The Medical Optics Laboratory at the BMTI is used for the optical, optomechanical, colorimetric and radiation-physical characterization of light and radiation sources, optomechanical and electrooptical components and assemblies up to complete ophthalmological systems. Commercial devices and components, modified systems as well as complete in-house developments are analyzed. Figure 1 gives an insight into the laboratory.
Example application:Figure 2 shows how a color flicker stimulus (here magenta) is generated and characterized. Exact wavelength properties (wavelengths, one could say colors, and their intensities) are very important for color channel selective stimulations for color sense research, but also targeted diagnostic procedures for various eye diseases, such as for glaucoma. If the temporal component of the stimulus is also addressed, the exactness and knowledge of the energetic, colorimetric and temporal nature of the stimulus must ultimately be determined. In Figure 2, according to additive color mixing, magenta is generated from blue and red using a spectrally programmable light source (software interface in Figure 1, top left). This color is applied with a rectangular gradient at 15 Hz, which is also done with the light source. The software surface of the light source can be seen in the top left of the picture.The wavelength spectrum and light output are recorded using a radiospectrometer and integrating sphere (Figure 2, top right). The temporal behaviour of the stimulus is recorded and analysed with a storage oscilloscope and a fast Si photodiode.