KR100900321B1 - Multi touch screen using infrared camera - Google Patents

Multi touch screen using infrared camera Download PDF

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KR100900321B1
KR100900321B1 KR1020070083682A KR20070083682A KR100900321B1 KR 100900321 B1 KR100900321 B1 KR 100900321B1 KR 1020070083682 A KR1020070083682 A KR 1020070083682A KR 20070083682 A KR20070083682 A KR 20070083682A KR 100900321 B1 KR100900321 B1 KR 100900321B1
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infrared
touch screen
light emitting
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infrared camera
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KR20090019345A (en
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윤주영
권철
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권철
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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F3/0304—Detection arrangements using opto-electronic means

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Abstract

본 발명은 적외선카메라를 이용한 멀티 터치스크린에 관한 것으로, 더욱 상세하게는 다수의 적외선 발광LED와 적외선카메라를 장착하여 다수의 터치점을 정확하게 인식하고, 작업을 수행할 수 있도록 한 멀티터치스크린에 관한 것이다.The present invention relates to a multi-touch screen using an infrared camera, and more particularly, to a multi-touch screen that is equipped with a plurality of infrared light emitting LEDs and an infrared camera to accurately recognize a plurality of touch points and perform operations. will be.

본 발명은 전방에 화상면이 형성되는 몸체가 형성되고, 상기 몸체의 내부에는 화상면으로 다수의 반사거울을 이용하여 영상을 송출하는 프로젝터가 형성되며, 상기 프로젝터와 이격되게 적외선카메라가 화상면에서 반사되는 적외선을 감지하도록 형성되고, 상기 적외선은 화상면의 주연부와 몸체의 내부에 형성된 다수의 적외선발광LED에 의해서 송출되어 터치되는 물체에 의해서 화상면의 후면으로 반사되는 것을 특징으로 구성된다.According to the present invention, a body having an image surface formed on the front side is formed, and a projector for transmitting an image using a plurality of reflection mirrors is formed inside the body, and an infrared camera is spaced apart from the projector. It is formed to detect the reflected infrared rays, the infrared rays are characterized by being reflected by the back of the image surface by the object to be transmitted and touched by a plurality of infrared light emitting LED formed in the periphery of the image surface and the body.

본 발명의 터치스크린에 의하면 보다 정확하게 터치점을 인식할 수 있고, 다수의 터치점을 인식할 수 있으며, 박스형상으로 형성되어 있어서 사용하기에 편리할 뿐만 아니라, 이진화기법을 사용하므로 연산처리가 단순해지는 등의 효과가 발생한다.According to the touch screen of the present invention, it is possible to recognize touch points more accurately, to recognize a plurality of touch points, and to be formed in a box shape, which is not only convenient to use, but also using a binarization technique, so that the operation processing is simple. Effects such as remission occur.

적외선, 멀티터치, 터치점, 터치스크린, 적외선카메라, 화상, 프로젝터. Infrared, multi-touch, touch point, touch screen, infrared camera, image, projector.

Description

적외선카메라를 이용한 멀티 터치스크린{MULTI TOUCH SCREEN USING INFRARED CAMERA}Multi-touch screen using infrared camera {MULTI TOUCH SCREEN USING INFRARED CAMERA}

본 발명은 적외선카메라를 이용한 멀티 터치스크린에 관한 것으로, 더욱 상세하게는 다수의 적외선 발광LED와 적외선카메라를 장착하여 다수의 터치점을 정확하게 인식하고, 작업을 수행할 수 있도록 한 멀티터치스크린에 관한 것이다.The present invention relates to a multi-touch screen using an infrared camera, and more particularly, to a multi-touch screen that is equipped with a plurality of infrared light emitting LEDs and an infrared camera to accurately recognize a plurality of touch points and perform operations. will be.

컴퓨터를 이용한 프리젠테이션이 발달함에 따라서, 사용자가 화상면에 뿌려지는 영상과 인터페이스(interface)하기 위한 인식장치가 필요하게 되었다.As the presentation using a computer has been developed, a recognition device for interfacing with an image sprayed on an image plane is required.

