CN201965586U - Optical touch detecting device based on touch screens - Google Patents

Optical touch detecting device based on touch screens Download PDF

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Publication number
CN201965586U
CN201965586U CN 201120047143 CN201120047143U CN201965586U CN 201965586 U CN201965586 U CN 201965586U CN 201120047143 CN201120047143 CN 201120047143 CN 201120047143 U CN201120047143 U CN 201120047143U CN 201965586 U CN201965586 U CN 201965586U
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China
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optical
light source
light
cavity
oscillation
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CN 201120047143
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Chinese (zh)
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任均宇
刘迎建
向国威
宫仁敏
郭洪峰
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汉王科技股份有限公司
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Abstract

The utility model discloses an optical touch detecting device based on touch screens, belongs to the field of optical detecting and comprises a control module, more than one optical sensor arranged at the end of a vertical angle adjacent to a touch screen and more than one active linear light source assembly arranged on the lateral wall of the touch screen, wherein the active linear light souece assembly comprises a luminous light source and an optical oscillation cavity. The luminous light source is arranged at one end or two ends of the optical oscillation cavity or arranged inside a supplementary lighting hole in the middle section of the optical oscillation cavity. A light port is arranged on one side of the optical oscillation cavity facing the touch screen, light emitted from the luminous light source is homogenized inside the optical oscillation cavity and projected onto the touch screen through the light port, and the control module processes image data collected by the optical sensors to obtain touch point coordinates information. The optical touch detecting device enables the active linear light source assembly to project stronger and more even linear light onto the touch screen so as to improve accuracy of the optical touch detecting.

Description

一种基于触控屏的光学触控检测装置 An optical detection apparatus based touch touch screen

技术领域 FIELD

[0001] 本实用新型涉及光学检测技术,特别涉及一种基于触控屏的光学触控检测装置。 [0001] The present invention relates to optical detection technology, and more particularly to an optical touch detecting device based on the touch screen. 背景技术 Background technique

[0002] 随着电子信息设备的快速发展,人们对人机交互方式提出了更高的要求,传统的键盘加鼠标模式的局限性逐渐暴露出来。 [0002] With the rapid development of electronic information devices, human-computer interaction people put forward higher requirements, the limitations of the traditional keyboard and mouse mode gradually exposed. 新出现的各类触控屏操作方式,得到了更多人的青睐。 Various types of touch-screen operation emerging got more people of all ages. 现阶段,触控屏的主要解决方案是:在显示屏上加装电阻式传感器或者电容式传感器,操作者用手指或者输入笔直接在显示屏上进行点击、写划等操作,以达到人机交互的目的。 At this stage, the main touch screen solutions are: installation of a resistive sensor or a capacitive sensor on the display screen, the operator performs input with a finger or pen click directly on the display screen, the write operation planning, etc., to achieve the man-machine the purpose of the interaction. 但是,由于在显示屏上加装结构会影响显示屏的光输出量,进而影响到显示效果,因此又出现了带有图像传感器如摄像机的触控屏。 However, since the installation of the display on the structure can affect the light output of the display, thereby affecting the display effect, and therefore appeared an image sensor such as a touch screen with a camera.

[0003] 现有技术中,上述带有图像传感器的触控屏通过在触控屏的两个相邻顶角安装图像传感器,应用三角定位技术实现触控物体的定位。 [0003] In the prior art, the above-described touch screen with the image sensor by the image sensor is mounted adjacent an apex angle in the two touch screen, the application of triangulation technique to achieve the positioning of the touch object. 这种方式需要背光光源,常用的方法是将背光光源安装于光学传感器端,在触控屏内壁上粘贴反光薄膜,通过反光薄膜的反射使背光光源所发出的光线分布在整个触控屏;当有触控物体进入触控屏时,从背光光源发射到图像传感器的去程光线被该触控物体遮挡,经图像传感器成像后会出现一个暗区,对这个暗区的坐标进行处理就可以得到触控物体的位置。 This approach requires a backlight source commonly used method is the backlight light source is attached to the end of an optical sensor, attached reflective film on the inner wall of the touch panel, reflected by the reflective film so that the light emitted from the backlight light source is distributed throughout the touch screen; when into the touch object when the touch screen, light emitted from the backlight to the image sensor to the light path is blocked by the touch object, there will be a dark area imaged by the image sensor, the coordinates of the dark region can be treated to give position of the touch object. 但是,由于反光薄膜在不同的入射光强条件下,所反射的光线能量不同,特别是在入射角越小时,反射的光强能量就越强,导致整个触控屏内光强分布不均勻,导致有的地方因光线过暗出现检测盲区,从而影响光学触控检测的准确性。 However, since the reflective film under conditions different intensity of incident light, reflected light energy different, particularly in the angle of incidence is smaller, the stronger the light intensity of reflected energy, resulting in the entire touch screen nonuniform light intensity distribution, results in some places due to light is too dark blind spot detection occurs, thus affecting the accuracy of the optical touch detection. 另外,反光薄膜直接暴露在空气中,容易腐蚀,并且容易毁坏。 Further, the reflective film is directly exposed to the air, easily corroded, and is easily destroyed.

