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1. 发明授权

US08274495B2 System and method for contactless touch screen 有权
标题翻译：非接触触摸屏的系统和方法
公开(公告)号：US08274495B2
公开(公告)日：2012-09-25
申请号：US12787340
申请日：2010-05-25
申请人： Yee Chun Lee
发明人： Yee Chun Lee
IPC分类号： G06F3/042
CPC分类号： G06F3/043 , G06F3/042
摘要： A touch screen that employs a lens-less linear IR sensor array and an IR light source from a single location at the periphery of the screen to illuminate one or more objects proximate to the screen surface and detect light reflected from such objects. The sensor array is paired with a proximal grid-like barrier/reflector to create Moiré patterns on the sensor array. Digital signal processing converts such patterns into discrete Fourier transforms. The peaks of the lower order discrete Fourier spectrum as well as the complex phases of the lower order peaks can be used to determine the locations of the objects proximal to the screen accurately. A small number of pressure or surface acoustic sensors at the periphery of the screen are utilized to improve positioning reliability by providing redundant positioning information and registering physical contacts with the screen.
摘要翻译：一种触摸屏，其使用无镜头线性IR传感器阵列和来自屏幕外围的单个位置的IR光源来照亮靠近屏幕表面的一个或多个物体并且检测从这些物体反射的光。传感器阵列与近端网格状屏障/反射器配对，以在传感器阵列上创建莫尔图案。数字信号处理将这些模式转换为离散傅里叶变换。低阶离散傅立叶光谱的峰值以及较低阶峰值的复相可以用于准确地确定近似于屏幕的物体的位置。通过提供冗余的定位信息和与屏幕对准物理接触，利用屏幕外围的少量压力或表面声传感器来提高定位可靠性。

2. 发明申请

US20110291989A1 System and Method for Contactless Touch Screen 有权
标题翻译：非接触触摸屏的系统和方法
公开(公告)号：US20110291989A1
公开(公告)日：2011-12-01
申请号：US12787340
申请日：2010-05-25
申请人： Yee Chun Lee
发明人： Yee Chun Lee
IPC分类号： G06F3/042
CPC分类号： G06F3/043 , G06F3/042
摘要： A touch screen that employs a lens-less linear IR sensor array and an IR light source from a single location at the periphery of the screen to illuminate one or more objects proximate to the screen surface and detect light reflected from such objects. The sensor array is paired with a proximal grid-like barrier/reflector to create Moiré patterns on the sensor array. Digital signal processing converts such patterns into discrete Fourier transforms. The peaks of the lower order discrete Fourier spectrum as well as the complex phases of the lower order peaks can be used to determine the locations of the objects proximal to the screen accurately. A small number of pressure or surface acoustic sensors at the periphery of the screen are utilized to improve positioning reliability by providing redundant positioning information and registering physical contacts with the screen.
摘要翻译：一种触摸屏，其使用无镜头线性IR传感器阵列和来自屏幕外围的单个位置的IR光源来照亮靠近屏幕表面的一个或多个物体并且检测从这些物体反射的光。传感器阵列与近端网格状屏障/反射器配对，以在传感器阵列上创建莫尔图案。数字信号处理将这些模式转换为离散傅里叶变换。低阶离散傅立叶光谱的峰值以及较低阶峰值的复相可以用于准确地确定近似于屏幕的物体的位置。通过提供冗余的定位信息和与屏幕对准物理接触，利用屏幕外围的少量压力或表面声传感器来提高定位可靠性。

3. 发明授权

US07233722B2 System and method for fiber optics based direct view giant screen flat panel display 有权
标题翻译：直接观看巨型屏幕平板显示器的光学系统和方法
公开(公告)号：US07233722B2
公开(公告)日：2007-06-19
申请号：US11203865
申请日：2005-08-15
申请人： Yee Chun Lee
发明人： Yee Chun Lee
IPC分类号： G02B6/26 , G02B6/36
CPC分类号： G09G3/001 , G02B6/3538
摘要： An apparatus and method for displaying large format images, graphics, and videos. The apparatus comprise a layer of column oriented optical fibers, each fiber is illuminated at one end by at least one laser diode, and a second layer which sits in front of the first layer and is parallel to the first layer, whose projected area substantially overlap that of the first layer. The second layer comprises a plurality of optical fibers arranged in rows. In between the first and second layer sits a third layer of optical switching elements. Alternatively, the second layer can be a light diffusing layer. Laser lights emitted from the laser diodes travel in parallel along respective column fiber until they are redirected by optical switching elements which couple the laser lights within the column fibers to the row fibers or to the difflusing layer directly whereby they are scattered by the diffusing elements to reach the viewing audience. The small size of the fibers results in very small fill factor, allowing light absorbing matrix and backing layer to absorb ambient light effectively. The contrast ratio under ambient light condition is further enhanced by the use of multilayer dielectric optical filter to preferentially absorb ambient light.
摘要翻译：用于显示大幅面图像，图形和视频的装置和方法。该装置包括一列柱取向的光纤，每个光纤在一端由至少一个激光二极管照射，第二层位于第一层的前面并平行于第一层，其第二层的投影面积基本上重叠第一层的。第二层包括排成行的多根光纤。在第一和第二层之间设置第三层光学开关元件。或者，第二层可以是光漫射层。从激光二极管发射的激光沿相应的列光纤平行行进，直到它们被光开关元件重定向，这些光开关元件将列光纤内的激光直接耦合到行光纤或直接到散射层，由此被漫射元件散射到达观众。纤维的小尺寸导致非常小的填充因子，允许光吸收基质和背衬层有效吸收环境光。通过使用多层电介质光学滤光器来优先吸收环境光，环境光条件下的对比度进一步提高。

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