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    • 10. 发明授权
    • Device and method for measuring a cornea
    • 用于测量角膜的装置和方法
    • US09004690B2
    • 2015-04-14
    • US13723508
    • 2012-12-21
    • Christian RathjenRoger CattinChristoph Meier
    • Christian RathjenRoger CattinChristoph Meier
    • A61B3/10A61B3/00A61B3/14A61B3/107
    • A61B3/107
    • In order to measure a cornea with the aid of a projection (S11) of a two-dimensional reference pattern onto the cornea and of a detection (S12) of the reflection pattern reflected by the cornea by virtue of the reference pattern, a plurality of different reflection images of one or more reflection patterns reflected by the cornea are stored (S13). For points on the cornea a phase value of the reflection pattern is respectively calculated on the basis of intensities respectively measured in the stored reflection images at a pixel corresponding to the relevant point. At least one measured geometrical value of the cornea is calculated (S2) on the basis of the calculated phase value. The measurement of the cornea on the basis of a plurality of different reflection images of one or more reflection patterns reflected by the cornea enables a continuous measurement of the cornea in which corresponding pixels are acquired and evaluated for each point on the cornea.
    • 为了借助于二维参考图案在角膜上的投影(S11)和通过参考图案由角膜反射的反射图案的检测(S12)来测量角膜,多个 存储由角膜反射的一个或多个反射图案的不同反射图像(S13)。 对于角膜上的点,分别基于在与相关点对应的像素处存储的反射图像中分别测量的强度来计算反射图案的相位值。 基于计算的相位值计算角膜的至少一个测量的几何值(S2)。 基于由角膜反射的一个或多个反射图案的多个不同反射图像的角膜的测量使得可以连续测量角膜,其中对于角膜上的每个点获取并评估对应的像素。