CN102622133A - Infrared touch screen for changing infrared light transmission paths and touch point recognizing method for infrared touch screen - Google Patents
Infrared touch screen for changing infrared light transmission paths and touch point recognizing method for infrared touch screen Download PDFInfo
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- CN102622133A CN102622133A CN2012100394057A CN201210039405A CN102622133A CN 102622133 A CN102622133 A CN 102622133A CN 2012100394057 A CN2012100394057 A CN 2012100394057A CN 201210039405 A CN201210039405 A CN 201210039405A CN 102622133 A CN102622133 A CN 102622133A
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Abstract
The invention discloses an infrared touch screen for changing infrared light transmission paths and a touch point recognizing method for the infrared touch screen. In the touch screen, infrared light emitted by an infrared emission unit positioned on a non-touch face of the touch screen is changed in ray transmission direction by an emitting light guide unit prior to being transmitted to a touch face to form an infrared ray optical network, and then is changed in ray transmission direction by a receiving light guide unit prior to being transmitted to an infrared receiving unit of a non-touch face of the touch screen. By the aid of the infrared touch screen and the method, touch suspension height of the infrared touch screen is decreased, light interference resistance of the infrared touch screen is enhanced, and the protruded height and width of the edge of the touch face of the infrared touch screen are decreased.
Description
Technical field
The present invention relates to a kind of infrared touch panel, relate in particular to a kind of method that changes the infrared touch panel and the recognizing touch operation point thereof of infrared light transmission path.
Background technology
Existing infrared touch system; It adopts mode all is through by being installed in X, Y direction arrange uniform infrared transmitting tube and infrared receiving tube around along the touch area; Control and driving circuit drive infrared transmitting tube and infrared receiving tube under the control of MCU run time version, the infrared ray matrix that corresponding scanning formation directions X and Y direction are intersected anyhow.When touching, finger or other object will block the infrared ray anyhow through this point, judge the position of touch point on touch-screen by control system.
At present in the infrared touch panel field, be 200820109789.4 " a kind of catoptron that is applied on the touch-screen " like the patent No., this invention fundamental purpose is: utilize principle of reflection will, the element number that transmits and receives that reduces on the infrared touch panel reduces by half; The cardinal principle that like the patent No. is " a kind of multi-point touch panel of pure flat structure " this invention of 201020271758.6 is: on the basis of common infrared touch panel, increased a LGP; Be used to fill the cavity on the common touch-screen body touch face, seem pure flat effect thereby reach the surface; Like 200710028616.X " a kind of infrared touch panel and multi-point touch locating method thereof " etc.No matter in existing infrared touch panel patented technology or the product is single-point or multiple spot infrared touch panel, and the basic assembling mode of its infrared touch panel all is that infrared tube is put on the touch face of touch-screen, in this structure, all has the problem of following three aspects:
1, the touch hoverheight is higher.Owing to the infrared light directive infrared receiving tube that sends from infrared transmitting tube; Its infrared light mainly concentrates on the middle part of pipe, and when the touch body did not also touch the glass surface of touch-screen, in fact infrared light was blocked; This is to touch to respond; This phenomenon is called the touch hoverheight in this area, this problem can influence touch feeling, and is easy to generate misoperation; Hope all that generally this value is more little good more, but infrared touch panel body now on the market there is all generally 2-5mm to touch hoverheight.
2, anti-high light interference capability is poor.Existing infrared touch panel; Because infrared tube is to be placed on the touch face; Light from outside is easy to be mapped to infrared receiver, thereby influences the operate as normal of touch-screen, and therefore general screen body all can not be in operate as normal under the high light (like sunlight or stronger incandescent lamp).
3, four limits of infrared touch panel touch face all exist broad and higher edge convexity.In existing infrared touch panel field; Infrared tube generally all is installed in the top that the screen body touches face; Add infrared tube protection thickness of structure, thereby become higher edge protruding, to the installation and the very big restriction of touch apparatus appearance design generation of touch-screen with broad at the quadrilateral of screen body.
Summary of the invention
The objective of the invention is to overcome the problems referred to above that existing infrared touch panel exists; A kind of method that changes the infrared touch panel and the recognizing touch operation point thereof of infrared light transmission path is provided; After adopting the present invention, can effectively reduce ubiquitous hoverheight problem in the traditional infrared touch-screen, can not influenced by light from outside; The anti-light interference problem of traditional infrared touch-screen can be effectively solved, protruding edge height and the width of existing infrared touch panel can be effectively reduced simultaneously.
