at the same side of light guide plate 12 with image collecting device 11,
And first infrared light supply 131 emit light be after the first slant reflection in light guide plate transmission realize infrared light supply transmitting
All standing of the light to light guide plate, when infrared light supply being avoided to be located at below light guide plate, in order to realize infrared light to the complete of light guide plate
Covering needs the problem of infrared light supply to be used when being located at glass side than infrared light supply more than used infrared light supply.
In addition, in traditional infrared optics touch screen system, it is infrared in order to realize when infrared light supply is located at below light guide plate
All standing of the light to light guide plate, it is possible to also need to maintain a certain distance between infrared light supply and light guide plate to be just able to achieve and cover entirely
Lid, and in the embodiment of the present application, it may not be necessary to keep certain distance to can be achieved with infrared light between infrared light supply and light guide plate
All standing to light guide plate, therefore, infrared optics touch screen system provided by the embodiments of the present application also reduce the thickness of electronic equipment
Degree.
Another structural schematic diagram of infrared optics touch screen system provided by the embodiments of the present application is as shown in Figure 3.
Different from embodiment illustrated in fig. 1, in the embodiment of the present application, the within angle of the first side surface 123 and upper surface 121 is small
In 90 degree, correspondingly, the upper surface 121 of light guide plate is between the first infrared light supply 131 and lower surface 122, at this point, first is red
The light that outer light source 131 emits penetrates light guide plate 12 by upper surface 131, after the first inclined-plane (i.e. first side 123) reflection,
It is transmitted inside light guide plate 12 along the direction for being parallel to upper surface 121 and lower surface 122；
Second side be with upper surface 121 and lower surface 122 is orthogonal faces directly, 132 hairs of the second infrared light supply
The light penetrated is penetrated after light guide plate perpendicular to second side 124 and is transmitted along the direction for being parallel to upper surface 121 and lower surface 122.
In another embodiment of the application, second side surface is and the equal out of plumb in the upper surface and the lower surface
The second inclined-plane；
The light of the second infrared light supply transmitting penetrates light guide plate by the upper surface or lower surface, tiltedly through described second
After the reflection in face, transmitted inside the light guide plate along the direction for being parallel to the upper and lower surfaces.
In the embodiment of the present application, since the first side surface and the second side surface are inclined-plane, with the first side surface pair
The first infrared light supply answered is located at the upper surface side or lower surface side of light guide plate, and corresponding with the second side surface second is infrared
The mountain surface that light source also is located at light guide plate is primary or lower surface is primary, to further reduce the width of equipment.
Referring to Fig. 4, Fig. 4 is another structural schematic diagram of infrared optics touch screen system provided by the embodiments of the present application.
In the embodiment of the present application, the second side surface 124 is oblique for second with the equal out of plumb in upper surface 121 and lower surface 122
Face；
The light of second infrared light supply 132 transmitting penetrates light guide plate 12 by the upper surface 121 or lower surface 122, through institute
After the reflection for stating the second inclined-plane, along the direction for being parallel to the upper surface 121 and lower surface 122 inside the light guide plate 12
Transmission.
Wherein, the within angle of the second side surface 124 and upper surface 121 can be greater than 90 degree, correspondingly, under light guide plate 12
Surface 122 is also located between the second infrared light supply 132 and upper surface 121, at this point, the light of the second infrared light supply 132 transmitting passes through
Lower surface 122 penetrates light guide plate 12, by the second inclined-plane (i.e. the second side surface 124) reflection after, inside light guide plate 12 along
It is parallel to the direction transmission of upper surface 121 and lower surface 122.
Wherein, the within angle of the second side surface 124 and upper surface 121 are as follows: upper surface 121 and lower surface 122 are by second side
Surface 124 is cut, and second side surface 124 is formed by with the upper surface 121, is located at upper surface 121 and lower surface 122
Between angle.
The angle of first side surface 123 and upper surface 121 is greater than 90 degree, correspondingly, the lower surface 122 of the light guide plate is also
Between first infrared light supply 131 and the upper surface 121, at this point, under the light of the first infrared light supply 131 transmitting passes through
Surface 122 penetrates light guide plate 12, by first inclined-plane (i.e. first side 123) reflection after, inside light guide plate 12 along
It is parallel to the direction transmission of the upper surface 121 and lower surface 122.In the embodiment of the present application, the first infrared light supply 131 and second
Infrared light supply 132 is located at the same side of light guide plate with image collecting device 11, does not also need between infrared light supply and light guide plate
The thickness of electronic equipment can be reduced to all standing of light guide plate by keeping certain distance to can be achieved with infrared light.
Another structural schematic diagram of infrared optics touch screen system provided by the embodiments of the present application is as shown in Figure 5.
Different from embodiment illustrated in fig. 4, in the embodiment of the present application, the angle of the second side surface 124 and upper surface 121 is less than
90 degree, correspondingly, the upper surface 121 of light guide plate 12 is between the second infrared light supply 132 and lower surface 122, at this point, second is red
The light that outer light source 132 emits penetrates light guide plate 12 by upper surface 121, reflects by the second inclined-plane (i.e. the second side surface 124)
Afterwards, it is transmitted inside light guide plate 12 along the direction for being parallel to upper surface 121 and lower surface 122.
