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1. 发明公开

EP2506129A2 Electronic pen and projector system using the same 审中-公开
标题翻译： Elektronischer Stift und Projektionssystem damit
公开(公告)号：EP2506129A2
公开(公告)日：2012-10-03
申请号：EP12161181.8
申请日：2012-03-26
申请人： Hitachi Consumer Electronics Co., Ltd.
发明人： Onodera, Shinji , Matsuzawa, Toshihiko , HOTTA, Nobutaka
IPC分类号： G06F3/041 , G06F3/033 , G06F3/043 , G06F3/042
CPC分类号： G06F3/042 , G06F3/03545 , G06F3/041 , G06F3/0433 , G06F2203/04106
摘要： There is provided an electronic pen that reduces reflected waves of ultrasonic waves from a screen, with a simple structure and there is realized a projector system that improves the position detection precision of the electronic pen. The electronic pen comprises a longitudinal axis-shaped housing body having a pen tip at a tip end portion thereof, an ultrasonic wave transmitting portion provided inside the housing body relative to the pen tip for generating ultrasonic waves, an infrared ray transmitting portion arranged adjacent to the ultrasonic wave transmitting portion for generating an infrared ray, and an ultrasonic wave guide for reflecting components, toward a pen tip side, among the ultrasonic waves generated from the ultrasonic wave transmitting portion.
摘要翻译：提供了一种电子笔，其以简单的结构减少了来自屏幕的超声波的反射波，并且实现了提高电子笔的位置检测精度的投影仪系统。电子笔包括在其前端部具有笔尖的纵轴形壳体，相对于用于产生超声波的笔尖设置在壳体内部的超声波传递部分，与...相邻的红外线传输部分超声波发送部分，用于产生红外线的超声波发射部分，以及用于从超声波发射部分产生的超声波中朝向笔尖侧反射成分的超声波引导部。

2. 发明授权

EP2392967B1 Video-projection apparatus with rear projection screen 有权
标题翻译：背投屏幕视频投影设备
公开(公告)号：EP2392967B1
公开(公告)日：2013-06-12
申请号：EP11003253.9
申请日：2011-04-18
申请人： Hitachi Consumer Electronics Co. Ltd.
发明人： Hirata, Koji , Ikeda, Hidehiro , Matsuzawa, Toshihiko , Sato, Tadashi
IPC分类号： G03B21/62 , B29D11/00 , G03B21/10 , G03B21/28 , G02B13/18 , G02B13/16 , G02B5/04
CPC分类号： G03B21/10 , B29D11/00269 , G02B5/045 , G02B13/16 , G02B13/18 , G03B21/28 , G03B21/62

3. 发明公开

EP2392967A1 Video-projection apparatus with rear projection screen 有权
标题翻译： Video-Projektionsvorrichtung mitRückprojektionsschirm
公开(公告)号：EP2392967A1
公开(公告)日：2011-12-07
申请号：EP11003253.9
申请日：2011-04-18
申请人： Hitachi Consumer Electronics Co. Ltd.
发明人： Hirata, Koji , Ikeda, Hidehiro , Matsuzawa, Toshihiko , Sato, Tadashi
IPC分类号： G03B21/10 , G03B21/28 , G03B21/62 , B29D11/00 , G02B13/18 , G02B27/18
CPC分类号： G03B21/10 , B29D11/00269 , G02B5/045 , G02B13/16 , G02B13/18 , G03B21/28 , G03B21/62
摘要： A rear-type projection board apparatus (rear-surface projection-type video display apparatus), of new structure, having no necessity of a housing, being superior in portability, cheaply producible, comprises a transmission-type screen 130, being disposed within an interior space, under a condition of exposing both surfaces thereof in the space, and for transmitting a visual light projected onto a rear surface therethrough, so as to display it on a video display surface on a front surface, and a video projection apparatus (projector) 102, being disposed at a predetermined position on a rear surface side of the transmission-type screen, and for projecting the visual light from a rear surface of the transmission-type screen, enlargedly, wherein the transmission-type screen has a Fresnel lens 166 (136) having Fresnel lens surfaces, covering over an entire light receiving surface for receiving the visual light, which is enlargedly projected from the video projection apparatus, whereby guiding the visual light received from the video projection apparatus into a direction perpendicular to the video display surface, while guiding external lights within the interior space downwards.
摘要翻译：具有不需要外壳的新型结构的后置式投影板装置（后表面投射式视频显示装置）具有便携性优异，成本低廉的特点，包括：传输型屏幕130，其设置在内部空间，在其空间中露出其两个表面的条件下，以及用于透射投影到后表面上的视觉光，以将其显示在前表面上的视频显示表面上，以及视频投影设备（投影仪）102设置在透射型屏幕的背面侧的预定位置处，并且用于从透射型屏幕的后表面放大地投射视觉光，其中透射型屏幕具有菲涅尔透镜 166（136）具有菲涅尔透镜表面，覆盖整个光接收表面以接收从视频投影设备被放大的视觉光，由此引导将从视频投影设备接收的视觉光线垂直于视频显示表面的方向，同时向内引导内部空间内的外部光。

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