OPTOS formalism

The development of the OPTOS formalism started in 2015 at the Fraunhofer Institute for Solar Energy Systems ISE in Freiburg, Germany.

[2] [3] [4] A basic version of the code including documentation with function references has been available since the end of 2015 at the homepage of Fraunhofer ISE.

[6] One key aspect of OPTOS simulations is the division of the modeled system into interface and propagation regions.

The light redistribution properties are calculated with the most appropriate method for each interface individually and depending on the relevant structure dimension.

Using the pre-calculated matrices described above, optical properties like reflectance, transmittance or absorptance within the sheet can be calculated via matrix multiplications [2–4] and can be performed within seconds or minutes using a standard personal computer.