For realizing above-mentioned purpose, the technical scheme that the present invention adopts is following:
A kind of infrared touch panel that changes the infrared light transmission path; It is characterized in that: be positioned at the infrared light that the infrared emission unit of the non-touch face of touch-screen body sends; Form the infrared ray net through being transferred to touch face after the emission light element change light transmission direction, be transferred to the infrared receiver that is positioned at the non-touch face of touch-screen body through receiving after light element changes the light transmission direction again.
Said emission light element can be the combination of leaded light post, reflective mirror or leaded light post and reflective mirror with the reception light element.
When said emission light element is the leaded light post with the reception light element; The infrared light that infrared emission unit sends; Entering emission light element portion within it is transferred to touch face after changing the light transmission direction, and entering is transferred to the infrared receiver that is positioned at the non-touch face of touch-screen body after receiving light element portion's change within it light transmission direction again.
When said emission light element is reflective mirror with the reception light element; The infrared light that infrared emission unit sends; Get into and be transferred to touch face after the emission light element changes the light transmission direction through reflection way, get into again and be transferred to the infrared receiver that is positioned at the non-touch face of touch-screen body after the reception light element changes the light transmission direction through reflection way.
Said emission light element is the leaded light post; When the reception light element is reflective mirror; The infrared light that infrared emission unit sends; Be transferred to touch face after getting into emission light element portion's change within it light transmission direction, get into again and be transferred to the infrared receiver that is positioned at the non-touch face of touch-screen body after the reception light element changes the light transmission direction through reflection way.
Said emission light element is a reflective mirror; When the reception light element is the leaded light post; The infrared light that infrared emission unit sends; Entering emission light element is transferred to touch face after changing the light transmission direction through reflection way, and entering is transferred to the infrared receiver that is positioned at the non-touch face of touch-screen body after receiving light element portion's change within it light transmission direction again.
The non-touch face of said infrared touch panel comprises the back side and the side of touch-screen body, and infrared emission unit and infrared receiver are arranged on the back side of touch-screen body or/and the side.
Described leaded light post is: the object that can change the definite shape of light transmission direction.
Described catoptron is: the object that the surface scribbles the object of reflective material or utilizes principle of reflection to be designed to.
The present invention includes multiple integrated mode; Placing the touch-screen back side and adopt leaded light post mode to change the infrared light transmission direction with infrared emission unit and infrared receiver is example: said emission light element includes first transport part, first reflecting part, second transport part, second reflecting part and the 3rd transport part with the reception light element, and the infrared light that infrared emission unit sends is transferred to touch face through first transport part, first reflecting part, second transport part, second reflecting part and the 3rd transport part of emission light element successively.
The infrared light that said infrared emission unit sends forms total reflection at first reflecting part and second reflecting part of emission light element.
First transport part of the infrared light that said infrared emission unit sends and emission light element to inject face vertical, the infrared light that transmits in the infrared light of transmission and first transport part and the 3rd transport part vertical second the transport part in.
Said emission light element is symmetricly set on touch-screen body both sides with the reception light element; Infrared emission unit is arranged on the face of the injecting place of first transport part of emission light element, and infrared receiver is arranged on the outgoing plane place of first transport part that receives light element.
Said infrared emission unit comprises X axle infrared emission unit and Y axle infrared emission unit; Be connected to processing unit MCU after X axle infrared emission unit and the parallel connection of Y axle infrared emission unit; Infrared receiver comprises X axle infrared receiver and Y axle infrared receiver, is connected to processing unit MCU after X axle infrared receiver and the parallel connection of Y axle infrared receiver.
A kind of method that changes the infrared touch panel recognizing touch operation point of infrared light transmission path is characterized in that, comprises the steps:
A, be positioned at the infrared light that the infrared emission unit of the non-touch face of touch-screen body sends, be transferred to touch face after changing the light transmission direction through the emission light element, be transferred to the infrared receiver that is positioned at the non-touch face of touch-screen body through receiving light element again;
B, when touching body and touch, the infrared ray of transmission stopped on touch face, the infrared signal Strength Changes of receiving through infrared receiver confirms to touch the coordinate position of body, thereby to touching the body location.