상기 인터페이스를 위한 인식장치로는 대표적으로 터치스크린(touchscreen)이 있는데, 화면의 전방에 터치스크린을 설치하여 필요한 위치에 사용자가 터치(touch)하면 이러한 터치점(touchpoint)를 인식하여 영상과 인터페이싱시켜주는 장치이다.Recognizing apparatus for the interface is typically a touch screen (touch screen), a touch screen is installed in front of the screen when the user touches (touch) in the required position to recognize the touch point (touchpoint) to interface with the image Giving device.

종래의 터치스크린은 저항막방식, 정전용량방식, 레이저방식, 적외선방식, 카메라방식 등의 다양한 방식을 사용하여 화면상에 위치하는 터치점을 인식하고 있다. Conventional touch screens recognize a touch point located on a screen by using various methods such as a resistive film method, a capacitive method, a laser method, an infrared method, and a camera method.

상기 적외선방식의 적외선터치스크린은 도 7에 도시한 바와 같이, 터치스크 린(1)의 평면상의 상부측과 우측에 각각 소정거리 이격되어 위치하는 복수의 발광부(2)와; 상기 터치스크린(1)의 평면상 하부측과 좌측에 상기 각각의 발광부(2)에 대향하도록 배치되는 복수의 수광부(3)와; 상기 수광부(3)의 검출결과를 인가받아 터치스크린(1)의 눌림위치의 좌표를 검출하는 제어부(4)로 구성된다.As shown in FIG. 7, the infrared touch screen of the infrared type includes: a plurality of light emitting parts 2 positioned at a predetermined distance from the upper side and the right side of the plane of the touch screen 1, respectively; A plurality of light receiving parts 3 disposed on the lower and left sides of the touch screen 1 so as to face the respective light emitting parts 2; The controller 4 is configured to detect the coordinates of the pressed position of the touch screen 1 by receiving the detection result of the light receiver 3.

상기 종래의 적외선터치스크린은 적외선이 스크린의 표면에 격자형태로 형성되기 때문에 만약 스크린에 터치가 발생하게 되면, 발광부(2)의 위치와 터치에 의해서 가려지는 수광부(3)의 위치를 이용하여 터치점을 X,Y좌표로 인식할 수 있어서 사용자와 화상간의 인터페이스가 가능하게 된다.In the conventional infrared touch screen, since the infrared rays are formed in a grid shape on the surface of the screen, if a touch is generated on the screen, the position of the light emitting unit 2 and the position of the light receiving unit 3 covered by the touch are used. Since the touch point can be recognized by the X and Y coordinates, an interface between the user and the image is possible.

그러나, 종래의 터치스크린은 하나의 터치점만을 인식할 수밖에 없고, 정교하게 터치점을 인식하기 위해서는 많은 수의 발광부와 수광부가 필요하므로 생산비가 상승하는 문제점이 있으며, 그렇게 하더라도 정교하게 터치점을 인식하지 못하는 등의 문제점이 있었다.However, the conventional touch screen has to recognize only one touch point, and in order to precisely recognize the touch point, a large number of light emitting parts and light receiving parts are required, which increases the production cost. There was a problem such as not recognizing.

본 발명은 다수개의 수광부와 발광부로 형성되는 일반적인 적외선터치스크린에 있어서, The present invention is a general infrared touch screen formed of a plurality of light receiving parts and light emitting parts,

전방상단에 후면투사용필름으로 구성되는 화상면이 형성된 박스형상의 몸체와; A box-shaped body having an image surface formed of a rear projection film on the front top;

상기 몸체의 화상면의 주연부에 적외선을 방사하는 발광LED가 형성된 평면적외선부와;A planar infrared part having a light emitting LED emitting infrared rays at the periphery of the image surface of the body;

상기 몸체의 내부의 양측면에 경사진 반사판이 형성되고, 상기 반사판의 상단에 적외선을 방사하는 적외선발광LED가 형성된 경사적외선부와; An inclined infrared portion having inclined reflecting plates formed on both sides of the inside of the body and having an infrared light emitting LED emitting infrared rays on top of the reflecting plate;

상기 몸체의 내부하단에 영상을 송출하는 프로젝터와; A projector for transmitting an image to an inner lower end of the body;

상기 프로젝터와 이격되게 적외선카메라가 형성된 것을 특징으로 한다.An infrared camera is formed to be spaced apart from the projector.

