Chon Elliptical Illuminations
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Description:
The efficacy and lumen output of light source for illumination system were analyzed based on Etendue, this analytical approach may predict light source collection efficiency. A new method for measuring the output intensity distribution of light source with elliptical reflector was put forward; the collection efficacy vs. Etendue curve was approximated with this technique. The Etendue was changed by moving the mobile aperture gradually and the intensity distributions were recorded by CCD camera in this measurement method. The method is very commodious and the experimental result matches well with the theoretical model.
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Etendue analysis and measurement of light source with elliptical reflector [An article from: Displays]