CN210006018U - Touch control light pen and projection system - Google Patents
Touch control light pen and projection system Download PDFInfo
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- CN210006018U CN210006018U CN201921027966.9U CN201921027966U CN210006018U CN 210006018 U CN210006018 U CN 210006018U CN 201921027966 U CN201921027966 U CN 201921027966U CN 210006018 U CN210006018 U CN 210006018U
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
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- General Physics & Mathematics (AREA)
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- Signal Processing (AREA)
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Abstract
The utility model provides an touch-control light pen, its including the light pen body that has accommodating space, set up the touch-control light source in accommodating space and set up in the printing opacity piece of light pen body, the light beam is thrown to the printing opacity piece to the touch-control light source, touch-control light pen is still including installing the light-emitting adjusting part between touch-control light source and printing opacity piece, and the light-emitting adjusting part adjusts the light beam through the light-emitting area size of printing opacity piece according to the pressure size that the printing opacity piece received the utility model discloses still provide projection system, it includes the screen, image acquisition and processing system and touch-control light pen, touch-control light pen includes the light-emitting adjusting part, produces the contact force between touch-control light pen and the screen, and the light-emitting area of light beam is adjusted under the effect of contact force to the light-emitting adjusting part, and processing system acquire the light-emitting area to according to the touch-control instruction is generated to light-emitting area compare with relevant technique, the touch-control light pen is convenient for adjust.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to an optics projection field especially relates to kinds of touch-control light pens and projection system.
[ background of the invention ]
Along with the continuous expansion of the application field of projectors, the friendly and convenient interaction requirements are increased day by day, the traditional interaction mode is realized by remote control, a mouse or a special electronic whiteboard with an infrared transmitter and a receiver, and the like, which is not very convenient for application scenes with large size and large space.
A touch system of the related art includes a screen, a projector for projecting a picture onto the screen, a camera for acquiring the picture, a computer for processing the picture, and a touch member for touch control.
However, in the related art, problems of erroneous touch, insensitive sensing and the like often occur, and the touch reliability of the front projection touch system is greatly reduced.
Therefore, it is necessary to provide new touch-control light pen and projection system to solve the above-mentioned technical problems.
[ Utility model ] content
An object of the utility model is to provide a be convenient for adjust the high projection system of touch-control light pen and touch-control reliability of light-emitting area.
In order to achieve the above object, the utility model provides an touch-control light pen, its including have accommodating space the light pen body, set up in touch-control light source in the accommodating space and set up in the printing opacity piece of light pen body, touch-control light source to the light beam is thrown to the printing opacity piece, a serial communication port, touch-control light pen still including install in touch-control light source with light-emitting adjusting part between the printing opacity piece, light-emitting adjusting part basis the pressure size that the printing opacity piece received is adjusted the light beam warp the light-emitting area size of printing opacity piece.
Preferably, the light emitting adjusting assembly comprises a light-tight elastic sheet and a stretchable light transmitting sheet, the outer periphery of the elastic sheet is fixed to the light pen body, the inner periphery of the elastic sheet is connected with the stretchable light transmitting sheet, the side, far away from the elastic sheet, of the stretchable light transmitting sheet is connected with the light transmitting sheet, light beams penetrate through the inner periphery of the elastic sheet and are emitted through the light transmitting sheet, an included angle is formed between the stretchable light transmitting sheet and the light emitting direction of the touch control light source, and the size of the included angle is adjusted through pressure to adjust the area of the inner periphery of the elastic sheet.
Preferably, the printing opacity piece is made for elastic material, and pressure makes the printing opacity piece produces deformation, in order to drive but the shrink of expansion printing opacity piece or expand so that the contained angle reduces or increases, thereby adjusts the reduction or the increase of the interior circumference area of elastic sheet.
Preferably, the geometric center of the expandable light-transmitting sheet is connected to the geometric center of the light-transmitting sheet.
Preferably, the light-emitting adjusting assembly comprises a pressure sensor and a diaphragm, the pressure sensor is fixed on the light-transmitting sheet, and the diaphragm is fixed on the light pen body; the diaphragm is provided with a light through hole, and the light beam penetrates through the light through hole and is projected on the light-transmitting sheet; the pressure sensor senses the pressure applied to the light-transmitting sheet and generates a pressure signal, and the size of the light-transmitting hole of the diaphragm is adjusted according to the pressure signal.
