CN107250855A - 用于光耦合的光学部件 - Google Patents
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Abstract
本发明提供了一种光学部件，其用于在光电设备和界定两个相对边界表面的透光面板之间传输光，该光学部件具有由具有基部表面、侧向前表面和轴线的几何形状形成的形状，其中几何形状由与前表面、基部表面和轴线相交的平面截断，从而形成后表面。基部表面构造成置用于将光学部件安装到透光面板上并用于将光耦合到透光面板中。该前表面构造成使光从前表面穿过基部表面并耦合到透光面板中，以使光通过全内反射在透光面板内传播。
Description
技术领域
本发明涉及一种用于在光电设备和透光面板之间传输光的光学部件，透光面板界定用于触摸感测系统的两个相对的边界表面。多个这样的光学部件可以布置成阵列以将光耦合到透光面板中。
发明背景
触摸感应系统(“触摸系统”)广泛用于各种应用中。通常，通过触摸物体(诸如手指或触针(stylus))直接接触触摸表面或通过接近(即，没有触摸)触摸表面来致动触摸系统。例如，触摸系统用作膝上型电脑的触摸板、用在控制面板中、以及用作例如手持设备(诸如，移动电话)上的显示器的覆盖物，但也可用作较大的设备和显示器上的覆盖物。覆盖在显示器上的或集成在显示器中的触摸面板也称为“触摸屏”。在本领域中许多其它应用是已知的。
存在许多已知的用于提供触摸敏感性的技术，例如，通过将电阻式线栅、电容式传感器、应变仪等集成到触摸面板中。还存在各种类型的光学触摸系统，例如，这些光学触摸系统检测由触摸物体投影到触摸表面上的阴影，或者检测触摸物体的在触摸面板上的点所散射的光。
一种具体类型的光学触摸系统使用光的投影测量(projection measurements)，该光在界定触摸表面的透光面板内部的多个传播路径上传播。因此，当光已经通过面板时，投影测量量化各个传播路径上的光的属性，例如，光的功率。光通过对触摸表面进行全内反射(total internal reflection，TIR)而在面板内部传播，使得触摸表面上的物体促使一个或更多个传播路径上的传播光被衰减，这通常表示为FTIR(Frustrated Total InternalReflection，受抑全内反射)。对于触摸测定，可通过简单的三角测量或通过更高级的图像重建技术来处理投影测量，图像重建技术在触摸表面上产二维扰动分布，即，在触摸表面上的影响测量属性的任何事物的“图像”。这类触摸系统的示例见于US3673327、US4254333、US6972753、US7432893、US2006/0114237、US2007/0075648、WO2009/048365、US2009/0153519、WO2010/006882、WO2010/064983、WO2010/134865和WO2012/105893中。
WO2013/036192公开了一种用于光学触摸面板的光耦合结构，例如用于上述参考文献中的类型的光学触摸面板。耦合结构用于将来自诸如LED的光源的光以适合于在触摸面板中进行TIR(全内反射)的角度入耦合(in-couple)到面板中。光耦合结构相对较大，并占据面板下方大量的空间。然而，用于触摸感测系统的可用空间很少，特别是在其中光电部件安装在电气设备中的触摸面板的外围处。对于具有触摸感测系统的较小设备而言更加成问题。光耦合结构在制造和安装在面板上方面也相对昂贵。最后，可能出现可靠性问题，因为部件和面板之间的温度系数差可能导致性能随着时间的推移而降低。另一个问题是，对于以漫照射引导到玻璃的光学部件而言，大部分光将不会被耦合到面板中。
