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    • 7. 发明授权
    • Automatic eye refractive power measuring apparatus
    • 自动眼屈光力测量仪
    • US4848895A
    • 1989-07-18
    • US820793
    • 1986-01-22
    • Yasuo KatoKiwami HoriguchiShinji WadaIkuo Kitao
    • Yasuo KatoKiwami HoriguchiShinji WadaIkuo Kitao
    • A61B3/103
    • A61B3/103
    • There is disclosed an automatic eye refractive power measuring apparatus for automatically measuring refractive power of an eye under test by means of objective measurement. It comprises a projection system for projecting a measuring target image to a retina of the eye under test by invisible light; an imaging optical system for imaging a reflection image of the measuring target image projected to the retina and reflected by the retina; an opto-electric detector having a photosensitive surface disposed at imaging position and adapted to output electrical signal corresponding to the measuring target image formed on the photosensitive surface; display device for displaying the measuring target image reflected on the retina based on the electrical signal as a visible image; and an auto-measuring portion adapted to detect focussing state of the measuring target image projected to the retina based on the electrical signal and automatically calculated refractive power of the eye under test from the electrical signal.
    • 公开了一种用于通过客观测量自动测量被测眼睛的屈光度的自动眼睛屈光度测量装置。 它包括用于通过不可见光将测量目标图像投射到被测眼睛的视网膜的投影系统; 成像光学系统,用于对投射到视网膜并由视网膜反射的测量对象图像的反射图像进行成像; 光电检测器,其具有设置在成像位置处的光敏表面,并适于输出对应于形成在感光表面上的测量目标图像的电信号; 显示装置,用于基于电信号显示在视网膜上反射的测量对象图像作为可视图像; 以及自动测量部分,其适于基于所述电信号检测投影到所述视网膜的所述测量对象图像的聚焦状态,并且根据所述电信号自动计算被测眼睛的折射力。