Preferably, the light pen body includes th and second light pen body parts connected to each other, the touch light source is disposed on the th light pen body part, the light transmitting sheet is disposed on the second light pen body part, the light output adjusting assembly includes th convex lens fixed to the th light pen body part and a second convex lens fixed to the second light pen body part, the th convex lens and the second convex lens are spaced apart from each other and disposed opposite to each other, and the light transmitting sheet is pressed to allow the th light pen body part and the second light pen body part to move relatively to adjust a distance between the th convex lens and the second convex lens, thereby adjusting an area size of a light beam converged on the light transmitting sheet.
Preferably, the elastic member is a coil spring.
The utility model provides kinds of projection system, it includes that screen and image acquisition and processing system, a serial communication port, projection system still includes the touch-control light pen, the touch-control light pen includes the light-emitting adjusting part, the touch-control light pen with produce the contact force between the screen, the light-emitting adjusting part is in the area of light-emitting of regulating beam under the effect of contact force, image acquisition and processing system acquire the area of light-emitting, and according to the area of light-emitting generates the touch-control instruction.
Preferably, the projection system further includes a projector installed on a back side of the screen to implement back projection, and when the touch light pen is in contact with the screen, the touch light pen projects the touch light from a front side of the screen toward the screen; the image acquisition and processing system comprises a camera and a computer electrically connected with the camera, and the camera is arranged on the back side of the screen and used for acquiring the image displayed by the screen.
Compared with the prior art, the touch control light pen comprises a light pen body with an accommodating space, a touch control light source arranged in the accommodating space, a light transmitting sheet arranged on the light pen body and a light emitting adjusting component, wherein the touch control light source projects light beams to the light transmitting sheet; the light-emitting adjusting component is arranged between the touch control light source and the light-transmitting sheet, the light-emitting adjusting component adjusts the light beam according to the pressure of the light-transmitting sheet, the light-emitting area of the light-transmitting sheet is adjusted, the force of the light-transmitting sheet can be controlled by controlling the light-emitting area of the touch control light pen, and therefore the touch control light pen is convenient to adjust the light-emitting area. The utility model discloses a projection system throws the light-emitting area of the light beam at the screen according to the touch-control light pen and generates touch-control instruction, and the adjustment of the light-emitting area of light beam needs to be pressed through the adjustment the realization of the dynamics of touch-control light pen has avoided the mistake effectively to touch, has touched and responded to insensitive scheduling problem, makes projection system touch-control reliability is high.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts, wherein:
fig. 1 is a schematic structural diagram of a touch-control light pen according to an embodiment of the present invention in an initial state;
fig. 2 is a schematic structural diagram of a touch-control light pen according to an embodiment of the present invention in a pressed state;
fig. 3 is a schematic structural diagram of a stylus according to an embodiment of the present invention in a maximum pressing state;
fig. 4 is a schematic structural diagram of a second embodiment of a touch-control light pen according to the present invention;
fig. 5 is a schematic structural diagram of a third embodiment of a touch-control light pen according to the present invention;
fig. 6 is a schematic structural diagram of the projection system of the present invention.
[ detailed description ] embodiments
The technical solution in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only partial embodiments of the present invention, rather than all embodiments.
The utility model provides an touch-control light pen, it includes light pen body, touch-control light source, printing opacity piece and light-emitting adjusting part.
The light pen comprises a light pen body and a light transmitting sheet, wherein the light pen body is provided with an accommodating space, a touch light source is arranged in the accommodating space, the light transmitting sheet is arranged on the light pen body, specifically, the touch light source is fixed at the end of the light pen body, the light transmitting sheet is fixed at the other end of the light pen body, and the light outlet adjusting component is arranged between the touch light source and the light transmitting sheet.
The touch light source to the printing opacity piece throws the light beam, the light beam can be visible light or invisible light, the light beam sees through in proper order the light-emitting adjusting part with the printing opacity piece is outwards thrown.
It is worth to mention that the light pen body is body structure, also can be a split structure, it can be specific to set up according to the needs of the application.
And , the light-emitting adjusting component can be connected with the light-transmitting sheet or can be arranged at intervals with the light-transmitting sheet, and the specific position relationship and the connection relationship between the light-emitting adjusting component and the light-transmitting sheet can be specifically set according to practical application, wherein the interval arrangement means the distance arrangement of intervals.
In the structure, the light beam firstly irradiates the light-emitting adjusting assembly, the light-emitting adjusting assembly adjusts the light beam to pass through the light-emitting area of the light-transmitting sheet according to the pressure applied to the light-transmitting sheet, so that the pressing force of the light-transmitting sheet can be controlled to control the light-emitting area of the light beam projected outwards.