The angle of first side surface 123 and upper surface 121 is greater than 90 degree, correspondingly, the lower surface 122 of the light guide plate is also
Between first infrared light supply 131 and the upper surface 121, at this point, under the light of the first infrared light supply 131 transmitting passes through
Surface 122 penetrates light guide plate 12, by first inclined-plane (i.e. first side 123) reflection after, inside light guide plate 12 along
It is parallel to the direction transmission of the upper surface 121 and lower surface 122.
Another structural schematic diagram of infrared optics touch screen system provided by the embodiments of the present application is as shown in fig. 6, with Fig. 5 institute
Show that embodiment is different, in the embodiment of the present application, the angle of the first side surface 123 and upper surface 121 is less than 90 degree, correspondingly, leading
The upper surface 121 of tabula rasa is between the first infrared light supply 131 and lower surface 122, at this point, what the first infrared light supply 131 emitted
Light penetrates light guide plate 12 by upper surface 131, after the first inclined-plane (i.e. first side 123) reflection, inside light guide plate 12
It is transmitted along the direction for being parallel to upper surface 121 and lower surface 122.
The angle of second side surface 124 and upper surface 121 is less than 90 degree, correspondingly, the upper surface 121 of light guide plate 12 is located at
Between second infrared light supply 132 and lower surface 122, at this point, the light of the second infrared light supply 132 transmitting is penetrated by upper surface 121
Light guide plate 12, after the second inclined-plane (i.e. the second side surface 124) reflection, along being parallel to upper surface inside light guide plate 12
121 and lower surface 122 direction transmission.
In above-described embodiment, it is preferred that the light guide plate can be acrylic board, or it is other can be guide-lighting it is saturating
Bright plate appears i.e. as long as upper and lower surfaces can be reflected into the light that upper and lower surfaces are transmitted for its interior parallel
It can；
In above-described embodiment, the value range of first side surface 123 and the angle of the within angle of upper surface 121 is 0 °
~90 ° and 90 °~180 °, wherein do not include 0 °, 90 ° and 180 °
Preferably, the angle of first side surface 123 and the within angle of upper surface 121 is 45 ° or 135 °；
When the first side surface 123 and the angle of the within angle of upper surface are 45 °, the first infrared light supply 131 with perpendicular to
The mode of upper surface 121 penetrates light guide plate 12, by first side surface 123 reflection after, inside the light guide plate along
It is parallel to the direction transmission of upper surface 121 and lower surface 122；
When the first side surface 123 and the angle of the within angle of upper surface are 135 °, the first infrared light supply 131 with perpendicular to
The mode of lower surface 122 penetrates light guide plate 12, by first side surface 123 reflection after, inside the light guide plate along
It is parallel to the direction transmission of upper surface 121 and lower surface 122；
When the within angle of the first side surface 123 and upper surface 121 is other angles in its value range, can pass through
The position and incident angle for adjusting the first infrared light supply 131 make the first infrared light supply 131 be located at the lower surface one of light guide plate
Side, and the space of the side of the first side surface of light guide plate will not be occupied.
Above-described embodiment, it is preferred that described image acquisition device can be infrared camera or photosensitive sensor etc..
Above-described embodiment, it is preferred that described when the side surface is the inclined-plane with the equal out of plumb of upper and lower surfaces
The outer surface of side surface is coated with reflective layer, to prevent the light for penetrating light guide plate to be refracted in atmosphere by inclined-plane.
Specifically, can the outside of the first side surface plate one layer of reflective layer, when the second side surface be with upper surface and under
When the inclined-plane of the equal out of plumb in surface, one layer of reflective layer can also be plated in the outside of the second side surface.
It should be noted that in above-described embodiment, only to be set on the outside of the first side surface of light guide plate and the second side surface
It is equipped with for infrared light supply and is illustrated, when (third side surface and the 4th side surface are for third side surface and the 4th side surface
With the adjacent side of third side surface and the 4th side surface, and third side surface and the 4th side surface are opposite) outside also set
When being equipped with infrared light supply, third side surface can for upper and lower surfaces are vertical faces directly, be also possible to and upper surface
With the third inclined-plane of the equal out of plumb in lower surface；Similarly, the 4th side surface can for upper and lower surfaces are vertical faces directly,
It is also possible to the 4th inclined-plane with the equal out of plumb of upper and lower surfaces；Third infrared light supply corresponding with third side surface and with
The set-up mode of corresponding 4th infrared light supply in 4th side surface is referred to embodiment as described above, and which is not described herein again.
The a kind of electronic equipment that the embodiment of the present application also provides, with infrared light supply touch screen described in any one as above
System.