已经尝试使用膜，该膜具有在透明基板上以阵列布置的圆顶形透镜，用于将来自光源的光耦合到触摸感测系统的面板。具有圆顶形透镜的这种基板例如，在WO2006/034409A2中公开，但是用于将光耦合到触摸感测系统的透光面板中的不同的目的。在该领域中，“关注区域(region of interest)”以角度范围来界定，即以在玻璃(系统构造成从该玻璃获得触摸信号)中行进的光的theta(θ——即，光与面板平面的法线所成的角度)范围和phi(——即，光在面板的平面中与面板的边缘的法线所成的角度)范围来界定。该范围可以选择以获得最佳的触摸分辨率并用于排除污染噪声。在使用TIR的触摸感测系统中，对于在触摸面板中的光的传播而言，面板内的光的关注区域的θ在40°至90°之间，然而优选为50°-75°，且为±75°的范围。这意味着对于圆顶形结构，只有一小部分圆顶形表面以一定角度折射光以在关注区域内经由TIR在面板内传播并且从而提供有效且抗污染的触摸检测。因此，圆顶形的解决方案对于将光入耦合到触摸面板而言不是有效的。因此，需要寻求一种引导光的基元(primitive)的形状，以针对基于通过TIR传播光的触摸感测系统将更多数量的光子以匹配ROI的角度耦合到透光面板中。
本发明解决了将光有效耦合到触摸感测系统的透光面板中的这一广泛认可的需求，并因此提供了改进的功率效率和/或更紧凑的设计。
发明概述
因此，优选地，通过单独地或以任何组合地来提供光学部件、具有多个这样的光学部件的装置以及用于生产该光学部件的方法，本发明的实施方案试图缓解、减轻或消除本领域中的一个或更多个缺陷、缺点或问题，例如上面所确定的那些缺陷、缺点或问题。
本发明由所附权利要求限定。
第一个目的是提供一种光学部件，其用于在光电器件和界定两个相对边界表面的透光面板之间传输光，该光学部件具有对应于具有基部表面、侧向前表面和轴线的几何形状的形状，其中该几何形状由与前表面、基部表面和轴线相交的平面截断，从而形成后表面。基部表面构造成将光学部件安装到透光面板上并将光耦合到透光面板中。前表面构造成使光从前表面穿过基部表面并耦合到透光面板中，以使光通过全内反射在透光面板内传播。
第二个目的是提供一种使用第一实施方案的光学部件的装置，该装置用于在光电器件和界定两个相对边界表面的透光面板之间传输光。该装置包括多个部分重叠的根据前述权利要求中任一项所述的光学部件，这些光学部件形成布置成具有至少一个行的连续元件，在一个行中的相邻光学部件的峰之间具有预定的峰到峰间距，其中峰是光学部件上距离光学部件的基部表面最远的点。
本发明的一些实施方案提供了将光有效地入耦合到透光面板中。
本发明的一些实施方案还提供了用于在光电设备和透光面板之间传输光的具有紧凑设计的光学部件，该光学部件也可以有效地将大量光子耦合到透光面板。
本发明的一些实施方案还提供了用于在光电设备和透光面板之间传输光的光学部件，该光学部件是移位不可变的。
本发明的一些实施方案提供了将光学部件紧邻玻璃面板安装，并且可以获得空间有效的装置。
术语“包括(comprises)/包括(comprising)”当在本说明书中使用时应理解为指定了所陈述的特征、整数、步骤或部件的存在，但不排除一个或更多个其它特征、整数、步骤、部件和/或它们的组的存在或添加。
附图简述
本发明的实施方案能够实现的这些方面、特征和优点以及其它方面、特征和优点从以下参考附图对本发明的实施方案进行的描述将是明显的并被阐述，在附图中：
图1是光学部件的示例的透视图；
图2是示出光学部件的示例的几何原理的横截面图；
图3a是示出光学部件阵列的示例的几何原理的俯视图；
图3b是示出光学部件阵列的示例的几何原理的透视图；
图4是用于生产光学部件阵列的示例性方法的流程图；以及
图5a是示出了包括光学部件的示例性触摸感应系统的横截面图且图5b是示出了包括光学部件的示例性触摸感应系统的框图。
图6是示出来自光源的光在面板内传播所采取的可能路径的横截面图。
图7示出了其中图3b的光学部件被反形的本发明的实施方案。
实施方案的描述
现在将参照附图来描述本发明的具体实施方案。然而，本发明可以以很多不同的形式体现，且不应被解释为限于在本文中阐述的实施方案；相反，提供这些实施方案使得本公开将是透彻和完整的，并将会使本发明的范围完全传达给本领域的技术人员。在附图中示出的实施方案的详细描述中所使用的术语不旨在限制本发明。在附图中，相同的标记表示相同的元件。
参考仅作为示例的使用了用于光传播和光检测的全内反射(TIR)和受抑全内反射(FTIR)的触摸感测系统，给出了本发明的当前说明书。
