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    Equatorial sundial apparatus utilizing one or more concave cylindrical focusing mirrors
    7.
    发明授权
    Equatorial sundial apparatus utilizing one or more concave cylindrical focusing mirrors 失效
    使用一个或多个凹形圆柱形聚焦镜的赤道日ial设备

    公开(公告)号：US06301793B1

    公开(公告)日：2001-10-16

    申请号：US09417561

    申请日：1999-10-14

    申请人： William Gottesman ,  Karsten H. Weiss ,  Jerrold C. Manock

    发明人： William Gottesman ,  Karsten H. Weiss ,  Jerrold C. Manock

    IPC分类号： C04B4904

    CPC分类号： G04B49/02 ,  G04B49/04

    摘要： An equatorial sundial apparatus with an adjustable base assembly utilizing one or more concave cylindrical focusing mirrors. One of the benefits that is derived from this apparatus is the use of one or more concave cylindrical mirrors to project a focused beam of light onto a calibrated surface from which the time can be read. This sundial has the additional benefit of not suffering from blurring of the time indicator in a shadow or non-focused beam of light typical of other sundials. This sundial's focused light forms a sharply demarcated indicator from which time can be read to the minute. A further benefit of this apparatus is the ability to incorporate multiple concave cylindrical focusing mirrors to reduce the size of the visual field or screen where the time is read and to incorporate various shapes and designs for ornamental purposes without significant compromise of the sundials accuracy for telling time. An additional benefit of this apparatus is the ability to quickly, accurately and easily adjust the apparatus to the proper tilt upon setup according to the latitude where it will be located by means of an adjustable base assembly.

    摘要翻译： 一种赤道日ial装置，其具有可调节的基座组件，该基座组件采用一个或多个凹形圆柱形聚焦镜。 从该装置得到的好处之一是使用一个或多个凹形圆柱形镜将聚焦光束投射到可从中读取时间的校准表面上。 这个日has具有额外的好处，就是不会在其他日light典型的阴影或非聚焦光束下模糊时间指示器。 这个日ial的聚焦光形成了一个明确的划分指标，从这个时间可以看出这一点。 该设备的另一个优点是能够并入多个凹入的圆柱形聚焦镜，以减少读取时间的视野或屏幕的尺寸，并且为了装饰目的并入各种形状和设计，而不会对日for的准确性进行显着的损害 时间。 该设备的另外的好处是能够根据通过可调节的基座组件所在的纬度设置快速，准确和容易地将设备调整到适当的倾斜。