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31. 发明授权

US5923469A Eye contact rear screen imaging 失效
标题翻译：眼睛接触后屏幕成像
公开(公告)号：US5923469A
公开(公告)日：1999-07-13
申请号：US542309
申请日：1995-10-12
申请人： Jeffrey S. Machtig , Steve H. McNelley
发明人： Jeffrey S. Machtig , Steve H. McNelley
IPC分类号： G03B21/60 , G03B21/62 , G03B21/56
CPC分类号： G03B21/606 , G03B21/62
摘要： An improved rear projection screen for projecting a three-dimensional head or face is designed to accurately match the apparent movement of a imaged person eyes to movements of an observer, thereby maintaining eye contact between the imaged person and the observer as the observer moves relative to the image. This unique effect called "visualactivity" enables either a recorded or a live image of a person to engage observers with eye contact in a natural and interpersonal way despite movement of the observers relative to the image. This effect is achieved by projecting an image onto the convex side of a rear projection screen that roughly has the shape of a human head and face but is configured with proportions that are different from the natural proportions of the imaged person's face. When viewed from the concave side, this combination produces a realistic human face that appears to turn to accurately track an observer's movements.
摘要翻译：设计用于投影三维头部或面部的改进的背投屏幕被设计成精确地匹配成像的人眼的观察运动与观察者的运动，从而当观察者相对于观察者移动时保持被摄体人与观察者之间的眼睛接触图片。这种称为“视觉活动”的独特效果使得人的记录或实况图像能够以观察者相对于图像的移动以自然和人际关系的方式将观察者与眼睛接触。这种效果通过将图像投影到大致具有人头和脸部形状的背投屏幕的凸侧上，但是被配置为与成像人脸部的自然比例不同的比例。当从凹面观察时，这种组合产生一个现实的人脸，似乎能够准确地跟踪观察者的运动。

32. 发明授权

US5890787A Desktop large image and eye-contact projection display 失效
标题翻译：桌面大图像和眼睛接触投影显示
公开(公告)号：US5890787A
公开(公告)日：1999-04-06
申请号：US800206
申请日：1997-02-12
申请人： Steve H. McNelley , Jeffrey S. Machtig
发明人： Steve H. McNelley , Jeffrey S. Machtig
IPC分类号： G03B21/10 , G03B21/14 , H04N5/64 , H04N5/74 , H04N7/14
CPC分类号： G03B15/10 , G03B17/54 , G03B21/10 , G03B21/28 , H04N7/144 , H04N9/3141 , H04N5/642
摘要： An improved desktop projection display system which effectively utilizes desktop space by producing a large image that appears to be at the rear edge of the desk. The display is compact because it uses a transparent-reflective panel (i.e., beamsplitter) to reflect a screen image through the same space occupied by the projection beam. This is achieved by projecting through a transparent-reflective panel onto a front projection screen located on the desk surface. An image formed on the front projection screen is then reflected by the transparent-reflective panel creating the appearance, to the observer, that the reflected front projection screen is positioned toward the rear of the desk surface. This invention greatly improves desktop display ergonomics for large display viewing by providing a sufficient distance between the observer seated at a desk and the display image. A key embodiment of the invention positions a camera behind the transparent-reflective panel at the apparent position of the reflected screen image thus ensuring teleconferencing eye contact. The invention resolves the presence of visible reflections of the projector lens and related visible artifacts to allow artifact-free image capturing through the transparent-reflective panel. The teleconferencing eye-contact configuration, though ideal for desk top use, may also be incorporated into devices such as laptop computers, configured in kiosks or used in a manner similar to big screen projection televisions.
摘要翻译：一种改进的桌面投影显示系统，其通过产生似乎位于桌子后缘的大图像来有效地利用桌面空间。显示器是紧凑的，因为它使用透明反射面板（即分束器）来反射屏幕图像通过投影光束占据的相同空间。这通过将透明反射面板突出到位于桌面上的前投影屏幕上来实现。形成在前投影屏幕上的图像然后被透明反射板反射，产生观察者反射的前投影屏幕朝向桌面的后方定位的外观。本发明通过在坐在桌子上的观察者和显示图像之间提供足够的距离来极大地改善用于大型显示器观看的桌面显示人体工程学。本发明的关键实施例在反射屏幕图像的明显位置处将相机定位在透明反射板后面，从而确保电视会议的眼睛接触。本发明解决了投影仪透镜的可见反射的存在和相关的可见伪影，以允许通过透明反射面板进行无伪影的图像捕获。远程会议眼睛接触配置尽管是桌面使用的理想之用，也可以并入诸如膝上型计算机之类的设备中，配置在报亭中，或以类似于大屏幕投影电视机的方式使用。

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