图1示出了光学部件1，光学部件1用于在光电设备2a、2b(图5a)和界定两个相对的边界表面的透光面板3(图5a)之间传输光。光学部件1包括基部表面6，基部表面6用于通过折射率匹配将光耦合到面板3中。基部6也可用于将光学部件1安装到面板3上。前表面7相对于基部6布置，用于朝向基部6引导和重定向来自前表面7的光，以在关注区域内通过TIR在面板3内传播。前表面7从基部延伸到与基部6相对的脊部8a。峰8是从基部6垂直地朝向前表面7和后表面9的交线测量的光学部件1的沿着脊部8a的最高点。后表面9从基部延伸到脊部8a。诸如发射器2a(图5a)的光源可以布置成以大体上正交于前表面7的一部分的角度引导光。因此，朝向光学部件1引导的光将被耦合到光学部件1中，并且以合适的角度被折射，以当经由基部表面6耦合到面板3时通过TIR传播。
在图2中可以看出，光学部件1在穿过基部6、前表面7和后表面9的竖直横截面上具有楔形形状。该竖直横截面沿从峰8垂直朝向基部6的轴线来截取。因此，本文中所使用的楔形件意味着光学部件1在横截面上具有一个尖端和一个较厚端。尖端在后表面9和基部6的交线处形成，并且较厚端由前表面7形成，特别是在峰8处形成。在本文中，前表面7也被称为耦合表面，这是因为其用于将光耦合到光学部件1中。后表面9在本文中被称为倾斜表面，这是因为其从光学部件1的较厚端朝向较细端倾斜。根据用于几何锥形的公知的定义，图2的光学部件1也可以被描述为具有半径r、基部表面6、侧向前表面7和轴线的截断锥体。锥体被与前表面、基部表面和轴线相交的平面截断，形成后表面9。
在一些实施方案中，前表面7从基部6朝向峰8延伸，并相对于基部6以恒定的角度倾斜。虽然前表面7和基部表面6之间的边缘可以描绘成圆弧或圆，但是前表面7和基部表面6之间的角度在沿着所述圆弧或圆的每个点处是恒定的。后表面9可以形成从基部6朝向峰8相对于基部6以一定的角度延伸的倾斜表面，该角度小于前表面7相对于基部6的至少一个角度。因此，形成楔形几何形状，该楔形几何形状允许将来自发射器的光在关注区域内耦合到面板中，同时排除该关注区域外的光。
前表面7可以相对于基部6以至少一个固定角度倾斜。因此，由于前表面7以固定角度倾斜，所以在光学部件1的轴向方上，整个前表面7可以用于将光子在关注区域内耦合到面板3中。由此，提供了光子的有效耦合。这与圆顶形表面不同，圆顶形表面在耦合表面和基部6之间具有连续变化的角度，其中对于TIR有用的光仅关于耦合表面的一部分被耦合。因此，根据本发明的基元对光的入耦合提供了增加的效率。
在图1的实施方案中，前表面7形成锥形表面的一部分。使用锥形表面的一部分提供了光在平行于边界表面201、202(图5a)的方向上的发散(divergence)。锥形表面的尺寸和形状影响发散。尺寸和形状的实施方案在下面进行了进一步界定。为了获得关于发散的更多细节，参考了WO2013/036192，其通过引用并入本文以用于所有目的，特别是关于光的通过TIR的传播、发散以及与适当地将光耦合到面板3中有关的入射角的范围。
在一些实施方案中，前表面7形成棱镜表面，例如在光学部件1的基部6处具有其基部且在峰8处具有其顶点的多个三角形表面或多个锥截面。因此，前表面不必是完全光滑的。对于棱镜表面的每个部分，棱镜表面相对于基部6以至少一个固定角度倾斜。因此，棱镜表面可以具有多个表面，该多个表面在光学部件1的沿着从基部6朝向峰8垂直延伸的轴线截取的单个横截面处相对于基部6以至少一个固定角度倾斜。
后表面9提供对处在适合于在关注区域内通过TIR在面板3中传播的光的范围之外的朝向光学部件1引导的光进行反射或折射。可以选择基部6和后表面9之间的角度β，使得后表面9被在关注区域内传送到面板中的最少数量的来自发射器的光线射中。类似地，可以选择β，使得后表面9被从面板传出到检测器的最少数量的光线射中。在优选实施方案中，对于由发射器传送并由检测器成功接收的光，通过后表面9的光的量小于5％，而通过前表面7的光的量至少为95％。对于通过前表面7的上述光，在关注区域内耦合到面板之前，小于5％的光将反射在后表面9上。β的在20°和60°之间的最佳范围已经被确定为在将光在关注区域内耦合到面板中方面是最有效的，其中优选实施方案具有40°的β值。
在另一个实施方案中，光学部件1可以包括具有半径r、基部表面、前表面和轴线的截断圆柱体形状。圆柱体由与前表面、基部表面和轴线相交的平面截断，形成与表面9在同一平面上的后表面。