In practice, the structural form of the light-emitting adjusting component has various optional embodiments, and for convenience of understanding the principle that the light-emitting adjusting component controls the light-emitting area of the light beam, three optional embodiments are given below for explanation:
embodiment
Referring to fig. 1-3, a touch control light source 2 is disposed in a touch control light pen body 1, a light-transmitting sheet 3 forms a pen point portion of the touch control light pen 100, a light-emitting adjusting component 4 is located in a light path of a light beam emitted by the touch control light source 2, and the light beam is adjusted by the light-emitting adjusting component 4 and then emitted from the light-transmitting sheet 3.
In this embodiment, the light exit adjusting assembly 4 includes a light-tight elastic sheet 41 and a stretchable light-transmitting sheet 42, an outer periphery of the elastic sheet 41 is fixed inside the light pen body 1, an inner periphery of the elastic sheet 41 is connected to the stretchable light-transmitting sheet 42, an side of the stretchable light-transmitting sheet 42, which is far away from the elastic sheet 41, is connected to the light-transmitting sheet 3, and a geometric center of the stretchable light-transmitting sheet 42 is connected to a geometric center of the light-transmitting sheet 3 in step .
, the transparent sheet 42 that can open is the back taper structure, the transparent sheet 42 that can open and close with the light-emitting direction of touch light source 2 forms contained angle α, presses through the adjustment the pressure of transparent sheet 3 is in order to adjust contained angle α, thereby adjusts the state of opening and closing of the transparent sheet 42 that can open and close.
Further , the light-transmitting sheet 3 is made of elastic material, and is deformed by pressure to drive the extendable light-transmitting sheet 42 to retract or extend so as to reduce or increase the included angle α, thereby adjusting the reduction or increase of the inner peripheral area of the elastic sheet 41.
In the above structure, the light beam penetrates through the inner periphery of the elastic sheet 41, then passes through the extendable transparent sheet 42, is projected onto the transparent sheet 3, and is emitted through the transparent sheet 3, and the extendable transparent sheet 42 can be controlled to be in different extension states, so that the area of the inner periphery of the elastic sheet 41 is changed within the range of , and further the light flux penetrating through the inner periphery is changed.
, the adjustment range of the included angle α can be specifically set according to the actual use, for example, in the embodiment , in order to increase the adjustment range of the light-emitting area of the light beam by the light-emitting adjustment assembly 4, the included angle α is preferably in the range of 0 to 90 degrees.
As an alternative of this embodiment , the initial area of the inner peripheral edge of the elastic sheet 41 may be 0 in the natural state (in the case where no pressing force is applied), that is, in the unused state, no light beam is emitted even if the touch light source 2 is turned on, and only when the user presses it against a touch object such as a screen, a light beam is emitted.
Before the description, it should be noted that the elastic sheet 41 is made of a light shielding material, the light irradiated on the elastic sheet 41 is absorbed, and a condition for the elastic sheet 41 to shield the light beam is provided, the accommodating space is divided into an th light cavity 101 and a second light cavity 102 by the elastic sheet 41, the touch control light source 2 is located in the th light cavity 101, the light beam generated by the touch control light source 2 fills the entire th light cavity 101, and the light transmitting sheet 3 and the foldable light transmitting sheet 42 are located in the second light cavity 102.
When the touch control light pen 100 is in an initial state, the light transmitting sheet 3 is not pressed on a pressing plane, the retractable light transmitting sheet 42 is completely closed, the included angle α is 0 °, and the elastic sheet 41 is closed along with the retractable light transmitting sheet 42, at this time, the area of the inner periphery of the elastic sheet 41 is 0, the elastic sheet 41 completely separates the optical cavity 101 from the second optical cavity 102, and the light beam in the optical cavity 101 is completely shielded by the elastic sheet 41, that is, no light beam is projected outward.
When the light transmitting sheet 3 is pressed on the pressing plane, the light transmitting sheet 3 is elastically deformed to drive the extendable light transmitting sheet 42 to move so as to open light transmitting channels 410, when the pressing force continuously increases, the extendable light transmitting sheet 42 is continuously extended towards the direction close to the light pen body 1 so as to drive the elastic sheet 41 to continuously contract, the included angle α is continuously increased, the light transmitting channels 410 are increased, when the pressing force continuously decreases, the extendable light transmitting sheet 42 is continuously retracted towards the direction far away from the light pen body 1 so as to drive the elastic sheet 41 to continuously expand, the included angle α is continuously decreased, the light transmitting channels 410 are decreased, and part of the light beam enters the second light cavity 102 through the light transmitting channels 410 and is projected outwards through the extendable light transmitting sheet 42 and the light transmitting sheet 3 in sequence.
