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A -- LICENCE AGREEMENT FOR DEVICE TO MEASURE SPACIAL UNIFORMITY OF LIGHT SOURCE SOL SS DW-210 DUE 033100 POC Ken Touryan, NREL Technology Transfer Office, 303.275,3009 or by E-mail: ken_touryan@nre.gov. Posted by: John W. Enoch, Jr., NREL Contracts & Business Services, 303.275.2941. WEB: Click here to connect to NREL's Homepage, http://www.nrel.gov. E-MAIL: Click here for more information, ken_touryan@nrel.gov. On behalf of the U.S. Department of Energy, the National Renewable Energy Laboratory (NREL) anticipates negotiating one or more licensing agreements with U.S. companies interested in commercializing a device which is an instrument that measures the spatial uniformity of a light source such as one used for simulation of sunlight on an 8X8 grid of solar cells. Its ability to measure light intensity from several sensors simultaneously distinguishes it from other instruments used for this purpose and enables its user to study temporal aspects of spatial uniformity, with an uncertainty of less than +/- 0.6 percent. It can measure the spatial uniformity of a pulsed simulator with one flash. The instrument uses an array of devices (photovoltaic or photoelectric) to sense light uniformity in the test plane. It uses operational amplifiers, sample-and-hold circuits, and analog multiplexers to provide the appropriate signals to a computer data acquisition board for conversion to digital levels, processing, display, and recording. The use of sample-and-hold circuitry to enable simultaneous measurement of light levels at many locations with one analog-to-digital converter is new. For further information, please contact Ken Touryan, NREL Technology Transfer Office, 303.275.3009, or by E-mail: Ken_touryan@nrel.gov. Posted 03/01/00 (W-SN429915). (0061)

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