The Ultra High Pressure (UHP) Lamp is a projector lamp developed by Philips for projectors
. The UHP lamp is a mercury arc lamp that has an exceptionally high internal pressure of approximately 200 atmospheres. Compared to other projection lamps, the UHP lamp is extremely efficient and features high brightness
. It has a balanced color spectrum and an operating life of approximately 2,000 to 4,000 hours. Theinternal temperature is approx. 1,000 °C.
High-pressure projection lamps are available from various other manufacturers under their own designations.