上述几何形状的统一的原理是提供用于接收光的前表面和用于使在光学部件内行进的光反射到面板中的大体平坦的表面9。
后表面9可以涂覆有反射涂层，诸如使用例如铝溅镀来涂覆的镜面。由此，可以增强后表面9的反射特性，以提供用于过滤环境光的有效的角度过滤器。在本发明的一个实施方案中，Al、Ag、Au或Cu的真空镀膜(vacuum deposition)用作镜面涂层的材料。
前表面7和后表面9的交线，即从基部6的一侧朝向峰8并在基部6的相对侧上返回到基部6形成弯曲的脊部8a，例如弧形的脊部，脊部8a相对于基部6倾斜。在一些实施方案中，弯曲边缘围绕基部6延伸不到360°，如图1中所示。弯曲的脊部8a的延伸程度，以及因此前表面7在光学部件1的侧向方向上的延伸度可用于构造耦合到面板3中的光的phi分布。在一些实施方案中，交线可以形成圆锥曲线。
在图2中可以看出，在一些实施方案中，光学部件1基于以虚线示出的锥体10来设计。锥体的顶部部分在倾斜于三角形轴线的平面处被切去并且切断锥体的母线。因此，根据该平面相对于锥体10的顶点的位置，形成椭圆形或半椭圆形表面，该椭圆形或半椭圆形表面形成后表面9。锥体10的锥形表面的其余表面为锥形表面的形成前表面7的部分。在优选实施方案中，锥体是直圆锥体，其具有在基部表面6的中心正上方对齐的顶点，并且其中基部表面6具有圆形形状。
图2示出了光学部件1的实施方案的一些几何方面，该光学部件1处于沿着光学部件1的竖直轴线在峰8处即在光学部件1的最高点处截取的横截面中。基部6的最大基部半径r仅受制造方法和机械尺寸约束条件的限制。应当理解，半径r可以以其它方式被缩放，而不限制其光学功能。在本发明的优选实施方案中，用于卷对卷UV树脂复制的典型半径r为30微米。应当注意，基部半径从由其设计光学部件1的锥体10的中心来测量。
图3a示出了用于在光电设备和面板3之间传输光的装置20。该装置包括根据本发明的实施方案的多个光学部件21a、21b、21c、21d，这些光学部件可以形成光学部件阵列。光学部件1、21a、21b、21c、21d是微米到毫米范围内的基元。因此，该装置形成用于将光耦合到面板3中的非常紧凑的设计，其中该装置包括形成连续元件的部分重叠的部件。在图3a的实施方案中，示出了光学部件行的重复图案的峰到峰的距离dy。不同行的光学部件的峰之间的间距被称为行间峰间距(inter-peak spacing)，并且可以是dy/2。行间峰距离是从光学部件的一个行到光学部件的另一行垂直测量的。一行的峰可以沿着一条轴线例如x轴相对于相邻行的光学部件移位，诸如图3a中所示的。优选地，行相对于彼此以使一行对另一行的阴影最小化的方式移位，即，从光源到达第一行的光的量不会因比第一行更靠近光源的第二行投射的阴影而显著减小。在一些实施方案中，行间峰间距可以在75μm的区域内。在一个优选实施方案中，一行中的各个峰沿着x轴(即，该行沿着其延伸的轴线)，相对于相邻行的光学部件移位该行的相邻光学部件的峰之间的峰到峰距离dx的一半。
此外，图3a示出了光学部件21a、21b、21c、21d可以布置在至少一行中，在单个行的相邻光学部件的峰之间具有预定的峰到峰距离dx，该预定的峰到峰距离dx被称为行内峰间距(intra-peak spacing)。在优选实施方案中，行内峰间距可以在70μm的区域内。光学部件21a、21b被布置在多个行中，在不同的行中的光学部件(例如第一行中的光学部件21a、21b和第二行的光学部件21c、21d)之间具有预定的峰到峰距离，这形成光学部件的阵列。应当注意，行内峰距离影响随着行内峰距离趋向于零，将限制到入射到光学部件的材料的光的临界角。
因此，对于光学部件的至少一行的所有光学部件而言，行内峰间距可以是相同的。在一些实施方案中，对于该装置的所有光学部件，行内峰间距是相同的。在其它实施方案中，行内峰间距在该行的光学部件之间变化。在其它实施方案中，单行内的行内峰间距是固定的，而不同行之间，行内峰间距变化。行内峰间距影响前表面7的从基部6的一侧到基部6的相对侧的横向宽度，从而可以通过优化行内峰间距获得耦合到面板中的光的所需的值。
