This international journal 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.

• All methods strongly related to light optics, e.g. geometrical electron optics, imaging theories and methods, GRIN optics, geometrical aberration
  
• Instrumentation and equipments for guiding, focusing and imaging of charged particles, spectrometers and beam lithography
  
• Image reconstruction and analysis, holographic methods

It publishes original papers and short notes on theoretical and experimental research in English. OPTIK addresses itself especially to scientific and technical working specialists in this field.

At the same time it is the official organ of the German Society for Applied Optics (DGaO) and in affiliation with the European Optical Society (EOS).