In the said b step, processing unit MCU confirms to touch the coordinate position of body through infrared receiver being received the situation of change of light signal strength.
Behind the system initialization, start the infrared emission unit and the infrared receiver of X, Y axle, X, Y axle are carried out infrared scan; Each scanning element touches analysis to received signal, if any touch, then produces the touching position information of X, Y respectively; System processing unit MCU judges whether effective touching position information of scanning element, when not having effective touching position information, returns initialization; When effective touching position information, system processing unit MCU collects effective touch position data of X, Y axle scanning element, is the positional information of true touch point; System processing unit MCU judges whether that the touch point positional information that satisfies condition produces, and returns initialization, when sometimes when not having; Each the touch point coordinates transmission that draws in computer system, is returned initialization then.
Employing the invention has the advantages that:
One, behind employing the present invention; The IR that the infrared emission unit of infrared touch panel sends is adjusted to IR behind the emission light element and is shielded body and touch the face surface and transmit near zero elevation; And there is certain height difference in traditional infrared touch-screen IR with screen body touch face surface, thereby has reduced the hoverheight of traditional infrared touch-screen.
Two, among the present invention, because infrared tube can be embedded into touch-screen body bottom, so light from outside is difficult to have influence on infrared receiver, thereby promoted the anti-light interference performance of traditional infrared touch-screen.
Three, behind employing the present invention; Reduced the protruding height and the width of frame of traditional infrared touch-screen; Can accomplish ultralow ultra narrow frame, improve the aesthetics of screen body, promote the touch display assembling capacity; Overcome the traditional infrared touch-screen because infrared tube is placed in touch-screen body upper surface, the protruding wide problem of edge Tai Gaotai.
Four, among the present invention; When said emission light element is the leaded light post with the reception light element; The infrared light that infrared emission unit sends, entering emission light element portion within it is transferred to touch face after changing the light transmission direction, and entering is transferred to the infrared receiver that is positioned at the non-touch face of touch-screen body after receiving light element portion's change within it light transmission direction again; Repeatedly total reflection and transmission; Be convenient to control, can effectively control ambient light it is disturbed, improve touch quality useful signal.
Five, among the present invention; When said emission light element is reflective mirror with the reception light element; The infrared light that infrared emission unit sends; Get into and be transferred to touch face after the emission light element changes the light transmission direction through reflection way; Get into again and be transferred to the infrared receiver that is positioned at the non-touch face of touch-screen body after the reception light element changes the light transmission direction through reflection way, the infrared ray that places touch-screen body bottom is effectively reflexed on the touching medium through the emission light element, improved accuracy of identification.
Six, among the present invention; Said emission light element is the leaded light post, when the reception light element is reflective mirror, and the infrared light that infrared emission unit sends; Entering emission light element portion's mode within it is transferred to touch face after changing the light transmission direction; Get into to receive again and be transferred to the infrared receiver that is positioned at the non-touch face of touch-screen body after the mode of light element through surface reflection changes the light transmission direction, guaranteed that infrared light all transmits, and has improved light guide effect in the emission light element.
Seven, among the present invention; The non-touch face of said touch-screen body comprises the back side and the side of touch-screen body, and infrared emission unit and infrared receiver are arranged on the back side of touch-screen body or/and the side, and the mode of transmission of angle that changes infrared light is various; Be convenient to shield the assembling of body; The frame that has guaranteed the touch-screen body becomes low narrow frame, and applied range adopts this structure further to reduce the seal ring thickness of traditional infrared touch-screen.
Eight, among the present invention, said emission light element can be the combination of leaded light post, reflective mirror or leaded light post and reflective mirror with the reception light element, can carry out composite design according to actual needs, uses more versatile and flexible.
Nine, the method for the touch-screen recognizing touch operation point of the change light transmission path among the present invention; Comprise the steps: to be positioned at the infrared light that the infrared emission unit of the non-touch face of touch-screen body sends; Through being transferred to touch face after the emission light element change light transmission direction, be transferred to the infrared receiver that is positioned at the non-touch face of touch-screen body through receiving light element again; When touching the body touch; The infrared ray of transmission is stopped on touch face; Infrared signal Strength Changes through infrared receiver is received confirms to touch the coordinate position of body, thereby to touching the body location, adopts this mode not only to reduce seal ring thickness; And reduced external interference, improved the touch precision.