When the light-transmitting sheet 3 is pressed to be parallel to the pressing plane, the light-transmitting sheet 3 reaches the maximum pressing state, the included angle α is 90 degrees, at this time, the retractable light-transmitting sheet 42 abuts against the light-transmitting sheet 3, and the elastic member 41 reaches the maximum compressed state, so that the area of the inner circumference of the elastic sheet 41 is maximized, that is, the light-transmitting channel 410 is maximized, and the light-emitting area of the light beam projected outwards reaches the maximum value.
In the structure, press the dynamics of printing opacity piece 3 to pressing the plane through the control in order to control contained angle α's angle size to control printing opacity passageway 410's size, and then the adjustment the light beam sees through the transmission capacity of light-emitting adjusting part 4, the effective control is outwards thrown the light-emitting area of light beam, in order to adjust luminous flux.
Of course, in addition to setting the area of the inner peripheral edge of the elastic sheet to 0 in advance, as a second alternative of the embodiment , in a natural state (when no pressing force is applied), the initial area of the inner peripheral edge of the elastic sheet may be set to a threshold value , which is greater than 0, that is, when the elastic sheet is not pressed, the area of the inner peripheral edge of the elastic sheet is the set threshold value, the size of the light spot in the initial state is defined, and the principle of adjusting the light emitting area by the second alternative is the same as the principle of adjusting the light emitting area by the alternative described above, which is not described herein again.
Second embodiment
Referring to fig. 4, the light-emitting adjusting assembly 4a includes a pressure sensor 41a, a diaphragm controller 42a and a diaphragm 43a, the pressure sensor 41a is fixed to the transparent sheet 3, the diaphragm controller 42a is fixed to the stylus body 1, and the diaphragm 43a is fixed to the stylus body 1.
It is worth to mention that the position of the pressure sensor is not limited, and in order to ensure that the pressure sensor can sense the pressure of the light-transmitting sheet more sensitively, in the second embodiment, the pressure sensor 41a is disposed at the geometric center of the light-transmitting sheet 3.
In this embodiment, the diaphragm 43a divides the accommodating space 10a into an th optical cavity 101a and a second optical cavity 102a, the touch control light source 2 is located in the th optical cavity 101a, the entire th optical cavity 101a is filled with light beams generated by the touch control light source 2, the diaphragm 43a has a light passing hole 430a, the th optical cavity 101a is communicated with the second optical cavity 102a through the light passing hole 430a, and the light beams are projected on the light-transmitting sheet 3 through the light passing hole 430 a.
As an alternative of the second embodiment, when the stylus pen 100a is in the initial state, the light-transmitting sheet 3 is not pressed on the pressing plane, the pressure sensor 41a has no pressure signal, and at this time, the diaphragm 43a is completely closed, that is, the light-transmitting hole 430a is completely closed, the aperture of the light-transmitting hole 430a is 0, and the light beam in the th optical cavity 101a is completely shielded by the diaphragm 43a, that is, no light beam is projected outward.
When the light-transmitting sheet 3 is pressed on the pressing plane, the pressure sensor 41a collects a pressure signal of the light-transmitting sheet 3 and transmits the pressure signal to the diaphragm controller 42a, the diaphragm controller 42a controls the diaphragm 43a to open the light-transmitting hole 430a according to the pressure signal, a part of the light beam in the th light cavity 101a enters the second light cavity 102a through the light-transmitting hole 430a and is projected outwards through the light-transmitting sheet 3, the larger the pressing force on the light-transmitting sheet 3 is, the larger the aperture of the light-transmitting hole 430a is, the larger the light-emitting area of the light beam passing through the diaphragm 43a is, that is, the luminous flux is increased, the emergent light spot is increased, and conversely, the smaller the pressing force on the light-transmitting sheet 3 is, the smaller the light-emitting area is smiled, the luminous flux is reduced, and the light spot is decreased.
In the above structure, the pressure sensor 41a senses the pressure applied to the light-transmitting plate 3 and generates a pressure signal to be transmitted to the diaphragm controller 42a, and the diaphragm controller 42a adjusts the aperture size of the light-transmitting hole 430a of the diaphragm 43a according to the received pressure signal, so as to adjust the transmission amount of the light beam passing through the light-emitting adjusting assembly 4, and effectively control the light-emitting area of the light beam projected outward.
