APPARATUS FOR MEASURING LIGHT DISTRIBUTION CHARACTERISTICS

摘要

PROBLEM TO BE SOLVED: To provide a space-saving apparatus with a mechanism for rotating a light emission source sample to be measured by 360 degrees and capable of measuring three-dimensional light distribution characteristics by moving an optical receiver with respect to a Z-axis in one direction only by ±90 degrees.

SOLUTION: The apparatus includes a sample base 11; a sample base part 10; a rotating stage 30 for rotating the sample base part 10; a horizontal substrate 100 for mounting the rotating stage; a raised plate part 40 vertically raised over the horizontal substrate and provided with a rotatable bearing part; a rotating plate 50 capable of rotating by 180 degrees with the rotatable bearing part of the raised plate part as a fulcrum; the optical receiver 60 fastened to the surface of the rotating plate on the side of a measuring position point and capable of receiving axial rays from the measuring position point at a prescribed distance in a radial direction and measuring their intensity; and an imaging camera 70 for imaging the periphery of the light emission source sample. The optical receiver measures luminous intensity in spherical coordinates (a Z-axis direction δ>0) at the prescribed distance in a radial direction from the measuring position point of a light emission source and in a circumferential direction (θ) by rotating the rotating plate and the rotating stage.

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