CN109002232B - Anti-interference infrared touch device - Google Patents
Anti-interference infrared touch device Download PDFInfo
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- CN109002232B CN109002232B CN201810910695.5A CN201810910695A CN109002232B CN 109002232 B CN109002232 B CN 109002232B CN 201810910695 A CN201810910695 A CN 201810910695A CN 109002232 B CN109002232 B CN 109002232B
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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
- G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen
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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
- G06F3/0412—Digitisers structurally integrated in a display
-
- 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
- G06F3/0425—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means using a single imaging device like a video camera for tracking the absolute position of a single or a plurality of objects with respect to an imaged reference surface, e.g. video camera imaging a display or a projection screen, a table or a wall surface, on which a computer generated image is displayed or projected
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Switches Operated By Changes In Physical Conditions (AREA)
Abstract
The invention relates to an infrared touch device, in particular to an anti-interference infrared touch device which comprises a projector and an infrared touch instrument, wherein the infrared touch instrument comprises an infrared touch frame, a mounting seat, a telescopic piece and a reflecting piece; the infrared touch control device further comprises a touch control regulation and control module, wherein the touch control regulation and control module is used for controlling the telescopic piece to extend to increase the distance between the infrared touch control frame and the wall surface when dead points exceeding the set number are sensed on the wall surface according to the infrared receiving sensing piece, and controlling the telescopic piece to stop extending until the number of the dead points on the wall surface is equal to or less than the set number. The invention provides an anti-interference infrared touch device which can still ensure the normal operation of an infrared touch instrument under the condition that a plurality of wall surface dead points are found after installation.
Description
Technical Field
The invention relates to an infrared touch device, in particular to an anti-interference infrared touch device.
Background
The touch screen of infrared technology is composed of infrared transmitting and receiving sensing elements arranged on the outer frame of the touch screen, an infrared detecting net is formed on the surface of the screen, and a touch object can block the infrared on a contact to realize the operation of the touch screen. And the position of the touch point is converted into the coordinate position of touch control, so that the response of the operation is realized. On the infrared touch screen, the circuit board devices arranged on four sides of the screen are provided with infrared transmitting tubes and infrared receiving tubes, and the infrared transmitting tubes and the infrared receiving tubes correspondingly form a transverse and vertical crossed infrared matrix.
Based on the principle of the touch screen of the infrared technology, the touch screen can be combined with a projector to build an interactive touch projection screen outdoors. The equipment consists of a projector and an infrared touch instrument, wherein an infrared emission element and a receiving induction element are arranged on the infrared touch instrument. Compared with other touch screens, the device has the advantages of small volume and easy carrying; the image to be put in is large, the application range is wide, and a common wall surface is used as a projection main body; the cost is low, and the cost of the projector and the infrared touch instrument is far lower than that of other types of touch screens with the same size. There are problems in that: when the picture was put in to the projecting apparatus on the wall, because open air wall majority unevenness, have partial infrared ray to be sheltered from by the arch of wall all the time after the installation of infrared touch control appearance, lead to infrared touch control appearance all unable normal response on this protruding water flat line and the perpendicular line of place. The position of the projection is referred to in this case as the dead point. The conventional method under the condition is to close the infrared transmitting and receiving sensing element corresponding to the dead point, but the sensing precision of the infrared touch instrument is undoubtedly reduced by the method, and under the condition that the dead point of the wall surface is too much, the infrared touch instrument cannot sense a large area of area, so that the precision of the infrared touch instrument is seriously reduced, and the infrared touch instrument cannot be normally used.
Disclosure of Invention
The invention provides an anti-interference infrared touch device which can be automatically adjusted to ensure that an infrared touch instrument can still normally operate under the condition that a plurality of wall surface dead points are found after installation.