因此，当该装置包括多行光学部件时，从连接第一行的峰的线到连接相邻的第二行的峰的线垂直测量的行间峰距离可以大于行内峰间距。
优化行内峰间距dx以及行间峰间距dy/2提供了适于光源照射角度的光学部件21a、21b的优化阵列或图案。因此，装置20可以适应于具有特定位置的特定光源。因此，装置20的实施方案提供了用于将光耦合到触摸系统的面板3的光学部件21a、21b的灵活设计。
在本发明的一个实施方案中，例如，使用移位可变设计(shift variant design)。移位可变设计(即，不均匀重复并且包括光学部件的定制的布置的设计)是更加公差敏感的、更昂贵且难以生产，并且实现起来不那么普遍。然而，如果可以实现所需的公差，则移位可变设计可以显著地更加高效地将光耦合到面板中以及将光从面板中耦合出来。移位不变设计(shift invariant design)(即，均匀重复的使得部件的光学性质在整个布置中大体相同的设计)需要较低的公差，但是在将光耦合到面板中以及将光从面板中耦合出来方面，效率较低。
在本发明的一个实施方案中，分别在部件之间和行之间的行内峰间距dx和行间峰间距dy的校准是随机确定的。
如图3b中所示，光学部件或光学部件的装置(arrangement)20可以布置在角度过滤器610(在图6中示出)上。角度过滤器可以配置为反射相对于基部6和角度过滤器的法线低于50°的光。因此，角度过滤器可以过滤穿过面板3朝向基部6入射的环境光。
如图3b中所示，形成在前表面7和后表面9的交线处的边缘rt可以是圆形的。该圆形边缘可以具有约6-14μm，例如8-12μm的半径。在一些实施方案中，谷部rb形成在前表面7与周围光学部件的后表面9相交的交线处。谷部可以是弯曲的，例如具有约1-6μm，例如2-4μm的半径。
图6以横截面示出光学部件的装置20。在所示出的实施方案中，光学部件20安装在PET基板620上，其中角度过滤层610在PET基板620和玻璃600之间。示出了来自发射器640的光学路径650、660和670。首先，光学路径650示出了从发射器640以使光反射离开后表面9朝向前表面7反射的角度发出的光，其中光在关注区域内折射到面板中。其次，光学路径660示出了从发射器640以大体上正交于前表面7的一部分从而使光穿过前表面7的角度发出的光，其中光在关注区域内折射到面板中。第三，光学路径670示出了从发射器640以使光穿过前表面7的角度发出的光，其中光折射到后表面9上，其中光在关注区域内反射到面板中。将光在关注区域内耦合到面板中的其它更复杂的路径是已知的，但在此不再描述。然而，不遵循这三条路径之一的绝大多数的光将不被检测器接收到。
图7示出了本发明的实施方案，其中保留了上述构思，但是光学部件20的形状被反转。可以设想，图7中所示的形状可以用作用于冲压或压印图3b的形状的制造工具。类似地，图3b的形状可以用作用于冲压或压印图7的形状的制造工具。图7的形状的光学性质提供了与图3b的形状非常相似的功能性，并且可以被选择为将来自光源的光在关注区域内耦合到面板中的合适的替代方案。
图4示出了一种方法，该方法用于构造用于生产根据本发明的实施方案的光学部件阵列的工具。
在步骤100中，生产光学部件的阵列。以下实施方案描述了用于生产光学部件的阵列的技术。
在一个实施方案中，工具构造有第一列光学部件，该第一列光学部件布置成在邻近行的相邻光学部件的峰之间具有行间峰间距，例如该行间峰间距在上面界定的范围内。第二列光学部件布置成在同一行的峰之间具有行内峰距离。行间峰间距可以设定在上面界定的范围内。行内峰间距和/或行内峰间距可以被预定。此外，光学部件可以以多于两行的光学部件来布置，其中在相邻行之间具有变化的行间峰间距。类似地，行内峰间距可以在单行的光学部件之间变化。因此，至少一行的光学部件可以布置成具有变化的行内峰间距。然后该工具用于生产光学部件的阵列，优选地通过冲压(stamping)或压印(embossing)。
光学部件的阵列可以通过在基板中铸造来生产。基板大体上是透明的，并且可以由诸如聚对苯二甲酸乙二醇酯(PET)、聚碳酸酯、PMMA或其它合适的材料的聚合物制成。
