Research Area: High Pressure Discharge Lamps
HID-lamps (high-intensity-discharge) gain more and more importance within modern lighting systems. Due to their high efficacy HID-lamps are applied e.g. in automotive lighting, video projectors and high power exterior lighting. The temperature of their tungsten electrodes limits the lamp performance. Thus, actual HID-lamp research at AEPT deals with the interactions between the electrodes, their plasma boundaries and the arc discharge.
- High-speed absolutely calibrated optical spectroscopy/pyrometry and micro photography is used to investigate particle densities, electrode temperatures and the type of arc attachment.
- The “Bochum model lamp“ is used as a flexible system to study fundamental electrode phenomena under dc-, ac- and hf-operation.
- The “emitter-effect“ is optimised in commercial HID-lamps within an industrial cooperation project.
- Characterisation of electrodes for high-pressure discharge lamps by electrical and optical measurements
- High Intensity Discharge Lamps: Gas Phase Emitter Effect - Cornelia Ruhrmann
- Ignition of automotive HID lamps - Andre Bergner
- Environmental Friendly Cathode Materials for High Intensity Discharge Lamps - Thomas Höbing
- Run-up and aging of automotive HID lamps - Alexander Alexejev