The basic scheme provided by the invention is as follows: the anti-interference infrared touch device comprises a projector and an infrared touch instrument, wherein the infrared touch instrument comprises an infrared touch frame, a mounting seat and a telescopic piece, the mounting seat is fixed on a wall surface, one end of the telescopic piece is connected with the mounting seat, the other end of the telescopic piece is connected with the infrared touch frame, a plurality of infrared transmitting pieces and a plurality of infrared receiving induction pieces are arranged on the infrared touch frame, and infrared rays transmitted by the infrared transmitting pieces are parallel to the wall surface;
the infrared touch control device further comprises a touch control regulation and control module, wherein the touch control regulation and control module is used for controlling the telescopic piece to extend to increase the distance between the infrared touch control frame and the wall surface when dead points exceeding the set number are sensed on the wall surface according to the infrared receiving sensing piece, and controlling the telescopic piece to stop extending until the number of the dead points on the wall surface is equal to or less than the set number.
The principle is as follows: after the dead points are found to be more, the touch control regulation and control module enables the distance between the infrared touch control frame and the wall to be enlarged, the infrared matrix emitted by the infrared emitting piece can be gradually far away from the wall, and when the distance between the infrared matrix and the wall can be larger than the distance between the protrusions and the wall, the dead points caused by the protrusions can be eliminated. Because the precision of the infrared touch instrument is influenced after the distance between the infrared touch frame and the wall surface is increased, acceptable bulges are set according to actual conditions, and the precision of the infrared touch instrument is prevented from being excessively influenced due to few convex reasons.
The normal use of the infrared touch instrument can be ensured only if the relative position relation between the infrared transmitting piece and the infrared receiving induction piece is unchanged. Therefore, in the scheme, the infrared transmitting piece and the infrared receiving induction piece are fixed on the infrared touch frame, and the positions of the infrared transmitting piece and the infrared receiving induction piece are fixed.
Compared with the prior art, the scheme has the advantages that: can be according to the distance of actual conditions adjustment equipment for the wall, gain the balance in precision and practicality, make the scheme can be in the protruding normal use under the more circumstances of wall.
Further, a painting roller is arranged on the infrared touch frame, the lower end face of the painting roller is overlapped with the infrared matrix, and colored viscose is adhered to the surface of the painting roller.
Has the advantages that: and preliminarily adjusting and controlling the distance between the infrared touch frame and the wall surface, so that the infrared touch frame is higher than most of the bulges, and the remaining few of the bulges are marked by the brushing roller. And (3) identification process: the brush roller can rise along with infrared touch frame together, and after the brush roller slides from one end to the other end, the arch that is higher than the brush roller will be scribbled colored viscose, and colored viscose can sign protruding position, makes things convenient for installer to handle the arch, owing to be the brush of physics, does not receive the restriction of infrared touch instrument performance defect itself, so can show all archs on the wall.
Further, the projector comprises a correction projection module, wherein the correction projection module is used for confirming the position of a dead point on the wall surface according to the sensing condition of the infrared receiving sensing piece and controlling the projector to project cross projection at the dead point according to the position of the dead point. Has the advantages that: the position of cross projection sign dead point supplies the staff to look for, when the staff handles the wall arch simultaneously, the protruding condition of projection also in time reflection simultaneously, and when protruding back was handled, the cross projection had whether to show bellied processing condition.
The infrared ray emitting device comprises a shell, an adhesive pad, a transverse reflecting assembly and a vertical reflecting assembly, wherein the adhesive pad is fixed on the lower end face of the shell and fixed on a wall surface; be equipped with vertical light channel in the vertical reflection subassembly, vertical light channel middle part hunch-up, vertical light channel is equipped with vertical light inlet and vertical light outlet, and the infrared ray of infrared emission spare transmission jets into from vertical light inlet, jets out from vertical light outlet, and vertical light channel makes the infrared ray collineatly after kicking into before with jetting into.
