Surface illuminating device and an image display apparatus provided with
a surface illuminating device
    18.
    发明授权
    Surface illuminating device and an image display apparatus provided with a surface illuminating device 失效
    表面照明装置和具有表面照明装置的图像显示装置

    公开(公告)号:US6139161A

    公开(公告)日:2000-10-31

    申请号:US60351

    申请日:1998-04-15

    摘要: A surface illuminating device is provided with a light source, a light introducing plate lying in a plane passing the light source, a first light diffusing plate arranged on a top surface of the light introducing plate, and a second light diffusing plate arranged on a bottom surface of the light introducing plate. The light introducing plate includes a first section arranged with the first light diffusing plate, and a second section arranged with the second light diffusing plate. The first and second sections each are formed with serrations in a surface opposite to a surface arranged with their respective light diffusing plate.

    摘要翻译: 表面照明装置设置有光源,位于通过光源的平面中的导光板,布置在导光板的顶表面上的第一光漫射板和布置在底部的第二光漫射板 光导入板的表面。 导光板包括配置有第一光漫射板的第一部分和与第二光散射板配置的第二部分。 第一和第二部分各自在与其各自的光散射板布置的表面相对的表面中形成有锯齿。

    Taking optical system for video shooting
    19.
    发明授权
    Taking optical system for video shooting 失效
    采用光学系统进行视频拍摄

    公开(公告)号:US5963377A

    公开(公告)日:1999-10-05

    申请号:US165275

    申请日:1998-10-01

    CPC分类号: G02B15/177

    摘要: A zoom lens system is provided with, from the object side, a first lens unit having a negative optical power, a second lens unit having a positive optical power, a third lens unit having a negative optical power, and a condenser lens unit having a positive optical power. In this zoom lens system, zooming is performed by varying the distances between the first, the second, the third lens unit, and the condenser lens unit. Additionally, this zoom lens system fulfills the condition below:-1.5

    摘要翻译: 变焦透镜系统从物体侧设置具有负光焦度的第一透镜单元,具有正光焦度的第二透镜单元,具有负光焦度的第三透镜单元和具有负光焦度的聚光透镜单元, 正光功率。 在该变焦透镜系统中,通过改变第一透镜单元,第二透镜单元和聚光透镜单元之间的距离来进行变焦。 另外,该变焦透镜系统满足以下条件:-1.5

    Lens system
    20.
    发明授权
    Lens system 失效
    镜头系统

    公开(公告)号:US5959771A

    公开(公告)日:1999-09-28

    申请号:US690916

    申请日:1996-08-01

    摘要: A relay lens system which may be used with, e.g., a video camera or still video camera so that these video cameras can use, as the image forming lens, various preexisting interchangeable image forming lenses originally designed for single lens reflex cameras. The image forming lenses which form a first image can have various exit pupils. The entry pupil of the relay lens system can be changed in accordance with each particular exit pupil by selecting one from a plurality of apertures or by a movable aperture. Consequently, a second image can be formed that reproduces the first image while maintaining good quality.

    摘要翻译: 可以与例如摄像机或静态摄像机一起使用以使得这些摄像机可以使用的中继透镜系统作为成像透镜,原先设计用于单镜头反光相机的各种预先存在的可互换成像透镜。 形成第一图像的图像形成透镜可以具有各种出射光瞳。 中继透镜系统的进入光瞳可以通过从多个孔径中选择一个或通过可移动孔径来根据每个特定出射光瞳来改变。 因此,可以形成再现第一图像同时保持良好质量的第二图像。