본 발명의 터치스크린에 의하면 보다 정확하게 터치점을 인식할 수 있고, 다수의 터치점을 인식할 수 있으며, 박스형상으로 형성되어 있어서 사용하기에 편리 할 뿐만 아니라, 이진화기법을 사용하므로 연산처리가 단순해지는 등의 효과가 발생한다.According to the touch screen of the present invention, it is possible to recognize touch points more accurately, to recognize a plurality of touch points, and to be formed in a box shape, which is not only convenient to use, but also using a binarization technique, so that the operation processing is simple. Effects such as remission occur.

도 1 내지 도 7을 참조하면, 본 발명은 다수개의 수광부와 발광부로 형성되는 일반적인 적외선터치스크린에 있어서, 전방상단에 후면투사용필름으로 구성되는 화상면(110)이 형성된 박스형상의 몸체(100)와; 상기 몸체(100)의 화상면(110)의 주연부에 다수의 발광LED(210)가 형성된 평면적외선부(200)와; 상기 몸체(100)의 내부의 양측면에 경사진 반사판(251)이 형성되고, 상기 반사판(251)의 상단에 적외선을 발광하는 다수의 적외선발광LED(252)가 형성된 경사적외선부(250)와; 상기 몸체(100)의 내부후방에 영상을 송출하는 프로젝터(300)와; 상기 프로젝터(300)와 이격되게 적외선카메라(400)가 형성된다. 1 to 7, in the general infrared touch screen formed of a plurality of light receiving parts and light emitting parts, a box-shaped body 100 having an image surface 110 formed of a rear projection film on a front upper part is formed. )Wow; A planar infrared unit 200 having a plurality of light emitting LEDs 210 formed at a periphery of the image surface 110 of the body 100; An inclined infrared portion 250 having inclined reflecting plates 251 formed on both sides of the inside of the body 100 and having a plurality of infrared emitting LEDs 252 emitting infrared light on an upper end of the reflecting plate 251; A projector (300) for transmitting an image to the inner rear of the body (100); An infrared camera 400 is formed to be spaced apart from the projector 300.

상기 화상면(110)에 형성되는 후면투사용필름은 후방에서 송출되는 프로젝터(300)의 영상을 전방에서 확인할 수 있도록 형성된 필름으로 종래에 많이 사용되는 필름이다.The rear projection film formed on the image surface 110 is a film formed so as to be able to check the image of the projector 300 sent from the rear from the front is a film commonly used in the past.

상기 평면적외선부(200)는 다수개의 발광LED(210)가 화상면(110)의 주연부를 따라서 형성되는데, 상기 발광LED(210)는 화상면(110)의 크기의 변화에 대응하기 위해서 5~10개씩 모듈화하여 형성한다.The planar infrared ray portion 200 includes a plurality of light emitting LEDs 210 formed along the periphery of the image surface 110. The light emitting LEDs 210 may be formed in a range from 5 to 5 to correspond to a change in the size of the image surface 110. It is formed by modularizing 10 pieces.

상기 화상면(110)은 돌출되어 주연부가 경사지게 깍여서 형성되고, 상기 화상면(110)의 주연부의 깍여진 면에는 평면적외선부(200)의 발광LED(210)가 접촉되어 형성된다.The image surface 110 is formed to protrude so that the periphery is obliquely cut, and the light-emitting LED 210 of the planar infrared part 200 is formed in contact with the cut-out surface of the periphery of the image surface 110.

