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1. 发明授权

US3858972A Slide projector 失效
标题翻译：幻灯机
公开(公告)号：US3858972A
公开(公告)日：1975-01-07
申请号：US30720672
申请日：1972-11-16
申请人： CABIN KOGYO KABUSHIKI KAISHA
发明人： HIROSAWA TOMIO , OTSUKA SUSUMU
IPC分类号： G03B21/00 , G03B23/00 , G03B23/02 , G03B23/04
CPC分类号： G03B23/02
摘要： A slide projector having a pair of fixed projecting optical systems, a single magazine and a pair of slide carriers for bringing slides in the said magazine into and taking them out of a pair of projecting light paths and the said slide projector being arranged so that a plurality of slides housed in the said magazine can be projected in proper order smoothly and reliably. The said slide projector is provided with light adjusting devices for maintaining the brightness of the image to be projected on the screen at an approximately constant amount and also provided with a control device for automatically putting out the projecting lamps and automatically stopping the operation when a slide is not held in the slide carrier which is brought into the projecting light path during projecting operation.
摘要翻译：一种具有一对固定投影光学系统的滑动投影仪，单个储存器和一对滑动架，用于将所述盒中的滑块带入并将其从一对突出的光路中取出，并且所述滑动投影仪被布置成使得容纳在所述盒中的多个幻灯片可以顺利且可靠地以适当的顺序投影。所述幻灯机设置有用于将图像的亮度维持在大致恒定量的屏幕上的调光装置，并且还设置有用于自动放出投影灯的控制装置，并且当幻灯片自动停止时，自动停止操作没有保持在投影操作期间被带入投影光路的滑动架中。

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