Patent ID: 7695137
Filing Date: 2010-04-13
Classification: A61B

Abstract:
1. A short-coherence interferometer for measuring partial distances of an eye which focuses a measurement beam on a respective coherence window and/or reduces required interferometer mirror scan distances to distances that are less than distances which must be measured, comprising: at least one deflecting element with a deflecting angle α; and elements of focusing optics in the short-coherence interferometer carrying out a periodic back-and-forth movement so that the measurement beam focus which is generated by the focusing optics and imaged on the eye by relay optics is moved synchronously with the coherence window from the cornea along the optic axis of the eye to the retina, and back; wherein at least one deflecting element moves to direct the measurement beam or a reference beam sequentially to a series of reflectors arranged in a staggered manner with respect to depth and/or laterally.