Of course, in addition to setting the aperture of the clear hole to 0 in advance, as a second alternative of the second embodiment, in a natural state (when no pressing force is applied), the aperture of the clear hole may be set to , which is greater than 0, that is, when the clear hole is not pressed, the aperture of the clear hole is set to the set threshold, so as to limit the size of the light spot in the initial state, and the principle of the second alternative for adjusting the light emitting area is the same as the principle of the second alternative for adjusting the light emitting area, which is not described herein again, and when the user presses the clear hole to a touch object such as a screen, the larger the pressing force is, the larger the light emitting area is, so that the generated light spot is larger.
Third embodiment
Referring to fig. 5, in the present embodiment, the light pen body 1b includes a th light pen body 11b and a second light pen body 12b that are disposed at an interval, the touch control light source 2 is disposed on the th light pen body 11b, the light-transmitting sheet 3 is disposed on the second light pen body 12b, and the light-emitting adjusting component 4b is disposed between the th light pen body 11b and the second light pen body 12 b.
The light emitting adjusting assembly 4b comprises an th convex lens 41b and a second convex lens 42b which are connected with each other, the th convex lens 41b is fixed on the th light pen body part 11b, and the second convex lens 42b and the th convex lens 41b are arranged in a mutually spaced and opposite mode.
In this embodiment, the light exit adjusting assembly 4b divides the accommodating space 10b into a th light cavity 101b, a second light cavity 102b and a third light cavity 103b, the th light cavity 101b is located between the th convex lens 41b and the touch control light source 2, the light beam generated by the touch control light source 2 fills the entire th light cavity 101b, the second light cavity 102b is located between the th convex lens 41b and the second convex lens 42b, and the third light cavity 103b is located between the second convex lens 42b and the light transmissive sheet 3.
convex lens 41b with second convex lens 42b has the function of light polymerization respectively, and step , convex lens 41b with second convex lens 42b all follow touch-control light source 2's light-emitting direction orientation the printing opacity piece 3 is protruding, when touch-control light source 2 is opened, be in the light beam of optical cavity 101b sees through take place the light polymerization of times when convex lens 41b, and the light beam after the light polymerization of times gets into see through after the second optical cavity 102b see through take place the light polymerization of second time when second convex lens 42b, the light beam after the light polymerization of second time gets into third optical cavity 103b, and see through the printing opacity piece 3 is outwards thrown.
In the above configuration, the light transmitting sheet 3 is pressed against the pressing plane, so that the th light pen main body 11b and the second light pen main body 12b move relatively to each other, thereby adjusting the distance between the th convex lens 41b and the second convex lens 42b, and further adjusting the area of the light beam converged on the light transmitting sheet 3.
Further , in order to facilitate the adjustment of the distance between the convex lens 41b and the second convex lens 42b, it is preferable that the light emitting adjustment assembly 4b further includes an elastic member 43b disposed between the th light pen body 11b and the second light pen body 12b, and specifically, two ends of the elastic member 43b are respectively connected to the th light pen body 11b and the second light pen body 12 b.
The elastic member 43b is a coil spring, and when the end of the light transmitting sheet 3 is pressed, the elastic member 43b contracts, and when the pressing force is larger, the contraction amount of the elastic member 43b is larger, and the distance between the th convex lens 41b and the second convex lens 42b is shorter, the light emitting area of the light beam projected outward is larger, and conversely, when the pressing force is smaller, the light emitting area of the light beam projected outward is smaller.
Through the arrangement of the elastic piece 43b, the light-transmitting piece 3 is stressed and deforms the elastic piece 43b to control the relative movement between the -th light pen body part 11b and the second light pen body part 12b by pressing the light-transmitting piece 3 on the pressing plane, so as to adjust the distance between the -th convex lens 41b and the second convex lens 42b, and in practical application, the distance between the -th convex lens 41b and the second convex lens 42b is adjusted by the force of the light-transmitting piece 3 pressing on the pressing plane, so that the area of the light beam converged on the light-transmitting piece 3 is changed, and the convenience of operation of the touch control light pen 100b and the flexibility of adjustment of the light-emitting area are effectively improved.
It should be noted that, the touch control light pen of the above three embodiments can adjust the light emitting area of the light beam projected outward by controlling the pressing force of the light transmissive sheet, so that the touch control light pen is convenient to adjust the light emitting area, and the touch control light pen is convenient to use and has good use experience.
Referring to fig. 6, the present invention further provides kinds of projection systems 200, which include a screen 5, an image acquisition and processing system 6, a touch-control light pen 100 and a projector 7.