实用新型内容 SUMMARY

[0004] 本实用新型的目的是,提供一种基于触控屏的光学触控检测装置,使光线均勻分布在触控屏上,提高光学触控检测的准确性。 [0004] The object of the present invention is to provide an optical touch detection apparatus based on the touch screen, so that light is distributed evenly on the touch screen, to improve the accuracy of the optical touch detection.

[0005] 为实现上述目的,本实用新型采用如下技术方案: [0005] To achieve the above object, the present invention adopts the following technical solution:

[0006] 一种基于触控屏的光学触控检测装置,包括控制模块、一个以上的安装于触控屏相邻顶角端的光学传感器、和一个以上的安装于触控屏侧壁的主动线性光源组件,所述控制模块通过连接线分别与所述光学传感器和所述主动线性光源组件相连接。 [0006] A touch screen-based optical touch detecting device comprising a control module, one or more touch screen mounted to the apex end adjacent optical sensors, and more than a touch screen mounted on the active linear sidewall the light source assembly, the control module is connected to the optical sensor assembly and the linear light source through the active connection lines respectively. 当有触控物进入所述触控屏时,所述控制模块对所述主动线性光源组件进行驱动以配合所述光学传感器采集光信号,并对所述光学传感器采集到的图像图形数据进行处理,检测出触控点坐标信肩、ο When the stylus into the touch screen, the control module of the active components of the linear light source is driven to fit the optical sensor collecting light signal, the optical sensor and the collected image processing graphics data detecting a touch point coordinates letter shoulder, o

[0007] 其中,所述主动线性光源组件可以包括发光光源和光学振荡腔;所述发光光源安装在所述光学振荡腔的一端或者两端,或者安装在所述光学振荡腔的中间段的补光孔内; 所述光学振荡腔呈半封闭式,其内腔涂覆有漫反射涂层,在朝向触控屏的一侧开有出光口; 所述发光光源发射的光在所述光学振荡腔内被勻化,并通过所述出光口射向所述触控屏。 [0007] wherein the active linear light source assembly may include a light source and an optical cavity oscillation; a light source mounted at one end or both ends of the oscillation optical cavity, or make the intermediate section mounted on the optical cavity oscillation light hole; oscillating said optical cavity in a semi-closed, the inner cavity coated with a diffusely reflective coating on the side facing the touch screen with a light outlet opening; said oscillation light emitted from the light emitting source in the optical cavity is homogenized through the light output port and toward the touch screen.

[0008] 优选地,所述光学振荡腔朝向触控屏的一侧所开的出光口为狭缝或者为若干狭缝的组合。 [0008] Preferably, the optical oscillation chamber side toward the touch screen light outlet opening of a slit or a combination of a plurality of slits. [0009] 可选地,所述光学振荡腔还可以为多腔组合,包括初级腔和次级腔,在所述初级腔和次级腔的内腔分别涂覆有漫反射涂层;所述初级腔呈半封闭式,在朝向所述次级腔的一侧开有出光孔,所述次级腔在朝向触控屏的一侧开有出光口;所述发光光源发射的光在所述初级腔内被勻化,并通过出光孔向次级腔射出勻化后的红外光,次级腔将所述初级腔出射的光进一步勻化后通过出光口射向触控屏。 [0009] Alternatively, the optical cavity may also be a multi-cavity oscillation composition, comprising a primary chamber and a secondary chamber, with a diffusely reflective coating each coating the lumen of the primary chamber and secondary chamber; the a semi-closed primary chamber, the secondary chamber on the side facing the injection hole is opened, the secondary chamber on the side facing the touch screen with a light outlet opening; light emitted from the light source in the the primary chamber is homogenized, and the infrared light emitted by the light homogenization hole to the secondary chamber, the secondary chamber to the primary chamber the light emitted toward the optical port further homogenized by a touch screen.

[0010] 本实用新型的有益效果是:通过采用主动线性光源组件发出的线性光,取代目前经反光薄膜反射所得到的被动光源的发光方式,可以使整个触控屏的光强更强、更均勻,有效降低检测盲区出现的几率,同时由于是主动光源发光,避免了从背光光源到反光薄膜方向的去程光线因触控物体反光而造成的干扰或误识别等问题,从而提高触控检测的准确性。 [0010] The beneficial effects of the present invention is: through the use of linear light emitted from the active linear light source assembly, replace the light emitting source passively reflected by the reflective film obtained, the entire touch screen intensity stronger, more evenly and effectively reduce the chance of blind detection occurs, and because the light source is an active light, light from the backlight to avoid interference to the outbound direction sheetings light reflective caused by the touch object or erroneous recognition problems, thereby improving the touch detection accuracy. 此外,采用主动线性光源组件的形式可以避免现有技术中反光薄膜的损坏,延长装置的使用寿命。 Further, the linear light source assembly using the active form of the prior art to avoid damage to the reflective film, extend the life of the device.