Description of drawings
Fig. 1 is embodiments of the invention 1 synoptic diagram;
Fig. 2 is embodiments of the invention 2 synoptic diagram;
Fig. 3 is embodiments of the invention 3 synoptic diagram;
Fig. 4 is embodiments of the invention 4 synoptic diagram;
Fig. 5 connects block diagram for system of the present invention
Be labeled as among the figure: 1, infrared emission unit, 2, infrared receiver, 3, the emission light element, 4, receive light element, 5, touch body, 6, touch face, 7, the back side, 8, the side.
Embodiment
Present embodiment utilizes the leaded light post of prismatic structure to implement the leaded light transmission.As shown in Figure 1, infrared emission unit 1 is an infrared transmitting tube, and infrared receiver 2 is an infrared receiving tube.After the infrared light that infrared transmitting tube sends is injected emission light element 3 perpendicular to the plane of incidence of emission light element 3; Arrive first light guiding surface of emission light element; As long as the angle of this light guiding surface and surface level is arranged on 45 °, (light is 42.8 from the critical angle that acrylic material or glass material incide air to its infrared ray greater than the cirtical angle of total reflection of its leaded light material in the incident angle of its light guiding surface; Light is 39 from the critical angle that the PC material incides air; ); Just can make this moment IR form total reflection at first light guiding surface of emission light element 3 in leaded light post internal transmission; Infrared ray will all reflex on second reflecting surface of emission light element; Angle with this second prismatic face and surface level is arranged on 45 ° equally, and infrared light continues to be transferred to reception light element 4 after total reflection is transferred to touch face 6 formation infrared ray nets once more on this face; Its infrared light is transferred to infrared receiving tube through same leaded light mode and is received, and forms a complete emission and receives system.
When touch body 5 touches the touch-screen body; The ultrared transmission path that penetrates from emission light element 3 will be stopped; The infrared signal intensity that infrared receiver 2 receives will weaken, and controller just can confirm to touch the coordinate position of body through the variation of analytic signal.Thereby reach touching the effect of body location.
Present embodiment utilizes the leaded light post of column construction to implement the leaded light transmission.As shown in Figure 2; After the infrared light that infrared transmitting tube sends is injected emission light element 3 perpendicular to the plane of incidence surface of emission light element 3; Launch the radius of the arcwall face of light element 3 through adjustment; Make the critical angle (light from critical angle that plastic material incide air be 42.8, the angle on arcwall face and plane be meant the tangent line of arcwall face and the angle on plane) of the incident angle of the infrared light of injecting emission light element 3 arcwall faces greater than total reflection, this moment, infrared light can form total reflection in emission light element 3 inside; Infrared ray is launched light element 3 through penetrating after the total reflection repeatedly in emission light element 3; And the touch face of being transferred to formation infrared ray net, receiving light element 4 process the same manners transmission backs, form a complete emission and receive system by infrared receiver 2 receptions.
When touch body 5 touches the screen body; The ultrared transmission path that penetrates from emission light element 3 will be stopped; Infrared receiver 2 receives that infrared signal intensity will weaken, and controller just can confirm to touch the coordinate position of body through the variation of analytic signal.Thereby reach touching the effect of body location.
Present embodiment utilizes reflective light guide structure to implement leaded light transmission, for example reflective mirror.As shown in Figure 3; The infrared light that infrared emission unit 1 sends is parallel to horizontal direction directive emission light element 3; As long as first reflecting surface of assurance emission light element 3 and the angle of second reflecting surface and surface level are at 45 °, infrared signal can be to launch second reflecting surface of light element 3 after the reflection of first reflecting surface perpendicular to the direction directive of surface level at this moment; Once more after the reflection; Light will be transferred to infrared receiver 2 in the same way through reception light element 4 again and is received after will being transferred to touch face formation infrared ray net, accomplish a complete emission and receive system.
When touch body 5 touched the screen body, the ultrared transmission path that penetrates from emission light element 3 will be stopped that receiving end receives that infrared signal intensity will weaken, and controller just can confirm to touch the coordinate position of body through the variation of analytic signal.Thereby reach touching the effect of body location.
