Pulsed Xenon Arc Graphic Arts Lamp

Pulsed Xenon Arc sources are employed principally within the Graphic Arts industry, being eminently suitable for the lighting of both horizontal and vertical copy boards. Since the lamps strike instantly and there is no delay in reaching full luminous flux, they are also suitable for use in stop-and-repeat document copying machines.

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)