OCT-BASED OPHTHALMOLOGICAL MEASURING SYSTEM

摘要

The present invention relates to an ophthalmological measuring system for determining distances and/or for tomographic imaging of ocular structures, which measuring system is based on an OCT method. The measuring system according to the invention consists of a light source with a spectral centroid (?), an interferometric measuring device, a scanner system, which in addition to the lateral deflection of the sample beam also has axial modulations with a frequency (f) in the sample arm, and with a control and evaluation unit. Scanner system is here to be understood as systems that perform a lateral, two-dimensional deflection of the sample beam with the aid of one or even two separate mirror elements and can in particular have axial modulation amplitudes zM >> ?/2. The use of the proposed measuring system is intended particularly for the area of ophthalmology, for determining distances and/or for tomographic imaging of ocular structures. It offers the possibility of using inexpensive scanner systems, as a result of which the construction of the overall apparatus is greatly simplified. However, it can also be used for scanner systems in other fields that use an OCT method, in particular a swept-source OCT method.