Present embodiment is the side-mounted light guide structure of infrared tube; As shown in Figure 4, after the infrared light that infrared emission unit 1 sends is directly injected the emission light element 3 of transmitting terminal, after the reflecting surface reflection of this infrared signal through emission light element 3; Its light transmission forms the infrared ray net to touch face; Be transferred to again and receive light element 4,, form a complete emission and receive system receiving reverse in an identical manner transmission back, light element 4 places by infrared receiver 2 receptions.This structure infrared tube can reduce to shield the thickness of body at the touch-screen body side surface.
When touch body 5 touches the screen body; The ultrared transmission path that penetrates from emission light element 3 will be stopped on touch face; Receiving end receives that infrared signal intensity will weaken, and controller just can confirm to touch the coordinate position of body through the variation of analytic signal.Thereby reach touching the effect of body location.
A kind of touch-screen that changes light transmission path; Be positioned at the infrared light that the infrared emission unit 1 of the non-touch face of touch-screen body sends; Form the infrared ray nets through being transferred to touch face 6 after the emission light element 3 change light transmission directions, be transferred to the infrared receiver 2 that is positioned at the non-touch face of touch-screen body through receiving light element 4 again.
Among the present invention, said emission light element 3 can be the combination of leaded light post, reflective mirror or leaded light post and reflective mirror with reception light element 4, but is not limited thereto, and also can be other objects that can change the transmission direction of light.
When said emission light element 3 is the leaded light post with reception light element 4; The infrared light that infrared emission unit 1 sends; Be transferred to touch face 6 after getting into emission light element 3 mode of portion through total reflection changing the light transmission direction within it, get into again and be transferred to the infrared receiver 2 that be positioned at touch-screen body non-touch face after receiving light element 4 mode of portion through total reflection changing the light transmission direction within it.
When said emission light element 3 is reflective mirror with reception light element 4; The infrared light that infrared emission unit 1 sends; Get into and to be transferred to touch face 6 after the mode of emission light element 3 through surface reflection changes the light transmission direction, get into again to receive and be transferred to the infrared receiver 2 that is positioned at the non-touch face of touch-screen body after the mode of light element 4 through surface reflection changes the light transmission direction.
When said emission light element 3 is the leaded light post; When reception light element 4 is reflective mirror; The infrared light that infrared emission unit 1 sends; Be transferred to touch face 6 after getting into emission light element 3 mode of portion through total reflection changing the light transmission direction within it, get into again to receive and be transferred to the infrared receiver 2 that is positioned at the non-touch face of touch-screen body after the mode of light element 4 through surface reflection changes the light transmission direction.
When said emission light element 3 is a reflective mirror; When reception light element 4 is the leaded light post; The infrared light that infrared emission unit 1 sends; Get into and to be transferred to touch face 6 after the mode of emission light element 3 through surface reflection changes the light transmission direction, get into again and be transferred to the infrared receiver 2 that be positioned at touch-screen body non-touch face after receiving light element 4 mode of portion through total reflection changing the light transmission direction within it.
Among the present invention; Said screen is touched the back side 7 and side 8 that screen body non-touch face comprises the touch-screen body, and infrared emission unit 1 and infrared receiver 2 are arranged on the back side 7 of touch-screen body or/and side 8, for example; Infrared emission unit 1 all is arranged on the back side 7 with infrared receiver 2; Or infrared emission unit 1 all is arranged on side 8 with infrared receiver 2, or one be arranged on the back side 7, and another is arranged on side 8.
Described leaded light post can change the transparent or semitransparent object of the definite shape of light transmission direction for utilizing total reflection principle, when adopting the leaded light post, and best results during its infrared light portion's formation within it total reflection transmission, but be not limited thereto mode.The lens that described catoptron scribbles reflective material object or utilizes total reflection principle to be designed to for the surface.
Among the present invention; When adopting the leaded light post; Like the leaded light rod structure among Fig. 1; Can comprise first transport part, first reflecting part, second transport part, second reflecting part and the 3rd transport part, the infrared light that infrared emission unit sends is transferred to touch face through first transport part, first reflecting part, second transport part, second reflecting part and the 3rd transport part of emission light element successively.When adopting this structure, the infrared light that said infrared emission unit sends forms total reflection at first reflecting part and second reflecting part of emission light element.First transport part of the infrared light that said infrared emission unit sends and emission light element to inject face vertical; First reflecting part and second reflecting part are 42.8-45 ° with the angle of the face of touch, and the infrared light of transmission is vertical with the infrared light of transmission in the 3rd transport part with first transport part in second transport part.The material of leaded light post and structure have a lot, are not limited thereto mode, in the leaded light post, form total reflection as long as can guarantee infrared light.
