Optik publishes articles on all subjects related to light and electron optics and offers a survey on the state of research and technical development within the following fields:Optics:-Optics design, geometrical and beam optics, wave optics-Optical and micro-optical components, diffractive optics, devices and systems-Photoelectric and optoelectronic devices-Optical properties of materials, nonlinear optics, wave propagation and transmission in homogeneous and inhomogeneous materials-Information optics, image formation and processing, holographic techniques, microscopes and spectrometer techniques, and image analysis-Optical testing and measuring techniques-Optical communication and computing-Physiological optics-As well as other related topics.