When the touch light pen 100 contacts the screen 5, the screen 5 serves as a pressing plane of the touch light pen 100, a contact force is generated between the touch light pen 100 and the screen 5, and the touch light pen 100 projects the light beam from the front side of the screen 5 toward the screen 5; the light emitting adjusting component of the touch control light pen 100 adjusts the light emitting area of the light beam under the action of the contact force, and the image acquiring and processing system 6 acquires the light emitting area and generates a touch control instruction according to the light emitting area.
The projector 7 is arranged on the back side of the screen 5 and used for realizing back projection of the image acquisition and processing system 6, and comprises a camera 61 and a computer 62 electrically connected with the camera 61, wherein the camera 61 is arranged on the back side of the screen 5; the camera 61 serves as an image acquiring device for acquiring an image displayed on the screen 5, and the computer 62 serves as an image processing device for analyzing and processing the image through positioning touch software and performing a touch response function according to the analysis result.
For ease of understanding, the working principle of the projection system 200 is explained below:
in the present embodiment, the projector 7 is electrically connected to the computer 62 and projects a display screen onto the screen 5 from the back side of the screen 5; the touch-control light pen 100 presses the screen 5 from the front side of the screen 5, and projects a light beam to the screen 5 from the front side, and the light beam projects to generate a light spot on the screen 5; the camera 61 is electrically connected to the computer, and acquires an image with light spots in a display area (i.e., the display area of the screen 5) from the back side of the screen 5, and then sends the image to the computer 62, and the computer 62 analyzes the center coordinates, the area size, the dwell time, and the like of the light spots in the image, and performs a plurality of touch response functions such as mouse clicking, brush writing, and the like according to the analysis result.
It should be noted that, before the camera 61 acquires the light spot image, the camera 61 needs to calibrate the screen 5 to be detected, and calibration can be implemented in two forms, namely automatic calibration and manual calibration, where:
and automatically calibrating, namely adopting a checkerboard or circular grid method, drilling checkerboard or circular grid with regular shape on the screen 5, using the camera 61 to obtain the image of the screen 5, and after automatically detecting the checkerboard corner points or circle centers meeting the specified quantity and distribution by the computer 62, calculating and obtaining the camera shooting parameters of the camera 61 and the matrix parameters of perspective transformation to complete calibration.
Manually calibrating, namely, by gradually marking squares or circles with known distribution on the screen 5, after a user clicks all correct positions with the touch control light pen 100, calculating to obtain the shooting parameters of the camera 61 and the matrix parameters of perspective transformation, and completing calibration.
Further , during use, the user may select either the mouse mode or the brush mode:
in the mouse mode, the computer 62 needs to acquire coordinates and dwell time of the light spots in the image to perform left click, slide, double click, right click, and other functions.
In the brush mode, the computer 62 needs not only the coordinates and the dwell time of the light spot in the image, but also the area of the light spot to be analyzed to complete more operation functions, specifically, in the maximum light spot area, long pressing is switched to the eraser/writing mode; switching long pressing into a painting brush type under a small light spot writing mode; in the writing or eraser mode, the larger the light spot, the thicker the handwriting or the larger the eraser erasing surface.
In the above structure, the projector 7 and the camera 61 are both located on the back side of the screen 5, so that the light spots can be effectively prevented from being shielded by a user body or other objects during the touch use process, meanwhile, the interference of external illumination is avoided, the problems of false touch, insensitive induction and the like are greatly reduced, and the reliability of the projection system 200 is high; in addition, in practical application, the projector 7 and the camera 61 are installed on the back side of the screen 5, and after the projector and the camera are installed, the positions of the projector and the camera cannot be moved due to the influence of external factors, so that the situation of repeated calibration in the using process is avoided, the accuracy and the sensitivity of touch control are high, and the operation experience of a user is guaranteed.
It should be noted that the positional relationship between the projector and the camera is not limited, for example, in this embodiment, as shown in fig. 6, the projector 7 and the camera 61 are separately installed on the back side of the screen 5, and certainly, in order to improve the stability of installing the projector and the camera in step , the camera may be embedded in the projector, so that the camera and the projector are in a body structure, thereby effectively improving the accuracy of the camera in calibrating the image of the screen, ensuring the reliability of the projection system, and improving the accuracy and the sensitivity of touch control in step .