在本发明的优选实施方案中，光学部件20布置在基板的一侧上。提供了一行在先前行上的轻微重叠，其中前表面7布置在先前行的光学部件的至少一个后表面9的顶部上。类似地，同一行内的光学部件设置有轻微的重叠，如在图3a和图3b中看到的。可以使用与基板相同类型的材料来生产光学部件。因此，基板可以形成光学部件1的基部6。在另一个实施方案中，光学部件被压印到附接到面板的挤压塑料带条上。在另一个实施方案中，光学部件使用在面板上对树脂进行UV压印形成。
在步骤110中，为角度过滤器610(图6中示出)设置粘合剂层620。
在步骤120中，通过粘合剂层620将基板固定到角度过滤器610(图6中示出)。
在可选的实施方案中，通过直接压印角度过滤器610来形成光学部件20。
图5a和图5b示出了包括根据本发明的实施方案的装置20的触摸感测系统200的实施方案。在图5a-5b中，该装置在面板的后表面201上布置在面板3(还包括前表面202)的外围。在优选实施方案中，装置20定位成使得对于每个发射器，其中phi等于零的角度对应于面板的在发射器的位置处的边缘的法线。
图5a中仅示出了面板3的左右部分。后表面201和前表面202是边界表面,边界表面界定用于光信号或光203的传播路径。发射器2a在光学部件的装置20a处布置在面板3的一侧，并且检测器2b在光学部件的另一装置20b处布置在面板3的另一侧。装置20a和装置20b可以是沿着面板3的整个侧边或围绕面板3的整个周边的连续图案的一部分。发射器2a和检测器2b是可以发出/检测光并连接到各控制器和其它电气部件的光电设备。例如，光203可以从发射器204传播到检测器205，并且通过装置20耦合到面板3中并从面板3中耦合出来。可以在每个发射器2a和/或检测器2b处提供光学部件的单独的装置或阵列。每个发射器2a或多个发射器204a也可以与诸如图5b所示的多个检测器中的检测器205a，205b成对地布置。
设想了具有呈带条形式或各种形状的装置20的实施方案。在本发明的实施方案中，装置20用于将来自发射器的光在关注区域内耦合到面板中，以及将关注区域中的光从面板中耦合出来并耦合到检测器。如在整个本申请中所描述的，用于将光从面板中耦合出来的光学通路等同于将光耦合到面板中的相反的光学通路。对于入耦合，本发明提供了使在关注区域内耦合到面板的光的量最大化的优点。对于出耦合，本发明提供了仅将关注区域中的光从面板耦合出来到达检测器的优点，从而将可能已经在玻璃中传播的环境光过滤出关注区域外。如图5b中所示，触摸感测系统200可以包括启动控制器210，启动控制器210被连接以选择性地控制或调节光发射器204a、204b的启动，以及可能地包括触摸控制器211以选择性地检测或提供来自检测器205a、205b的数据的读出。启动控制器210和触摸控制器211也可以以用于控制触摸感测系统的单个控制器212实现。根据实现方案，发射器204a、204b和/或检测器205a、205b可以顺序地或同时启动，例如，如在WO2010/064983中所公开的。触摸控制器210和启动控制器211中的一个或两个可通过储存在存储单元213中的软件来至少部分地实现并且通过处理单元来执行。主控制器214可以连接到显示控制器215，显示控制器215构造成基于来自主控制器214的控制信号在显示设备216上生成用户界面。因此，主控制器214是可操作的以将显示设备216上的用户界面与来自触摸检测系统的数据(例如来自触摸控制器211的触摸数据)相协调。
如本文中所使用的，“光发射器”或“发射器”可以是能够发射所需波长范围的辐射的任何类型的光电设备，例如二极管激光器、VCSEL(垂直腔面发射激光器)、LED(发光二极管)、电子或光学发光OLED、显示像素、量子点等。光发射器也可以由光纤的端部形成。
类似地，“光检测器”或“检测器”可以是能够将光转换成电信号的任何类型的光电设备，例如光检测器、CCD设备、CMOS设备、OLED、量子点设备等。光检测器/传感器可以响应于由光发射器产生的光。可选地，光检测器/传感器可以响应于不同的波长范围，例如，如果来自光发射器的光在到达光检测器之前经历波长转换的话。
当在下面的权利要求中使用时，术语“包括(comprise)”、“包括(include)”、“具有”及其词形变化意指“包括但不限于”。