The problems are as follows: the infrared touch frame and the wall are too far away from each other to influence the precision of the infrared touch instrument, and the reason is that when a user blocks infrared rays by hands or other tools, the infrared touch instrument is not usually in contact with the wall in a mode perpendicular to the wall but has a certain inclination angle. Taking the way of touching the wall surface with a finger as an example, when in use, the touch point assumed by the user is the position where the tip touches the wall surface, and since the finger touches the wall surface mostly in an inclined shape and the distance from the infrared matrix to the wall surface is too large, the actual touch point is a knuckle above the fingertip, which causes the deviation between the expected touch point and the actual touch point. In sum, the farther the infrared matrix is away from the wall surface, the lower the touch precision of the infrared touch instrument is.
Has the advantages that: in order to avoid because of the local several arch of being difficult for getting rid of on the wall, cause the distance between infrared contact frame and the wall too big, set up reflection part, the effect of reflection part: the protrusion is covered by the reflector, the lateral light is directed by the lateral emitting assembly of the reflector, and the vertical light is directed by the vertical reflecting assembly, so that the light bypasses the protrusion. The infrared touch instrument does not need to improve an infrared touch frame, and normal touch of the horizontal line and the vertical line where the infrared touch instrument bulges is also realized. The setting of reflector has promoted infrared touch-control appearance's whole touch-control precision.
Furthermore, a cross-shaped bulge is arranged on the shell. Has the advantages that: the cross-shaped protrusion assists in correcting the direction of the reflector, so that the reflector can operate normally.
Further, still include the sideslip pole and erect the slide bar, the inboard of infrared touch-control frame is equipped with a plurality of pairs of mounting grooves, and one in a pair of mounting groove sets up in the top of infrared ray transmission spare, and another in a pair of mounting groove sets up in the top of infrared ray receiving response piece, the both ends of sideslip pole can be installed respectively in a pair of horizontal mounting groove that sets up, the both ends of erecting the slide bar can be installed respectively in the mounting groove of a pair of vertical setting, the reflection piece is equipped with the sideslip hole that supplies the sideslip pole to pass and sliding connection, the reflection piece is equipped with the perpendicular slide hole that supplies to erect the slide bar and pass and sliding connection. Has the advantages that: because the infrared ray transmitting part and the infrared ray receiving induction part that mutually support require comparatively accurately, will reflect the accurate installation of piece and put in place comparatively difficultly, consequently set up horizontal sliding rod and perpendicular slide bar, know dead point position after, install horizontal sliding rod and perpendicular slide bar in a pair of mounting grooves that the dead point corresponds. Then the horizontal sliding rod firstly passes through the horizontal sliding hole of the reflecting piece, and then the vertical sliding rod passes through the vertical sliding hole of the reflecting piece, so that the reflecting piece can be accurately installed on a dead point.
Drawings
Fig. 1 is a schematic structural diagram of an anti-interference infrared touch device according to an embodiment of the present invention.
Fig. 2 is a left side view of fig. 1.
Fig. 3 is a cross-sectional view of the reflector a-a of fig. 1.
Detailed Description
The following is further detailed by the specific embodiments:
description of reference numerals: the device comprises an infrared touch frame 1, an infrared emitting part 2, an infrared receiving sensing part 3, a mounting seat 4, a telescopic part 5, a reflecting part 6, a shell 61, a cross-shaped bulge 62, a transverse light channel 63, a vertical light channel 64, a wall surface 7, a painting roller 8, a transverse sliding rod 9, a transverse sliding hole 91, a vertical sliding rod 10, a vertical sliding hole 101 and a bulge 19.
Example (b): the anti-interference infrared touch device comprises a projector and an infrared touch instrument, wherein the infrared touch instrument shown in figure 2 comprises an infrared touch frame 1, a mounting seat 4, a telescopic piece 5 and a touch control regulation and control module. The mount pad 4 is fixed on the wall 7 through sucking disc or bolt, and mount pad 4 is connected to 5 one ends of extensible member, and infrared touch-control frame 1 is connected to the other end, and the extensible member this embodiment adopts electric putter, and electric putter's push rod is driven by motor drive lead screw and is stretched out and drawn back. As shown in fig. 1, 12 infrared emitters transversely disposed on the infrared touch frame 1 and 12 infrared receiving sensors transversely disposed on the infrared touch frame 1 are also provided, and 12 infrared emitters 2 vertically disposed on the infrared touch frame 1 and 12 infrared receiving sensors 3 vertically disposed on the infrared touch frame 1. The infrared emitting member emits an infrared matrix parallel to the wall surface 7.
