Recently, we have proposed an integrating sphere photometer with uniform spatial response utilizing multi-port detection and spatial averaging [Park]. As a result of numerical simulation, the 6-port integrating sphere proved to be only 0,3 % of spatial mismatch error regardless of lamp orientation even in case of the angular intensity distribution of 17°-FWHM. This work reports an actual implementation of the proposed 6-port integrating sphere photometer with a few preliminary evaluation of its spatial response distribution function (SRDF).
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