附图说明 BRIEF DESCRIPTION

[0011] 图1为本实用新型基于触控屏的光学触控检测装置的整体结构示意图; [0011] Fig 1 a schematic view of the new touch screen based on an overall configuration of the optical detection apparatus of the present touch utility;

[0012] 图2为本实用新型的主动线性光源组件的一种实施方式的结构示意图; [0012] FIG. 2 is a structural diagram of invention active linear light source assembly of an embodiment;

[0013] 图3为本实用新型的主动线性光源组件的另一种实施方式的结构示意图。 [0013] FIG. 3 is a schematic structural diagram of another embodiment of the invention the active linear light source assembly.

[0014] 附图标记说明:101-控制模块;102-光学传感器;103-主动线性光源组件; 104-触点;105-手指;106-触控屏; [0014] REFERENCE NUMERALS: a control module 101; 102- optical sensor; 103- active linear light source assembly; 104- contact; 105- finger; 106- touch screen;

[0015] 201-光学振荡腔;202-导光单元;203-发光光源;204-光源聚光单元;205-光源基座;206-出光聚光单元;207-出光口; [0015] 201- oscillation optical cavity; 202- light guiding unit; 203- light source; 204- light condensing unit; 205- light source substrate; 206- light condensing unit; 207- light outlet;

[0016] 301-光学振荡腔;302-次级腔;303-初级腔;304-光源基座;305-发光光源; 306-光源聚光单元;307-导光单元;308-出光孔;309-出光聚光单元;310-出光口。 [0016] The optical oscillation cavity 301; 302 secondary cavity; primary chamber 303; 304- light source substrate; light source 305; 306- light condensing unit; 307- light guiding unit; 308- light aperture; 309 - the light condensing unit; 310- light outlet.

具体实施方式 Detailed ways

[0017] 下面结合附图及实施例,对本实用新型的技术方案做详细描述。 [0017] The following embodiments and the accompanying drawings, a detailed description of the technical solution of the present invention. 应当理解,附图中所示各元部件是示意性而非限制性的,各特征未按比例画出。 It should be understood that each of the component parts shown in the drawings are illustrative and not restrictive, the respective features are not drawn to scale.

[0018] 参见图1,图1为本实用新型基于触控屏的光学触控检测装置的整体结构示意图。 [0018] Referring to FIG. 1, FIG. 1 is a schematic perspective view illustrating the touch detecting device based on optical touch screen overall configuration utility. 本实用新型的光学触控检测装置包括控制模块101,一个以上的安装于触控屏106相邻侧角端的光学传感器102,和一个以上的安装于触控屏106侧壁的主动线性光源组件103 ;所述控制模块101通过连接线分别与所述光学传感器102和所述主动线性光源组件103相连接。 The present invention comprises the optical touch detection device control module 101, one or more touch screen 106 is mounted adjacent to the active components of the linear light source 103 of the optical sensor angle end side 102, and one or more side walls attached to the touch screen 106 ; the control module 101 is connected to the optical sensor 102 and the active components of the linear light source 103 through the connection line, respectively. 当有触控物体,例如:人的手指105进入所述触控屏106时,所述控制模块101驱动所述主动线性光源组件103以配合所述光学传感器102采集光信号,此时光学传感器102会因为主动线性光源组件103所发出的光被人的手指105遮挡,而产生一个变化的光信号即产生相应的暗区,根据这一变化的光信号,控制模块101对所述光学传感器102采集到的图像图形数据进行处理,计算出触点104的坐标,从而检测出触控点的位置。 When there is a touch object, such as: a human finger 105 into the touch screen 106, the control module 101 drives the active linear light source assembly 103 to fit the optical sensor 102 collecting light signal, the optical sensor 102 at this time active because the light emitted by the linear light source assembly 103 is blocked 105 human fingers, to generate a change in an optical signal that is generated corresponding to dark regions, this change of optical signal, control module 102 of the optical sensor acquired 101 pairs the graphics data to the image processing, calculates the coordinates of the contact 104, thereby detecting the position of the touch point.

[0019] 有必要说明的是,主动线性光源组件103的作用是在触控屏106周围发出均勻漫射线光源,以克服目前反光薄膜所反射的被动光源的光强不均勻的问题。 [0019] is necessary to explain the role of the active components of the linear light source 103 is emitted uniformly diffuse light rays around the touch screen 106, the current intensity in order to overcome non-uniform passive film reflective light reflected. 为了达到更大的光强输出及特殊功能应用,本实用新型的控制模块101还可以对主动线性光源组件103进行编码脉冲驱动,以协调光学传感器102的光信号采集。 In order to achieve greater light intensity output and special function application, the present invention the control module 101 may also be driven active linear encoder pulse light source assembly 103 to coordinate the optical sensor 102, signal acquisition. [0020] 由于本实用新型采用主动线性光源组件103发出的线性光,取代目前借由反光薄膜反射背光光源所发出的被动光源,可以使整个触控屏的光强更强、更均勻,另外,由于是主动光源发光,减少了去程光线因为触控物体反光而造成干扰或误识别等问题,从而提高了触控检测的准确性。 [0020] Since the present invention uses linear light source assembly 103 emits linear active, substituted passive current source by means of a reflective film reflecting light emitted from the backlight, the entire touch screen intensity stronger, more uniform, additionally, since the light source is an active light, is reduced because of the outward light touch reflective objects cause interference or erroneous recognition problems, thereby improving the accuracy of the touch detection.

