Ophthalmologic Surgery

In ophthalmology instruments, laser safety filters block the therapy laser with high optical density, to protect the surgeon’s eye while showing a high transmittance for the image of the patient’s eye background. A sophisticated filter design with narrow blockband and balanced transmission level over the full visible range optimizes color rendering. The beamsplitter controls transmittance and reflectance for both therapy and target laser. The all-dielectric filters are extremely environmentally stable and hence also display a long-term shift-free spectral performance.