Quartz Tungsten Halogen (QTH) Lamps have high visible and near infrared output, with little ultraviolet making them great for use in Incandescent Light Sources. The stability, filament structure and high color temperature make our lamps the best for many measurement and illumination applications. We offer 10 to 1000 W QTH systems, and 0.8 to 140 W IR systems.
Our calibrated QTH irradiance sources are very reliable sources of known spectral irradiance, significantly less expensive than NIST standards. These sources can be used as primary sources for your own calibration transfer. We offer 45, 200 and 1000 W lamps calibrated from 250 to 2400 nm.
Click Incandescent Light Sources to shop or browse all of our standard models, or select a product series below for more information.