[0021] 参见图2,图2为主动线性光源组件103的一种实施方式的分组结构示意图。 [0021] Referring to FIG. 2, FIG. 2 is a schematic view of one embodiment of a packet structure of the linear light source assembly 103 active. 如图2所示,本实施例中主动线性光源组件103包括发光光源203和光学振荡腔201 ;所述光学振荡腔201呈半封闭式,腔内涂覆有漫反射涂层(图中未示出),在朝向触控屏的一侧开有出光口207。 2, in the present embodiment the linear light source assembly 103 comprising active light source 203 and the optical cavity 201 oscillations embodiment; oscillation of the optical cavity 201 in a semi-closed, the cavity is coated with a diffusely reflective coating (not shown in FIG. ), a touch screen side facing the light outlet 207 is opened. 在所述主动线性光源组件103中,发光光源203发射的光在光学振荡腔201的腔内被勻化,并通过出光口207射向所述触控屏。 The active component in the linear light source 103, light source 203 is homogenized emitted light in the optical cavity of the oscillation chamber 201, and through the optical port 207 toward the touch screen.

[0022] 具体地,发光光源203可以是红外LED、红外激光发射器或其它红外光源,发光光源203可安装在光学振荡腔201的一端或者两端,或者安装在光学振荡腔201的中间段的补光孔(图中未示出)内。 [0022] Specifically, the infrared light source 203 may be the LED, an infrared emitter laser or other infrared light source, light source 203 may be mounted on one or both ends of the optical cavity 201 of the oscillation or oscillations mounted in the middle section of the optical cavity 201 fill holes (not shown). 光学振荡腔201含有一个不完全封闭的内腔,内腔的形状根据实际需要,可以是任意的有利于光线振荡的形状,并在指向触控屏的一面开有出光口207 ;出光口207的结构形状可以是任意有利于光均勻发射的形状,如图2中所示出光口207为狭缝型,当然也可以是若干狭缝的组合。 Optical oscillation chamber 201 contains a not completely closed lumen, lumen shape according to actual needs, it may have any shape conducive to oscillating light, and touch screen pointing light outlet side is opened 207; 207 of the light outlet structural shape can be any shape conducive to uniform light emission, the light outlet 207 as shown in FIG. 2 is a slit type, of course, it may be a combination of several slits. 光学振荡腔201的作用是使入射光从一端入射后可以向前继续传导,同时可以对入射光进行勻化,得到均勻一致的光强,勻化后的红外光通过光学振荡腔201的出光孔207射向整个触控屏。 The optical effect is the oscillation chamber 201 continues to conduct the incident light can be forwardly from the rear end of the incident, the incident light can be simultaneously homogenized to obtain a uniform light intensity, the infrared light passes through the homogenizer optical oscillation light hole 201 lumen 207 fired the entire touch screen.

[0023] 较佳地,所述主动线性光源组件103还可以包括光源基座205 ;发光光源203安装在所述光源基座205上;当光源基座205安装到光学振荡腔201时,所述发光光源203光轴的方向与所述光学振荡腔201的内腔轴线平行(图2所示的为光源基座205和光学振荡腔201分开的切面图)。 [0023] Preferably, the active components of the linear light source 103 may further include a light source base 205; light source 203 mounted on the base 205 of the light source; when the base 205 is mounted to the light source optical oscillation chamber 201, the the optical axis direction of light source 203 and the optical axis is parallel to the oscillation chamber lumen 201 (shown in FIG. 2 for the oscillation light source substrate 205 and the optical cavity 201 in FIG separate section). 在光学振荡腔201与所述光源基座205的内安装面上可以涂覆镜面或漫反射涂层。 In the optical oscillation chamber 201 and the light source mounting surface of the inner specular or diffuse reflective coating may be a coating of base 205. 采用光源基座的方式,有利于将主动线性光源组件103整体固定在触控屏侧壁上。 A light source base, which benefit will be active on the linear light source 103 is integrally fixed to the touch screen assembly sidewall.