상기와 같이 발광LED(210)가 화상면(110)의 주연부의 깍여진 면에 위치하게 되면, 일부의 적외선이 화상면(110)의 내부에서 이동하다가 터치점에서 적외선이 방출되게 된다.As described above, when the light emitting LED 210 is positioned on the cut surface of the periphery of the image surface 110, some infrared rays move inside the image surface 110, and infrared rays are emitted at the touch point.

상기 평면적외선부(200)의 발광LED(210)가 적외선을 방사하는 방향인 화상면(110)방향에는 발광LED(210)에서 방사되는 적외선이 보다 세밀하게 방사될 수 있도록 적외선방사창(203)을 형성하는데, 상기 적외선방사창(203)은 1~3mm의 틈이다. Infrared radiation window 203 so that the infrared rays emitted from the light emitting LEDs 210 can be more precisely radiated in the direction of the image plane 110 in which the light emitting LEDs 210 of the planar infrared portion 200 emits infrared rays. To form, the infrared radiation window 203 is a gap of 1 ~ 3mm.

상기와 같이 적외선방사창(203)을 형성하지 않으면 도 4의 (a)와 같이 적외선카메라(400)가 터치점을 인식하는 범위가 넓어져서 정확한 터치점을 찾기가 어려워지는 문제점이 있으나, 적외선방사창(203)을 형성하면 도 4의 (b)와 같이 적외선카메라(400)가 터치점을 인식하는 범위가 좁아져서 매우 정교하게 터치점을 인식하게 된다. If the infrared radiation window 203 is not formed as described above, as shown in FIG. 4A, the range of the infrared camera 400 recognizing the touch point becomes wider, which makes it difficult to find an accurate touch point. When the window 203 is formed, as shown in FIG. 4B, the range of the infrared camera 400 recognizing the touch point is narrowed, so that the touch point can be recognized very precisely.

상기 평면적외선부(200)의 발광LED(210)가 적외선을 방사하는 방향인 화상면(110)방향에 형성된 적외선방사창(203)이 형성되지 않고, 평면적외선부(200)의 측면의 길이에 대응되도록 오목렌즈 형태로 길이방향으로 오목하게 형성된 적외선조사렌즈(208)가 형성될 수 있다.The infrared radiation window 203 formed in the direction of the image plane 110, which is a direction in which the light emitting LEDs 210 of the planar infrared part 200 emits infrared rays, is not formed, and the length of the side surface of the planar infrared part 200 is not formed. The infrared irradiation lens 208 may be formed to be correspondingly concave in the longitudinal direction in the form of a concave lens.

상기 적외선조사렌즈(208)는 발광LED(210)에서 방사된 적외선을 모아서 방사할 수 있도록 하여 적외선의 방사량은 그대로 하고, 퍼지는 정도를 줄여서 효율을 높이는 역할을 한다.The infrared irradiation lens 208 collects the infrared rays emitted from the light emitting LED 210 to emit the radiation amount of the infrared light as it is, and serves to increase the efficiency by reducing the spread.

상기 경사적외선부(250)는 반사판(251)이 몸체(100)의 내부에 경사져서 반사 판(251)의 정면이 화상면(110)의 후면을 비스듬히 바라볼 수 있도록 양 측면에 각각 형성되고, 상기 반사판(251)의 가운데에는 다수개의 적외선발광LED(252)가 각각 형성된다.The inclined infrared rays 250 are respectively formed on both sides such that the reflecting plate 251 is inclined inside the body 100 so that the front surface of the reflecting plate 251 can be viewed at an angle to the rear surface of the image surface 110. A plurality of infrared light emitting LEDs 252 are formed in the center of the reflecting plate 251, respectively.