The relative position relation of the infrared transmitting part 2 and the infrared receiving induction part 3 is ensured to be unchanged in the installation process, and the normal use of the infrared touch instrument can be ensured. Therefore, in the scheme, the infrared emitting part 2 and the infrared receiving induction part 3 are both fixed on the infrared touch frame 1 through bolts. The infrared touch frame 1 is vertically connected with a painting roller 8 in a sliding mode, the lower end face of the painting roller 8 is overlapped with the infrared matrix, and colored viscose is adhered to the surface of the painting roller 8.
During the use, as shown in fig. 2, after the fact that the number of the wall surface salient points is more and the dead points of the infrared touch instrument exceed 3, the touch control regulation and control module controls the extension piece 5 to extend to increase the distance between the infrared touch frame 1 and the wall surface 7, and when the number of the dead points on the wall surface 7 is equal to or less than 3, the extension piece 5 is controlled to stop extending, namely, the motor of the electric push rod is stopped to rotate. The distance between the infrared touch frame 1 and the wall surface 7 is enlarged, so that the infrared matrix emitted by the infrared emitting piece 2 can be gradually increased, and when the infrared matrix is higher than most of the bulges 19 of the wall surface 7, most of the bulges 19 can be eliminated to cause dead spots.
When the number of the top dead centers of the wall surface 7 is equal to or less than 3, a few protrusions 19 are left to be marked by the painting roller 8. And (3) identification process: after the brushing roller 8 slides from the upper end to the lower end as shown in fig. 1, the protrusions 19 higher than the lower end of the brushing roller 8 are coated with colored adhesive, the colored adhesive can mark the positions of the protrusions 19, so that an installer can conveniently process the protrusions 19, and the physical brushing is not limited by the performance defects of the infrared touch instrument, so that all the positions of the protrusions 19 causing dead points on the wall surface 7 can be marked.
In the embodiment, the brush roller marks the protrusion, and the correction projection module of the projector can display the position with the dead point. The correction projection module is used for confirming the position of a dead point on the wall surface 7 according to the sensing condition of the infrared receiving sensing piece 3 and controlling the projector to project cross projection at the dead point according to the position of the dead point.
After the projection causing the dead point is identified, the projection 19 can be processed by mounting the reflecting member 6. The function of the reflector 6: the protrusion 19 is covered by the reflector 6, and the lateral light is guided by the lateral emitting assembly of the reflector 6, and the vertical light is guided by the vertical reflecting assembly, so that the light bypasses the protrusion 19. The infrared touch instrument can normally touch without increasing the infrared touch frame 1. The setting of reflector 6 has promoted infrared touch instrument's whole touch-control precision.
The infrared touch frame 1 needs to be further processed to accurately mount the reflection member 6. The infrared touch frame 1 can be matched with the horizontal sliding rod 9 and the vertical sliding rod 10 to accurately position the reflecting piece 6 to a dead point.
The inboard of infrared touch-control frame 1 is equipped with a plurality of pairs of mounting grooves, and a pair of mounting groove corresponds infrared emission spare 2 and infrared ray receiving induction member setting. One of a pair of mounting grooves is arranged above the infrared transmitting piece 2, the other of the pair of mounting grooves is arranged above the infrared receiving induction piece 3, two ends of the cross slide rod 9 can be respectively arranged in the pair of transversely arranged mounting grooves, and two ends of the vertical slide rod 10 can be respectively arranged in the pair of vertically arranged mounting grooves. As shown in FIG. 3, the reflection member 6 is provided with a lateral slide hole 91 through which the lateral slide bar 9 is slidably connected, and the reflection member 6 is provided with a vertical slide hole 101 through which the vertical slide bar 10 is slidably connected.
