  We stochastically quantize the Born-Infeld field which can hardly be
dealtwith by means of the standard canonical and/or path-integral quantization
methods. We set a hypothetical Langevin equation in order to quantize the
Born-Infeld field, following the basic idea of stochastic quantization method.
Numerically solving this nonlinear Langevin equation, we obtain a sort of
"particle mass" associated with the gauge-invariant Born-Infeld field as a
function of the so-called universal length. This is a revised version of which
original non-electronic one was published in 1995 by RISE in Waseda Univ.
