On the Interflecton Concerning Fluorescent Lamp (Part II)

The interflection in outer surface of a circular fluorescent lamp has been calculated with the approximate method, in which the circular cylindrical toroidal was reduced to the hexagonal cylindrical toroidal and finally to the equivalent circular cylinder. From the results of calculated luminance ratio between total and initial luminances of the internal surface of the equivalent circular cylinder, the increment of the light intensity along the axis of the symmetry was obtained, and was compared with the experimental data. Good agreement was obtained between calculated and measured results.