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159 条记录 (耗时 0.019 秒)

    Camera-assisted presentation system
    1.
    发明申请
    Camera-assisted presentation system 失效

    公开(公告)号：US20050046811A1

    公开(公告)日：2005-03-03

    申请号：US10437618

    申请日：2003-05-13

    申请人： Isao Mori ,  Masaki Tanabe ,  Ryuichi Mizumoto

    发明人： Isao Mori ,  Masaki Tanabe ,  Ryuichi Mizumoto

    IPC分类号： H04N5/222 ,  H04N7/18 ,  G03B21/00

    CPC分类号： H04N7/183 ,  Y10S353/03

    摘要： In a camera-assisted presentation system, a microcomputer activates a motion detecting module to detect a motion of an object, based on a variation in luminance of image data representing a material photographed by a photographing module. In the case of detection of a motion of the object, the microcomputer controls an output control module to prohibit transfer of the image data to an image output module. Image data photographed immediately before detection of the motion is kept in an output image storage sub-module of the image output module. This arrangement effectively prevents any action of setting the material from being undesirably displayed on an external display unit, thus ensuring smooth presentation with improved display of images during the actions of setting the material in the camera-assisted presentation system.

    Projector having an inverted head optical arrangement
    2.
    发明授权
    Projector having an inverted head optical arrangement 失效

    公开(公告)号：US06582084B2

    公开(公告)日：2003-06-24

    申请号：US09811936

    申请日：2001-03-19

    申请人： Patricia H. DeLuca ,  Dennis F. Vanderwerf

    发明人： Patricia H. DeLuca ,  Dennis F. Vanderwerf

    IPC分类号： G03B2128

    CPC分类号： G03B21/132 ,  Y10S353/03

    摘要： An overhead projector including a Fresnel lens, a single element meniscus projection lens having a concave side and a convex side, and a folding mirror placed in an optical path between the Fresnel lens and the projection lens. The projection lens is oriented to have the concave side optically facing the Fresnel lens. The optical design of the overhead projector follows the following equation, FFres=(FLens(MLens+1)/MLens−SLD)/(MFres+1), where the Fresnel lens has a focal length FFres, and a magnification MFres, the projection lens has a focal length FLens and a magnification MLens, and SLD is the distance from the stop position and the projection lens.

    Liquid crystal display with projecting function
    5.
    发明授权
    Liquid crystal display with projecting function 失效
    具有突出功能的液晶显示器

    公开(公告)号：US5779336A

    公开(公告)日：1998-07-14

    申请号：US798554

    申请日：1997-02-11

    申请人： Michael Zhao

    发明人： Michael Zhao

    IPC分类号： G03B21/132 ,  G03B21/30 ,  H04N5/74 ,  G03B21/14

    CPC分类号： H04N9/3141 ,  G03B21/132 ,  G03B21/30 ,  H04N5/7408 ,  Y10S353/03

    摘要： A liquid crystal display with projecting function including an open-top box body with enclosed sides, a projection light source, a condensing lens, a liquid crystal display plate, a relay plate, a reflective lens and a back light plate. The projection light source is disposed at the bottom side of the box body. The condensing lens is disposed in the box body above the projection light source. The liquid crystal display plate has one side connected to a display light source and the other side connected to the box body. The reflective lens is secured below the relay plate. The back light plate is secured above the relay plate. The relay plate, reflective lens and the back light plate may be closed and accommodated in the box body between the liquid crystal display plate and the condensing lens for displaying purposes. They may also be obliquely disposed on the upper side of the liquid crystal display plate for projection purposes.

    摘要翻译： 一种具有突出功能的液晶显示器，包括具有封闭侧面的敞开式箱体，投影光源，聚光透镜，液晶显示板，中继板，反射透镜和背光板。 投影光源设置在箱体的底侧。 聚光透镜设置在投影光源上方的盒体中。 液晶显示板的一侧连接到显示光源，另一侧连接到盒体。 反光镜固定在继电器板的下方。 背光板固定在继电器板的上方。 中继板，反射透镜和背光板可以封闭并容纳在液晶显示板和聚光透镜之间的盒体中，用于显示目的。 它们也可以倾斜地布置在液晶显示板的上侧用于投影目的。

    Overhead projector for flat panel display capability
    6.
    发明授权
    Overhead projector for flat panel display capability 失效
    平板显示器的投影机