[0024] 较佳地,所述主动线性光源组件103还可以包括光源聚光单元204,可将光源聚光单元204安装在光源基座205上或安装在光学振荡腔201的入光面上;所述光源聚光单元204具有聚光功能,呈聚光杯型,其表面涂覆有镜面或漫反射涂层,可以将所述发光光源203发出的红外光聚集导入所述光学振荡腔201内。 [0024] Preferably, the active components of the linear light source 103 may further include a light source 204 condensing unit, condensing the light source unit 204 may be mounted on the light source mounted in the optical base 205 or the oscillation of the light incident surface of the cavity 201; condensing the light source unit 204 has a function of converging, converging cup shape, its surface is coated with a specular or diffuse reflective coating may be an infrared light source 203 emitted from the light collection optical oscillation introducing the inner cavity 201 . 较佳地,光源聚光单元204可以是光学透镜。 Preferably, the light source unit 204 may be an optical condensing lens.

[0025] 较佳地,所述主动线性光源组件103还可以包括导光单元202,所述导光单元202 安装于所述光学振荡腔201的腔体内,其包括的至少一个端面位于所述光学振荡腔201的入射面上,用于沿所述光学振荡腔201的内腔传导光。 [0025] Preferably, the active components of the linear light source 103 may further include a light guide unit 202, the light guiding unit 202 is mounted within the cavity of the oscillation optical cavity 201, which is located at least one end face of said optical comprise the incident surface of the oscillation chamber 201, a lumen 201 along the optical oscillation light-guiding cavity. 具体地,导光单元202可以是通体出光(侧发光)光纤或其它经过处理的光波导介质,其作用是沿着光学振荡腔201的内腔传导光,同时向腔内散射一部分光,这可以通过一定的结构或工艺来实现光的散射,所述结构及工艺包括刻蚀、掺杂、机加工并电镀等。 Specifically, the light guide unit 202 may be whole body light (side emitting) optical fiber or other optical media after treatment, its role is the transmission of light along the optical lumen 201 of the oscillation cavity, while a part of the light scattered to the cavity, which can be achieved by a certain light scattering structures or processes, and the structure comprises etching process, doping, machining and plating. 该导光单元202含有至少一个入光面,该入光面可以是两个端面也可以是其它与发光物的接合面,其出射光的形式可以是连续出光,也可以是有若干出光面出光。 The light guide unit 202 comprises at least a light incident surface, the surface may be the two end faces may be other bonding surface of the light emitting material, the light emitted form the light may be continuous, there may be a plurality of light emitting surface . 导光单元202的安装数目可以是一个,也可以是多个,视光强要求而定。 The number of installation of the light guide unit 202 may be one, or may be a plurality, depending on the light intensity requirements.

[0026] 较佳地,所述主动线性光源组件103还可以包括出光聚光单元206,所述出光聚光单元206安装在光学振荡腔201的出光口207处,用于集中出光口207向触控屏106发射的光,使得光学传感器上接收到的光强更强。 [0026] Preferably, the active components of the linear light source 103 may further include a light condensing unit 206, the light condensing unit 206 installed at the light exit chamber 201 of the optical oscillation 207 for opening 207 to focus light touch emitted light control panel 106, such that the stronger the light intensity received by the optical sensor. 具体地,该出光聚光单元206可以是一个光学柱面镜,其具体结构形式依据出光口207的结构而定。 Specifically, the light condensing optical unit 206 may be a cylindrical mirror, and its specific structure depending on the structure of the light outlet 207 depends.

[0027] 上述主动线性光源组件103实施方式中所包括的光学振荡腔201为一单振荡腔体式结构。 [0027] The active components of the linear light source 103 optically embodiment mode oscillation chamber 201 is included in an oscillating single-body structure cavity. 为了进一步勻化触控屏106内的光强分布,光学振荡腔201还可以是多腔组合的多级振荡腔体式结构,如图3所示。 For light in the touch screen 106 further homogenized intensity distribution, the optical cavity 201 may also be oscillating multi-stage multi-cavity structure oscillating CAVITY combined, as shown in FIG.

[0028] 参见图3,图3为主动线性光源组件103的另一种实施方式的分组结构示意图。 [0028] Referring to FIG. 3, FIG. 3 is a schematic view of a packet structure of another embodiment of active linear light source assembly 103 of FIG. 本实施例中主动线性光源组件103包括发光光源305和光学振荡腔301 ;所述光学振荡腔301 为多腔组合,包括初级腔303和次级腔302,在所述初级腔和次级腔的内腔分别涂覆有漫反射涂层(图中未示出);所述初级腔303呈半封闭式,在朝向所述次级腔302的一侧开有出光孔308,所述次级腔302在朝向触控屏的一侧开有出光口310。 Active embodiment the linear light source assembly 103 of the present embodiment includes a light source 305 and optical oscillation chamber 301; the optical cavity 301 is a multi-cavity oscillation composition, comprising a primary chamber 303 and secondary chamber 302, secondary chamber and the primary chamber lumen are coated with a diffusely reflective coating (not shown); said primary chamber 303 in a semi-closed, on the side facing the secondary chamber 302 are opened in the light hole 308, the secondary chamber 302 touch screen on the side facing the light outlet 310 is opened. 初级腔303和次级腔302可使入射光从一端入射后向前继续传导,同时可以对入射光进行勻化,以得到均勻一致的光强;采用初级腔和次级腔相结合的方式,可以进一步加强光线的均化效果。 Primary cavity 303 and secondary cavity 302 allows the incident light continues to conduct forwardly from the rear end of the incident, the incident light can be simultaneously homogenized to obtain a uniform light intensity; by way of the primary chamber and the secondary chamber combination, you can further enhance the effect of homogenizing the light. 所述发光光源305出射的光在所述初级腔303内被勻化,并通过出光孔308向次级腔302射出勻化后的红外光,次级腔302将所述初级腔303出射的光进一步勻化后通过出光口310射向触控屏。 The light source 305 emitted light is homogenized in the primary chamber 303, apertures 308 and 302 through the light emitting infrared light after homogenization to the secondary chamber, the secondary chamber 302 to the chamber 303 of the primary light emitted after further homogenized by a touch screen 310 toward the optical port.

