This document was created by a joint working group of the OPC Foundation and the VDMA. It specifies an OPC UA Information Model for Laser Systems. Such a system is considered a self-contained unit, including the laser source and all required subsystems, such as the control system for the laser source, optics, cooling aggregates and others. Hence, one or several laser systems may be a subcomponent of a larger machine. The goal of this companion specification is to provide a standardized and extendable interface for the integration of laser systems into an OPC UA environment. This interface shall then provide laser system maintainers with easy and robust access to information, based on which they can optimize their individual processes and derive additional value. One example would be the enabling of fast and target-oriented maintenance measures or the on-demand stock part management of service life parts. This is primarily achieved by providing data regarding the laser system type, identity, and past and current states/conditions.