    公开(公告)号：US5593221A

    公开(公告)日：1997-01-14

    申请号：US495081

    申请日：1995-06-27

    申请人： Daniel E. Evanicky ,  Leroy B. Keely ,  Steven Siefert

    发明人： Daniel E. Evanicky ,  Leroy B. Keely ,  Steven Siefert

    IPC分类号： G03B21/132 ,  G03B21/16

    CPC分类号： G03B21/132 ,  Y10S353/03

    摘要： An overhead projector for use with a flat panel display assembly. The specialized overhead projector provides cooling for the LCD flat panel when used in an overhead projection configuration. The projector contains a rail on which the flat panel display is positioned for alignment and to provide air passage there through for cooling. A clamping mechanism is also described for securing the flat panel display to the projector. The flat panel display is a back-lit flat panel display subsystem for direct viewing as a monitor and also has overhead projection capability. The display subsystem contains a removable door assembly which provides for back-lighting for direct viewing. When the door assembly is removed, the active matrix LCD is semi-transparent and can be placed over the imaging screen of the overhead projector such that the LCD color image can be thus projected. The lamps that provide the back-lighting remain within the display subsystem when the door is removed and a unique optical coupling is provided between the lamps and a light pipe within the door. The display subsystem contains a sensor detecting door presence and simultaneously shuts off the lamps and reverses the display image upon door removal for overhead projection capability.

    摘要翻译： 一种用于平板显示器组件的高架投影仪。 专用的高架投影仪在架空投影配置中使用时，为LCD平板提供冷却。 该投影仪包含一个导轨，平板显示器定位在该导轨上，用于对准，并提供空气通道以供冷却。 还描述了用于将平板显示器固定到投影仪的夹紧机构。 平板显示器是背光平板显示子系统，用于作为显示器直接观看，并且还具有架空投影能力。 显示子系统包含可拆卸的门组件，其提供用于直接观看的背光照明。 当门组件被移除时，有源矩阵LCD是半透明的，并且可以放置在高架投影仪的成像屏幕上，使得可以如此投影LCD彩色图像。 当门被移除时，提供背光的灯保持在显示器子系统内，并且在灯和门内的光管之间提供独特的光耦合。 显示子系统包含传感器检测门的存在，并同时关闭灯并在门去除时反转显示图像以进行架空投射能力。

    Projectable timer
    7.
    发明授权
    Projectable timer 失效
    可投影定时器

    公开(公告)号：US5590944A

    公开(公告)日：1997-01-07

    申请号：US40538

    申请日：1993-03-30

    申请人： William T. Stokes

    发明人： William T. Stokes

    IPC分类号： G03B21/132 ,  G06F15/02 ,  G09B5/00 ,  G09B19/00

    CPC分类号： G03B21/132 ,  G06F15/0216 ,  G09B5/00 ,  Y10S353/03

    摘要： An electronic timing device has a transparent liquid crystal display for use on an overhead projector, for projecting a large image of the LCD numerals on a screen or wall of a classroom, for timing of tests or other activities. The timer has a plastic casing, various function keys, a solar cell and/or battery, other internal electronics and a transparent liquid crystal display. Foldable legs of the timer, when open, maintain the timer a set distance above the light stage of the projector so as to prevent the LCD from overheating. One of the foldable legs, in the closed position, serves as protection and as a reflective backing for the LCD, so that the timer can function as a desk top LCD clock in the closed position. The timing device can function as a clock or timer in various modes.

    摘要翻译： 电子定时装置具有用于高架投影仪的透明液晶显示器，用于将大量图像的LCD数字投影在教室的屏幕或墙壁上，用于测试或其他活动。 定时器具有塑料外壳，各种功能键，太阳能电池和/或电池，其他内部电子元件和透明液晶显示器。 定时器的可折叠腿，当打开时，将定时器保持在投影机的光级上方的设定距离，以防止LCD过热。 在关闭位置，可折叠腿之一用作LCD的保护和反射背衬，因此定时器可用作处于关闭位置的桌面LCD时钟。 定时设备可以作为各种模式的时钟或定时器。

    Transparency protector
    8.
    发明授权
    Transparency protector 失效
    透明保护膜

    公开(公告)号：US5486883A

    公开(公告)日：1996-01-23

    申请号：US25619

    申请日：1993-03-03

    申请人： Thomas A. Candido

    发明人： Thomas A. Candido

    IPC分类号： B42F7/02 ,  G03B21/132 ,  G03B21/64

    CPC分类号： G03B21/132 ,  B42F7/025 ,  Y10S353/03

    摘要： A protector adapted to accommodate a transparency to maintain it in a clean, dust-free and dry condition so that it may be used with an overhead optical projector to cast the image carried by the transparency onto a viewing screen. The protector is constituted by an open-ended rectangular sleeve whose dimensions are appropriate to those of the transparency, the sleeve including a front panel formed of transparent, acetate film that is breathable to permit a transparency inserted in the sleeve in a wet state to dry out. Also included is a rear panel formed of a transparent, synthetic plastic film of high strength having the same length as the front panel and joined thereto at one side edge to form a folder to receive the transparency so that it is then sandwiched between the panels. The width of the rear panel is greater than that of the front panel to form a flap that is folded over to define at the other side edge of the sleeve a margin that can be provided with a set of punch holes whereby the transparency-loaded protector can be kept when not in use in a ring binder or file.