As shown in Figure 5; Said infrared emission unit 1 comprises X axle infrared emission unit and Y axle infrared emission unit; Be connected to processing unit MCU after X axle infrared emission unit and the parallel connection of Y axle infrared emission unit; Infrared receiver 2 comprises X axle infrared receiver and Y axle infrared receiver, is connected to processing unit MCU after X axle infrared receiver and the parallel connection of Y axle infrared receiver.
A kind of method that changes the infrared touch panel recognizing touch operation point of infrared light transmission path comprises the steps:
A, be positioned at the infrared light that the infrared emission unit of the non-touch face of touch-screen body sends; Form the infrared ray net through being transferred to touch face after the emission light element change light transmission direction, be transferred to the infrared receiver that is positioned at the non-touch face of touch-screen body through receiving light element again;
B, when touching body and touch, the infrared ray of transmission stopped on touch face, the infrared signal Strength Changes of receiving through infrared receiver confirms to touch the coordinate position of body, thereby to touching the body location.
In the said b step, processing unit MCU confirms to touch the coordinate position of body through infrared receiver being received the situation of change of light signal strength.
Concrete processing procedure is: behind the system initialization, start the infrared emission unit and the infrared receiver of X, Y axle, X, Y axle are carried out infrared scan; Each scanning element touches analysis to received signal, if any touch, then produces the touching position information of X, Y respectively; System processing unit MCU judges whether effective touching position information of scanning element, when not having effective touching position information, returns initialization; When effective touching position information, system processing unit MCU collects effective touch position data of X, Y axle scanning element, is the positional information of true touch point; System processing unit MCU judges whether that the touch point positional information that satisfies condition produces, and returns initialization, when sometimes when not having; Each the touch point coordinates transmission that draws in computer system, is returned initialization then.
The infrared emission unit 1 of infrared touch panel is put in the non-touch face of touch-screen body with infrared receiver 2, thereby reaches the no frame or the effect of little frame.Form the infrared ray nets and will reach the infrared light that this purpose must send the infrared emission unit 1 that is put in the touch-screen side 8 or the back side 7 through the touch face 6 that leaded light or reflection way are directed to the touch-screen body, again on other one side of touch-screen body through same mode with infrared guldance to the infrared receiver 2 at its side 8 or the back side 7.
And the key that will reach above purpose is how the transmission direction of infrared light to be changed, and technical scheme comprises:
1, uses the leaded light post to utilize total reflection principle from the side or the back side is directed to touch face, adopt the side or the back side that is directed to the touch-screen body in a like fashion from touch face again light;
2, use reflective mirror or reflective mirror group from the side or the back side is directed to touch face with light; Adopt the side or the back side that is directed to touch-screen in a like fashion from touch face again;
3, can adopt the array mode of above dual mode, Yi Bian use reflective mode, Yi Bian with leaded light post mode;
Among the present invention, the mode that changes the infrared light transmission path has a lot, is not limited to aforesaid way, and wherein catoptron comprises the catoptron and the catoptron that utilizes total reflection principle of spraying reflection material.
The present invention is installed in the back side or the side of shielding body with the infrared receiver of infrared touch panel and infrared emission unit; Through light guide structure with infrared ray from the screen body of touch screen back side or the side be transferred to the screen body of touch screen front; Thereby above screen body touch face, constitute infrared array, the infrared touch panel of recognizing touch operation body position.Infrared touch panel of the present invention both can reduce the hoverheight of touch-screen, can reach the filtering ambient light again and disturb, and had realized low narrow frame simultaneously.
Claims (10)
1. infrared touch panel that changes the infrared light transmission path; It is characterized in that: be positioned at the infrared light that the infrared emission unit (1) of the non-touch face of touch-screen body sends; Form the infrared ray net through being transferred to touch face (6) after emission light element (3) the change light transmission direction, be transferred to the infrared receiver (2) that is positioned at the non-touch face of touch-screen body through receiving after light element (4) changes the light transmission direction again.
2. the infrared touch panel of change infrared light transmission path according to claim 1 is characterized in that: said emission light element (3) and reception light element (4) are the combination of leaded light post, reflective mirror or leaded light post and reflective mirror.
