“FluxGage” A Photometric Test System for LED Luminaires Based on Solar Panels

We present a novel photometric test system for LED luminaires. The new photometric system called „FluxGage“ uses solar panels to detect and measure light. By placing a diffuser and a black pinhole array over a solar panels we achieve a detection surface which is also an absorber. This enables the system to be the same size as the DUT (Device Under Test), as opposed to an integrating sphere which is at least 3 times larger than the DUT. Simulations and experimental results show that this system can measure total flux with an uncertainty of 4.3%. The demonstrated system is used in 2 geometry. The system measures total flux, color parameters (CCT, CRI, chromaticity, etc.) and flicker.

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Testing High Volume LED Luminaire Builds

The demand for LED luminaires is growing exponentially. For example, a major Midwest city recently ordered several hundred thousand LED luminaires to replace street lights. Lower operating costs of LED luminaires is driving both commercial and consumer demand. Other attributes of LED luminaires include better and more uniform illumination and the ability to tailor the color of the LED’s to the correct mixture for the individual applications. All of these are major advantages over the use of sodium vapor lamps or traditional incandescent bulbs.

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Accuracy Validation of FluxGage

FluxGage uses a different approach than used in the integrating sphere, a comparison between the two instruments is presented.

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Performing Measurements with FluxGage

This application note explains basic setup and usage of FluxGage.

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FluxGage vs Integrating Sphere

This application note highlights the key differences between these two products.

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