    摘要翻译： 保护器适于容纳透明度以将其保持在干净，无尘和干燥的状态，使得其可与顶置光学投影仪一起使用以将由透明体承载的图像投射到观察屏幕上。 保护器由开口矩形套筒构成，其尺寸适合透明度的尺寸，套筒包括由透明的乙酸酯膜形成的前面板，透明的乙酸酯膜是透湿的，以允许在湿状态下插入套筒中的透明物干燥 出来 还包括由具有与前面板长度相同的高强度的透明合成塑料膜形成的后面板，并在其一侧边缘处与其连接，以形成容纳透明体的夹子，从而将其夹在面板之间。 后面板的宽度大于前面板的宽度，以形成折叠，以在套筒的另一侧边缘上限定可设置一组冲孔的边缘，由此透明度负载保护器 可以在不使用环形活页夹或文件时保留。

    Condensers for overhead projectors
    9.
    发明授权
    Condensers for overhead projectors 失效
    架空投影机的冷凝器

    公开(公告)号：US5475535A

    公开(公告)日：1995-12-12

    申请号：US348376

    申请日：1994-12-01

    申请人： Stephen K. Eckhardt

    发明人： Stephen K. Eckhardt

    IPC分类号： G03B21/132 ,  G02B1/00 ,  G02B3/02 ,  G02B3/04 ,  G02B19/00 ,  G02B13/18

    CPC分类号： G02B3/04 ,  G02B19/0028 ,  G02B19/0047 ,  Y10S353/03

    摘要： A family of condenser lenses for an overhead projector (OHP) are designed to balance overall brightness in the projected image versus uniformity of illumination. The lenses are plano-convex and aspheric, and their conic constant is a function of the radius of curvature. The radius of curvature is further selected from a range which depends upon the size of the stage of the OHP. Preferred values of other parameters of the lens and OHP optical system are selected to complement the lens design. The lens is constructed of a heat-resistant material, such as borosilicate, to withstand the high temperatures generated by the incandescent lamp within the OHP base. Condenser lenses which are members of the described family provide performance, in terms of total luminous flux and uniformity of that flux, which is superior to the performance of previous designs.

    摘要翻译： 用于高架投影仪（OHP）的聚光镜系列设计用于平衡投影图像中的总体亮度与照明均匀性。 透镜是平凸的和非球面的，它们的圆锥常数是曲率半径的函数。 曲率半径进一步从取决于OHP的阶段的尺寸的范围中选择。 选择透镜和OHP光学系统的其他参数的优选值以补充透镜设计。 透镜由诸如硼硅酸盐之类的耐热材料构成，以承受由OHP基体内的白炽灯产生的高温。 作为所述系列的成员的冷凝器透镜在总光通量和通量的均匀性方面提供了优于先前设计的性能的性能。

    Condensers for overhead projectors
    10.
    发明授权
    Condensers for overhead projectors 失效

    公开(公告)号：US5400094A

    公开(公告)日：1995-03-21

    申请号：US40483

    申请日：1993-03-31

    申请人： Stephen K. Eckhardt

    发明人： Stephen K. Eckhardt

    IPC分类号： G03B21/132 ,  G02B1/00 ,  G02B3/02 ,  G02B3/04 ,  G02B19/00

    CPC分类号： G02B3/04 ,  G02B19/0028 ,  G02B19/0047 ,  Y10S353/03

    摘要： A family of condenser lenses for an overhead projector (OHP) are designed to balance overall brightness in the projected image versus uniformity of illumination. The lenses are plano-convex and aspheric, and their conic constant is a function of the radius of curvature. The radius of curvature is further selected from a range which depends upon the size of the stage of the OHP. Preferred values of other parameters of the lens and OHP optical system are selected to complement the lens design. The lens is constructed of a heat-resistant material, such as borosilicate, to withstand the high temperatures generated by the incandescent lamp within the OHP base. Condenser lenses which are members of the described family provide performance, in terms of total luminous flux and uniformity of that flux, which is superior to the performance of previous designs.