The foregoing description of the disclosed embodiments makes professional and technical personnel in the field can be realized or use the application.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the application.Therefore, the application
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (9)
1. a kind of infrared optics touch screen system is applied to electronic equipment, which is characterized in that the infrared optics touch screen system packet
It includes: image collecting device, light guide plate and infrared light supply；The light guide plate is acrylic board；
The light guide plate has the upper and lower surfaces that are parallel to each other, and be connected to the upper surface and the lower surface it
Between side surface, wherein at least one side surface is the first inclined-plane with the equal out of plumb in the upper surface and the lower surface；
The light that therein is parallel to the upper surface and lower surface transmission is reflected into the upper surface by the light guide plate
It is appeared with the lower surface；
The upper surface is the contact surface of touch operation body, and the lower surface is located at the upper surface and described image acquisition device
Between；
The infrared light supply includes: and corresponding first infrared light supply in the first side surface and corresponding with the second side surface second red
Outer light source, first side surface are first inclined-plane, and second side surface is opposite with first side surface；Described
The light of one infrared light supply transmitting penetrates light guide plate by the upper surface or lower surface, after first slant reflection, is leading
It is transmitted inside tabula rasa along the direction for being parallel to the upper and lower surfaces.
2. infrared optics touch screen system according to claim 1, which is characterized in that second side surface be with it is described on
The surface and lower surface is vertical faces directly；
Second infrared light supply is located at the outside faced directly, faces directly described in the light process of the second infrared light supply transmitting
Enter light guide plate, is transmitted inside the light guide plate along the direction for being parallel to the upper surface and the lower surface.
3. infrared optics touch screen system according to claim 2, which is characterized in that first side surface and the upper table
The within angle in face is greater than 90 degree；
The lower surface of the light guide plate is also located between first infrared light supply and the upper surface, first infrared light supply
The light of transmitting penetrates the light guide plate by the lower surface, after first slant reflection, inside the light guide plate
It is transmitted along the direction for being parallel to the upper surface and the lower surface.
4. infrared optics touch screen system according to claim 1, which is characterized in that second side surface be with it is described on
Second inclined-plane of the equal out of plumb in surface and the lower surface；
The light of the second infrared light supply transmitting penetrates light guide plate by the upper surface or lower surface, through second inclined-plane
After reflection, transmitted inside the light guide plate along the direction for being parallel to the upper and lower surfaces.
5. infrared optics touch screen system according to claim 4, which is characterized in that first side surface and the upper table
The within angle in face and the within angle of second side surface and the upper surface are all larger than 90 degree；
The lower surface of the light guide plate is also located between first infrared light supply and the upper surface, first infrared light supply
The light of transmitting penetrates the light guide plate by the lower surface, after first slant reflection, inside the light guide plate
It is transmitted along the direction for being parallel to the upper surface and the lower surface；
The lower surface of the light guide plate is also located between second infrared light supply and the upper surface, second infrared light supply
The light of transmitting penetrates light guide plate by the lower surface, after second slant reflection, inside the light guide plate along
It is parallel to the direction transmission of the upper and lower surfaces.
6. infrared optics touch screen system according to claim 1, which is characterized in that first inclined-plane and the upper surface
Within angle angle be 45 ° or 135 °.
7. infrared optics touch screen system according to claim 1, which is characterized in that described image acquisition device includes: red
Outside line video camera or photosensitive sensor.
8. infrared optics touch screen system described in -7 any one according to claim 1, which is characterized in that when side surface be with it is upper
When the inclined-plane of the equal out of plumb in surface and lower surface, the outer surface of the side surface is coated with reflective layer.
9. a kind of electronic equipment, which is characterized in that including the infrared optics touch screen system as described in claim 1-8 any one
System.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410133554.9A CN104978076B (en) | 2014-04-03 | 2014-04-03 | Infrared optics touch screen system and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410133554.9A CN104978076B (en) | 2014-04-03 | 2014-04-03 | Infrared optics touch screen system and electronic equipment |
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| CN104978076A CN104978076A (en) | 2015-10-14 |
| CN104978076B true CN104978076B (en) | 2019-04-26 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101231450A (en) * | 2008-02-25 | 2008-07-30 | 陈伟山 | Multipoint and object touch panel arrangement as well as multipoint touch orientation method |
| CN102637097A (en) * | 2012-03-30 | 2012-08-15 | 广东威创视讯科技股份有限公司 | Touch positioning device and touch projection display device with same |
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| CN102236478B (en) * | 2010-05-04 | 2013-06-05 | 原相科技股份有限公司 | Optical touch display device |
| CN202661981U (en) * | 2012-03-30 | 2013-01-09 | 广东威创视讯科技股份有限公司 | Touch display device |
| CN103294282A (en) * | 2013-05-03 | 2013-09-11 | 西安Tcl软件开发有限公司 | Infrared touch device and electronic equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101231450A (en) * | 2008-02-25 | 2008-07-30 | 陈伟山 | Multipoint and object touch panel arrangement as well as multipoint touch orientation method |
| CN102637097A (en) * | 2012-03-30 | 2012-08-15 | 广东威创视讯科技股份有限公司 | Touch positioning device and touch projection display device with same |
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