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Surface profile of 250 micron microlens array

Surface profile of 150 micron microlens array

Surface profile of 150 micron microlens array

Surface profile of 250 micron microlens array. The scattered spots represent a perfect spherical profile. The non-symmetry is caused by the measurement error of the profilometer, which is ideal to measure the height differences but may have error during the measurement of continuous profiles. The radius of curvature at the vertex of the profile is 547 micron. The conic constant is approximate 0.5.