상기 반사판(251)은 적외선발광LED(252)에서 화상면(110)으로 방사된 적외선이 반사되어 도달할 때 다시 반사할 수 있도록 하여 적외선발광LED(252)의 개수를 줄여도 반사되는 만큼의 적외선이 충분히 방사되므로 정확한 터치점을 형성할 수 있다.The reflector 251 allows the infrared light emitted from the infrared light emitting diode 252 to reflect to the image plane 110 to be reflected when it arrives, thereby reducing the number of infrared light emitting LEDs 252 so that the infrared rays reflected as much as the reflected light is reflected. It is sufficiently radiated to form an accurate touch point.

상기 적외선발광LED(252)는 화상면(110)의 후면을 커버(cover)할 수 있도록 화상면(110)의 크기에 대응하여 5~10개가 각각 형성된다.Infrared light emitting LEDs 252 are formed in the range of 5 to 10 corresponding to the size of the image surface 110 so as to cover the rear surface of the image surface 110.

상기 발광LED(210)와 적외선발광LED(252)는 같은 종류의 적외선을 방사할 수 있도록 형성되는데, 850nm 영역의 파장대의 적외선을 방사할 수 있는 것이다.The light emitting LEDs 210 and the infrared light emitting LEDs 252 are formed to emit the same kind of infrared rays, and may emit infrared rays in the wavelength range of 850 nm.

상기 프로젝터(300)는 몸체(100)의 후방에 형성되고, 다수의 반사거울(310)을 이용하여 좁은 거리를 확보하여 화상면(110)의 후면에서 영상을 송출할 수 있도록 형성된다. The projector 300 is formed at the rear of the body 100 and is formed to secure a narrow distance by using a plurality of reflective mirrors 310 to transmit an image from the rear of the image surface 110.

상기 적외선카메라(400)는 발광LED(210)와 적외선발광LED(252)에서 송출되는 적외선을 감지하여 영상을 만들어내는 장비이다.The infrared camera 400 is a device for generating an image by detecting the infrared rays emitted from the light emitting LED 210 and the infrared light emitting LED 252.

상기 적외선카메라(400)의 렌즈의 전방에는 밴드패스필터(band-pass-filter)를 장착할 수 있는데, 상기 밴드패스필터는 동일한 영역의 파장대, 즉 본원발명에서 사용하는 850nm 영역의 파장대의 적외선만 통과시킬 수 있는 필터이다.In front of the lens of the infrared camera 400 may be equipped with a band-pass filter (band-pass-filter), the band-pass filter is the infrared band of the wavelength band of the same region, that is, the wavelength band of the 850nm region used in the present invention A filter that can pass through.

도 6은 적외선카메라(400)가 터치점이 발생했을 때 감지하는 영상을 나타낸 것으로, 도 6의 (a)는 평면적외선부(200)의 발광LED(210)가 터치점을 인식하는 형 태이고, 도 6의 (b)는 경사적외선부(250)의 적외선발광LED(252)가 터치점을 인식하는 형태이며, 도 6의 (c)는 평면적외선부(200)와 경사적외선부(250)에서 방사되는 적외선을 적외선카메라(400)가 실제로 감지하는 형태를 나타낸 것으로, 터치점을 매우 정확하게 찾아낼 수 있는 것이다. 6 illustrates an image detected by the infrared camera 400 when a touch point is generated. FIG. 6A illustrates a state in which the light emitting LEDs 210 of the planar infrared part 200 recognize the touch point. 6B illustrates a form in which the infrared light emitting LEDs 252 of the gradient IR unit 250 recognize a touch point, and FIG. 6C illustrates the planar IR unit 200 and the gradient IR unit 250. As the infrared camera 400 actually detects the emitted infrared rays, it is possible to find the touch point very accurately.

상기와 같이 형성된 본 발명의 터치스크린에 터치점이 발생했을 경우에 터치점을 인식하는 방법을 설명하면 다음과 같다. When a touch point occurs in the touch screen of the present invention formed as described above will be described a method for recognizing the touch point.