[0029] 具体地,发光光源305可以是红外LED、红外激光发射器或其它红外光源,安装在光学振荡腔301的初级腔303 —端或者两端,或者安装在光学振荡腔301的中间段的补光孔内(图中未示出)。 [0029] Specifically, the infrared light source 305 may be the LED, an infrared emitter laser or other infrared light source mounted in the cavity 301 of the primary optical oscillation chamber 303-- end or both ends, or mounted in the middle section of the optical cavity 301 of the oscillating fill hole (not shown). 次级腔302的出光口310的结构形状可以是任意有利于均勻出光的形式,图3中所示出光口310为狭缝型,也可以是若干狭缝的组合。 The light outlet of the secondary structure and shape of the cavity 302 310 may be any form to facilitate uniform the light, as shown in FIG light outlet slit type 3310 may be a combination of several slits.

[0030] 较佳地,所述主动线性光源组件103还可以包括光源基座304 ;所述发光光源305 安装在所述光源基座304上,所述光源基座304的内表面上涂覆有镜面或漫反射涂层;当光源基座304安装到光学振荡腔301时,所述发光光源305的光轴方向与所述初级腔303的内腔轴线平行(图3所示的为光源基座304和光学振荡腔301分开的切面图)。 [0030] Preferably, the active components of the linear light source 103 may further include a light source base 304; the light source 305 mounted on the base 304 of the light source, the light source 304 on the inner surface of the base is coated with specular or diffuse reflective coating; when the base 304 is mounted to the light source optical oscillation chamber 301, the light source 305 and the optical axis direction is parallel to the axis of said light source base lumen of the primary chamber 303 (FIG. 3 304 and optical oscillation section 301 in FIG separate chambers). 采用光源基座304的方式,有利于将主动线性光源组件103整体固定在触控屏侧壁上。 A light source base 304, which benefit will be active on the linear light source 103 is integrally fixed to the touch screen assembly sidewall.

[0031] 较佳地,所述主动线性光源组件103还可以包括光源聚光单元306,所述光源聚光单元306可以安装在光源基座304上、或安装在光学振荡腔的初级腔303的入光面上;所述光源聚光单元306呈聚光杯型,具体可为光学透镜,其表面涂覆有镜面或漫反射涂层,可以将所述发光光源305发出的红外光聚集导入所述光学振荡腔301的初级腔303内。 [0031] Preferably, the active linear light source assembly 103 also may include a light condensing unit 306, the light source unit condensing the light source 306 may be mounted on the base 304, or installed in the primary chamber 303 of the optical cavity oscillation light-receiving surface; condensing the light source unit 306 as a condensing cup, particularly may be an optical lens surface is coated with a specular or diffuse reflective coating may be an infrared light source 305 emitted from the light collection by introducing said primary chamber 303 within the cavity 301 of the optical oscillation.

[0032] 较佳地,所述主动线性光源组件103还可以包括导光单元307,所述导光单元307 安装于所述光学振荡腔301的初级腔303的腔体内,导光单元307包括的至少一个端面位于所述初级腔303的入射面上,用于向所述初级腔303的内腔传导光。 [0032] Preferably, the active components of the linear light source 103 may further include a light guiding unit 307, the light guiding unit 307 is attached to the primary lumen of the oscillation optical cavity 301 of the cavity 303, the light guide unit 307 comprises at least one end face positioned on the incident surface of the primary chamber 303 for conducting light into the lumen of the primary chamber 303.

[0033] 具体地,导光单元307可以是通体出光(侧发光)光纤或其它经过处理的光波导介质,其作用是沿着光学振荡腔301的初级腔303内腔传导光,同时向腔内散射一部分光。 [0033] Specifically, the light guide unit 307 may be whole body light (side emitting) optical fibers or other optical media treated, its role is the transmission of light along the optical cavity 303 of the primary lumen of the oscillation chamber 301, while the cavity a portion of the scattered light. 该导光单元307含有至少一个入光面,该入光面可以是两个端面也可以是其它与发光物的接合面,其出射光的形式可以是连续出光,也可以是有若干出光面出光。 The light guide unit 307 comprises at least a light incident surface, the surface may be the two end faces may be other bonding surface of the light emitting material, the light emitted form the light may be continuous, there may be a plurality of light emitting surface . 导光单元307的安装数目可以是一个,也可以是多个,视光强要求而定。 The number of installation of the light guide unit 307 may be one, or may be a plurality, depending on the light intensity requirements.

