Quartz Tungsten Halogen (QTH) lamps are popular for applications where a high stability, high color temperature, visible to near-infrared light source is needed without the sharp spectral lines or ultraviolet wavelength emissions that arc lamps typically exhibit. These open air mounted light sources provide a lower cost alternative to the housing mounted versions.
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open-air-mounted-qth-sources - Drawings
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Features
45 W, 200 W, and 1000 W QTH lamp options
QTH lamps of 45 W, 200 W, and 1000 W input power are available as standalone lamps or complete light source kits for turnkey operation. The 45 W QTH lamp option outputs light from 300 to 2400 nm. The 200 W and 1000 W QTH lamp options output light from 250 to 2500 nm. A lamp should be chosen based on the wavelength and irradiance requirements of the application or system. Output irradiance of the lamp must be intense enough to produce a good signal to noise ratio without saturating a photodetector or other components in the system.
Highly regulated, high stability power supply included with light source kits
In order to achieve the certificate performance measured during operation, a highly regulated power supply capable of outputting constant current with minimum ripple is required. The OPS-Q Series Power Supplies meet that requirement. The appropriate power supply is included with all light source kits or available for separate purchase. In addition to operating a QTH lamp with minimal light ripple, external control via RS-232 or USB, external shutter control, and timer control features are among the additional benefits to using this power supply. Our calibrated QTH light kits are ideal for radiometric measurements whenever highly stable light output is needed.
Rod mount for open air operation
The appropriate rod mount is included with each QTH light source kit. Rod mounts are open-air holders that provide a low cost alternative to lamp housings. Additional benefits when using a rod mount include the ability to place the lamp closer to the sample or desired area of illumination and the option of mounting the lamp horizontally or vertically. Users that need to collimate and focus the light output of the QTH lamp can select the appropriate lens setup from Newport's line of lenses.
For QTH lamps of 1000 W power, a high quality UV face shield is required for complete and adequate skin protection. The below UV glasses and goggles do not provide sufficient shielding from UV light of that intensity.
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