3. the infrared touch panel of change infrared light transmission path according to claim 2; It is characterized in that: when said emission light element (3) and reception light element (4) are the leaded light post; The infrared light that infrared emission unit (1) sends; Entering emission light element (3) portion within it is transferred to touch face (6) after changing the light transmission direction, and entering is transferred to the infrared receiver (2) that is positioned at the non-touch face of touch-screen body after receiving light element (4) portion's change within it light transmission direction again.
4. the infrared touch panel of change infrared light transmission path according to claim 2; It is characterized in that: said emission light element (3) and reception light element (4) are when being reflective mirror; The infrared light that infrared emission unit sends; Get into and to be transferred to touch face (6) after emission light element (3) changes the light transmission direction through reflection way, get into again to receive and be transferred to the infrared receiver (2) that is positioned at the non-touch face of touch-screen body after the mode of light element (4) through surface reflection changes the light transmission direction.
5. the infrared touch panel of change infrared light transmission path according to claim 2; It is characterized in that: said emission light element (3) is the leaded light post; When reception light element (4) is reflective mirror; The infrared light that infrared emission unit (1) sends; Be transferred to touch face (6) after getting into emission light element (3) portion's change within it light transmission direction, get into again and be transferred to the infrared receiver (2) that is positioned at the non-touch face of touch-screen body after reception light element (4) changes the light transmission direction through reflection way.
6. the infrared touch panel of change infrared light transmission path according to claim 2; It is characterized in that: said emission light element (3) is a reflective mirror; When reception light element (4) is the leaded light post; The infrared light that infrared emission unit (1) sends; Entering emission light element (3) is transferred to touch face (5) after changing the light transmission direction through reflection way, and entering is transferred to the infrared receiver (2) that is positioned at the non-touch face of touch-screen body after receiving light element (4) portion's change within it light transmission direction again.
7. according to the infrared touch panel of each described change infrared light transmission path in the claim 1-6; It is characterized in that: said screen is touched the back side (7) and side (8) that the non-touch face of screen body comprises the touch-screen body, and infrared emission unit (1) and infrared receiver (2) are arranged on the back side (7) or side (8) of touch-screen body.
8. according to the infrared touch panel of each described change infrared light transmission path in the claim 1-6; It is characterized in that: said screen is touched the back side (7) and side (8) that the non-touch face of screen body comprises the touch-screen body, and infrared emission unit (1) and infrared receiver (2) are arranged on the back side (7) and side (8) of touch-screen body.
9. a method that changes the infrared touch panel recognizing touch operation point of infrared light transmission path is characterized in that, comprises the steps:
A, be positioned at the infrared light that the infrared emission unit of the non-touch face of touch-screen body sends; Form the infrared ray net through being transferred to touch face after the emission light element change light transmission direction, be transferred to the infrared receiver that is positioned at the non-touch face of touch-screen body through receiving light element again;
B, when touching body and touch, the infrared ray of transmission stopped on touch face, the infrared signal Strength Changes of receiving through infrared receiver confirms to touch the coordinate position of body, thereby to touching the body location.
10. the method for the infrared touch panel recognizing touch operation point of change infrared light transmission path according to claim 9; It is characterized in that: in the said b step; Processing unit MCU confirms to touch the coordinate position of body through infrared receiver being received the situation of change of light signal strength.