[0034] 较佳地,所述主动线性光源组件103还可以包括出光聚光单元309,所述出光聚光单元309安装在光学振荡腔301的次级腔302的出光口310处,用于集中出光口310向触控屏106出射的光,使得光学传感器上接收到的光强更强。 [0034] Preferably, the active components of the linear light source 103 may further comprise an optical interface 310 a light condensing unit 309, the light converging optical oscillation unit 309 is mounted in the secondary chamber 301 of cavity 302, for concentrated light port 310 toward the light emitted touch screen 106, such that the stronger the light intensity received by the optical sensor. 该出光聚光单元309可以是一个光学柱面镜,其具体结构形式依据出光口310的结构而定。 The light-condensing optical unit 309 may be a cylindrical mirror, and its specific structure depending on the structure of the light port 310 may be. [0035] 本实用新型的主动线性光源组件103包括的光学振荡腔(201、301)能够将发光光源出射的光勻化后向所述触控屏106出射,使触控屏106内的光强分布均勻,并提高光学传感器102接收到的光强,从而当有触控物体进入触控屏106时,控制模块101能够准确检测出触控点的坐标信息。 Optical oscillation chamber (201, 301) [0035] The present invention active linear light source assembly 103 includes a light source capable of emitting light homogenizer 106 after exiting the exit to the touch screen, the light intensity in the touch screen 106 distribution, and increase the light intensity received by the optical sensor 102, so that when there is a touch object enters the touch screen 106, the control module 101 can accurately detect the coordinate information of the touch point. 另外,由于光学振荡腔的出光口(207、310)可以加工成狭缝型结构, 使得位于触控屏上方的结构尺寸很小,从而有利于大尺寸光学触控检测装置的应用,适用于对外型美观及结构紧凑方面有较高要求的场合。 Further, since the optical oscillation light outlet chamber (207,310) can be processed into a slit type structure, so that the size of the structure is located above the touch screen is small, thereby facilitating large-size optical touch detection apparatus, applies to foreign type compact appearance and higher aspect occasion required.

[0036] 应当理解,以上借助优选实施例对本实用新型的技术方案进行的说明是示意性的而非限制性的。 [0036] It should be understood that the above described embodiments of the embodiments of the present invention is the technical solution as illustrative and not restrictive by preferable. 本领域的普通技术人员在上述实施例的基础上可以对各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换;而这些修改或者替换,都应涵盖在本实用新型的保护范围之内。 Those of ordinary skill in the art may be carried out on the basis of the above-described embodiments of the technical solutions described in each of the modified embodiments, some technical features or equivalent replacements; such modifications or replacements shall fall in the present invention within the scope of protection. 因此,本实用新型的保护范围应该以权利要求的保护范围为准。 Accordingly, the scope of protection of the present invention should be defined by the scope of the claims.

Claims (12)

