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1. 发明授权

US4370058A Digital focimeter and method 失效
标题翻译：数字焦度计和方法
公开(公告)号：US4370058A
公开(公告)日：1983-01-25
申请号：US173377
申请日：1980-07-29
申请人： Otto Trotscher , Horst Stacklies , Meinrad Machler
发明人： Otto Trotscher , Horst Stacklies , Meinrad Machler
IPC分类号： G01M11/02 , G02C13/00 , G01B9/00
CPC分类号： G01M11/0228
摘要： The invention contemplates a method and apparatus for automatically performing digital measurement of vertex dioptric powers in the principal planes of toric spectacle lenses. A spectacle lens is transilluminated by a parallel-ray bundle of monochromatic light which, after passage through the spectacle lens, is limited by an annular stop in the immediate vicinity of the vertex of the spectacle lens. A beamsplitter divides the light which passes through the spectacle lens into two individual light beams. As a result, an elliptical figure is projected to two planes, in each of which is located at least one self-scanning diode line. Diode-line scanning develops intercepts of the projected elliptical figure, and from the positional locations of these intercepts (in relation to the local intercept of the optical axis) a computer performs a selected one of a plurality of evaluation procedures (a) to develop projected-figure reorientation or displacement as necessary to permit it then (b) to perform a desired measurement evaluation. Provision is made for automatic detection of whether a given spectacle lens is or is not within the currently set range of measurement capability and, if determined to be outside such range, the fact of such detection is operative to change optical elements of the apparatus for optimum measurement-range accommodation of the particular spectacle lens.
摘要翻译：本发明考虑了一种用于在复曲面眼镜的主平面中自动执行顶点屈光度数字测量的方法和装置。眼镜镜片通过平行射线的单色光束照射，在穿过眼镜镜片之后，眼镜镜片被靠近眼镜镜片顶点的环形止挡限制。分束器将通过眼镜镜片的光分成两个单独的光束。结果，将椭圆形图形投影到两个平面，每个平面位于至少一个自扫描二极管线。二维线扫描产生投影椭圆图的截距，并且从这些截距的位置位置（相对于光轴的局部截距），计算机执行多个评估过程（a）中选择的一个来开发投影的 - 根据需要配置重新定位或位移，以便（b）执行所需的测量评估。规定了自动检测给定的眼镜镜片是否在当前设定的测量能力范围内，并且如果被确定为在该范围之外，则这种检测的事实可用于改变装置的光学元件以达到最佳特定眼镜片的测量范围调节。

2. 发明授权

US4266862A Refractometer for the automatic objective determination of the refractive condition of an eye 失效
$Refractometer for the automatic objective determination of the refractive condition of an eye$
标题翻译：用于自动客观测定眼睛屈光状况的折射仪
公开(公告)号：US4266862A
公开(公告)日：1981-05-12
申请号：US853542
申请日：1977-11-21
申请人： Otto Trotscher , Erwin Wiedmann
发明人： Otto Trotscher , Erwin Wiedmann
IPC分类号： A61B3/10 , A61B3/103 , A61B3/15
CPC分类号： A61B3/152 , A61B3/103
摘要： The invention contemplates a refractometer that images a test mark on the retina and is automatic in its determination of both refractive-power and astigmatism parameters, for the eye under examination. An imaging lens serves both (1) to project the test mark to the retina and (2) to convey that image for refocus external to the eye, to a scanner having the ability to digitally establish the eye's focal length. In the process of establishing the eye's focal length, the instrument automatically positions the imaging lens to best serve infinity viewing by the eye, and a prism then rotates the test mark while the scanner photoelectrically tracks the refocused image for the angles at which response is at a maximum, thus establishing astigmatism parameters. The instrument provides selective direct indication or print-out of the automatically determined parametric values.
摘要翻译：本发明考虑了一种折射仪，其对视网膜上的测试标记进行成像，并且在对被检眼进行的屈光度和散光参数的确定中是自动的。成像透镜用于（1）将测试标记投影到视网膜，和（2）将该图像重新聚焦到眼睛外部，以具有数字建立眼睛焦距的能力的扫描仪。在建立眼睛焦距的过程中，仪器自动定位成像镜头，以最佳地利用眼睛观看无限远视力，然后棱镜旋转测试标记，同时扫描仪光电跟踪重聚焦图像以获得响应所处的角度最大值，从而建立散光参数。仪器提供选择性的直接指示或打印出自动确定的参数值。

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