적외선카메라(400)가 다수의 터치점을 동시에 영상으로 인식하는 인식단계와; A recognition step of the infrared camera 400 recognizing a plurality of touch points simultaneously as an image;

상기 인식된 영상을 흑백영상으로 변환하는 이진화단계와;A binarization step of converting the recognized image into a black and white image;

상기 이진화단계의 흑백영상 중 백색영상을 추출하는 라벨링단계와; A labeling step of extracting a white image from the black and white image of the binarization step;

상기 백색영상에 대하여 기하학적 특징을 고려하여 영역을 평가하고 중심위치를 획득하는 좌표획득단계와;A coordinate acquiring step of evaluating an area and obtaining a central position with respect to the white image in consideration of geometric features;

상기 획득된 좌표를 영상과 매치시키는 영상매치단계로 형성된다. The image matching step of matching the obtained coordinates with the image is formed.

상기 적외선카메라(400)가 인식하는 영상은 인식되는 적외선의 세기에 따라서 그레이(gray)로 인식하는데, 이를 프로그램을 이용하여 이진화단계에서 흑백영상 즉 터치점을 백색으로, 나머지 부분은 흑색으로 인식한다.The image recognized by the infrared camera 400 is recognized as gray according to the intensity of the recognized infrared rays. In the binarization step, the image is recognized as a black and white image, that is, a touch point as white and the rest as black. .

상기 좌표획득단계는 기하학적 모형이 찌그러지거나 잘못된 미세한 점 등을 제거하고, 터치점을 정확하게 인식할 수 있도록 평가하며, 평가된 백색영상의 중심위치를 좌표로 획득한다. In the coordinate acquisition step, the geometric model is removed to be distorted or wrong fine points, evaluated to accurately recognize the touch point, and to obtain the center position of the evaluated white image as a coordinate.

도 1은 본 발명의 바람직한 실시예로 형성된 적외선카메라를 이용한 멀티 터치스크린의 개념도.1 is a conceptual diagram of a multi-touch screen using an infrared camera formed according to a preferred embodiment of the present invention.

도 2는 본 발명의 바람직한 실시예로 형성된 적외선카메라를 이용한 멀티 터치스크린의 정면개념도.Figure 2 is a front conceptual view of a multi-touch screen using an infrared camera formed in a preferred embodiment of the present invention.

도 3은 본 발명의 바람직한 실시예로 형성된 적외선카메라를 이용한 멀티 터치스크린의 측단면개념도.Figure 3 is a side cross-sectional conceptual view of a multi-touch screen using an infrared camera formed in a preferred embodiment of the present invention.

도 4는 본 발명의 바람직한 실시예로 형성된 적외선카메라를 이용한 멀티 터치스크린의 평면적외선부에 의해서 적외선카메라에 인식되는 화상개념도.4 is an image conceptual view recognized by an infrared camera by a planar infrared unit of a multi-touch screen using an infrared camera formed according to a preferred embodiment of the present invention.

도 5는 본 발명의 바람직한 실시예로 형성된 적외선카메라를 이용한 멀티 터치스크린의 평면적외선부의 적외선조사렌즈가 형성된 개념도.5 is a conceptual view in which the infrared irradiation lens of the planar infrared portion of the multi-touch screen using the infrared camera formed in a preferred embodiment of the present invention.

도 6는 본 발명의 바람직한 실시예로 형성된 적외선카메라를 이용한 멀티 터치스크린의 적외선카메라에 인식되는 화상개념도.6 is an image conceptual view recognized by an infrared camera of a multi-touch screen using an infrared camera formed according to a preferred embodiment of the present invention.

도 7은 본 발명의 바람직한 실시예로 형성된 적외선카메라를 이용한 멀티 터치스크린의 평면적외선부의 또다른 개념도.7 is another conceptual view of a planar infrared unit of a multi-touch screen using an infrared camera formed according to a preferred embodiment of the present invention.

도 8은 종래의 터치스크린의 개념도.8 is a conceptual diagram of a conventional touch screen.