, in the above structure, when the touch light pen 100 is applied to the projection system 200, a touch instruction is generated according to the light emitting area of the light beam projected on the screen 5 by the touch light pen 100, and the adjustment of the light emitting area of the light beam needs to be realized by adjusting the force for pressing the touch light pen 100, so that the problems of erroneous touch, insensitive induction and the like are effectively avoided, and the projection system has high touch reliability, meanwhile, through the control of the degree of pressing, a user can draw lines with different thicknesses and better conforming to writing habits or generate eraser erasures with different ranges, and meanwhile, the mode switching of the brush can be completed by matching with the pressing time, so that the touch of the projection system 200 is more convenient, and the user experience is better.
Compared with the prior art, the touch control light pen comprises a light pen body with an accommodating space, a touch control light source arranged in the accommodating space, a light transmitting sheet arranged on the light pen body and a light emitting adjusting component, wherein the touch control light source projects light beams to the light transmitting sheet; the light-emitting adjusting component is arranged between the touch control light source and the light-transmitting sheet, the light-emitting adjusting component adjusts the light beam according to the pressure of the light-transmitting sheet, the light-emitting area of the light-transmitting sheet is adjusted, the force of the light-transmitting sheet can be controlled by controlling the light-emitting area of the touch control light pen, and therefore the touch control light pen is convenient to adjust the light-emitting area. The utility model discloses a projection system throws the light-emitting area of the light beam at the screen according to the touch-control light pen and generates touch-control instruction, and the adjustment of the light-emitting area of light beam needs to be pressed through the adjustment the realization of the dynamics of touch-control light pen has avoided the mistake effectively to touch, has touched and responded to insensitive scheduling problem, makes projection system touch-control reliability is high.
The above embodiments of the present invention are only described, and it should be noted that, for those skilled in the art, modifications can be made without departing from the inventive concept, but these all fall into the protection scope of the present invention.
Claims (10)
1, kind of touch-control light pen, its including have accommodating space the light pen body, set up in touch-control light source in the accommodating space and set up in the printing opacity piece of light pen body, touch-control light source to the printing opacity piece throws the light beam, its characterized in that, touch-control light pen is still including install in touch-control light source with the light-emitting regulating module between the printing opacity piece, the light-emitting regulating module basis the pressure size that the printing opacity piece received adjusts the light beam warp the light-emitting area size of printing opacity piece.
2. The touch control light pen according to claim 1, wherein the light emitting adjusting assembly comprises a light-tight elastic sheet and a stretchable light-transmitting sheet, the outer periphery of the elastic sheet is fixed to the light pen body, the inner periphery of the elastic sheet is connected with the stretchable light-transmitting sheet, the side of the stretchable light-transmitting sheet, which is far away from the elastic sheet, is connected with the light-transmitting sheet, the light beam penetrates through the inner periphery of the elastic sheet and is emitted through the light-transmitting sheet, an included angle is formed between the stretchable light-transmitting sheet and the light emitting direction of the touch control light source, and the size of the included angle is adjusted through pressure so as to adjust the area of the inner periphery of the elastic sheet.
3. The stylus according to claim 2, wherein the transparent sheet is made of an elastic material, and the pressure deforms the transparent sheet to drive the stretchable transparent sheet to contract or expand so as to decrease or increase the included angle, thereby adjusting the decrease or increase of the inner peripheral area of the elastic sheet.
4. The stylus of claim 3, wherein the geometric center of the retractable light transmissive sheet is connected to the geometric center of the light transmissive sheet.
5. The touch-control light pen according to claim 1, wherein the light-emitting adjusting component comprises a pressure sensor and a diaphragm, the pressure sensor is fixed on the light-transmitting sheet, and the diaphragm is fixed on the light pen body; the diaphragm is provided with a light through hole, and the light beam penetrates through the light through hole and is projected on the light-transmitting sheet; the pressure sensor senses the pressure applied to the light-transmitting sheet and generates a pressure signal, and the size of the light-transmitting hole of the diaphragm is adjusted according to the pressure signal.
6. The touch light pen of claim 1, wherein the light pen body comprises th and second light pen body parts connected to each other, the touch light source is disposed on the th light pen body part, the transparent sheet is disposed on the second light pen body part, the light-emitting adjusting assembly comprises a th convex lens fixed to the th light pen body part and a second convex lens fixed to the second light pen body part, the th convex lens and the second convex lens are spaced apart and opposite to each other, and the transparent sheet is pressed to move the th and second light pen body parts relative to each other to adjust a distance between the th and second convex lenses, thereby adjusting an area size of the light beam converged on the transparent sheet.
