The Q-Sun’s xenon arc lamps produce the most realistic reproduction of full spectrum sunlight including ultraviolet, visible light and infrared radiation. For many materials, exposure to the full spectrum is necessary to provide an accurate simulation, especially when testing for color change and lightfastness.

Different filters are used to achieve different spectra for various applications. For maximum acceleration, test materials can be exposed to the equivalent of noon, summer sunlight for 24 hours a day.

A Choice of Optical Filters To Simulate a Variety of Environments
Xenon light must be properly filtered to achieve the appropriate spectrum for each particular application. Differences in spectra may affect both the speed and the type of degradation. Three categories of filters are available to simulate a variety of service environments. The application or test method dictates which filters should be used. Download Q-Lab Technical Bulletin LX-5060 for a detailed discussion.

The Q-Sun’s long-life filters are exceptionally durable and maintain the required spectrum indefinitely. After many years of use, Q-Sun filters have yet to show any signs of aging. See Q-Lab Technical Bulletin LX-5060 for a detailed discussion about the Q-Sun's choice of filters.

Long Lasting Lamps
The Q-Sun uses air-cooled xenon arc lamps to significantly reduce operating and maintenance expenses. Typical lamp life is 1500 hours. Q-Sun model Xe-1 uses one lamp and model Xe-3 uses three. The new B02 lightfastness tester also uses just one lamp.

Changing lamps is quick and easy and does not interfere with the specimen exposure.