Light Source matches light level of single star.
April 15, 2004 - With 0.0001–100 cd/m luminance range, USS-1200V-LL Starlight Uniform Source System suits calibration of low-light level imaging devices and systems. Satellite sphere illuminator, with external halogen light source and motorized variable attenuator, controls illumination levels. System includes 12 in. dia integrating sphere with 4 in. dia exit port and 2-part filter system comprised of bandpass filter-wheel and neutral-density filter. It may be directly or remotely controlled.
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Original Press release
Labsphere, Inc.
P.O. Box 70A
North Sutton, NH, 03260 0070
USA
New Low Light Uniform Source System Matches the Level of Light from a Single Star
NORTH SUTTON, NH - Labsphere, Inc. announces the USS-1200V-LL “Starlight” Uniform Source System for calibrating extremely low light level imaging devices and systems. The new Starlight Uniform Source System is specifically designed to provide spectral irradiance levels comparable to those of a single star shining on the Earth’s surface, featuring a luminance range of 0.0001 – 100 cd/m. This is necessary for the calibration and test of such equipment as night vision systems, aircraft displays, and low light level targeting systems.
The Starlight System features a satellite sphere illuminator with an external halogen light source and a motorized variable attenuator for precise control of illumination levels. Light from the satellite sphere enters the main sphere by passing through a two-part filter system: a bandpass filter-wheel permits selection of a specific spectral channel, while a neutral-density filter determines the system’s irradiance range.
The system can be operated directly, from front-panel controls, or through Labsphere’s standard Uniform Source System software. This software permits remote control of the lamp power supply, variable attenuator, and optional detector multiplexer. It also automatically corrects detector readings using programmable calibration factors, displaying the readings in both graphic and numeric format.
The Starlight System includes a 12” diameter integrating sphere with a 4” diameter exit port. The sphere is coated with Labsphere Spectraflect, providing an irradiance uniformity of greater than 98%.
About Labsphere: With 25 years of experience, Labsphere, Inc. is the world leader in light measurement, producing best-in-class calibration systems and components. Products include uniform light sources to calibrate imaging devices and camera systems in the visible and IR; light measurement systems for lasers, LEDs, and traditional light sources; and reflectance standards for calibrating spectroscopic measurement systems. Labsphere also provides systems and components to OEMs in numerous industries, including spectroscopy, laser diode test and measurement, semiconductor, and medical.
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