As shown in figure 1, when in use, the transverse sliding rod 9 firstly passes through the transverse sliding hole 91 of the reflector 6, then both ends of the transverse sliding rod 9 are respectively installed in a pair of installation grooves which point transversely of the cross projection, then the reflector 6 is moved to the vicinity of the cross projection, then the vertical sliding rod 10 passes through the vertical sliding hole 101, and then the vertical sliding rod 10 is installed in a pair of installation grooves which point vertically of the cross projection. At the moment, whether the cross projection disappears or not is observed, the disappearance instruction is accurately installed, and the disappearance instruction does not need to be corrected.
Wherein the reflector is used for guiding infrared rays which are blocked by the bulge to bypass the bulge. The reflector 6 includes a housing 61, an adhesive pad, a horizontal reflector assembly, and a vertical reflector assembly, as shown in fig. 3. Firstly, the bonding pad is fixed on the wall surface 7 by adopting viscose glue, the end surface of the bonding pad is provided with a bolt hole, and the shell is fixed on the bonding pad through a bolt. The casing lower extreme is seted up and is supplied the protruding 19 male depressed groove of wall 7, horizontal reflection subassembly is all fixed in casing 61 with vertical reflection subassembly, horizontal reflection subassembly has three mirrors to constitute, be equipped with horizontal light channel 63 in the horizontal reflection subassembly, horizontal light channel 63 middle part hunch-up, horizontal light channel 63 is equipped with horizontal light inlet and horizontal light outlet, the infrared ray level of infrared emission spare 2 transmission jets into from horizontal light inlet, then jets out from horizontal light outlet with same high level, horizontal light channel 63 makes the infrared ray collineatly after jetting into before. Be equipped with vertical light channel 64 in the vertical reflection assembly, vertical light channel 64 middle part hunch-up is equipped with three mirrors in the vertical light channel 64 equally, and the principle is the same with horizontal light channel 63, and the infrared ray of vertical transmission jets into from vertical light inlet to jet out from vertical light outlet, the infrared ray is collineatly after kicking into before with jetting into.
The foregoing is merely an example of the present invention, and common general knowledge in the field of known specific structures and characteristics is not described herein in any greater extent than that known in the art at the filing date or prior to the priority date of the application, so that those skilled in the art can now appreciate that all of the above-described techniques in this field and have the ability to apply routine experimentation before this date can be combined with one or more of the present teachings to complete and implement the present invention, and that certain typical known structures or known methods do not pose any impediments to the implementation of the present invention by those skilled in the art. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (1)
1. The anti-interference infrared touch device comprises a projector and an infrared touch instrument, wherein the infrared touch instrument comprises an infrared touch frame, a mounting seat and a telescopic piece, the mounting seat is fixed on a wall surface, one end of the telescopic piece is connected with the mounting seat, the other end of the telescopic piece is connected with the infrared touch frame, a plurality of infrared transmitting pieces and a plurality of infrared receiving induction pieces are arranged on the infrared touch frame, and infrared rays transmitted by the infrared transmitting pieces are parallel to the wall surface;
the device is characterized by further comprising a touch control regulation and control module, wherein the touch control regulation and control module is used for controlling the telescopic piece to extend to increase the distance between the infrared touch control frame and the wall surface when the infrared receiving sensing piece senses that the number of dead points on the wall surface exceeds the set number, and controlling the telescopic piece to stop extending until the number of the dead points on the wall surface is equal to or less than the set number;
the infrared touch frame is provided with a painting roller, the lower end face of the painting roller is overlapped with the infrared matrix, and colored viscose is adhered to the surface of the painting roller;
