Did you know TracePro features an OPL / Time-of-Flight Plot? OPL stands for optical path length. This is the distance a ray will travel from a source to a selected surface in an optical system. Time-of-flight is the time it takes a ray to travel from the source to the selected surface. The OPL/Time-of-Flight Plot is in the Analysis menu in TracePro.
Optical Path Length and Time-of-Flight are essential metrics in many types of optical systems, including LiDAR, laser range finders, absorption spectroscopy, and multi-pass gas cell. In LiDAR and laser range finder systems, the time-of-flight is used to calculate the distance to a target.
In absorption spectroscopy and multi-pass gas cells, the optical path length is used to calculate the absorption of a sample.
Optical path length information is also available in Incident Ray Table.