1. 一种基于触控屏的光学触控检测装置,其特征在于,包括控制模块、一个以上的安装于触控屏相邻顶角处的光学传感器、和一个以上的安装于触控屏侧壁的主动线性光源组件;所述控制模块分别与所述光学传感器和所述主动线性光源组件相连接;所述主动线性光源组件包括发光光源和光学振荡腔。 An optical touch screen touch detection apparatus based on, characterized in that it comprises a control module, one or more touch screen mounted adjacent to the optical sensor at the apex, and one or more of a touch screen attached to the side active linear light source assembly wall; said control module are respectively connected to the active optical sensor and the linear light source assembly; the active light source comprises a linear light source assembly and optical oscillation cavity.
2.根据权利要求1所述的装置,其特征在于,所述发光光源安装在所述光学振荡腔的一端或者两端,或者安装在所述光学振荡腔的中间段的补光孔内;所述光学振荡腔内涂覆有漫反射涂层,并在朝向触控屏的一侧开有出光口。 2. The apparatus according to claim 1, wherein said light source is mounted at one or both ends of the oscillation optical cavity, or mounted in the intermediate section of the bore of fill light oscillation of the optical cavity; the oscillating said optical cavity coated with a diffusely reflective coating, and the side facing the touch screen with a light outlet opening.
3.根据权利要求2所述的装置,其特征在于,所述光学振荡腔朝向触控屏的一侧所开的出光口为狭缝或者为若干狭缝的组合。 3. The apparatus according to claim 2, wherein said optical cavity oscillation touch screen side facing the light outlet opening of a slit or a combination of a plurality of slits.
4.根据权利要求2或3所述的装置,其特征在于,所述光学振荡腔的腔体内包括导光单元;所述导光单元的至少一个端面位于所述光学振荡腔的入射面上。 4. The apparatus of claim 2 or claim 3, wherein said optical cavity includes a cavity oscillation light guiding unit; the light guiding unit is located at least one end face on the incident surface of the optical cavity oscillation.
5.根据权利要求4所述的装置,其特征在于,所述光学振荡腔还包括出光聚光单元,所述出光聚光单元安装在光学振荡腔的出光口处。 5. The apparatus as claimed in claim 4, wherein the optical cavity further comprises an oscillation light condensing means, the mouth of the light beam condensing optical oscillation means mounted in the cavity.
6.根据权利要求4所述的装置,其特征在于,所述主动线性光源组件还包括光源基座; 所述发光光源安装在所述光源基座上,所述光源基座安装在所述光学振荡腔,且所述发光光源的光轴方向与所述光学振荡腔的内腔轴线平行。 6. The apparatus as claimed in claim 4, wherein the active light source assembly further comprises a linear light source substrate; a light source mounted on the base light source, the light source is mounted on the optical base oscillation cavity, and the light source optical axis direction parallel to the optical axis of the lumen of the cavity oscillation.
7.根据权利要求6所述的装置,其特征在于,所述主动线性光源组件还包括光源聚光单元,所述光源聚光单元安装在所述光源基座上,或安装在所述光学振荡腔的入光面上;所述光源聚光单元呈聚光杯型,表面涂覆有镜面或漫反射涂层。 7. The device according to claim 6, wherein the active light source comprises a linear light source assembly further condensing unit, condensing the light source unit is mounted on the base or mounted on the optical oscillation the light incident surface of the cavity; said light condensing unit condensing cup shape, a surface coated with a specularly or diffusely reflective coating.
8.根据权利要求2或3所述的装置,其特征在于,所述光学振荡腔为多腔组合,包括初级腔和次级腔,在所述初级腔和次级腔的内腔分别涂覆有漫反射涂层;所述初级腔呈半封闭式,在朝向所述次级腔的一侧开有出光孔,所述次级腔在朝向触控屏的一侧开有出光口。 8. The apparatus of claim 2 or claim 3, wherein said optical cavity is a multi-chamber unit oscillations, comprising a primary chamber and a secondary chamber, the primary lumen and the secondary lumen are coated chamber diffusely reflective coating; enclosed semi said primary chamber, the secondary chamber on the side facing the injection hole is opened, the secondary chamber on the side facing the touch screen with a light outlet opening.
9.根据权利要求8所述的装置,其特征在于,所述光学振荡腔的初级腔的腔体内包括导光单元;所述导光单元的至少一个端面位于所述初级腔的入射面上。 9. The apparatus according to claim 8, wherein said optical cavity primary oscillation chamber cavity includes a light guide unit; the light guiding unit is located at least one end face on the incident surface of the primary chamber.
10.根据权利要求9所述的装置,其特征在于,所述光学振荡腔还包括出光聚光单元, 所述出光聚光单元安装在光学振荡腔的次级腔的出光口处。 10. The apparatus according to claim 9, wherein the optical cavity further comprises an oscillation light converging means, the light output port of said secondary chamber at a light condensing unit mounted in the optical cavity oscillation.
11.根据权利要求9所述的装置,其特征在于,所述主动线性光源组件还包括光源基座;所述发光光源安装在所述光源基座上,所述光源基座安装在光学振荡腔的初级腔,且所述发光光源的光轴方向与所述初级腔的内腔轴线平行。 11. The apparatus according to claim 9, wherein the active light source assembly further comprises a linear light source substrate; a light source mounted on the base light source, said light source mounted in the optical base oscillation chamber primary lumen, cavity axis and the optical axis direction of the light source is parallel to the primary chamber.
12.根据权利要求11所述的装置,其特征在于,所述主动线性光源组件还包括光源聚光单元,所述光源聚光单元安装在所述光源基座上,或安装在所述光学振荡腔的初级腔的入光面上;所述光源聚光单元呈聚光杯型,表面涂覆有镜面或漫反射涂层。 12. The apparatus as claimed in claim 11, wherein the active light source comprises a linear light source assembly further condensing unit, condensing the light source unit is mounted on the base or mounted on the optical oscillation light-receiving surface of the primary cavity of the cavity; said light condensing unit condensing cup shape, a surface coated with a specularly or diffusely reflective coating.
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US10248372B2 (en) 2013-12-31 2019-04-02 Ultravision Technologies, Llc Modular display panels
US10373535B2 (en) 2013-12-31 2019-08-06 Ultravision Technologies, Llc Modular display panel

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* Cited by examiner, † Cited by third party
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US10248372B2 (en) 2013-12-31 2019-04-02 Ultravision Technologies, Llc Modular display panels
US10373535B2 (en) 2013-12-31 2019-08-06 Ultravision Technologies, Llc Modular display panel
US10380925B2 (en) 2013-12-31 2019-08-13 Ultravision Technologies, Llc Modular display panel
US10410552B2 (en) 2013-12-31 2019-09-10 Ultravision Technologies, Llc Modular display panel

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