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| CN2012100394057A CN102622133A (en) | 2012-02-21 | 2012-02-21 | Infrared touch screen for changing infrared light transmission paths and touch point recognizing method for infrared touch screen |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102968223A (en) * | 2012-12-05 | 2013-03-13 | 成都吉锐触摸技术股份有限公司 | Infrared touch screen |
| CN103235670A (en) * | 2013-04-24 | 2013-08-07 | 京东方科技集团股份有限公司 | Infrared touch module, infrared touch screen and 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 |
| CN103558949A (en) * | 2013-11-08 | 2014-02-05 | 创维光电科技(深圳)有限公司 | Infrared touch screen, method and system for suspension touch control |
| WO2014086084A1 (en) * | 2012-12-05 | 2014-06-12 | 成都吉锐触摸技术股份有限公司 | Infrared touch screen |
| CN104679346A (en) * | 2013-11-27 | 2015-06-03 | 昆山特思达电子科技有限公司 | Multi-touch screen based on frustrated total internal reflection technology and method thereof for identifying multi-touch |
| CN105005419A (en) * | 2015-08-04 | 2015-10-28 | 北京汇冠新技术股份有限公司 | Non-contact gesture recognition infrared touch screen |
| CN108139053A (en) * | 2015-09-25 | 2018-06-08 | 黑拉有限责任两合公司 | Headlamp with laser light source, the vehicle with this headlamp and the method for monitoring this headlamp |
| CN110727376A (en) * | 2019-10-24 | 2020-01-24 | 广州视源电子科技股份有限公司 | Touch control display screen |
| CN111538442A (en) * | 2020-05-12 | 2020-08-14 | 成都吉锐时代触摸技术有限公司 | Self-sterilization touch pad |
| CN112667113A (en) * | 2021-02-23 | 2021-04-16 | 中航华东光电有限公司 | High-precision infrared touch screen |
| CN113226077A (en) * | 2019-06-14 | 2021-08-06 | 韩国烟草人参公社 | Optical module and aerosol-generating device comprising an optical module |
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| WO2014086084A1 (en) * | 2012-12-05 | 2014-06-12 | 成都吉锐触摸技术股份有限公司 | Infrared touch screen |
| CN102968223B (en) * | 2012-12-05 | 2015-08-26 | 成都吉锐触摸技术股份有限公司 | Infrared touch panel |
| CN102968223A (en) * | 2012-12-05 | 2013-03-13 | 成都吉锐触摸技术股份有限公司 | Infrared touch screen |
| CN103235670A (en) * | 2013-04-24 | 2013-08-07 | 京东方科技集团股份有限公司 | Infrared touch module, infrared touch screen and display device |
| CN103235670B (en) * | 2013-04-24 | 2016-04-20 | 京东方科技集团股份有限公司 | Infrared touch module, infrared type touch-screen and 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 |
| CN103558949A (en) * | 2013-11-08 | 2014-02-05 | 创维光电科技(深圳)有限公司 | Infrared touch screen, method and system for suspension touch control |
| CN104679346A (en) * | 2013-11-27 | 2015-06-03 | 昆山特思达电子科技有限公司 | Multi-touch screen based on frustrated total internal reflection technology and method thereof for identifying multi-touch |
| CN104679346B (en) * | 2013-11-27 | 2018-03-23 | 江苏特思达电子科技股份有限公司 | A kind of method of multi-point touch panel and its identification multiple point touching based on frustrated total internal reflection technology |
| CN105005419B (en) * | 2015-08-04 | 2024-04-16 | 北京汇冠触摸技术有限公司 | Non-contact gesture recognition infrared touch screen |
| CN105005419A (en) * | 2015-08-04 | 2015-10-28 | 北京汇冠新技术股份有限公司 | Non-contact gesture recognition infrared touch screen |
| CN108139053A (en) * | 2015-09-25 | 2018-06-08 | 黑拉有限责任两合公司 | Headlamp with laser light source, the vehicle with this headlamp and the method for monitoring this headlamp |
| CN108139053B (en) * | 2015-09-25 | 2021-06-04 | 黑拉有限责任两合公司 | Headlight with a laser light source, vehicle with such a headlight and method for monitoring such a headlight |
| CN113226077A (en) * | 2019-06-14 | 2021-08-06 | 韩国烟草人参公社 | Optical module and aerosol-generating device comprising an optical module |
| CN113226077B (en) * | 2019-06-14 | 2024-03-15 | 韩国烟草人参公社 | Optical module and aerosol-generating device comprising an optical module |
| US11944129B2 (en) | 2019-06-14 | 2024-04-02 | Kt&G Corporation | Optical module and aerosol generating device including the same |
| CN110727376A (en) * | 2019-10-24 | 2020-01-24 | 广州视源电子科技股份有限公司 | Touch control display screen |
| CN111538442A (en) * | 2020-05-12 | 2020-08-14 | 成都吉锐时代触摸技术有限公司 | Self-sterilization touch pad |
| CN112667113A (en) * | 2021-02-23 | 2021-04-16 | 中航华东光电有限公司 | High-precision infrared touch screen |
| CN112667113B (en) * | 2021-02-23 | 2023-02-10 | 中航华东光电有限公司 | High-precision infrared touch screen |
| CN113608661A (en) * | 2021-05-12 | 2021-11-05 | 广州创知科技有限公司 | Man-machine interaction method, interaction panel and storage medium thereof |
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