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Pulsed Xenon Arc Graphic Arts Lamp |
The lamps are based on a high power electric discharge taking place in an atmosphere of low pressure xenon. The spectral characteristics are a close approximation to daylight, making them suitable for both colour and black-and-white reproduction work. Furthermore there is no change in either colour temperature or luminous efficacy throughout life. To attain this improved spectrum, the discharge is operated in pulsed mode, typically at a frequency of 100 to 120 cycles per second.
A quartz bulb is necessary to withstand the very high power dissipation, and although this is made from an ozone-free material, short wave ultraviolet is generated in quantity therefore adequate protection must be employed when these lamps are illuminated.
The first lamps were created as long linear source of narrow diameter, this facilitating the design of slim and high efficiency reflector systems. Later models are often of the spiral type such as this example, to provide a compact source lamp for use in a conventional ellipsoidal reflector.
| Manufacturer: | General Electric Co. of U.S.A. | |
| Lamp Power: | 8000 Watts (based on 100Hz Pulsed operation) | |
| Lamp Current: | 5.0 Amps | |
| Lamp Voltage: | 1600 Volts | |
| Cap: | Ceramic | 177.8mm flying leads |
| Bulb Finish: | Clear | Quartz |
| Bulb Type: | T-10.5, 60mm coil dia. | T-3 (in eighths/inch) |
| Overall Length: | 118 mm | |
| Cap Centre Spacings: | 48 x 90mm | |
| Electrodes: | Non-backwound pure tungsten | |
| Atmosphere: | Inner : Argon | Outer : Vacuum |
| Luminous Flux: | 240,000 lm | |
| Luminous Efficacy: | 30 lm/W @ 100 hours | |
| Colour Temperature & CRI: | CCT: 5400K | CRI: |
| Chromaticity Co-ordinates: | CCx: | CCy: |
| Burning Position | Universal | |
| Rated Life: | ||
| Factory: | Bellevue, OH | U.S.A. |
| Date of Manufacture: | October 1990 | |
| Original / Present Value: | GB £408.00 (2001) | |