- 도면의 부호설명 --Explanation of Codes on Drawings-

100 : 몸체, 110 : 화상면, 200 : 평면적외선부, 250 : 내부적외선부, 100: body, 110: image plane, 200: plane infrared portion, 250: internal infrared portion,

300 : 프로젝터, 310 : 반사거울, 400 : 적외선카메라.300: Projector, 310: Reflective Mirror, 400: Infrared Camera.

Claims (8)

삭제delete 다수개의 수광부와 발광부로 형성되는 일반적인 적외선터치스크린에 있어서, 전방상단에 후면투사용필름으로 구성되는 화상면(110)이 형성된 박스형상의 몸체(100)와; 상기 몸체(100)의 화상면(110)의 주연부에 적어도 하나의 발광LED(210)가 화상면(110)의 주연부를 따라서 형성된 평면적외선부(200)와; 상기 몸체(100)의 내부의 양측면에 경사진 반사판(251)이 형성되고, 상기 반사판(251)의 상단에 적외선을 발광하는 적어도 하나의 적외선발광LED(252)가 형성된 경사적외선부(250)와; 상기 몸체(100)의 내부후방에 영상을 송출하는 프로젝터(300)와; 상기 프로젝터(300)와 이격되게 적외선카메라(400)가 형성된 것을 특징으로 하는 적외선카메라를 이용한 멀티 터치스크린.A general infrared touch screen formed of a plurality of light receiving parts and a light emitting part, comprising: a box-shaped body (100) having an image surface (110) formed of a rear projection film on a front top; A planar infrared portion 200 formed at least at one edge of the image surface 110 of the body 100 along at least one light emitting LED 210 along the edge of the image surface 110; Inclined infrared portion 250 is formed on both sides of the inside of the body 100, the inclined reflector plate 251, the at least one infrared light emitting LED 252 for emitting infrared light on the top of the reflector plate 251 and ; A projector (300) for transmitting an image to the inner rear of the body (100); Multi-touch screen using an infrared camera, characterized in that the infrared camera 400 is formed to be spaced apart from the projector (300). 제 2항에 있어서,The method of claim 2, 상기 평면적외선부(200)의 발광LED(210)가 적외선을 방사하는 방향인 화상면(110)방향에는 발광LED(210)에서 방사되는 적외선이 보다 세밀하게 방사될 수 있도록 1~3mm의 틈인 적외선방사창(203)이 형성된 것을 특징으로 하는 적외선카메라를 이용한 멀티 터치스크린.Infrared rays having a gap of 1 to 3 mm so that the infrared rays emitted from the light emitting LEDs 210 can be more precisely radiated in the direction of the image plane 110 where the light emitting LEDs 210 of the planar infrared portion 200 emit infrared rays. Multi-touch screen using an infrared camera, characterized in that the radiation window 203 is formed. 제 2항 또는 3항에 있어서,The method of claim 2 or 3, 상기 평면적외선부(200)의 측면의 길이에 대응되도록 오목렌즈 형태로 길이방향으로 오목하게 형성된 적외선조사렌즈(208)가 형성된 것을 특징으로 하는 적외선카메라를 이용한 멀티 터치스크린.Multi-touch screen using an infrared camera, characterized in that the infrared irradiation lens 208 is formed concave in the longitudinal direction in the form of a concave lens to correspond to the length of the side of the planar infrared portion 200. 제 2항에 있어서,The method of claim 2, 상기 경사적외선부(250)는 반사판(251)이 몸체(100)의 내부에 경사져서 반사판(251)의 정면이 화상면(110)의 후면을 비스듬히 바라볼 수 있도록 양 측면에 각각 형성되는 것을 특징으로 하는 적외선카메라를 이용한 멀티 터치스크린.The inclined infrared rays 250 are formed on both side surfaces of the reflective plate 251 so as to be inclined inside the body 100 so that the front surface of the reflective plate 251 can be viewed obliquely from the rear surface of the image surface 110. Multi-touch screen using infrared camera. 삭제delete 삭제delete 삭제delete
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