Image display screen having wide vertical and horizontal viewing angles and projection television including the same
    21.
    发明申请
    Image display screen having wide vertical and horizontal viewing angles and projection television including the same 失效
    具有宽垂直和水平视角的图像显示屏幕和包括其的投影电视机

    公开(公告)号:US20050018286A1

    公开(公告)日:2005-01-27

    申请号:US10874700

    申请日:2004-06-24

    摘要: Provided is an image display screen having wide horizontal and vertical viewing angles and a projection television including the same. The image display screen includes a Fresnel screen, a first lenticular screen that widens a horizontal viewing angle and a second lenticular screen including a first portion that widens a vertical viewing angle and a second portion that prevents degradation of contrast due to external light, and a protective screen. The second lenticular screen and the protective screen can be replaced by an integrated screen or a composite screen having the characteristics of both. In addition, a pattern may be formed on the rear surface of the Fresnel screen to perform the same function as the first portion.

    摘要翻译: 提供了具有宽的水平和垂直视角的图像显示屏幕和包括其的投影电视机。 图像显示屏幕包括菲涅耳屏幕,第一透镜屏幕,其加宽水平视角,第二透镜屏幕包括加宽垂直视角的第一部分和防止由外部光引起的对比度降低的第二部分,以及 屏障。 第二透镜屏和保护屏可以由具有两者特征的集成屏或复合屏替代。 此外,可以在菲涅尔屏幕的后表面上形成图案以执行与第一部分相同的功能。