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    • 5. 发明授权
    • Device for positioning the cathode ray tubes in a projection television
system
    • 用于将阴极射线管定位在投影电视系统中的装置
    • US5298984A
    • 1994-03-29
    • US991340
    • 1992-12-16
    • Kiyoshi Numata
    • Kiyoshi Numata
    • G03B21/00H01J31/10H04N5/74H04N9/31H04N5/645H04N5/655
    • H04N9/3141H04N5/7408H04N9/31
    • A cathode ray tube device employed in a projection apparatus for projecting an image on a screen. The cathode ray tube device includes a supporting frame mounted on a rim of a front panel section of the cathode ray tube, a lens plate in the form of a frame having a center aperture, and having a projection lens system attached to it, and a positioning supporting member detachably mounted on a mounting base plate of the projection apparatus and adapted for positioning the supporting frame and the lens plate with respect to the mounting base plate for detachably supporting the supporting frame and the lens plate by the mounting base plate. The positioning supporting member has a lens plate supporting surface for supporting the lens plate at a tilt angle corresponding to a convergence angle with respect to the mounting base plate and a supporting frame supporting surface for positioning and supporting the supporting frame at a tilt angle corresponding to an elevation with respect to the lens plate and at a distance corresponding to a back focal length at back of the lens plate for accurately setting the convergence angle, elevation and the back focal length.
    • 一种在用于将图像投影在屏幕上的投影装置中使用的阴极射线管装置。 阴极射线管装置包括安装在阴极射线管的前面板部分的边缘上的支撑框架,具有中心孔的框架形式的透镜板,并且具有安装在其上的投影透镜系统 定位支撑构件可拆卸地安装在投影装置的安装基板上,并且适于相对于安装基板定位支撑框架和透镜板,用于通过安装基板可拆卸地支撑支撑框架和透镜板。 定位支撑构件具有透镜板支撑表面,用于以相对于安装基板的会聚角度的倾斜角度支撑透镜板;以及支撑框架支撑表面,用于以对应于 相对于透镜板的高度,并且在与透镜板背面的后焦距相对应的距离处,用于精确地设定会聚角,仰角和后焦距。