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1. 发明授权

US4938587A Foldable optical apparatus 失效
标题翻译：可折叠光学装置
公开(公告)号：US4938587A
公开(公告)日：1990-07-03
申请号：US352542
申请日：1989-05-16
申请人： Kenta Namioka , Tokuji Sato , Minoru Shiiba , Fumio Kikutzugi , Hirofumi Kino
发明人： Kenta Namioka , Tokuji Sato , Minoru Shiiba , Fumio Kikutzugi , Hirofumi Kino
IPC分类号： G03B21/132 , G03B21/30
CPC分类号： G03B21/132 , G03B21/30 , Y10S353/04
摘要： An optical apparatus having a base table on which an original is placed and an image forming unit with an optical system which projects an image of the original onto a remote screen for showing the same to a number of viewers. A foldable structure is provided, having a support structure mounted on a base table for movement between a lowered position covering the base table and a raised position wherein the image forming unit is located above the base table so as to form and project the image of the original onto the remote screen. A linkage interconnects the image forming unit and the support structure for causing a movement of the image forming unit relative to the support structure upon movement of the support structure between the folded and unfolded positions, thereby placing the image forming unit above the base table when the supporting means is in the raised position and flush with the support means so as to cover the base table when the support means is in the lowered position.
摘要翻译：一种具有放置原稿的基台的光学装置和具有将原稿的图像投射到远程屏幕上以将其显示给多个观看者的光学系统的图像形成单元。提供了一种可折叠结构，其具有安装在基台上的支撑结构，用于在覆盖基台的下降位置和升高位置之间移动，其中图像形成单元位于基座上方，以便形成和投影图像原来到远程屏幕上。连杆将图像形成单元和支撑结构相互连接，用于当支撑结构在折叠位置和展开位置之间移动时使图像形成单元相对于支撑结构移动，从而将图像形成单元放置在基座上方支撑装置处于升起位置并与支撑装置齐平，以便当支撑装置处于降低位置时覆盖基座。

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