参考特定的实施方案，已经在上面描述了本发明。然而，在本发明的范围内，与上面所描述的实施方案不同的其它实施方案同样是可能的。在本发明的范围内，可以提供与上面所描述的不同的方法步骤。本发明的不同特征和步骤可以以除了所描述的组合之外的其它组合来组合。本发明的范围仅受所附专利权利要求的限制。
Claims (14)
1.一种光学部件，用于在光电设备和界定两个相对的边界表面的透光面板之间传输光，
所述光学部件具有对应于具有基部表面、侧向前表面和轴线的几何形状的形状，其中所述几何形状通过与所述前表面、所述基部表面和所述轴线相交的平面截断，从而形成后表面；
所述基部表面构造成用于将所述光学部件安装到所述透光面板上，并且用于将光耦合到所述透光面板中；
所述前表面构造成用于使光从所述前表面穿过所述基部表面并耦合到所述透光面板中，以使光通过全内反射在所述透光面板内传播。
2.根据权利要求1所述的光学部件，其中，所述几何形状是直圆锥体。
3.根据权利要求1所述的光学部件，其中，所述几何形状是圆柱体。
4.根据前述权利要求中任一项所述的光学部件，其中，所述基部表面包括角度过滤器，所述角度过滤器构造成过滤朝向所述基部表面入射的环境光。
5.根据权利要求4所述的光学部件，其中，所述角度过滤器构造成反射以相对于所述基部表面的法线成50°的角度入射的光。
6.根据前述权利要求中任一项所述的光学部件，其中，所述基部表面和所述后表面之间的角度β在20°至60°之间。
7.根据前述权利要求中任一项所述的光学部件，其中，所述后表面包括反射涂层。
8.根据权利要求7所述的光学部件，其中，所述后表面上的所述反射涂层包括铝、银、金或铜的真空镀膜层。
9.一种用于在光电设备和界定两个相对的边界表面的透光面板之间传输光的装置，所述装置包括：
多个部分重叠的根据前述权利要求中任一项所述的光学部件，这些光学部件形成布置成具有至少一个行的连续元件，在一个行中的相邻光学部件的峰之间具有预定的峰到峰间距，其中峰是在所述光学部件上距离所述光学部件的所述基部表面最远的点。
10.根据权利要求9所述的装置，其中，对于光学部件的至少一个行中的所有光学部件而言，所述峰到峰间距是相同的。
11.根据权利要求9所述的装置，其中，对于光学部件的至少一个行中的光学部件而言，所述峰到峰间距是变化的。
12.根据权利要求9-11中任一项所述的装置，包括光学部件的多个行，其中不同行的光学部件的峰之间的峰到峰间距大于同一行中的相邻光学部件的峰到峰间距。
13.根据权利要求12所述的装置，其中，每个行相对于相邻行移位所述行中的光学部件的峰到峰间距的一半。
14.根据权利要求12所述的装置，其中，随机噪声被用于确定部件和/或行之间的光学部件的间距。
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| US (1) | US10401546B2 (zh) |
| EP (1) | EP3265855A4 (zh) |
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| CN108369470B (zh) | 2015-12-09 | 2022-02-08 | 平蛙实验室股份公司 | 改进的触控笔识别 |
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| KR102495467B1 (ko) | 2016-12-07 | 2023-02-06 | 플라트프로그 라보라토리즈 에이비 | 개선된 터치 장치 |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP3265855A4 (en) | 2018-10-31 |
| WO2016140612A1 (en) | 2016-09-09 |
| US10401546B2 (en) | 2019-09-03 |
| EP3265855A1 (en) | 2018-01-10 |
| US20180031753A1 (en) | 2018-02-01 |
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