The course is focused on the field of the product design verification made with computer simulations and physical testing of the product samples. The most commonly used types of simulations and tests (vibrations, thermal management, kinematics, manufacturing technology, lighting characteristics, electronics) will be presented in detail with using of tolerance analyses and simulations in the headlight development (tolerance types and tolerance chains for optical elements and plastic materials), calculation methods of tolerances and their specific applications in tolerance analyses and simulations. The follow-up area is prototyping, where the students learn to involve the prototype workshop into a real process of development headlight and back group lamps in the automotive industry, including the production of prototype optical members. Students will become familiar with the used prototype technologies of individual component and the subsequent surface finish. The samples of components are by optical scanning systems included retroactively into the analyses and related validation of parts.