the projector comprises a correction projection module, wherein the correction projection module is used for confirming the position of a dead point on the wall surface according to the sensing condition of the infrared receiving sensing piece and controlling the projector to project cross projection at the dead point according to the position of the dead point;
the infrared touch control device is characterized by further comprising a transverse sliding rod, a vertical sliding rod and a reflecting piece, wherein a plurality of pairs of mounting grooves are formed in the inner side of the infrared touch control frame, one of the mounting grooves is arranged above the infrared transmitting piece, the other mounting groove is arranged above the infrared receiving sensing piece, two ends of the transverse sliding rod can be respectively mounted in the mounting grooves which are transversely arranged, two ends of the vertical sliding rod can be respectively mounted in the mounting grooves which are vertically arranged, the reflecting piece is provided with a transverse sliding hole through which the transverse sliding rod passes and is in sliding connection, the reflecting piece is provided with a vertical sliding hole through which the vertical sliding rod passes and is in sliding connection, the transverse sliding rod passes through the transverse sliding hole of the reflecting piece, two ends of the transverse sliding rod are respectively mounted in the mounting grooves which are transversely directed in the cross projection, the reflecting piece is moved to the vicinity of the cross projection, the vertical sliding rod passes through the vertical sliding hole, and the vertical sliding rod is, the reflecting piece comprises a shell, an adhesive pad, a transverse reflecting assembly and a vertical reflecting assembly, wherein a cross-shaped bulge is arranged on the shell, the adhesive pad is fixed on the lower end face of the shell, a concave groove for inserting a wall bulge is formed in the middle of the adhesive pad, the transverse reflecting assembly and the vertical reflecting assembly are fixed on the shell, a transverse light channel is arranged in the transverse reflecting assembly, the middle of the transverse light channel is arched, the transverse light channel is provided with a transverse light inlet and a transverse light outlet, infrared rays emitted by the infrared emitting piece are emitted from the transverse light inlet and are emitted from the transverse light outlet, and the transverse light channel enables the infrared rays to be coplanar and collinear after being emitted from the transverse light inlet; be equipped with vertical light channel in the vertical reflection subassembly, vertical light channel middle part hunch-up, vertical light channel is equipped with vertical light inlet and vertical light outlet, and the infrared ray of infrared emission spare transmission jets into from vertical light inlet to jet out from vertical light outlet, vertical light channel makes the infrared ray before kicking into with jet into after coplane and collineation.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810910695.5A CN109002232B (en) | 2018-08-10 | 2018-08-10 | Anti-interference infrared touch device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810910695.5A CN109002232B (en) | 2018-08-10 | 2018-08-10 | Anti-interference infrared touch device |
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| CN109002232A CN109002232A (en) | 2018-12-14 |
| CN109002232B true CN109002232B (en) | 2021-05-07 |
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| CN201810910695.5A Active CN109002232B (en) | 2018-08-10 | 2018-08-10 | Anti-interference infrared touch device |
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| CN101957688A (en) * | 2009-07-16 | 2011-01-26 | 张海宏 | Method and device for multiply identifying surface infrared laser curtains |
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| CN106598361A (en) * | 2016-12-27 | 2017-04-26 | 美的智慧家居科技有限公司 | Projection touch device and domestic appliance |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI608393B (en) * | 2016-05-27 | 2017-12-11 | 光峰科技股份有限公司 | Projection system and optical screen generating device thereof |
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2018
- 2018-08-10 CN CN201810910695.5A patent/CN109002232B/en active Active
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| CN101957688A (en) * | 2009-07-16 | 2011-01-26 | 张海宏 | Method and device for multiply identifying surface infrared laser curtains |
| CN102323863A (en) * | 2011-04-29 | 2012-01-18 | 范文斌 | Device based on plane light source positioning and method |
| CN105786265A (en) * | 2014-12-17 | 2016-07-20 | 中强光电股份有限公司 | Optical touch system, light curtain generation module and adjustment structure |
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