| UHP |
Ultra high performance lamp developed by Philips. A modern lamp type which is particularly powerful but only requires little energy. |
| Ultra portable projectors |
Class of projectors between 3 kg and maximum 5 kg. |
| Uniformity |
Uniform illumination of an image area. Physically based brightness of a projected image reduces itself from the centre to the sides. Projectors tend to a brightness reduction of below 15 % to the sides which complies to a specification of 85% uniformity. |
| USB |
"Universal Serial Bus". Standard interface under Windows 98, which replaces the serial, parallel and other interface of the PC. Hardware components are automatically detected, configured and are instantly available when connected to the PC. With projectors currently only usable for the mouse interface. |
| UXGA |
Ultra extended Graphics Array. Graphic standard for PCs with a maximum resolution of 1600 x 1.200 pixels. |