7. The touch-control light pen of claim 6, wherein the light-emitting adjusting assembly further comprises an elastic member having two ends respectively connected to the th light pen body and the second light pen body, the transparent sheet is stressed and deforms the elastic member to control the relative movement between the th light pen body and the second light pen body, so as to adjust the distance between the th convex lens and the second convex lens.
8. The stylus of claim 7, wherein the resilient member is a coil spring.
9, kinds of projection system, it includes screen and image acquisition and processing system, its characterized in that, projection system still includes the touch-control light pen, the touch-control light pen includes the light-emitting and adjusts the subassembly, the touch-control light pen with produce the contact force between the screen, the light-emitting adjusts the subassembly and is in the area of light-emitting of regulating beam under the effect of contact force, image acquisition and processing system acquire the area of light-emitting, and the basis the area of light-emitting generates touch-control instruction.
10. The projection system of claim 9, further comprising a projector mounted on a back side of the screen for performing rear projection, wherein the touch light pen projects the touch light from a front side of the screen toward the screen when the touch light pen is in contact with the screen; the image acquisition and processing system comprises a camera and a computer electrically connected with the camera, and the camera is arranged on the back side of the screen and used for acquiring the image displayed by the screen.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921027966.9U CN210006018U (en) | 2019-07-03 | 2019-07-03 | Touch control light pen and projection system |
| PCT/CN2020/098487 WO2021000795A1 (en) | 2019-07-03 | 2020-06-28 | Light stylus and projection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921027966.9U CN210006018U (en) | 2019-07-03 | 2019-07-03 | Touch control light pen and projection system |
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| CN210006018U true CN210006018U (en) | 2020-01-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921027966.9U Active CN210006018U (en) | 2019-07-03 | 2019-07-03 | Touch control light pen and projection system |
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| Country | Link |
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| CN (1) | CN210006018U (en) |
| WO (1) | WO2021000795A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111522474A (en) * | 2020-04-20 | 2020-08-11 | 歌尔光学科技有限公司 | Touch structure and touch system |
| WO2021000795A1 (en) * | 2019-07-03 | 2021-01-07 | 深圳光峰科技股份有限公司 | Light stylus and projection system |
| CN113848659A (en) * | 2021-09-26 | 2021-12-28 | 京东方科技集团股份有限公司 | Optical erasing assembly, writing system and control method thereof |
| CN113885720A (en) * | 2021-10-13 | 2022-01-04 | Tcl华星光电技术有限公司 | Touch generator, optical touch system and touch method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101963871A (en) * | 2010-10-21 | 2011-02-02 | 广州视源电子科技有限公司 | Optical touch control system based on infrared spotlight recognition and realization method thereof |
| WO2012142254A2 (en) * | 2011-04-15 | 2012-10-18 | Saint Louis University | Input device |
| TWI463353B (en) * | 2012-09-28 | 2014-12-01 | Au Optronics Corp | Touch pen |
| CN102999188A (en) * | 2013-01-06 | 2013-03-27 | 友达光电股份有限公司 | Optical input device for touch panel |
| CN210006018U (en) * | 2019-07-03 | 2020-01-31 | 深圳光峰科技股份有限公司 | Touch control light pen and projection system |
-
2019
- 2019-07-03 CN CN201921027966.9U patent/CN210006018U/en active Active
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2020
- 2020-06-28 WO PCT/CN2020/098487 patent/WO2021000795A1/en active Application Filing
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021000795A1 (en) * | 2019-07-03 | 2021-01-07 | 深圳光峰科技股份有限公司 | Light stylus and projection system |
| CN111522474A (en) * | 2020-04-20 | 2020-08-11 | 歌尔光学科技有限公司 | Touch structure and touch system |
| CN111522474B (en) * | 2020-04-20 | 2023-11-07 | 歌尔光学科技有限公司 | Touch structure and touch system |
| CN113848659A (en) * | 2021-09-26 | 2021-12-28 | 京东方科技集团股份有限公司 | Optical erasing assembly, writing system and control method thereof |
| CN113848659B (en) * | 2021-09-26 | 2023-11-10 | 京东方科技集团股份有限公司 | Optical erasing assembly, writing system and control method thereof |
| CN113885720A (en) * | 2021-10-13 | 2022-01-04 | Tcl华星光电技术有限公司 | Touch generator, optical touch system and touch method |
| CN113885720B (en) * | 2021-10-13 | 2024-01-30 | Tcl华星光电技术有限公司 | Touch generator, optical touch system and touch method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021000795A1 (en) | 2021-01-07 |
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